Чувствительный элемент гироскопа

Изобретение относится к устройствам, используемым в приборах ориентации и навигации, а именно к чувствительным элементам гироскопа. Чувствительный элемент содержит звукопровод, выполненный из изотропного материала, в форме параллелепипеда и пластинчатые пьезоэлектрические излучающие и приёмные преобразователи сдвиговых волн, оси чувствительности которых перпендикулярны друг другу, при этом преобразователи размещены на противоположных гранях звукопровода. Технический результат – создание чувствительного элемента гироскопа, который обеспечивает как измерение абсолютного значения угловой скорости, так и определение пространственной ориентации вектора угловой скорости. 2 ил.

Подвижный узел устройства измерения частоты вращения колеса железнодорожного транспорта

Полезная модель относится к области рельсовых транспортных средств и может быть применена для отслеживания скорости перемещения железнодорожного транспорта. Подвижный узел устройства измерения частоты вращения колеса железнодорожного транспорта содержит корпус и постоянный магнит, при этом подвижный узел выполнен с возможностью установки на колесную пару железнодорожного транспорта и с возможностью размещения внешних элементов в однородном магнитном поле постоянного магнита. Технический результат заключается в повышении точности измерения частоты вращения колеса железнодорожного транспорта. 8 з.п. ф-лы, 11 фиг. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 187 836 U1 (51) МПК G01P 3/44 (2006.01) B61L 25/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01P 3/44 (2006.01); B61L 25/02 (2006.01) (21)(22) Заявка: 2018130337, 21.08.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Акционерное общество "Научно-производственный комплекс "ВИП" (RU) Дата регистрации: 19.03.2019 (56) Список документов, цитированных в отчете о поиске: RU 2640313 C2, 27.12.2017. SU (45) Опубликовано: 19.03.2019 Бюл. № 8 (54) Подвижный узел устройства измерения частоты вращения колеса железнодорожного транспорта (57) Реферат: Полезная модель относится к области установки на колесную пару железнодорожного рельсовых транспортных средств и может быть транспорта и с возможностью размещения применена для отслеживания скорости внешних элементов в однородном магнитном перемещения железнодорожного транспорта. поле постоянного магнита. Технический Подвижный узел устройства измерения частоты результат заключается в повышении точности вращения колеса железнодорожного транспорта измерения частоты вращения колеса содержит корпус и постоянный магнит, при этом железнодорожного транспорта. 8 з.п. ф-лы, 11 подвижный узел выполнен с возможностью фиг. R U 1 8 7 8 3 6 347660 A1, 10.08.1972. RU 1544 U1, 16.01.1996. RU 2263922 ...

Трехкомпонентный измеритель угловой скорости

Изобретение относится к области измерительной техники, а именно к области измерения параметров движения объекта и может быть использовано в бесплатформенных инерциальных навигационных системах. Вектор угловой скорости объекта определяется по измеренным трем компонентам угловой скорости, направленным по осям чувствительности трех двухстепенных гироскопических датчиков угловой скорости. Техническое решение направлено на снижение погрешности от некоммутативности конечных поворотов объекта. Задачей заявленного изобретения является повышение точности измерения параметров движения за счет компенсации погрешностей, обусловленных угловым ускорением объекта, и упрощение конструкции. 1 ил.

СПОСОБ ОТОБРАЖЕНИЯ КНОПКИ НА ДИСПЛЕЕ ТРАНСПОРТНОГО СРЕДСТВА, СООТВЕТСТВУЮЩИЕ ТРАНСПОРТНОЕ СРЕДСТВО И МАШИНОЧИТАЕМЫЙ НОСИТЕЛЬ

Sensor zum Messen der Winkelverschiebung eines sich bewegenden Gegenstandes

Mikromechanische Drehraten-Sensoranordnung und entsprechendes Herstellungsverfahren

Die Erfindung schafft eine mikromechanische Drehraten-Sensoranordnung und ein entsprechendes Herstellungsverfahren. Die mikromechanische Drehraten-Sensoranordnung umfasst eine rotatorisch um eine erste Achse (z) oszillierend durch eine Antriebseinrichtung (AT1, AT2) über eine Antriebsrahmeneinrichtung (RA1a, RA1b, RA2a, RA2b) antreibbare erste Drehratensensoreinrichtung (100) zum Erfassen einer ersten äußeren Drehrate um eine zweite Achse (y) und einer zweiten äußeren Drehrate um eine dritte Achse (x), wobei die erste, zweite und dritte Achse (z, y, x) senkrecht zueinander angeordnet sind; und eine linear oszillierend entlang der zweiten Achse (y) durch die Antriebseinrichtung (AT1, AT2) über die Antriebsrahmeneinrichtung (RA1a, RA1b, RA2a, RA2b) antreibbare zweite Drehratensensoreinrichtung (200) zum Erfassen einer dritten äußeren Drehrate um die erste Achse (z). Die erste Drehratensensoreinrichtung (100) ist über die Antriebsrahmeneinrichtung (RA1a, RA1b, RA2a, RA2b) mit der zweiten Drehratensensoreinrichtung ...

Vorrichtung zum Positionieren eines Raddrehzahlsensors, ABS-System umfassend eine Vorrichtung zum Positionieren eines Raddrehzahlsensors und Verfahren zur Justage eines Raddrehzahlsensors

Vorrichtung (1) zum Positionieren eines Raddrehzahlsensors (5) relativ zu einem Polrad, umfassendeine Befestigungseinrichtung (3) zur Anbindung der Vorrichtung (1) an ein Achskörperteil (4),einen Aufnahmebereich (2) zur Aufnahme des Raddrehzahlsensors (5), und eine Positioniereinrichtung (20) zum kontrollierten Einstellen eines Abstands zwischen dem Aufnahmebereich (2) und dem Polrad, dadurch gekennzeichnet, dass der Aufnahmebereich (2) mittels der Positioniereinrichtung (20) relativ zum Achskörperteil (4) verlagerbar und fixierbar ist und dass mittels eines einzelnen festgelegten Betätigungsvorgang der Positioniereinrichtung (20) ein Versatz des Aufnahmebereichs (2) zwischen 10 µm und 100 µm realisierbar ist.

Sensor

Eine Konfiguration mit einem ersten Substrat, das eine erste bewegliche Elektrode aufweist; einem zweiten Substrat, das mit dem ersten Substrat verbunden ist und eine erste fixierte Elektrode aufweist, die der ersten beweglichen Elektrode zugewandt ist; und einem dritten Substrat, das mit dem zweiten Substrat verbunden ist. Das erste Substrat, das zweite Substrat und das dritte Substrat sind in dieser Reihenfolge aufeinander geschichtet, und das zweite Substrat und das dritte Substrat sind zumindest in einem Teil zwischen der ersten fixierten Elektrode und dem dritten Substrat nicht miteinander verbunden.

VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DER WINKELGESCHWINDIGKEIT AUS ZWEI SIGNALEN, DIE JEWEILS EINE FUNKTION DES DREHWINKELS SIND.

Verfahren und Einrichtung zur Drehzahlmessung eines getaktet angesteuerten elektrischen Motors

Verfahren zur Drehzahlmessung eines getaktet angesteuerten elektrischen Motors, wobei der Motor (M) in festzulegenden Zeitabständen (T1) für eine definierte Messzeit (T2) durch das für die Taktung vorgesehene Schaltelement (1) voll aufgesteuert und in dieser Zeit die der Motordrehzahl (n) proportionale Frequenz der Welligkeit im Strom gemessen wird.

Drehwinkel- oder Drehzahlgeber

Sensoreinheit für ein Fahrzeug

Die Erfindung betrifft eine Sensoranordnung (1) für ein Fahrzeug mit einer Sensoreinheit (10) und einer Kabelanordnung (50), wobei die Sensoreinheit (10) einen Grundträger (12) und einen mit dem Grundträger (12) verbundenen Elektronikteil (30) mit einem Sensorelement (34) umfasst, wobei der Elektronikteil (30) über mindestens eine Kontaktierung (37, 53, 67) mit der Kabelanordnung (50) elektrisch kontaktierbar ist, welche mindestens eine Einzelader (52, 54) umfasst. Erfindungsgemäß ist der Grundträger (12) als offenes Gehäuse ausgeführt, welches mindestens eine Einführöffnung (14) zur Aufnahme der mindestens einen Kontaktierung (37, 53, 67) und eine Aufnahmetasche (16) zur mindestens teilweisen Aufnahme des Elektronikteils (30) aufweist, wobei eine elastische Kappe (20) mit Mitteln (24) zur Befestigung der Sensoreinheit (10) im Fahrzeug vorgesehen ist, welche zumindest teilweise über den als Gehäuse ausgeführten Grundträger (12) schiebbar ist und die Aufnahmetasche (16) dichtend abschließt ...

EINRICHTUNG ZUM UEBERTRAGEN DER DREHBEWEGUNG EINER WELLE AUF EINE ZWEITE WELLE

Verfahren und Vorrichtung zum Bestimmen einer Stellungsangabe eines Läufers einer elektrischen Maschine

Die Erfindung betrifft ein Verfahren zum Ermitteln einer hoch aufgelösten Stellungsangabe (ha) aus einer bereitgestellten gering aufgelösten Stellungsangabe (ga) für die Verwendung zur Ansteuerung einer elektronisch kommutierten elektrischen Maschine (2), mit folgenden Schritten: Ermitteln einer geschätzten Stellungsangabe (Schätz) basierend auf einer Drehzahl der elektrischen Maschine (2); und Korrigieren der geschätzten Stellungsangabe (Schätz) basierend auf einem Fehlerwert (Fehler) durch Beaufschlagen mit einem Korrekturwert (korr), um die hoch aufgelöste Stellungsangabe (ha) zu erhalten, wobei der Fehlerwert (Fehler) eine Abweichung zwischen der gering aufgelösten Stellungsangabe (ga) und der geschätzten Stellungsangabe (Schätz) angibt.

Verfahren zum Betrieb eines Kraftfahrzeugs mit einem Start-Stopp-System sowie Start-Stopp-System und Kraftfahrzeug

Verfahren zum Betrieb eines Kraftfahrzeugs (2) mit einem Start-Stopp-System (4), mit den Schritten: Erfassen einer Bewegung des Kraftfahrzeugs (2) in Fahrzeuglängsrichtung, Erfassen einer Neigung (W) des Kraftfahrzeugs (2) in Fahrzeuglängsrichtung, Vergleichen der Neigung (W) mit einem Grenzwert (G), und Erzeugen eines Startsignals (S) zum Starten einer Brennkraftmaschine (6) des Kraftfahrzeugs (2), wenn eine Bewegung des Kraftfahrzeugs (2) vorliegt und die Neigung (W) größer als der Grenzwert (G) ist, wobei ein Feststellbremsen-Aktivierungssignal (P) einer Feststellbremse (12) des Kraftfahrzeugs (2) eingelesen wird, und die Erzeugung des Startsignals (S) unterdrückt wird, wenn das Feststellbremsen-Aktivierungssignal (P) eine aktivierte Feststellbremse (12) repräsentiert.

Calculator indicating instantaneous revolutions - uses analogue current varying between zero and 20 milliamps. depending on position of decimal point of result stored in 4 digit memory

A calculator indicates the instantaneous revolutions using a load-independent analogue current output. The strength of the current varies from 020 mA. This analogue current is completely linear and a controlling tachogenerator is no longer necessary. The result from the calculator is stored in a four digit memory and converted by means of a d-a converter into a corresponding current. Circuit connections decide on the validity of the conversion. If, for instance, a speed of 10 to 99.99 r.p.m. is necessary for the control the connections are formed so that the decimal point signal after the second place of the result releases the control. If the decimal point signal appears after the first place, the analogue current increases to 20 mA. If it appears after the third place, the current sinks to OmA.

Wälzlagereinheit für Rad

Sensoranordnung für ein Fahrzeug

Die Erfindung betrifft eine Sensoranordnung (1) für ein Fahrzeug, mit einem Sensorelement (WSS) und mindestens zwei Steuergeräten (ECU1, ECU2), welche jeweils eine Auswerte- und Steuereinheit (3A, 3B) und eine Energiequelle (VB1, VB2) aufweisen, wobei in einem ersten Steuergerät (ECU1) eine erste Auswerte- und Steuereinheit (3A) mit einer ersten Energiequelle (VB1) und in einem zweiten Steuergerät (ECU2) eine zweite Auswerte- und Steuereinheit (3B) mit einer zweiten Energiequelle (VB2) verbunden ist, wobei das erste Steuergerät (ECU1) eine Umschaltvorrichtung (20) umfasst, welche einen ersten Anschluss (WSS1) des Sensorelements (WSS) mit der ersten Energiequelle (VB1) und/oder mit der zweiten Energiequelle (VB2) verbindet, wobei ein zweiter Anschluss (WSS-) des Sensorelements (WSS) mit dem zweiten Steuergerät (ECU2) verbunden ist, wobei ein durch das Sensorelement (WSS) fließender Sensorstrom (Is) mit Informationen über eine erfasste Messgröße moduliert ist, wobei die erste Auswerte und ...

Verfahren und Vorrichtung zum Erkennen durchdrehender Räder während eines Beschleunigungsvorgangs

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung, bei dem durch Vergleich einer gemessenen Radwinkelbeschleunigung mit einer ermittelten vermuteten Radwinkelbeschleunigung auf Basis einer sensorisch erfassten translatorischen Längsbeschleunigung das Durchdrehen eines oder mehrerer Räder detektiert wird. Durch Anwendung der Bewegungsgleichung des Antriebs lässt sich zudem bestimmen, ob der Haftungsabriss des Rades oder der Räder gewollt oder ungewollt ist, um darauf aufbauend in einer Sicherheitsfunktion gegebenenfalls die Abschaltung des Antriebs einzuleiten.

Control of pressure roller position on winder

A winder with a driven spindle (5) is controlled to wind at constant speed by deriving the surface speed of the bobbin (6) from the speed of a pressure roller (11). The distance between the axes of the spindle (5) and pressure roller (6) is altered according to the bobbin diameter through a controller (31) using the measured change of speed of the pressure roller in a given time interval.

VORRICHTUNG ZUR MESSUNG DER WINKELSTELLUNG EINER WELLE

Im Folgenden wird eine Vorrichtung zur Messung der Winkelstellung oder der Drehbewegung einer Welle beschrieben. Gemäß einem Ausführungsbeispiel weilst die Vorrichtung ein erstes Gehäuseteil sowie eine in dem ersten Gehäuseteil angeordnete und um eine Rotationsachse drehbare Welle auf. Die Welle weist eine Bohrung auf, die sich von einer Stirnseite der Welle entlang der Rotationsachse in die Welle hinein erstreckt. Die Vorrichtung umfasst weiter eine Magneteinheit mit mindestens einem Permanentmagneten, der innerhalb der Bohrung angeordnet und an der Welle befestigt ist, ein zweites Gehäuseteil mit einem Vorsprung, der sich entlang der Rotationsachse in die Bohrung hinein erstreckt, sowie ein im Inneren des Vorsprungs des zweites Gehäuseteils angeordnetes Magnetfeld-Sensorelement.

Geschwindigkeitsdetektor für Schlittenantriebsmotor

AC Motor-driven fan or compressor rotational speed measurement +

The method for determining the rotation rate of a fan or compressor driven by an AC motor measures the phase shift between voltage and currant of the driving motor (1) of the Ventilator or Compressor (3) and converting the measured value to a rotation rate. The stalled motor (rotation rate = phi) is measured, and in the case of a sinusoidal voltage and current waveform the associated cos phi is measured. The measuring instrument does not need to be located close to the motor. The motor slip may be measured by using an additional motor winding, and measuring the induced voltage. By measuring motor speed, a measure of the filter (5) contamination may be found.

Compressor e.g. exhaust gas turbocharger, rotation speed determining method for use in e.g. diesel internal combustion engine, involves obtaining rotation speed of compressor from periodic fluctuation of portion of pressure signal

The method involves directly detecting pressure in an area downstream of a compressor, and providing a corresponding pressure signal. The rotation speed of the compressor is obtained from the periodic fluctuation (u n) of a portion of the pressure signal. The periodic fluctuation is separated from the pressure signal through a high pass filtering, where a frequency of the periodic fluctuation is determined through a frequency analysis. The average value of the pressure signal is obtained through a low pass filtering. Independent claims are also included for the following: (1) a computer program for application in the method for determining rotation speed of a compressor (2) an electrical storage medium for a control and/or regulation device (3) a control and/or regulation device for an internal combustion engine (4) an internal combustion engine comprising a compressor.

Wälzlager, insbesondere Radlager für Kraftfahrzeuge

WÄLZLAGEREINHEIT MIT SENSOR

Crank case for internal-combustion engine, has sensor arranged in radial shaft sealing ring for detecting speed of crank shaft, which is connected by cable with control device, where cable is guided into bore hole

The case (1) has a crank shaft supported in the case and sealed on an output side with a radial shaft sealing ring against the case. A transmission bell housing is arranged at the case radially outwards around the radial shaft sealing ring. A starter ring gear (4) is arranged at the crank shaft on a side of the transmission bell housing. A sensor is arranged in the radial shaft sealing ring for detecting speed of the crank shaft, which is connected by a cable with a control device. The cable is guided into a bore hole.

Rotational speed and anomalous rotation rate detection

The present invention relates to systems and methods for determining the rotational speed of a magnetic object. According to a first aspect, at least three measurements of the magnetic field of a magnetic rotating object are made using a three- dimensional magnetic field sensor, each measurement representing a magnetic field vector. Based on these field vectors, a centre point of the magnetic field associated with the magnetic object is determined, and the angle between vectors defined between the centre point and at least two of the field measurements is determined. The rotational speed is determined from the angle and the time interval between the field measurements. According to a second aspect, an anomalous stir rate of a magnetic stir object is determined by evaluating variations in the stir rate and determining whether these variations exceed a certain threshold.

Shaft attachment to cooperate with a sensor

An attachment for fitting on a shaft 4 and intended to cooperate with a sensor (e.g. of capacitive or inductive type) to measure a property associated with rotation of the shaft, comprises a pair of concentric rings each made up of two or more arcuate pieces 1,2. The pieces 1 of the outer ring overlap the joints between the inner ring pieces 2. The assembly is attached to the shaft by bolts 3. Smaller bolts 5 may be used to hold the ring pieces together prior to fitting the bolts 3.

Motor drive feedback

Determining rotational speed or direction of a body

Disclosed is a device for use in determining the rotational speed of a body. The device comprises a sensor 20 for detecting the strength of a magnetic field, and a body 10 that is rotatable relative to the sensor about an axis. The body comprises a plurality of circumferentially spaced magnetic regions 11, 12, 13. The device is arranged so that, during rotation of the body relative to the sensor, the maximum strength detectable by the sensor of a first magnetic field of a first of the magnetic regions is different to the maximum strength detectable by the sensor of a second magnetic field of a second of the magnetic regions. In an embodiment of the invention, the body comprises a member 16 and each of the magnetic regions comprises a discrete magnetic element carried by the member 16. Claims have been included which relate to a device for and a method of determining the rotational direction of a body.

Electronic rate generator

... 1,141,433. Frequency determining. NORTH AMERICAN AVIATION Inc. 12 Oct., 1967 [24 March, 1967], No. 46660/67. Heading H3A. [Also in Division G1] In a tachometer circuit a D.C. voltage proportional to the frequency of revolution of the shaft 1, Fig. 2, is produced from two sinusoidal input signals whose amplitudes are constant and frequencies are both equal to that of the rotation of the shaft but which are relatively shifted in phase by 90 degrees. The two input signals, Figs. 3a, 3b (not shown), from resolver 2, energized by generator 3, are fed via emitter followers 26, 27 to pairs of demodulating insulated gate field effect transistors 32-35 to whose gate electrodes in phase and 180 degrees out of phase signals from generator 3 are fed to provide four signals 90 degrees out of phase with each other, Figs. 3e-3h (not shown). These signals, supplied across capacitors 36-39, are differentiated by RC circuits 45-51, Figs. 4e-4h (not shown), and fed to further demodulating transistors 52-55 ...

FREQUENCY-TO-VOLTAGE CONVERTER

Vehicle display based on vehicle speed

A vehicle display is adaptable based on vehicle speed or velocity. An example vehicle includes a speed sensor to measure a vehicle speed, a display controller to compare the vehicle speed to a threshold, and a display 102. The display presents, in response to the vehicle speed being less than the threshold, a first button 202 at a button location 204. If the vehicle speed is greater than or equal to the threshold, a second button (Fig.2B, 206) at the button location is displayed. The buttons may be associated with different vehicle features, e.g. a start-stop engine system and a lane assist system. The display may be a touch screen. If the first button is pressed for a duration shorter than a threshold, the display may load an interface feature associated with the first button. If the duration is longer than the threshold, the second button may be displayed at the button location.

Method and apparatus for warning of driving on a potentially dangerous road surface

ELECTRONIC TACHOMETER INCLUDING A VARIABLE BANDWIDTH DIFFERENTIATOR

Tachometer device controlled by an electric motor

A device (1) for transmitting rotary motion from a first to a second shaft and for measuring the angular speed of said rotary motion, comprising a first and second pulse generator associated respectively with said first and second shaft, and governing, by means of a processing circuit, the operation of an electric motor (2) of direct current type one shaft (7) of which is torsionally coupled to said second shaft; and a speed indicator comprising means (25) sensitive to magnetic field variations is described. The main feature of this device (1) is that said second pulse generator comprises a magneto-electrical transducer (32), and a permanent magnet (9) is torsionally coupled to said second shaft; said magnet (9) determining the activation either of said magneto-electrical transducer (32), or of those means (25) of said speed indicator which are sensitive to magnetic field variations.

Apparatus and method for detecting vehicle motion in a tyre pressure monitoring system

Electric machine, rotor and stator

A stator core 110 segment comprising a body 140 defining a segment 120 of an annular ring and a pole tooth 150 projecting radially from the body, the tooth comprising a pair of tips 160a, 160b, which have an initial configuration in which they extend longitudinally with respect to the tooth and an assembled configuration in which they extend transversely to provide a flange at the pole tooth end. Each tooth tip comprises a web contiguous with the tooth and a head at the distal end of the web and the tooth has a recess in a shoulder proximal to each tip, the recess defining a seat to receiving and aligning a portion of the head when the tip is in assembled. The head may comprise a first portion proximal to the web and a second portion distal to the web, where when assembled the first portion engages the seat and the second portion extends transversely beyond the tooth. The first portion of the head and the seat may have complementary profiles which resiliently engage, where the profiles ...

Process of determination number of revolutions of a tool for drilling

Verfahren zur Ermittlung eines Polradwinkels

A method of determining a rotor displacement angle of a synchronous generator having a rotor and electrically connected to a power supply network uses at least one rotary speed measuring device. During a revolution of the rotor, in particular during each revolution of the rotor, the measuring device communicates at least one rotary speed signal to an evaluation unit. A frequency measuring device communicates a frequency signal to the evaluation unit for each period duration of a voltage signal of the power supply network. A time duration between communication of the rotary speed signal and communication of the frequency signal is determined by the evaluation unit, and the rotor displacement angle is inferred in dependence on the determined time duration.

SYSTEM AND PROCEDURE FOR THE DETERMINATION OF THE POSITION OR THE NUMBER OF REVOLUTIONS OF A KOMMUTIERTEN DIRECT CURRENT MOTOR WITH ERROR CORRECTION

ELECTRICAL MEASURING INSTRUMENT TO THE MEASUREMENT AND/OR COMPUTATION OF THE LEVEL OR OTHER MECHANICAL DATA OF AN ELECTRICALLY LEADING LIQUID.

ON ELECTRICAL RIPPLES OF BEING BASED AND MEANS OF MECHANICAL ENGINE SIGNALS OF CALIBRATIONCASH TACHOGENERATORS

NUMERIC DETERMINATION OF THE TIRE PRESSURE

WHEEL CONDITION-MONITORING SYSTEM

Gyroscopic rotational monitoring system

A gyroscopic rotational monitoring system may be utilized for monitoring one or more properties of rotatable container or vessel (2), and/or one or more properties of a displaceable material contained in the rotatable vessels. An exemplary aspect relates to the use of a gyroscope (22) and periodicity sensor (e.g., accelerometer) (24) to determine rotational speed of a concrete mixing drum, so that the slump or other property of the concrete can be monitored or adjusted such as by dosing with water, chemical admixtures, or mixture thereof.

A fluid seal and speed sensor assembly

An angular rate sensor

ANTIFRICTION BEARING WITH A CLIP-ON SENSOR

PHASE SENSITIVE MOTION TRANSDUCER

ELECTRONIC TACHOMETER WITH VARIABLE BANDWIDTH DIFFERENTIATOR

STATIONARY STATE DETERMINATION, SPEED MEASUREMENTS

A standalone odometry device includes an accelerometer and/or gyroscope configured to be mounted on a wheel or axle of a vehicle. A controller in communication with the accelerometer and/or gyroscope is configured to receive data from the accelerometer and/or gyroscope. The controller processes the data to determine one or more of the speed, wheel rotation direction, accumulated distance travelled, stationary status, acceleration, deceleration, wheel diameter, and grade of surface on which the wheel is in contact.

METHOD AND SYSTEM FOR DAMPING VIBRATIONS IN A TOOL STRING SYSTEM

The invention provides a control system and method for limiting vibrations in a tool string system, comprising a relatively heavy rotatable device, such as a pump system or a bottom hole assembly, connected to an long rotatable tool string driven by a drive system. The 5 control system comprises feedback of both torque and rotational speed signals to correct the set rotational speed. An objective is to maintain the drive speed over torque ratio equal to the connected tool string impedance. A secondary objective, for lower frequencies, 10 is to approach and maintain a setpoint speed as drive rotation speed. The system may include a rotational speed sensor and a torque sensor, with the latter optionally replaced by a motor torque signal already available from a variable frequency drive (VFD) for an AC motor and the 15 current safeguarding signal for a DC motor.

MEASURING SPEED OF ROTATION OF A DOWNHOLE MOTOR

The invention relates to downhole motors for rotating drill bits. The downhole motors may comprise stators, turbines or the like. The drilling motor may comprise a drilling apparatus comprising a drill bit connected to a rotor rotatably housed within a stator (or a turbine rotor in a housing), the rotor comprising at least one magnetic field source or magnetic field detector, and the stator comprising at least one magnetic field source if the rotor comprises a magnetic field detector or comprising at least one magnetic field detector if the rotor comprises a magnetic field source, thereby allowing the rotation speed of the rotor relative to the stator to be measured.

TACHOMETER FOR DOWNHOLE DRILLING MOTOR

A tachometer for a downhole motor includes: a tubular housing having a coupling for connection to a housing of the motor; and a probe. The probe: has a coupling for connection to a rotor of the motor, is movable relative to the tachometer housing, and has at least a portion disposed in a bore of the tachometer housing. The tachometer further includes electronics disposed in the tachometer housing and including: a battery; one or more proximity sensors for tracking an orbit of the probe; and a programmable logic controller (PLC). The PLC is operable: to receive the tracked orbit, and at least one of: to determine an angular speed of the probe using the tracked orbit, and to forecast a remaining lifespan of the motor using the tracked orbit.

INDUCTIVE TRANSDUCER AND DEVICES FOR MEASURING THE DISPLACEMENT OF A MOVING MEMBER

DESCRIPTIVE The invention makes it possible to detect and measure the movement of a moving member (50) through an amagnetic or low permeability metal wall. The installation requires ferromagnetic material targets placed at regular intervals over the moving member. The transducer is positioned facing the moving member by its detection face (16). It comprises two ferromagnetic cores (2,8) surrounded both by an exciting coil (4) and a measuring coil (10), at whose terminals the measuring signal is taken. The latter is proportional to the variable reluctance of the magnetic circuit, which varies as a function of the position of the ferromagnetic targets (48), The transducer is completed by a balancing core (34). Application to the measurement of the displacement of control rods in the vessel of a pressurized water reactor. (Fig. 1) B 10277.3 JB ...

Geschwindigkeitsmesser.

Einrichtung zur Messung einer Drehzahl.

Lichtzündmaschine, insbesondere Lichtanlasszündmaschine für Brennkraftmotoren

Geber für ein Gerät zur Messung der Winkelgeschwindigkeit rotierender Objekte

Gyromètre

Gyromètre

TACHO-GENERATOR, IN PARTICULAR FOR MACHINES WITH OVERTURNING PROTECTION.

Remote monitor for angular velocity or orientation

Remote monitor for angular velocity or orientation senses variation of generated rotary electric field coaxial with monitored element ...

SWITCHING CONFIGURATION FOR ELECTRONIC SPEED MEASUREMENT.

PROCEDURE AND DEVICE FOR FAELSCHUNGSSICHEREN THE COLLECTION OF THE WHEEL NUMBER OF REVOLUTIONS OF VEHICLES.

Electrical measuring appts. for level of conductive liq.

The liq. (2) in the container (1) to be measured is pref. normally electrically conductive water. At least one measuring sensor (3) is used with an evaluating circuit. The or each sensor is a dispersive field type with two measuring electrodes (6a,6b) at a set distance apart in the same plane. Pref., the container and teh liq. are part of the measuring arrangement. Alternatively, the electrodes can be in different planes, pref. at an angle to each other. At least one electrode is on the base (5) of the container. The sensor(s) can be produced in planar technique on a substrate. Pref., the evaluating circuit has a microprocessor or is integrated in one. @(15pp Dwg.No.120)@ ...

Sensor module and uses of it for seizing the number of revolutions of a rotary object.

Bei einem Sensormodul zum Erfassen der Drehzahl eines rotierenden Objekts um eine gegenüber der Senkrechten geneigte Achse mit einem Beschleunigungsmesser (21), welcher auf ihn in einer Messrichtung einwirkende Beschleunigungen in ein elektrisches Signal umsetzt, sowie mit einem Microcontroller (22), einem Datenspeicher (23) und einer Schnittstelle (24) für einen Zugriff auf die im Datenspeicher (23) gespeicherten Daten, ist es erfindungsgemäss vorgesehen, dass der Microcontroller (22) das von dem Beschleunigungsmesser (21) erzeugte Signal während einer Messphase abtastet, aus den ermittelten Abtastwerten durch Frequenzanalyse Drehzahlwerte berechnet und diese im Datenspeicher (23) ablegt. Zum Erfassen der Drehzahl eines rotierenden Objekts wird der Sensormodul an dem Objekt zum Mitrotieren und so befestigt, dass die Messrichtung des Beschleunigungsmessers (21) nicht mit dessen geneigter Achsrichtung fluchtet. Der Sensormodul lässt sich insbesondere an der Nabe eines Kraftfahrzeugs befestigen ...

Sensor module and use thereof for detecting the rotational speed of a rotating object.

Bei einem Sensormodul zum Erfassen der Drehzahl eines rotierenden Objekts um eine gegenüber der Senkrechten geneigte Achse mit einem Beschleunigungsmesser (21), welcher auf ihn in einer Messrichtung einwirkende Beschleunigungen in ein elektrisches Signal umsetzt, sowie mit einem Mikrocontroller (22), einem Datenspeicher (23) und einer Schnittstelle (24) für einen Zugriff auf die im Datenspeicher (23) gespeicherten Daten, ist es erfindungsgemäss vorgesehen, dass der Mikrocontroller (22) dazu eingerichtet ist, das von dem Beschleunigungsmesser (21) erzeugte Signal während einer Messphase abzutasten, aus den ermittelten Abtastwerten durch Frequenzanalyse Drehzahlwerte zu berechnen und diese im Datenspeicher (23) abzulegen. Zum Erfassen der Drehzahl eines rotierenden Objekts wird das Sensormodul an dem Objekt zum Mitrotieren und so befestigt, dass die Messrichtung des Beschleunigungsmessers (21) nicht mit dessen geneigter Achsrichtung fluchtet. Das Sensormodul lässt sich insbesondere an der ...

Speedometer

METHOD FOR ADAPTING A DETECTION THRESHOLD OF A CRANKSHAFT SENSOR FOR A MOTOR VEHICLE

SYSTEM OF MEASUREMENT NUMBER OF REVOLUTIONS Of a SYNCHRONOUS MACHINE BY a TECHNIQUE Of SAMPLING

Dispositif electronique de mesure de vitesse et de position d'un arbre tournant

Un seul capteur 1 de type synchro ou resolver, alimente en signal porteur de frequence F/2 delivre un signal d'angle electrique. Un circuit a boucle de reaction determine une mesure codee de l'angle. Un circuit de demodulation et de filtrage 4 comporte un filtre selectif, rejecteur de bande etroite, accorde sur la frequence F.

PROCEEDED Of EXPLOITATION Of INFORMATION NUMBER OF REVOLUTIONS AND POSITION OF ROTATION Of an ENGINE D.C. current HAS

CORE

L'invention concerne un atterrisseur d'aéronef comportant un essieu (3) destiné à recevoir une roue (4) comprenant une jante (6) montée pour tourner sur l'essieu (3) au moyen d'au moins un roulement (8), ledit roulement (8) comprenant une bague intérieure (11) montée autour de l'essieu (3) et une bague extérieure (12) solidaire en rotation de la jante (6) de la roue (4), l'atterrisseur comportant en outre des moyens de mesure (21) destinés à effectuer des mesures d'au moins un paramètre de fonctionnement de l'atterrisseur. Les moyens de mesure (21) sont intégrés au roulement (8) en étant solidarisés à l'une des bagues intérieure ou extérieure du roulement (8).

FEEDBACK CIRCUIT OF ENGINE

Movement transmitter electrical speed sensor

METHOD FOR MEASURING THE MOTOR SPEED HAS D.C. CURRENT FUNCTIONING WITH PERMANENT MAGNETIC EXCITATION AND DEVICE FOR THE REALIZATION OF THIS PROCESS

DEVICE TO TRANSMIT the ROTATION Of a TREE HAS a SECOND TREE

DISPOSITIF D'ELABORATION D'UN SIGNAL DE TACHYMETRIE DE RESOLUTION INFINIE ET SANS ONDULATION A PARTIR D'UN CAPTEUR DE POSITION INDUCTIF

Dispositif d'élaboration d'un signal de tachymétrie de résolution infinie et sans ondulation à partir d'un capteur de position inductif alimenté par un signal sinusoïdal de référence P0 et fournissant deux signaux de phase P1, P2, dispositif dans lequel un circuit résistance-capacité accordé à la fréquence du signal de référence est alimenté par les deux signaux de phase du capteur et fournit un signal sinusoïdal dont l'angle de phase (CF DESSIN DANS BOPI) est proportionnel à la rotation du capteur à un tour près, ce signal étant ensuite numérisé S pour être traité par des comparateurs de phase numériques et des filtres passe-bas avant différentiation, caractérisé par l'utilisation de comparateurs de phase numériques CPN particuliers, associés chacun à un détecteur de retour à zéro DRZ particulier, afin d'élaborer, par une bascule de mémorisation BS et un commutateur électronique COM, le signal tachymétrie sortant ST à l'aide d'un différentiateur unique DIM avec dispositif d'élimination ...

METHOD FOR CONFIGURING AN ELECTRONIC PACKAGE MOUNTED ON A WHEEL OF A MOTOR VEHICLE

ENCODER SEALING APPARATUS

gyro and accelerometer module package

ROLLING BEARING UNIT WITH SENSOR

A sensor device (2) has a magnetostriction sensor (8) for detecting a gap, provided at a stationary side raceway member (3) and located between the stationary side raceway member (3) and a rotating side raceway member (4), and processing means for processing the output of the magnetostriction sensor (8). The processing means is provided with a rotation-detecting portion for obtaining rotational speed of the rotating side raceway member (4) from the number of repetition of variation in the output of the magnetostriction sensor (8), an averaging portion for averaging the output of the magnetostriction sensor (8), and a load-calculating portion for obtaining, from the output averaged by the averaging portion, load applied to a rolling bearing. © KIPO & WIPO 2007 ...

capa de rolamento

DISPOSITIVO PARA A TRANSMISSAO DE MOVIMENTO ROTACIONAL A PARTIR DE UM PRIMEIRO PARA UM SEGUNDO EIXO E PARA MEDIR A VELOCIDADE ANGULAR DO REFERIDO MOVIMENTO ROTACIONAL

Disc brake rotor adapter, disc brake rotor including adapter, magnetism generation device

A disc brake rotor adapter is configured to detect a rotational state of a bicycle wheel. The disc brake rotor includes an adapter and a magnetism generation device. The disc brake rotor adapter is configured to attach a disc brake rotor main body to a hub of a bicycle. The adapter includes an adapter main body, a magnetism generation portion and an attaching portion. The adapter main body includes an inner portion and an outer portion. The inner portion includes a second spline configured to be engaged with a first spline provided on the hub. The disc brake rotor main body is coupled to the outer portion. The attaching portion attaches the magnetism generation portion to the adapter main body in a manner irrelevant to a fixing function of a fixing member. The fixing member is configured to fix the adapter to the hub.

SYSTEMS AND METHODS FOR ESTIMATING ERRORS IN GYROSCOPE SENSORS

... 5 SYSTEMS AND METHODS FOR ESTIMATING ERRORS IN GYROSCOPE SENSORS pEmbodiments of the present disclosure provide systems and methods that establish non-linear components of gyroscope errors which have not been studied 10 or explored earlier. These errors include but are not limited to non-linear dynamic error which is a function of the angular velocity itself. Bias instability has been observed within the same environment of temperature and atmospheric pressure. In other words, the embodiments of the present disclosure analyse and models static bias errors and dynamic non-linear errors in the gyroscope sensor which 15 may pbe pused pto pmodel pand pcorrect perrors paccordingly pin psubsequent measurements. The system provide solution(s) when there is no way of directly estimating ptemperature pfor pbias pcorrection pof pgyroscope, pby pestimating pa temperature change by considering indirect measurements from other sensors present onboard the device. 20 [To be published with FIG. 3] ...

METHOD AND DEVICE FOR THE STABLE, EFFICIENT DETERMINATION OF THE ROTATIONAL DIRECTION AND/OR ROTATIONAL SPEED OF A WHEEL OR A SHAFT

The invention relates to a method and a device for determining the rotational direction and/or the rotational speed of a rotating body on the basis of a sine signal (y) and a cosine signal (x) that are emitted by a sensor and can be assigned to the rotational direction and/or rotational speed of the rotating body. Said method comprises at least one of the following steps: capture of a sine signal (y0) and cosine signal (x0) that can be assigned to the rotational direction and/or rotational speed at a time t0; determination of a phase value φ0 fromthe sine signal (y0) and cosine signal (x0); capture of a sine signal (yi) and cosine signal (xi) that can be assigned to the rotational direction and/or rotational speed at a time ti; determination of phase values φi from the corresponding sine signals (yi) and cosine signals (xi); formation of phase differences Δφi from the phase values φi and the phase values φ0; and determination of the rotational direction and/or rotational speed ω from the ...

ROTATING MACHINE SENSOR

A speed sensor for use in measuring the speed of rotation of a rotationally salient rotating member The speed sensor comprises an electrode and a sensor circuit. The sensor circuit comprises a constant voltage source for supplying a voltage to the electrode to generate an electric field in a dielectric medium. A current detector detects current flow between the constant voltage source and the electrode due to perturbation of the electric field by passage of at least one salient feature of the rotating member through the electric field as the rotating member rotates. The current detector outputs a first signal modulated at a frequency corresponding to the frequency of perturbation of the electric field. The first signal is amplifed to produce an amplified signal modulated at a frequency corresponding to the frequency of perturbation of the electric field. The electrode voltage, the amplifier gain and the electrode position relative to the rotating member are selected such that modulation ...

ORE MILL AND METHOD FOR OPERATING SAID ORE MILL

L'invention concerne un broyeur à minerai qui est entraîné par un moteur (1) annulaire qui présente un induit (7) et un support (3), et le procédé de fonctionnement de ce broyeur à minerai. Le moteur annulaire présente un élément (7) rayonnant permettant d'émettre des rayons électromagnétiques sur l'induit du moteur annulaire ou sur un élément tournant avec l'induit du moteur annulaire, un élément récepteur destiné à recevoir des rayons électromagnétiques réfléchis par l'induit du moteur annulaire ou par l'élément faisant tourner l'induit du moteur annulaire ainsi que des moyens d'évaluation permettant de déterminer l'angle de rotation et/ou le nombre de tours du broyeur à minerai à partir du rayonnement électromagnétique reçu par l'élément récepteur.

INERTIAL SENSOR AND METHOD OF MANUFACTURING THE SAME

Disclosed herein is an inertial sensor including: a flexible part; a mass body connected to the flexible part; and a support part connected to the flexible part and supporting the mass body in a floated state to displace the mass body, wherein the flexible part has an upper piezoresistor disposed on one surface thereof and a lower piezoresistor disposed on the other surface thereof to detect a displacement of the mass body.

Rolling bearing unit with sensor

A sensor device 2 has a magnetostrictive sensor 8 provided on a fixed-side raceway member 3 for detecting a gap between the sensor and a rotation-side raceway member 4, and means for processing the output of the magnetostrictive sensor 8. The processing means comprises a rotation detecting unit for determining the speed of rotation of the rotation-side raceway member 4 from the number of repetitions of a variation in the output of the magnetostrictive sensor 8, a unit for averaging output values of the magnetostrictive sensor 8 and a load calculating unit for determining the load acting on an antifriction bearing from the output averaged by the averaging unit.

METHOD AND APPARATUS TO MONITOR A RESOLVER

A device for monitoring a resolver disposed on a rotatable member is described herein, and includes a controller including a microprocessor circuit and an interface circuit connected to the resolver, wherein the microprocessor circuit includes a dual-core central processing unit (CPU), a pulse generator, a sigma-delta analog-to-digital converter (SDADC), a global memory device, an internal communication bus and a direct memory access device (DMA). The microprocessor circuit is disposed to control the pulse generator to generate an excitation pulse transferable to the excitation winding of the resolver, and control the SDADC to capture data from the secondary windings of the resolver and store the captured data in the memory buffer. A control routine is executed to detect an envelope for the captured data, and a rotor position for the resolver is determined based upon the detected envelope.

Method and apparatus for detemining the rotational speed of turbochargers

The invention relates to a method and a corresponding apparatus for detecting the rotational speed of turbochargers, especially on internal combustion engines in motor vehicles, with the steps: recording the body sound (SE) of the turbocharger and analyzing the frequency spectrum (30, 31, 32, 33) of the recorded body sound (SE). According to the invention, in the analysis of the frequency spectrum several frequency signals (SD1, SD2, SD3) are determined, which represent possible rotational speeds of the turbocharger, an amplitude analysis of the recorded body sound (SE) is performed in order to determine an estimated value (SD-estimate) for the turbocharger speed, and the estimated value (SD-estimate) is correlated with the several frequency signals (SD1, SD2, SD3) in order to determine the frequency signal (SD2) as the actual turbocharger rotational speed (Dactual) which correlates with the greatest probability with the obtained estimate (SD-estimate).

Motor having rotation speed detection mechanism

A motor, wherein a space is established between a rotor and a bracket, includes a rotation speed detection mechanism disposed in the space for detecting the rotation speed of the rotor. This construction may reduce the size of the overall assembly of the motor having the rotation speed detection mechanism.

Doppler rotational velocity sensor

The disclosed invention concept utilizes a homodyne/heterodyne interferometer technique in a modified lidar in such a manner as to sense the rotational velocity magnitude and sense of a rotating (or "spinning") object. Sensing is accomplished in assessing either the Doppler bandwidth of a single axis system or in sensing the frequency separation of Doppler spectrums in a "two" axis system. The technique is unique in that the Doppler bandwidth is linearly proportional to rotational velocity and independent of intercept position in the rotation plane. The technique as disclosed is based on optical fiber lidar techniques, but can be implemented in free-space optics as well. The disclosed invention therefore comprises both a technique for utilization of an optical fiber lidar and a new arrangement of lidar elements. Compact and cost effective, standoff rotation velocity sensors and systems can be fabricated with this technique.

Support member, rotation device comprising such a support and rolling bearing assembly including a detection device

This support member ( 60 ) holds at least two sensors ( 80 ) with respect to a rotating encoder washer ( 20 ) of a rolling bearing assembly ( 2 ). It includes an annular ring ( 62 ) centered on a central axis (X 60 ) and provided with an inner radial surface ( 64 ) which forms an abutment and centering means for each sensor ( 80 ) with respect to the central axis (X 60 ). The support member also includes foot parts ( 70 ) extending perpendicularly with respect to the inner radial surface ( 64 ) and provided with holes ( 72, 74, 76 ) adapted for the passage of connection pins ( 82, 84, 86 ) of the sensors ( 80 ), in order to connect these sensors ( 80 ) to a printed circuit board ( 50 ).

Rolling bearing assembly with rotation sensing means, electric machine provided with such an assembly and fork lift truck comprising such an electric machine

This rolling bearing assembly ( 2 ) comprises a rolling bearing ( 4 ) with an inner ring ( 8 ), an outer ring ( 6 ) and several rolling bodies ( 10 ) between the inner and outer rings, at least one sensor ( 30 ) adapted to detect a rotation parameter of a first ring ( 8 ) with respect to a second ring ( 6 ) of the rolling bearing and a support member ( 40 ) holding the sensor ( 30 ) in position with respect to the rolling bearing ( 4 ). The support member ( 40 ) holds the sensor ( 30 ) in a position such that at least one connecting pin ( 34, 36, 38 ) of the sensor ( 30 ) extends in a volume ( 46 ) defined by the support member ( 40 ) and adapted to accommodate an electrical connector ( 100 ).

Functional device, method of manufacturing the functional device, physical quantity sensor, and electronic apparatus

A functional device according to an embodiment of the invention includes: an insulating substrate; a movable section; movable electrode fingers provided in the movable section; and fixed electrode fingers provided on the insulating substrate and arranged to be opposed to the movable electrode fingers. The fixed electrode fingers include: first fixed electrode fingers arranged on one side of the movable electrode fingers; and second fixed electrode fingers arranged on the other side of the movable electrode fingers. The first fixed electrode fingers and the second fixed electrode fingers are arranged to be spaced apart from each other.

Inertial sensor and angular velocity detection method using the same

Disclosed herein is an inertial sensor including: a driving part displaceably supported by a support; a driving electrode vibrating the driving part; and a detecting electrode detecting a force acting on the driving part in a predetermined direction, wherein the driving part includes: a center driving mass positioned at the center of the inertial sensor; side driving masses connected to and interlocking with the center driving mass and positioned at four sides based on the center driving mass; and connection bridges connecting the center driving mass, the side driving masses, and the support to each other.

Vehicle Stability Systems and Methods

Systems and methods for determining angular velocity of a vehicle. Systems include an array of accelerometers and a computing unit configured to determine angular velocity as a function of acceleration measured by the array of accelerometers. Angular velocity can then be used, for example, by stability systems to control the vehicle.

ROTATING MACHINE SENSOR

A speed sensor for use in measuring the speed of rotation of a rotationally salient rotating member. The speed sensor comprises an electrode and a sensor circuit. The sensor circuit comprises a constant voltage source for supplying a voltage to the electrode to generate an electric field in a dielectric medium. A current detector detects current flow between the constant voltage source and tire electrode due to perturbation of tire electric field by passage of at least one salient feature of the rotating member through the electric field as the rotating member rotates. The current detector outputs a first signal modulated at a frequency corresponding to the frequency of perturbation of the electric field. The first signal is amplified to produce an amplified signal modulated at a frequency corresponding to the frequency of perturbation of the electric field. The electrode voltage, the amplifier gain and the electrode position relative to the rotating member are selected such that modulation of the second signal is predominantly caused by perturbation of the electric field within the dielectric medium by the creation and/or movement of ions within the field. 1. A speed sensor for use in measuring the speed of rotation of a rotationally salient rotating member , the speed sensor comprising an electrode and a sensor circuit;the sensor circuit comprising:a constant voltage source for supplying a voltage to the electrode to generate an electric field in a dielectric medium between, the electrode and the rotating member;a current detector for detecting current flow between the constant voltage source and the electrode due to perturbation of the electric field by passage of at least one salient feature of the rotating member through the electric field as the rotating member rotates, the current detector outputting a first signal modulated at a frequency corresponding to the frequency of perturbation of the electric field; andan amplifier circuit comprising a signal ...

Technique for compensating for abnormal output of resolver for environmentally friendly vehicle

Disclosed is a technique for compensating for an abnormal output of a resolver. More specifically, a central processing unit (CPU) sets a current motor position angle before compensation θ n,ORG as a current motor position angle θ n and obtains a motor position change Δθ n [rad] between a current sampling [n] and a previous sampling [n−1] and a motor position change Δθ n-1 [rad] between the previous sampling [n−1] and a more previous sampling [n−2]. Subsequently, a variable A is calculated based on the above angles. The CPU determines whether to perform the compensation by comparing the calculated variable A and a calibration variable K and calculates a current motor position angle for compensation θ n [rad]. Finally, the CPU compensates for the absence of motor rotor position information with the calculated current motor position angle for compensation θ n [rad].

SENSOR FOR DETECTING ACCELERATION AND ANGULAR VELOCITY

A sensor includes an acceleration detector, an angular velocity detector, a driver, and first to fourth springs. Each detector includes a pair of fixed electrodes, a pair of movable electrodes, and a pair of supporting members for supporting the movable electrodes. The driver causes the supporting members to vibrate in opposite phases in a first direction. The first spring couples the supporting members of the acceleration detector and has elasticity in a second direction perpendicular to the first direction. The second spring couples the supporting members of the acceleration detector to a base and has elasticity in both directions. The third spring couples the supporting members of the acceleration detector to the supporting members of the angular velocity detector and has elasticity in both directions. The fourth spring couples the supporting members to the movable electrodes of the angular velocity detector and has elasticity in the second direction. 110-. (canceled)11. A sensor for detecting acceleration and angular velocity , the sensor comprising:a base;an acceleration detector including a pair of first fixed electrodes, a pair of first movable electrodes, a pair of weights, and a pair of first supporting members configured to support the pair of first movable electrodes and joined to the pair of weights;an angular velocity detector including a pair of second fixed electrodes, a pair of second movable electrodes, and a pair of second supporting members configured to support the pair of second movable electrodes;a driver configured to cause the pair of first supporting members to vibrate in opposite phases in a first direction and configured to cause the pair of second supporting members to vibrate in opposite phases in the first direction;a first spring configured to couple the pair of first supporting members together, the first spring having elasticity in the first direction;a second spring configured to couple the pair of first supporting members to the ...

Device for measuring the torque, the direction of rotation and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission of a wind power plant

A device for measuring the torque, the direction of rotation, and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission, includes bands configured to be mounted in a fixed position on an outer circumference of the shaft. The bands are configured to be detected by measuring sensors and allow torsion of the shaft to be measured. Each of the measuring sensors has a Hall effect sensor, and the bands are respectively arranged at two different positions on the outer circumference of the shaft. Each of the bands includes polygonal apertures and/or depressions having webs located between the apertures and/or depressions. The webs are configured to be detected by the measuring sensors. A method includes operating the device to measure the torque, the direction of rotation, and the speed of rotation of the shaft.

ROTARY SPEED DETECTION METHOD AND DEVICE THEREFOR, REACTION LIQUID VISCOSITY DETECTION METHOD AND DEVICE THEREFOR, AND METHOD FOR MANUFACTURING REACTION PRODUCT

The method for detecting rotary speed includes: a step (I) for deeming the difference between input power (P) and loss power (A) to be a first order approximation value (PM) of the mechanical output of an induction motor, and for obtaining a first approximation value (N=N(1−S)) (Nis the synchronous speed) of the rotary speed from the functional relationship (PM=κS) of the output (PM) and slip (S) known for the induction motor; a step (II) for obtaining loss power (B) based on the value (N); and a step (III) for deeming a second order approximation value (PM) of the motor output to be P−(A+B), and for obtaining a second order approximation value (N=N(1−S)) of the rotary speed from the functional relationship (PM=κS) (κ is the motor constant) of the output (PM) and slip (S). 1. A detection method of a rotary speed of a rotating shaft of an induction motor , wherein the detection method is that when a power input P is supplied to the induction motor , the rotary speed of the rotating shaft of the induction motor is detected , the detection method comprising: [{'sub': L', 'L, 'when the power input P is supplied, setting a loss power to be P, dividing the loss power Pinto a non-depending loss power A that does not depend on the rotary speed of the rotating shaft of the induction motor and a depending loss power B that depends on the rotary speed;'}, {'sub': '1', 'considering a difference between the power input P and the non-depending loss power A as a first order approximation value PMof mechanical output of the induction motor; and'}, {'sub': 1', '1', '1', '1', '1', 'S', '1', 'S, 'from an equation PM=αS(α is a motor constant) of an output PMgiven in the induction motor and a slip S, obtaining a first order approximation value of the rotary speed of the rotating shaft N=N(1−S) (Nis a synchronous speed);'}], 'a step I, comprising{'sub': 1', '1, 'a step II, based on the first order approximation value N, obtaining the depending loss power B; and'} [{'sub': 2', '1, ' ...

Systems and Methods for Reliable Motion Control of Virtual Tour Applications

The present invention relates to systems and methods for reliably detecting motion control of mobile devices executing virtual tour applications. In one embodiment, a computerized mobile device reliably detects angular rotations. The mobile device includes a magnetometer for generating directional values representing the respective angular rotations. The mobile device detects abrupt change(s) in additional directional values relative to the prior directional values, and if an abrupt change in an additional directional value is detected, then an appropriate weight is assigned to the additional data value. In addition to generating directional values, the magnetometer may also generate corresponding magnitude values. The mobile device evaluates the corresponding magnitude values and if an amplitude of a magnitude value is greater than a threshold, then the mobile device decreases a confidence value associated with the corresponding directional value. 1. A computerized method for reliably detecting an angular rotation of mobile device having a magnetometer , the mobile device configured to be hand-held by a user , the method comprising:receiving a plurality of directional values from a magnetometer of a mobile device;receiving an additional directional value from the magnetometer;detecting an abrupt change in the additional directional value relative to the plurality of directional values; andif the abrupt change in the additional directional value is detected, then assigning an appropriate weight to the additional data value.2. The method of further comprising providing a weighted directional value to a virtual tour application executing on the mobile device.3. The method of wherein the detection of the abrupt change includes detecting a rate of change of the additional directional value.4. The method of wherein the detection of the rate of change includes detecting a rate of change that is higher than a threshold.5. The method of wherein the weight assigned to the ...

Sensor Subassembly for a Vehicle and Device for Measuring Rotational Movements of a Wheel Bearing

A sensor subassembly for a vehicle has at least one sensor unit arranged in a cap-shaped plastic part. The cap-shaped plastic part is carried by a retaining bush and seals off the retaining bush at one end. An associated device is configured to measure rotational movement of a wheel bearing. A resilient sealing and compensating element in pressed in between the-shaped plastic part and the retaining bush, in a first sealing area for sealing off a first leakage path, so that the cap-like plastic part, in conjunction with the sealing and compensating element, seals off the retaining bush tightly at one end.

Rolling bearing unit with encoder for supporting wheel

Construction is achieved that is able to prevent strain deformation in the axial direction of a flat plate section 21 of a cover 19 a when a cylinder section 20 of the cover 19 a, which covers the opening on the inside end in the axial direction of an internal space where an encoder 1 is located, is fitted into and fastened to the inside end section in the axial direction of an outer ring 7. A non-contact section 26 a is formed all the way around the inside end section in the axial direction of the cylinder section 20 such that the outer diameter is smaller than the inner diameter of the inside end section in the axial direction of the outer ring, and the dimension L 26 in the axial direction is two times or more the thickness dimension t 19 of a plate member of the cover 19 a. With the cover 19 a fitted into the inside end section in the axial direction of the outer ring 7, only the portion of the cylinder section 20 that is nearer the outside in the axial direction than the non-contact section 26 a is substantially fitted into the inside end section in the axial direction of the outer ring 7 with an interference fit.

ELECTRIC-DRIVE TRACTABILITY INDICATOR INTEGRATED IN HYBRID ELECTRIC VEHICLE TACHOMETER

An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle. 1. An indicator of electric drive usability in a hybrid vehicle , comprising:a tachometer that includes a display having an all-electric drive portion and a hybrid drive portion, the all-electric drive portion and the hybrid drive portion sharing a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle.2. The indicator of claim 1 , wherein the tachometer display includes endpoints defined by a second boundary of the all-electric drive portion and a second boundary of the hybrid drive portion.3. The indicator of claim 2 , wherein the all-electric drive portion of the display is calibrated so that the second boundary of the all-electric drive portion corresponds to maximum electric drive usability.4. The indicator of claim 1 , wherein electric drive usability is represented by indicating within the all-electric drive portion of the display one of percent battery discharge claim 1 , percent maximum torque provided by the electric drive claim 1 , and percent electric drive to hybrid drive operating costs.5. The indicator of claim 4 , wherein the all-electric drive portion of the display indicates the greater of percent battery discharge claim 4 , percent maximum torque provided by the electric drive claim 4 , and percent electric drive to hybrid drive ...

PIEZOELECTRIC FILM AND METHOD OF MANUFACTURING THE SAME, INK JET HEAD, METHOD OF FORMING IMAGE BY THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY BY THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER USING THE PIEZOELECTRIC GENERATING ELEMENT

It is an object of the present invention to provide a lead-free piezoelectric film including a lead-free ferroelectric material and having low dielectric loss and high piezoelectric performance comparable to that of PZT, and a method of manufacturing the lead-free piezoelectric film. 1. A piezoelectric film comprising a (NaBi)TiO—BaTiOlayer with a (110) orientation only , where 0.30≦x≦0.46 and 0.51≦y≦0.62 ,{'sub': x', 'y', '0.5x+1.5y+2', '3, 'wherein the (NaBi)TiO—BaTiOlayer has composition around a Morphotropic Phase Boundary and'}{'sub': x', 'y', '0.5x+1.5y+2', '3, 'the (NaBi)TiO—BaTiOlayer further contains manganese as an impurity.'}2. The piezoelectric film according to claim 1 , further comprising:a first electrode with a (110) orientation, wherein{'sub': x', 'y', '0.5x+1.5y+2', '3, 'the first electrode and the (NaBi)TiO—BaTiOlayer are laminated.'}3. The piezoelectric film according to claim 2 , whereinthe first electrode is made of metal.4. The piezoelectric film according to claim 3 , whereinthe metal is platinum, palladium, or gold.5. The piezoelectric film according to claim 4 , whereinthe metal is platinum.6. An ink jet head comprising:a piezoelectric film having a piezoelectric layer sandwiched between a first electrode and a second electrode;a vibration layer bonded to the piezoelectric film; anda pressure chamber member having a pressure chamber for storing ink and bonded to a surface of the vibration layer opposite to a surface to which the piezoelectric film is bonded, whereinthe vibration layer is bonded to the piezoelectric film so that the vibration layer is displaceable in its film thickness direction according to a deformation of the piezoelectric film produced by a piezoelectric effect,the vibration layer and the pressure chamber member are bonded to each other so that a volumetric capacity of the pressure chamber changes according to a displacement of the vibration layer and so that the ink in the pressure chamber is ejected according to a ...

Angular Rate Sensor with Improved Aging Properties

An angular velocity sensor is described with improved ageing and hysteresis properties. The sensor may be of a ring type driven by a driver circuit, the sensor further comprising primary and secondary portions having corresponding signal pickoffs. The gain of the primary pickoff signal and the capacitance of the primary portions of the sensor are controlled relative to the gain of the secondary pickoff and the capacitance of the secondary portions of the sensor. Control electronics is provided that enables matching of the relative signals from the respective channels. In this way, temperature hysteresis and ageing effects of materials used in forming the sensor are overcome. 1. An angular velocity sensor having improved hysteresis and ageing properties the sensor comprising primary and secondary sensor elements , the sensor further comprising primary and secondary channels connected to said primary and secondary elements , the primary channel comprising primary driver means for initiating and maintaining resonant oscillations in the primary elements , the secondary channel comprising detector means for detecting signals generated by the secondary elements in response to movement of the sensor , the detecting means generating an output signal dependent upon the movement of the sensor , wherein the primary and secondary elements of the sensor are intentionally formed from different volumes of material such that the deterioration of the sensor material does not affect the gain of the primary and secondary channels.2. A sensor according to in which the capacitance of the primary transducer element is varied with respect to the capacitance of the secondary transducer element by virtue of the increased volume of material from which the primary transducer element is formed.3. A sensor according to in which the transducer elements are formed from any suitable piezoelectric material.4. A sensor according to in which the piezoelectric material is Lead Zirconate Titanate (PZT ...

SENSOR ARRANGEMENT TO DETERMINE ROTATIONAL SPEEDS

A sensor arrangement and method for an inductively rotational sensor consisting of a remote clone coil connected to a processor. The clone coil is located between a proximity sensor including a sensor and a rotating target so that when in an input or interrogatory mode rotational speed of the targets on a rotatable body is detected by the clone coil as a base rotational speed. The processor and the clone coil in an injection or output mode presenting emulating pulses to the sensor to mask the normal sensor coil to target interaction so the sensor coil sees the emulating pulses as the indicator of rotational speed. The emulating pulses proportional to the base speed and adjustable to desired levels of variation from the base speed as a reference. 1. A sensor arrangement for a target upon a rotatable body and an sensor coil interaction , the arrangement comprising a clone coil for location in use between the target and the sensor coil whereby in use a first clone coil configuration in an interrogatory mode provides base pulses to a processor at a base rate indicative of a base speed of a rotatable body in use having a target and in a second clone coil configuration in an injection mode provides emulating pulses in use to an sensor coil at a rate proportionate to the base speed2. A sensor arrangement for a target upon a rotatable body and an sensor coil interaction , the arrangement comprising a clone coil for location in use between the target and the sensor coil , the clone coil configured to provide:—a. In a first clone coil configuration provide a substantively open circuit be effective transparent to the target and the sensor coil interaction as the target rotates in use;b. In the first clone coil configuration to interact with the sensor coil whereby base pulses are induced periodically in the clone coil at a base rate proportional to the target motion relative to the sensor coil and the base pulses provided to a processor; and,c. In a second clone coil ...

ROTATION SPEED DETECTING APPARATUS

A rotation speed detecting apparatus, including: an annular fixing member to be fixed to a support member configured to rotatably support a rotating object to be detected; a case mounted to the fixing member; a detecting portion abutting against an abutment portion provided in the case so as to be positioned with respect to the case for detecting a rotation speed of the rotating object to be detected; and a resin mold portion formed by resin molding and configured to fix the detecting portion to the case in a state in which the detecting portion abuts against the abutment portion of the case. 15-. (canceled)6. A rotation speed detecting apparatus , comprising:an annular fixing member to be fixed to a support member configured to rotatably support a rotating object to be detected;a case mounted to the fixing member;a detecting portion abutting against an abutment portion provided in the case mounted on the fixing member so as to be positioned with respect to the case for detecting a rotation speed of the rotating object to be detected; anda resin mold portion formed by resin molding and configured to fix the detecting portion to the case in a state in which the detecting portion abuts against the abutment portion of the case.7. A rotation speed detecting apparatus according to claim 6 , wherein the case is formed by resin molding claim 6 , andthe fixing member is provided with a detecting portion insertion hole into which the detecting portion is inserted and through-holes into which a resin for forming the case flows, the through-holes being provided on both sides of the detecting portion insertion hole in a circumferential direction of the fixing member.8. A rotation speed detecting apparatus according to claim 6 , wherein the detecting portion has an abutment portion claim 6 , which abuts against the abutment portion of the case claim 6 , andthe abutment portion of the detecting portion abuts against the abutment portion of the case so that the detecting portion ...

Angle-based speed estimation of alternating current machines utilizing a median filter

A computer-implemented method for estimating a rotor speed of an alternating current (AC) machine is provided. The method includes determining a stator flux signal based on signals of voltage and current inputs to the AC machine, and determining a rotor flux signal of the AC machine based on the determined stator flux signal. The method includes determining an electrical angle signal based on the determined rotor flux signal, and deriving an electrical frequency signal from the determined electrical angle signal. Subsequently, the method includes sampling the derived electrical frequency signal at a predetermined sampling rate, and storing a predetermined number of sample values. The method further includes evaluating a median value of the predetermined set of electrical frequency sample values, determining a slip frequency value of the AC machine, and determining the rotor speed of the AC machine by subtracting the slip frequency value from the electrical frequency median value.

Method And Device For Measuring The Speed Of A Rolling Stock

A method is disclosed for determining the speed of a rolling stock, for example the belt speed of a rolling belt, wherein electromagnetic radiation in the microwave range is transmitted to the rolling stock by at least one transmitting and receiving device and the belt speed is determined on the basis of the reflected and received reflection signal in an evaluation device. A device for carrying out such method is also disclosed.

Sensor

Disclosed herein is a sensor. A sensor according to the present invention includes a mass body, a fixing part disposed so as to be spaced apart from the mass body, a first flexible part connecting the mass body with the fixing part in a Y-axis direction, a second flexible part connecting the mass body with the fixing part in an X-axis direction, and a membrane disposed over the second flexible part and having a width in a Y-axis direction larger than a width in a Y-axis direction of the second flexible part. Here, a width of an X-axis direction of the first flexible part is larger than a thickness in a Z-axis direction thereof and a thickness in a Z-axis direction of the second flexible part is larger than a width in a Y-axis direction thereof.

Rolling bearing device with rotation detection function

A rolling contact bearing device with rotation detection function, includes a rolling bearing, a sensor housing, an encoder and a sensor mount board. The rolling bearing is configured to come in contact with an outer peripheral surface of a shaft. The sensor housing that is annular includes a first axial segment forming a bearing mount segment configured to mount an outer ring of the rolling bearing. The sensor housing also includes a second axial segment forming an encoder accommodation segment that is axially offset from the bearing mount segment. The encoder may be accommodated in an interior space of the encoder accommodation segment. The encoder may rotate integrally with the shaft. The sensor mount board is configured to be positioned between the encoder accommodation segment and the encoder. The sensor mount board includes a sensor mounted thereon to sense the encoder.

MEASURING SPEED OF ROTATION OF A DOWNHOLE MOTOR

The invention relates to downhole motors for rotating drill bits. The downhole motors may comprise stators, turbines or the like. The drilling motor may comprise a drilling apparatus comprising a drill bit connected to a rotor rotatably housed within a stator (or a turbine rotor in a housing), the rotor comprising at least one magnetic field source or magnetic field detector, and the stator comprising at least one magnetic field source if the rotor comprises a magnetic field detector or comprising at least one magnetic field detector if the rotor comprises a magnetic field source, thereby allowing the rotation speed of the rotor relative to the stator to be measured. 1. A drilling apparatus , comprising: the rotor comprising at least one magnetic field source or magnetic field detector, and', 'the stator comprising at least one magnetic field source if the rotor comprises a magnetic field detector or', 'the stator comprising at least one magnetic field detector if the rotor comprises a magnetic field source., 'a drill bit connected to a rotor rotatably housed within a stator,'}2. A drilling apparatus according to claim 1 , further comprising a detector and any two selected from the group consisting of an additional detector claim 1 , a first magnetic field source and a second magnetic field source claim 1 , distinctive from the first claim 1 , arranged never to be collinear with the centre of the rotor at any point during a full revolution of the rotor within the stator.3. A drilling apparatus according to claim 2 , wherein the first source is a north pole and the second source is a south pole.4. A drilling apparatus according to claim 2 , wherein a detected strength of one magnetic field source is measurably different to the second one.5. A drilling apparatus according to claim 1 , wherein the rotor and stator comprise at least two magnetic field sources and at least two magnetic field detectors.6. A drilling apparatus according to claim 1 , further comprising a ...

Apparatus and Method for Providing an Output Signal Indicative of a Speed of Rotation and a Direction of Rotation of a Ferromagnetic Object

An apparatus and a method provide an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object capable of rotating. A variety of signal formats of the output signal are described. 1. A rotation detector , comprising:a magnetic field sensor for providing an output signal proportional to a magnetic field associated with a ferromagnetic object capable of rotating;one or more detector circuits coupled to receive the output signal from the magnetic field sensor, each configured to detect a rotation of the ferromagnetic object, the one or more detector circuits configured to generate a respective one or more output signals, each output signal having respective rising and falling edges; and 'a plurality of pulses, each one of the plurality of pulses having a leading edge with a transition direction indicative of the direction of rotation.', 'an output protocol circuit coupled to receive the one or more output signals from the one or more detector circuits and configured to generate an output signal indicative of a speed of rotation of the ferromagnetic object and also indicative of a direction of rotation of the ferromagnetic object, wherein the output signal generated by the output protocol circuit comprises2. The rotation detector of claim 1 , wherein a frequency of the plurality of pulses is indicative Of the speed of rotation of the ferromagnetic object.3. The rotation detector of claim 1 , wherein ones of the plurality of pulses have time durations in a range of about five to five hundred milliseconds.48-. (canceled)9. The rotation detector of claim 1 , wherein the plurality of pulses comprise current pulses.10. The rotation detector of claim 1 , wherein the plurality of pulses comprise voltage pulses.11. The rotation detector of claim 1 , wherein the magnetic field sensor comprises:a first Hall effect element; anda second Hall effect element disposed a distance away from the first Hall effect element.12. The rotation ...

Apparatus and Method for Providing an Output Signal Indicative of a Speed of Rotation and a Direction of Rotation of a Ferromagnetic Object

An apparatus and a method provide an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object capable of rotating. A variety of signal formats of the output signal are described. 1. A rotation detector , comprising:a magnetic field sensor for providing an output signal proportional to a magnetic field associated with a ferromagnetic object capable of rotating;one or more detector circuits coupled to receive the output signal from the magnetic field sensor, each configured to detect a rotation of the ferromagnetic object, the one or more detector circuits configured to generate a respective one or more output signals, each output signal having respective rising and falling edges; and 'instances of a first pulse set when the ferromagnetic object is rotating in a first direction and instances of a second different pulse set when the ferromagnetic object is rotating in a second different direction, wherein each instance of the first pulse set consists of a first quantity of pulses having one or more pulses and each instance of the second pulse set consists of a second different quantity of pulses having one or more pulses.', 'an output protocol circuit coupled to receive the one or more output signals from the one or more detector circuits and configured to generate an output signal indicative of a speed of rotation of the ferromagnetic object and also indicative of a direction of rotation of the ferromagnetic object, wherein the output signal generated by the output protocol circuit comprises2. The rotation detector of claim 1 , wherein a frequency of occurrence of the instances of the first pulse set or a frequency of occurrence of the instances of the second pulse set are indicative of the speed of rotation of the ferromagnetic object.3. The rotation detector of claim 1 , wherein ones of a pulse within the instances of the first pulse set or a pulse within the instances of the second pulse set have time durations in a ...

DRIVING A ROTATING DEVICE BASED ON A COMBINATION OF SPEED DETECTION BY A SENSOR AND SENSOR-LESS SPEED DETECTION

Some of the embodiments of the present disclosure provide a method comprising detecting, based on a sensor and a back electromagnetic force generated in a rotating device, a speed of the rotating device; and based on (i) the speed detected using the sensor or (ii) the speed detected using the back electromagnetic force, driving the rotating device. 1. A method comprising:detecting, based on a sensor and a back electromagnetic force generated in a rotating device, a speed of the rotating device; andbased on (i) the speed detected using the sensor or (ii) the speed detected using the back electromagnetic force, driving the rotating device.2. The method of claim 1 , wherein detecting the speed of the rotating device further comprises:during a start-up of the rotating device, detecting, based on the sensor, the speed of the rotating device; and detecting the back electromagnetic force generated in the rotating device, and', 'detecting, based on the detected back electromagnetic force generated in the rotating device, the speed of the rotating device., 'subsequent to the start-up of the rotating device and while the speed of the rotating device is higher than a threshold speed,'}3. The method of claim 1 , wherein detecting the speed of the rotating device further comprises:while the speed of the rotating device is lower than a threshold speed, detecting, based on the sensor, the speed of the rotating device; and detecting the back electromagnetic force generated in the rotating device, and', 'detecting, based on the detected back electromagnetic force generated in the rotating device, the speed of the rotating device., 'while the speed of the rotating device is higher than the threshold speed,'}4. The method of claim 3 , further comprising:while the speed of the rotating device is lower than the threshold speed, refraining from detecting the speed of the rotating device using the back electromagnetic force.5. The method of claim 3 , wherein detecting the speed of the ...

DETERMINATION APPARATUS, SENSOR APPARATUS, DETERMINATION METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM

A determination apparatus acquires a feature amount of a whipping motion of a foot and determines a gait disorder risk on the basis of the feature amount. 1. A determination apparatus comprising:at least one memory configured to store instructions; andat least one processor configured to execute the instructions to:acquire a feature amount of a whipping motion of a foot; anddetermine a gait disorder risk on the basis of the feature amount.2. The determination apparatus according to claim 1 , wherein the at least one processor is configured to calculate the feature amount on the basis of an acceleration or an angular velocity of the foot.3. The determination apparatus according to claim 2 , wherein the at least one processor is configured to calculate the feature amount in a whipping motion determination period from a pre-swing to an initial swing of any leg in a walking motion cycle of a person.4. The determination apparatus according to claim 1 , wherein the at least one processor is configured to determine the gait disorder risk on the basis of a comparison between the feature amount related to a user and a past feature amount related to the user.5. The determination apparatus according to claim 1 , wherein the at least one processor is configured to determine the gait disorder risk on the basis of a comparison between the feature amount related to one foot of a user and the feature amount related to the other foot of the user.6. The determination apparatus according to claim 1 , wherein the at least one processor is configured to determine the gait disorder risk on the basis of a comparison between the feature amount related to a user and a feature amount related to another user.7. The determination apparatus according to claim 2 , whereinthe acceleration or the angular velocity is measured by a sensor provided in a sole of a shoe attached to the foot, andthe feature amount is a rotation angle around a leg axis with a vicinity of an ankle of the foot as an origin ...

SENSOR DEVICES AND METHODS FOR PRODUCING SENSOR DEVICES

A sensor device comprises a magnet having a magnetization in a first direction. Furthermore, the sensor device comprises a differential magnetic field sensor arranged on the magnet and having a first sensor element and a second sensor element, wherein the sensor elements are spaced apart in a second direction perpendicular to the first direction. The first sensor element and the second sensor element are designed to detect a magnetic field component in a third direction perpendicular to the first direction and perpendicular to the second direction. 1. A sensor device , comprising:a magnet having a magnetization in a first direction; and wherein the first sensor element and the second sensor element are spaced apart in a second direction perpendicular to the first direction,', 'wherein the first sensor element and the second sensor element are designed to detect a magnetic field component in a third direction perpendicular to the first direction and perpendicular to the second direction., 'a differential magnetic field sensor arranged on the magnet and having a first sensor element and a second sensor element,'}2. The sensor device as claimed in claim 1 , wherein the sensor device is arranged relative to a ferromagnetic wheel claim 1 , wherein the ferromagnetic wheel is designed to rotate about a rotation axis extending in the third direction.3. The sensor device as claimed in claim 2 , wherein the first sensor element and the second sensor element are designed to detect a speed of the ferromagnetic wheel.4. The sensor device as claimed in claim 2 , wherein the sensor device and the ferromagnetic wheel are separated by an air gap.5. The sensor device as claimed in claim 1 , wherein a main surface of the differential magnetic field sensor facing the magnet is arranged parallel to a plane spanned by the first direction and the second direction.6. The sensor device as claimed in claim 1 , wherein the differential magnetic field sensor comprises a Hall sensor that is ...

WHEEL POSITION DETECTING DEVICE AND TIRE PRESSURE DETECTING APPARATUS HAVING THE SAME

In a wheel position detecting device, a receiver acquires gear information indicating a tooth position of a gear rotating in association with a corresponding wheel at a predetermined interval. In a wheel position detection, the receiver sets a variation allowance range based on the tooth position at a reception timing of a frame transmitted from a transmitter integrated to each wheel. When the tooth position of the gear at a subsequent reception timing of the frame is not within the variation allowance range, the receiver excludes the wheel corresponding to the gear from a candidate wheel. The receiver registers the wheel remaining last as the wheel to which the transmitter is integrated. The receiver performs the wheel position detection only when a wheel speed is higher than a predetermined threshold, so that the wheel position detection is performed based on an accurate tooth position. 1. A wheel position detecting device for a vehicle having a vehicle body and a plurality of wheels , the wheel position detecting device comprising:a transmitter being integrated to each of the plurality of wheels, the transmitter including a first control unit generating and transmitting a frame including identification information specific to the transmitter; anda receiver being integrated to the vehicle body, the receiver including an antenna and a second control unit, the second control unit receiving the frame transmitted from the transmitter through the antenna, the second control unit performing a wheel position detection to specify which of the plurality of wheels the transmitter transmitting the frame is integrated to and to store a relationship between the identification information of the transmitter and the wheel to which the transmitter is integrated, whereinthe transmitter includes an acceleration sensor that outputs a detection signal according to an acceleration containing a gravitational acceleration component that varies with rotation of the wheel to which the ...

POWER TOOL WITH ELECTRONIC CONTROL OF MULTIPLE SPEEDS

A power tool including a motor configured to rotatably drive an output shaft, a variable motor speed control input, a motor speed limit input, and a motor controller. The motor controller includes an electronic processor and a memory configured to store instructions. When executed by the motor controller, the instructions configure the motor controller to detect a motor speed limit from a setting of the motor speed limit input, and detect a variable speed control setting from the variable motor speed control input. The motor controller generates a motor speed control signal for driving the motor based on the detected motor speed limit and the detected variable motor speed control setting, and transmits the motor speed control signal to a motor driver circuit configured to drive the motor at a speed based on the motor speed control signal. 1. A power tool , comprising:a motor configured to rotatably drive an output shaft coupled to the motor;a variable motor speed control input;a motor speed limit input; and detect a motor speed limit from a setting of the motor speed limit input,', 'detect a variable speed control setting from the variable motor speed control input,', 'generate a motor speed control signal for driving the motor based on the detected motor speed limit and the detected variable motor speed control setting; and', 'transmit the motor speed control signal to a motor driver circuit configured to drive the motor at a speed based on the motor speed control signal., 'a motor controller connected to the variable motor speed control input and the motor speed limit input, the motor controller including an electronic processor and a memory configured to store instructions that when executed by the motor controller configures the motor controller to2. The power tool of claim 1 , further comprising a motor speed sensor.3. The power tool of claim 2 , wherein the motor controller is further configured to:detect a measured motor speed using the motor speed sensor; ...

MULTI-AXIAL ANGULAR VELOCITY SENSOR

In a multi-axial angular velocity sensor, a substrate part perpendicular to a D3 axis includes a pair of long sides parallel to a D2 axis and a pair of short sides parallel to a D1 axis. Three sensor elements for the three axes are mounted on an upper surface of the substrate part. A piezoelectric body of each of the sensor elements comprises a plurality of arms. Theses arms extend in a predetermined direction of extension in a plane perspective of the upper surface. The piezoelectric body has the direction of extension as its long direction. Two of the three sensor element are arranged side by side in a direction along the short sides of the substrate part with orientations so that the directions of extension become parallel to the long sides. A remaining one is arranged in a direction along the long sides relative to the two elements with an orientation so that the direction of extension becomes parallel to the short sides. 1. A multi-axial angular velocity sensor comprising:a package comprising a substrate part, the substrate part comprising a first surface perpendicular to a third axis among a first axis, second axis, and the third axis which are perpendicular to each other, an outer edge of the first surface comprising a pair of long sides parallel to the second axis and a pair of short sides parallel to the first axis;a first axial element which is mounted on the first surface and detects an angular velocity about the first axis;a second axial element which is mounted on the first surface and detects the angular velocity about the second axis; anda third axial element which is mounted on the first surface and detects the angular velocity about the third axis; a piezoelectric body comprising a plurality of arms extending in a predetermined direction of extension in a plan perspective of the first surface and having the predetermined direction of extension as a long direction of the piezoelectric body,', 'an excitation electrode on a portion of the plurality of ...

ADAPTIVE AUTOMATIC GAIN CONTROL APPARATUS AND METHOD FOR INERTIAL SENSOR

Disclosed herein are an adaptive automatic gain control apparatus and method for an inertial sensor. The adaptive automatic gain control apparatus for an inertial sensor, includes: a displacement measuring unit measuring and outputting a driving displacement of the inertial sensor; and a controlling unit driving the inertial sensor using an initial driving signal and then resetting a driving signal while changing a margin value using the driving displacement measured by the displacement measuring unit, thereby driving the inertial sensor. 1. An adaptive automatic gain control apparatus for an inertial sensor , comprising:a displacement measuring unit measuring and outputting a driving displacement of the inertial sensor; anda controlling unit driving the inertial sensor using an initial driving signal and then resetting a driving signal while changing a margin value using the driving displacement measured by the displacement measuring unit, thereby driving the inertial sensor.2. The adaptive automatic gain control apparatus for an inertial sensor as set forth in claim 1 , further comprising a low pass filter filtering noise from the driving displacement measured by the displacement measuring unit to provide the driving displacement from which the noise is filtered to the controlling unit.3. The adaptive automatic gain control apparatus for an inertial sensor as set forth in claim 1 , wherein the controlling unit drives the inertial sensor using the initial driving signal claim 1 , calculates a driving deviation by subtracting the driving displacement measured by the displacement measuring unit from a driving displacement target value after a predetermined time elapses claim 1 , and resets the driving signal while decreasing the margin value when the calculated driving deviation is in the range of an initial maximum margin value claim 1 , thereby driving the inertial sensor.4. The adaptive automatic gain control apparatus for an inertial sensor as set forth in claim ...

Sensor with symmetrically embedded sensor elements

A sensor for detecting a physical variable, including: —a sensor element for outputting an electrical signal dependent on the physical variable, —a substrate carrying the sensor element, —a printed circuit board, conducting the electrical signal, on the substrate, and —an embedding compound, in which the sensor element is completely embedded and the printed circuit board is at least partly embedded, —wherein at least one compensation element is embodied in the embedding compound, by which compensation element a mechanical stress caused by an element of the sensor at least partly embedded in the embedding compound is counteracted.

Processing Downhole Rotational Data

Systems and methods for processing downhole rotational data. An example method includes commencing operation of a processing device to continually calculate a downhole oscillation index by receiving downhole rotational speed data indicative of downhole rotational speed of at least a portion of a drill string during drilling operations, calculating a fundamental oscillation time period of the drill string, calculating a time length of a time window based on the fundamental oscillation time period, and processing the downhole rotational speed data encompassed within the time window. 1. An apparatus comprising:a rotation sensor operable to facilitate downhole rotational speed data indicative of downhole rotational speed of at least a portion of a drill string during drilling operations;a visual output device; and [ receiving the downhole rotational speed data;', 'calculating a fundamental oscillation time period of the drill string;', 'calculating a time length of a time window based on the fundamental oscillation time period; and', 'processing the downhole rotational speed data encompassed within the time window; and, 'calculate a downhole oscillation index by, 'output the downhole oscillation index for display on the visual output device to be viewed by a drill rig operator, wherein the drill rig operator changes parameters of the drilling operations based on the downhole oscillation index displayed on the visual output device., 'a processing device comprising a processor and a memory storing computer program code, wherein the processing device is operable to continually2. The apparatus of wherein processing the downhole rotational speed data comprises:calculating a highest rotational speed variation of the downhole rotational speed data encompassed within the time window; anddividing the highest rotational speed variation by a predetermined reference rotational speed.3. The apparatus of wherein calculating the highest rotational speed variation comprises:finding a ...

COMPACT DEVICE FOR DETECTING AT LEAST ONE ACCELERATION AND ONE SPEED OF ROTATION

A device for detecting an acceleration in one direction and a speed of rotation along one direction, including a support and two structures mechanically coupled to each other in opposite phase and suspended relative to the support, each of the structures including: an excitation mass; an excitation mechanism configured to move the excitation mass in a given direction; an inertial mass suspended to the excitation mass; a detector connected to the inertial mass to be displaced by same, and the detector connected to the support; a mechanism for detecting displacement of the inertial mass; and a controller controlling the excitation mechanism and processing signals delivered by the detecting mechanism. 127-. (canceled)28. A device for detecting an acceleration in at least one direction and a speed of rotation in at least one other direction , comprising: an excitation mass;', 'an excitation means configured to move the excitation mass in a given direction of excitation;', 'an inertial mass mechanically integral with the excitation mass;', 'a detecting element connected to the inertial mass to be displaced by the inertial mass, the detecting element being hinged to the support by a pivot hinge and connected to the inertial mass by elastic means;', 'a detector detecting displacement of the inertial mass in a given direction of detection; and', 'a unit for controlling the excitation means and processing signals delivered by the detector., 'a support and at least two structures mechanically coupled to each other in opposite phase, the structures being suspended relative to the support, each of the structures comprising29. The detecting device according to claim 28 , wherein the detecting element comprises a first portion and a second portion which are connected by a pivot connection claim 28 , the first portion being hinged to the support by the pivot connection and the second portion being connected to the inertial mass by the elastic means claim 28 , the pivot connection ...

DOWNHOLE SENSOR APPARATUS AND RELATED SYSTEMS, APPARATUS, AND METHODS

A downhole sensor apparatus may include a structure securing a circuit board. The structure may be configured to be inserted into a recess in a tool on a drill string. The downhole sensor apparatus may include one or more sensors coupled to the circuit board and a cap over the structure. The downhole sensor apparatus may further include a data port electrically coupled to the circuit board and configured to transmit data from the sensors to an external device. The downhole sensor apparatus may include a threaded element configured to thread into complementary threads in the recess in the tool. The downhole sensor apparatus may be configured to operate in an idle condition. The downhole sensor apparatus may compare readings from at least two sensors to threshold downhole conditions and begin normal operation when the readings from the at least two sensors meet or exceed the threshold downhole conditions. 1. A downhole sensor apparatus comprising:a structure carrying a circuit board, the structure configured to be inserted into a recess in a tool on a drill string;one or more sensors coupled to the circuit board;a cap over the structure;a data port disposed through the cap, the data port electrically coupled to the circuit board and configured to transmit data from the one or more sensors to an external device; anda securing element configured to engage a complementary feature in the recess in the tool, the securing element configured to secure the structure to the tool.2. The downhole sensor apparatus of claim 1 , wherein the cap comprises the securing element.3. The downhole sensor apparatus of claim 1 , wherein the cap comprises a ridge proximate a base of the cap.4. The downhole sensor apparatus of claim 3 , wherein the securing element comprises a locking ring separate from the structure and the cap claim 3 , wherein the locking ring is configured to contact the ridge of the cap and secure the cap and the structure to the tool.5. The downhole sensor apparatus of ...

METHOD FOR MOUNTING A SENSOR BEARING UNIT, AND SENSOR BEARING UNIT ADAPTED TO SUCH A METHOD

A method for mounting a sensor bearing unit providing a bearing and an impulse ring provided with a target holder and with a target mounted on an axial portion of the target holder. The method including measuring an eccentricity Ebetween the target and the axial portion of the target holder, measuring an eccentricity Ebetween a groove made in the bore of an inner ring of the bearing and the bore, introducing the target holder inside the groove, turning the target holder inside the groove to an angular position in which the eccentricity Ebetween the target and the bore of the inner ring is less than or equal to a predetermined value which is lower than the sum of the eccentricities Eand E, and securing the target holder inside the groove of the inner ring at the angular position. 1. A sensor bearing unit , comprising:an outer ring;an inner ring, when viewed in cross section, having a bore therethrough formed, in part, by a radially innermost axially extending inner ring surface, the inner ring and the outer ring being configured for relative rotation therebetween around a rotation axis;a plurality of rolling elements disposed between the outer ring and the inner ring; and a target; and', 'a target holder, when viewed in cross section, having a radially innermost axial target holder portion, the target being positioned on the target holder;, 'an impulse ring, comprisingwherein the inner ring, when viewed in cross section, further defines a cylindrical groove which extends radially outwardly from the radially innermost axially extending surface of the inner ring, the cylindrical groove having a greater diameter than a portion of the bore formed by the radially extending innermost axially extending surface, the cylindrical groove being configured for mounting the radially innermost axial target holding portion thereby fastening the impulse ring to the inner ring.2. The sensor bearing unit of claim 1 , wherein the target is mounted on an inner cylindrical surface of a ...

METHOD AND APPARATUS FOR DETERMINING A VALUE OF A VARIABLE PARAMETER

A control methodology and apparatus for an engine suitable for use in capacitor discharge ignition systems for internal combustion engines or brushless DC motors is provided, which make use of a simple logic block to determine for instance an ignition timing advance angle or duty cycle signal based on actual engine speed versus engine control parameter data stored in a table, which is a read-only memory, preferably configurable. To minimise memory space, a small number of values of engine control parameter versus engine speed are stored in the table and the logic block determines the required engine control signal for a measured value of engine speed by an interpolation process, preferably linear interpolation. 1. A method for determining an engine control parameter as a function of a variable parameter relating to an engine speed , the method comprising: providing in a table , a set of data points , each data point comprising a value of the variable parameter relating to engine speed and a value of the engine control parameter corresponding thereto in accordance with said function , receiving a measured value of the variable parameter relating to the engine speed , extracting from the table , two data points from the set of data points which are lower and upper to the measured value of the variable parameter relating to the engine speed , and determining a value of the engine control parameter by interpolating between the extracted two data points.2. The method of claim 1 , wherein interpolating between the extracted two data points is performed using linear interpolation claim 1 , wherein said extracted two data points are consecutive claim 1 , in particular the two extracted data points are closest lower and closest upper to the measured value of the variable parameter relating to the engine speed.3. The method of claim 1 , wherein the engine control parameter is an ignition timing advance angle of an internal combustion engine and the variable parameter is a ...

OMM ROTATION RATE SENSOR INCLUDING A DRIVE, WITHOUT STATIONARY ELECTRODES

A rotation rate sensor which includes a substrate, a first structure which is movable relative to the substrate and a second structure which is movable relative to the substrate and relative to the first structure. The first structure includes at least one first drive device and the second structure includes at least one second drive device. The first and second drive devices are situated for the joint deflection of the first structure from a neutral position of the first structure in parallel to a drive direction and of the second structure from a neutral position of the second structure in parallel to the drive direction, due to an interaction between the first and second drive devices in such a way that the first and second structures are excitable into an oscillation in phase opposition, in each case with a motion component in parallel to the drive direction. 2. The rotation rate sensor as recited in claim 1 , wherein the first structure includes a first frame structure claim 1 , the first frame structure extending in a first plane in parallel to the main plane of extension claim 1 , the first structure including a first detection structure claim 1 , which is at least partially enclosed by the first frame structure in the first plane claim 1 , for detecting an action of force on the first structure along a detection direction perpendicular to the drive direction due to a rotation rate of the rotation rate sensor about an axis perpendicular to the drive direction and perpendicular to the detection direction claim 1 , and the second structure including a second frame structure claim 1 , the second frame structure extending in the first plane claim 1 , the second structure including a second detection structure claim 1 , which is at least partially enclosed by the second frame structure in the first plane claim 1 , for detecting an action of force on the second structure along a detection direction perpendicular to the drive direction due to a rotation rate of the ...

Two-Wire Hall-Effect Sensor

An improved two-wire hall-effect speed sensor circuit includes two separate voltage regulation circuits. The voltage regulator circuits, hall plates, signal processing circuits, and output stage are implemented on an application specific integrated circuit (ASIC). In addition to a supply terminal and a return terminal, the ASIC includes an intermediate terminal. Both voltage regulation circuits may be aided by capacitors, one between the supply terminal and the return terminal, the other between the intermediate terminal and the return terminal. The speed sensor circuit is suitable for use with non-twisted wires, enabling use of a common supply wire for multiple sensors, thus reducing the number of terminals required on the controller and on connectors. 1. A two-wire hall-effect sensor comprising:a supply terminal;a return terminal;an intermediate terminal;a first voltage regulation circuit configured to regulate a voltage difference between the intermediate terminal and the return terminal to a first predetermined value when a voltage difference between the supply terminal and the return terminal exceeds the first predetermined value;a hall plate having a supply port, a return port electrically connected to the return terminal, and an output port;a second voltage regulation circuit configured to regulate a voltage difference between the hall plate supply port and the return terminal to a second predetermined value when a voltage difference between the intermediate terminal and the return terminal exceeds the second predetermined value; andsignal processing and output stage circuits configured to vary an electrical current from the supply terminal to the return terminal in response to changes in the voltage difference between the hall plate output port and the return terminal.2. The sensor of further comprising a first capacitor connected across the intermediate terminal and the return terminal.3. The sensor of further comprising a Zener diode connected across the ...

Pedal Assisted Bicycle And Method Of Controlling The Pedal Assisted Bicycle

A pedal assisted bicycle a first and a second wheel; a pedaling assembly mechanically decoupled from the first and second wheels by which an user can supply a pedaling power; an electric motor mechanically coupled to at least one of the wheels capable of taking a motor power; a generator device adapted to generate a generator device electric power from the pedaling power, arranged in an energy exchange relationship with the pedaling assembly and the electric motor; an energy storage device arranged in an energy exchange relationship with the electric motor and with the generator device; a control system including a module for controlling the power required to the generator device to be supplied to the electric motor and/or to the storage device; a heartbeat sensor adapted to generate a signal representing heartbeat. 122-. (canceled)23. A pedal assisted bicycle comprising:first and second wheels,a pedaling assembly mechanically decoupled from said first and second wheels, by which a user can supply a pedaling power,an electric motor mechanically coupled to at least one of said first and second wheels capable of taking a motor power,a generator device adapted to generate a generator device electric power from said pedaling power, arranged in an energy exchange relationship with the pedaling assembly and the electric motor,an energy storage device arranged in an energy exchange relationship with said electric motor and generator device,a control system comprising a module for controlling the power required to the generator device to be supplied to the electric motor and/or to the storage device, anda heartbeat sensor adapted to generate a signal representing the heartbeat,wherein said module for controlling the electric power required to the generator device is operatively connected to the heartbeat sensor and is configured in order to determine the electric power required to the generator device as a function of said signal representing the heartbeat.24. The pedal ...

Physical Quantity Sensor

To provide a physical quantity sensor in which the influence of deformation of a package substrate on the measuring accuracy of a sensor element can be suppressed. A physical quantity sensor includes a sensor element that detects a predetermined physical quantity and outputs an electrical signal, a plurality of lead portions that are connected to the sensor element, and a package substrate that accommodates the sensor element and the plurality of lead portions. The plurality of lead portions are connected at proximal end sides thereof to the package substrate side, and connected at distal end sides thereof to the sensor element side, and the plurality of lead portions support the sensor element in such a manner that the sensor element does not contact the package substrate and that the transmission of deformation of the package substrate side to the sensor element is suppressed. 1. A physical quantity sensor that measures a physical quantity , comprising:a sensor element, that detects a predetermined physical quantity and outputs an electrical signal;a plurality of lead portions that are connected to the sensor element; anda package substrate that accommodates the sensor element and the plurality of lead portions, whereinthe plurality of lead portions are connected at proximal end sides thereof to the package substrate side, and connected at distal end sides thereof to the sensor element side, andthe plurality of lead portions support the sensor element in such a manner that the sensor element does not contact the package substrate and that the transmission of deformation of the package substrate side to the sensor element is suppressed.2. The physical quantity sensor according to claim 1 , whereinthe package substrate has a hermetic structure, and a gas damper is formed in a gap between the sensor element and the package substrate due to a gas enclosed in the package substrate.3. The physical quantity sensor according to claim 2 , whereinthe plurality of lead ...

Bearing cover

A bearing cover (10) has a bearing receiving space (18) for a bearing (9) and has a fastening region (17) for fastening the bearing cover (10) to a housing body (7). The bearing receiving space (18) of the bearing cover (10) is decoupled electrically from the fastening region (17) of the bearing cover (10) to prevent an undesired flow of electric current across the bearing (9).

Magnetic encoder

To provide a magnetic encoder in which a base material has a ring-shaped body portion into which a rotation axis is inserted when a magnetic drum is mounted on a rotation axis, and an engagement convex portion provided so as to project over a whole circumference of an outer periphery of the body portion. The body portion has a centering track provided in a part of the outer periphery of the body portion over the whole circumference as a reference of circular runout tolerance on an outer periphery of a magnet. The engagement convex portion has a constricted portion projecting from the outer periphery of the body portion, and a cylindrical portion extending in an axial direction of the body portion from a tip end of the constricted portion. The magnet surrounds the engagement convex portion so as to wrap around to a gap between the cylindrical portion and the body portion, and exposes the centering track without covering the centering track.

Systems and Methods for Magnetic Field Sensors with Self-Test

Systems, methods, and apparatuses for magnetic field sensors with self-test include a detection circuit to detect speed and direction of a target. One or more circuits to test accuracy of the detected speed and direction may be included. One or more circuits to test accuracy of an oscillator may also be included. One or more circuits to test the accuracy of an analog-to-digital converter may also be included. Additionally, one or more IDDQ and/or built-in-self test (BIST) circuits may be included. 1. An apparatus comprising: one or more magnetic field sensing elements;', 'a first signal channel to output a first signal;', 'a second signal channel to output a second signal, wherein the first and second signals correspond to a position of the target in relation to the one or more magnetic field sensing elements;', 'an oscillator to provide an oscillating output; and', 'an analog-to-digital converter;, 'a detection circuit to detect speed and direction of a target, the detection circuit comprisinga first test circuit to determine if the apparatus is detecting speed and/or direction accurately, the first test circuit comprising a counter coupled to the signal channels such that the first signal channel increments the counter and the second signal channels decrements the counter, the first test circuit including circuitry to assert an error condition if a count of the counter exceeds a predetermined threshold;a second test circuit coupled to the oscillator to determine whether the oscillator is oscillating within a predetermined frequency range, the second test circuit comprising a ramp generator to generate a voltage ramp signal that decays over time and resets upon detection of an edge of the oscillating output, and a comparator circuit to determine whether a voltage level of the voltage ramp signal is between a predetermined voltage range upon detection of the edge of the oscillating output;a third test circuit coupled to the analog-to-digital converter to determine ...

IMPULSE RING AND A SENSOR-BEARING UNIT COMPRISING SUCH IMPULSE RING

An impulse ring centered on a central axis, for a sensor-bearing unit including a bearing is provided. The impulse ring includes a magnetized target that generates a magnetic fields adapted to be sensed by a sensor, and an annular target holder. The target holder provides an inner axial tubular portion adapted to be fixed to a rotatable inner ring of the bearing, an outer axial tubular portion holding the magnetized target that is positioned radially beyond an outer ring of bearing, and an intermediate portion that radially extends between the inner axial tubular portion and outer axial tubular portion. The intermediate portion provides a radial part, an inclined part and a plurality of stiffening ribs. 1. An impulse ring centered on a central axis , for a sensor-bearing unit including a bearing , the impulse ring comprising:a magnetized target that generates a magnetic fields adapted to be sensed by detection means, andan annular target holder having an inner fixing portion adapted to be fixed to a rotatable inner ring of bearing, an outer axial tubular portion centered on the central axis and holding the magnetized target is positioned radially beyond an outer ring of bearing, and an intermediate portion that substantially radially extends between the inner fixing portion and outer axial tubular portion, whereinthe intermediate portion includes:{'b': '52', 'a radial part outwardly extending from the inner fixing portion along a radial surface (P) that forms substantially a right angle with the central axis,'}{'b': '54', 'an inclined part outwardly extending between the radial part and outer axial tubular portion along a frustoconical surface (P) that is inclined with respect to the radial surface and is directed towards the outer ring of bearing, and'}a plurality of circumferentially spaced stiffening ribs, the ribs axially protruding and radially elongating from the radial part towards the inclined part.2. The impulse ring according to claim 1 , wherein the ribs ...

DEVICE FOR DETECTING WHEEL SPEED

A wheel speed detection device according to one aspect of the present disclosure is installable on a wheel bearing which comprises an outer ring and an inner ring coupled to a rotating shaft and relatively rotated relative to the outer ring about the rotating shaft. The wheel speed detection device comprises a first target concentrically coupled to the rotating shaft, a second target disposed along an outer circumference of the inner ring, a cap coupled to the outer ring to cover the first target and the second target, a first sensor disposed in the cap and configured to detect a variation in magnetic field of the first target due to a rotation of the rotating shaft, and a second sensor disposed in the cap and configured to detect a variation in magnetic pole of the second target due to a rotation of the inner ring. 1. A wheel speed detection device installable on a wheel bearing which comprises an outer ring and an inner ring coupled to a rotating shaft and relatively rotated relative to the outer ring about the rotating shaft , the wheel speed detection device comprising:a first target concentrically coupled to the rotating shaft;a second target disposed along an outer circumference of the inner ring;a cap coupled to the outer ring to cover the first target and the second target;a first sensor configured to detect a variation in magnetic field of the first target due to a rotation of the rotating shaft and disposed in the cap; anda second sensor configured to detect a variation in magnetic pole of the second target due to a rotation of the inner ring and disposed in the cap.2. The wheel speed detection device of claim 1 , wherein the first sensor generates information on a rotation angle of the rotating shaft on the basis of the variation in magnetic field of the first target.3. The wheel speed detection device of claim 1 , wherein the first sensor comprises a detector which is concentrically disposed with respect to the rotating shaft.4. The wheel speed detection ...

Wheel speed sensor having multiple sensing units and wheel bearing comprising same

A wheel speed sensor mounted on a wheel bearing to detect a rotational speed of a wheel is provided. The wheel speed sensor according to an embodiment of the present disclosure may comprise: a housing having a sensing module provided therein; a first sensing module configured to detect a rotational speed of the wheel and to output a first detection signal to an outside; and a second sensing module configured to detect a rotational speed of the wheel independently of the first sensing module and to output a second detection signal to the outside. According to an embodiment of the present disclosure, the first sensing module may comprise a first sensing part configured to detect a rotational speed of the wheel, and the second sensing module may comprise a second sensing part configured to detect a rotational speed of the wheel.

ENCODER WHEEL FOR WHEEL HUB ASSEMBLY

A speed measuring device for a wheel hub assembly equipped with a rolling bearing. The measuring device having an encoder wheel mounted on a rotating ring of the bearing, a mechanical support disposed between the encoder wheel and the ring to cause the encoder wheel and the ring to be angularly fixed to one another, and a mechanical lock for axially locking the encoder wheel in a seat formed by the mechanical lock together with the mechanical support. The encoder wheel is equipped with a base structure made of plastic material mounted in a seat. 1. A rotating speed measuring device for a hub of a vehicle wheel having a rolling bearing , the measuring device comprising:an encoder wheel made of magnetized material assembled on a rotating ring of the rolling bearing;mechanical supporting means, disposed between the encoder wheel and the rotating ring, whereinthe encoder wheel and the outer ring are angularly constrained each other, and in combination,mechanical blocking means that axially constrains the encoder wheel, whereinthe encoder wheel comprises a base structure made of plastic material that is mounted within a seat that is defined by the mechanical blocking means together with the mechanical supporting means.2. The rotating speed measuring device according to claim 1 , wherein the mechanical supporting means comprises a cylindrical bottom wall that is fixed in an axially adjustable fashion on the outer ring claim 1 , and whereinthe encoder wheel is made of elastic magnetized material, placed directly in contact with the cylindrical bottom wall and is angularly constrained to the cylindrical bottom wall.3. The rotating speed measuring device according to claim 1 , wherein the mechanical blocking means are combined with the mechanical supporting means to axially block the encoder wheel in the mechanical supporting means claim 1 , and whereinthey comprise two lateral flanges that are jointed to the cylindrical bottom wall,the two lateral flanges and the ...

ABSOLUTE SPEED DETECTOR

A system determines absolute speed of a moving object. In AM, time of flight data over a time period is processed to determine ranges between the system and the moving object. The system performs linear regression analysis on the collected ranges to calculate the radial velocity. The system measures angular swivel rate of the system to determine tangential velocity. From the radial velocity and tangential velocity, the absolute speed can be calculated by taking the square root of the addition of the square of the radial velocity and square of the tangential velocity. In MM, the system calculates object distance, i.e. distance in the direction of travel, by subtracting the square of a pre-determined perpendicular distance L, perpendicular to the direction of travel, from a square of line-of-sight distance R, and taking square root of the result. Absolute speed is determined by calculating the slope of modified linear regression curve-fit. 1. A system for determining absolute speed of a moving object , comprising:a storage resource;a processor communicatively coupled to the storage resource, wherein the processor executes application code instruction that are stored in the storage resource to cause the system to:process a plurality of time of flight data over a measurement time interval;determine a plurality of ranges between a location associated with the system and a location associated with the moving object for each time of flight data;determine a linear regression curve-fit on the plurality of time of flight data for the plurality of ranges between the location associated with the system and the location associated with the moving object over the measurement time interval;determine absolute speed; andcommunicate the absolute speed.2. The system of wherein the processor executes application code instruction to cause the system to:determine a radial velocity associated with the plurality of time of flight data over the measurement time interval from the slope of ...

ROTATION DETECTION APPARATUS

A rotation detection apparatus includes a plurality of detection elements each outputting a signal responding to a change in magnetic flux caused by a rotation of a rotor, and a sensor body including the plurality of detection elements. The plurality of detection elements output signals having mutually different phases with respect to peaks of waveforms corresponding to respective output signals. 1. A rotation detection apparatus comprising:a plurality of detection elements each outputting a signal responding to a change in magnetic flux caused by rotation of a rotor; anda sensor body including the plurality of detection elements, wherein:the plurality of detection elements output signals having mutually different phases with respect to peaks of waveforms corresponding to respective output signals.2. The rotation detection apparatus according to claim 1 , whereinthe rotor serves as a magnetizing rotor provided with a multipolar magnet formed in a circular shape in which magnets are magnetized with N poles and S poles alternating in a circumferential direction of which the center is defined as a rotational axis of the rotor;two detection elements are provided each having a detection portion;when one detection portion of the detection element is located at a boundary portion between the N pole and the S pole, the other detection portion of the detection element is located at a portion different from the boundary portion, when viewed in a rotational axis direction.3. The rotation detection apparatus according to claim 2 , whereinwhen each number of N poles and S poles is defined as n (n≥1), a position of the one detection portion on a circumference of a circle of which the center is the rotational axis is defined as 0 degree, and a round of the circumference is defined as 360 degrees, the other detection portion is disposed at a position of 180/n·m+90/n degrees, where 0≤m<2n.4. The rotation detection apparatus according to claim 3 , wherein the other detection portion ...

Electronic Device, Manufacturing Method For Electronic Device, Electronic Apparatus, And Vehicle

An electronic device includes a substrate, a functional element disposed on a principal plane of the substrate, a lid body, the functional element being housed in a space covered by the lid body and the substrate, the lid body including a recess at a side opposed to the functional element, an outer surface at the opposite side of the recess, a first hole section including an inclined surface and a bottom surface on the outer surface, and a second hole section piercing through the lid body between the recess and the bottom surface and having an inner wall surface, a joining section of the inclined surface and the bottom surface in the first hole section being a curved surface, the lid body containing silicon, and a sealing member that seals the first hole section communicating with the space. 1. An electronic device comprising:a substrate;a functional element disposed on one surface of the substrate;a lid body, the functional element being housed in a space covered by the lid body and the substrate, the lid body including a first surface at a side opposed to the functional element, a second surface at an opposite side of the first surface, a first hole section including an inclined surface and a bottom surface on the second surface, and a second hole section piercing through the lid body between the first surface and the bottom surface and having an inner wall surface, a joining section of the inclined surface and the bottom surface in the first hole section being a curved surface, the lid body containing silicon; anda sealing member that seals the first hole section communicating with the space.2. The electronic device according to claim 1 , wherein a curvature radius of the curved surface is 5 nm or more and 50 μm or less.3. The electronic device according to claim 1 , wherein a joining section of the inclined surface and the second surface is a curved surface.4. The electronic device according to claim 1 , wherein a joining section of the bottom surface and the ...

MAGNETIC ENCODER AND PRODUCTION METHOD THEREFOR

A magnetic encoder is a magnetic encoder including a core metal and a multipolar magnet provided on the core metal and having magnetic poles formed alternately in a circumferential direction. The core metal includes an inner diameter cylindrical portion, an upright plate portion extending from one end of the inner diameter cylindrical portion toward an outer diameter side, and an outer diameter cylindrical portion extending axially from an outer diameter side end of the upright plate portion; the multipolar magnet is integrally molded on an annular portion, of the core metal, extending over the upright plate portion and the outer diameter cylindrical portion, by insert-molding such that an end surface of the outer diameter cylindrical portion is embedded; and a gap between the core metal and the multipolar magnet is filled with a sealing agent. 1. A magnetic encoder comprising a core metal and a multipolar magnet provided on the core metal and having magnetic poles formed alternately in a circumferential direction , whereinthe core metal includes an inner diameter cylindrical portion, an upright plate portion extending from one end of the inner diameter cylindrical portion toward an outer diameter side, and an outer diameter cylindrical portion extending axially from an outer diameter side end of the upright plate portion, andthe multipolar magnet is integrally molded on an annular portion, made up of the upright plate portion and the outer diameter cylindrical portion of the core metal, by insert-molding such that an end surface of the outer diameter cylindrical portion is embedded, and a gap between the core metal and the multipolar magnet is filled with a sealing agent.2. The magnetic encoder as claimed in claim 1 , wherein the multipolar magnet is a plastic magnet in which a magnetic powder and a thermoplastic resin are mixed with each other.3. The magnetic encoder as claimed in claim 1 , wherein a magnetic powder is mixed in the multipolar magnet and the ...

METHOD AND DEVICE FOR PROCESSING A SIGNAL PRODUCED BY A SENSOR FOR DETECTING THE ROTATION OF A ROTATING TARGET

Disclosed is a method for processing a primary signal produced by a sensor detecting the rotation of a rotating target. The primary signal includes pulses having, for a given speed of rotation of the target, a first positive voltage level for rotation in a first determined direction or a second positive voltage level for the opposite direction. A first secondary signal is generated by comparing the primary signal to a first determined voltage threshold between the first and second voltages. A second secondary signal is generated by comparing the primary signal to a second determined voltage threshold between the second voltage level and zero. A determined delay is introduced in the second secondary signal. A determined time threshold is compared to the duration between an active edge of the second secondary signal and the last preceding active edge of the first secondary signal, indicating direction. 1. A method for processing a primary signal produced by a sensor for detecting the rotation of a rotating target of the voltage level type , said primary signal comprising pulses having , for a given speed of rotation of the target , a first positive voltage level when the target is turning in a first determined direction of rotation or a second positive voltage level , different from said first voltage level , when the target is turning in a second direction of rotation opposite said first direction of rotation , the method comprising:{'b': 1', '1, 'the generating of a first secondary signal (COMP) by comparing the primary signal to a first determined voltage threshold (TH) between the first voltage level and the second voltage level;'}{'b': 2', '2, 'the generating of a second secondary signal (COMP) by comparing the primary signal to a second determined voltage threshold (TH) between the second voltage level and zero voltage;'}the intentional introduction of a determined delay (τ) in the second secondary signal with respect to the first secondary signal; and{'b': 1', ...

Wheel speed detecting device, and ring to be detected

A pulsar ring which is a detection target ring includes an annular base wall having pickup holes and a plurality of ring attachment portions protruding from an outer peripheral edge portion of the base wall and being fixed, together with a disc attachment portion of a brake disc, to a wheel of a vehicle wheel assembly. Regions corresponding to positions between adjacent ring attachment portions in an inner peripheral edge portion of the base wall are bent to form reinforcing ribs.

ELECTRONIC DEVICE AND PACKAGE

A packaged electronic device is disclosed, comprising: a package, a die and a first bondwire. The package comprises a leadframe. The leadframe comprises a first conducting leadframe element and a second conducting leadframe element that are separate from each other. The die comprises a first bondpad. The first bondwire electrically connects the first bondpad to the first conducting leadframe element. The die mechanically couples the first and second leadframe elements together. 1. A packaged electronic device comprising:a package having a leadframe, the leadframe comprising a first and second conducting leadframe element that are separate from each other;a die, comprising a first bondpad; anda first bondwire electrically connecting the first bondpad to the first leadframe element;wherein the die mechanically couples the first and second leadframe elements together.2. The device of claim 1 , the die further comprising a second bondpad and the device comprising a second bondwire claim 1 , connecting the second bondpad to the second leadframe element.3. The device of claim 1 , wherein the die is coupled to the first and second leadframe elements by an adhesive layer.4. The device of claim 1 , wherein a connection between the first bondwire and the first bondpad and/or first leadframe element comprises a wedge bond.5. The device of claim 1 , further comprising an encapsulating element that fully encapsulates the die claim 1 , first bondpad and first bondwire claim 1 , and partially encapsulates the first and second leadframe elements claim 1 , so that the first and second leadframe elements protrude from the encapsulating element.6. The device of claim 5 , wherein the first and second leadframe elements each comprise elongate bodies extending away from the die in substantially the same direction.7. The device of claim 6 , wherein the first leadframe element comprises a first end that is proximate to the die claim 6 , and a second end that is remote from the first die ...

APPARATUS FOR SENSING ROTATING DEVICE

An apparatus for sensing a rotating body includes a cylindrical supporting member being connected to a rotating shaft, a unit to be detected including a first pattern portion provided in a first height region of the supporting member, and the first pattern portion including first patterns extended in a rotation direction of the rotating shaft and a second pattern portion provided in a second height region of the supporting member, extended in a rotation direction of the rotating shaft, and the second pattern portion including second patterns having an angle difference with the first patterns, and a sensor module including a first sensor disposed opposite to the first pattern portion and a second sensor disposed opposite to the second pattern portion, the first patterns and the second patterns are formed of a metallic material, and each of the first sensor and the second sensor includes a sensing coil. 1. An apparatus for sensing a rotating body , comprising:a supporting member having a cylindrical shape, and being connected to a rotating shaft;a unit to be detected comprising a first pattern portion provided in a first height region of the supporting member, and the first pattern portion comprising first patterns extended in a rotation direction of the rotating shaft and a second pattern portion provided in a second height region of the supporting member, extended in a rotation direction of the rotating shaft, and the second pattern portion comprising second patterns disposed to have an angle difference with the first patterns; anda sensor module comprising a first sensor disposed opposite to the first pattern portion and a second sensor disposed opposite to the second pattern portion, wherein the first patterns and the second patterns are formed of a metallic material, and each of the first sensor and the second sensor comprises a sensing coil.2. The apparatus for sensing a rotating body of claim 1 , wherein the supporting member is formed of plastic.3. The ...

METHOD AND APPARATUS FOR IMPLEMENTING DRIVE SIGNAL FOR DRIVING RESOLVER SENSOR

A method and apparatus for generating a drive signal for driving a resolver sensor are provided. The method and apparatus implement a drive signal to be input to a resolver sensor. The method and apparatus perform counting in association with an incoming square wave signal and implement a drive signal after confirming that a specific point corresponding to a preset condition of the incoming square wave signal arrives. 11. . A method of implementing a drive signal for driving a resolver sensor , the method comprising:receiving a square wave signal;starting counting at a time point corresponding to a specific point of the square wave signal; andwhen a next specific point corresponding to a preset condition of the square wave signal arrives, performing control for implementing the drive signal in line with the next specific point, initializing a count value to zero, and restarting counting.2. The method according to claim 1 , wherein the method further comprises:after performing the control, receiving the square wave signal; andstarting counting at the time point corresponding to the specific point of the square wave signal.3. The method according to claim 2 , wherein the specific point corresponds to a rising pulse or edge of the square wave signal and the next specific point corresponds to a following rising pulse or edge of the square wave signal.4. The method according to claim 2 , wherein a period from the specific point to the next specific point is coincident with one cycle of the square wave signal.5. The method according to claim 2 , wherein the method further comprises:increasing or decreasing the magnitude of the drive signal.6. The method according to claim 2 , wherein performing the control comprises:when the next specific point corresponding to the preset condition does not arrive within a predetermined period of time, stopping the control for implementing the drive signal.7. The method according to claim 2 , wherein the specific point corresponds to the ...

SADDLE-TYPE VEHICLE

A wheel speed sensor is provided between a front wheel and a front fork. The wheel speed sensor includes a sensor body to be supported by the front side of the front fork. A front fender includes a downward extending portion extending downward along the front side of the front fork. The downward extending portion covers the sensor body. As such, the influence of an arrangement of a sensor body on the design in a saddle-type vehicle provided with a wheel speed sensor between a front fork and a wheel is suppressed. 1. A saddle-type vehicle , comprising:a front fork rotatably supporting a wheel;a front fender covering an upper portion of said wheel;a brake caliper supported on a rear side of said front fork; anda wheel speed sensor provided between said wheel and said front fork,wherein said wheel speed sensor includes a sensor body supported on a front side of said front fork,wherein said front fender includes a downward extending portion extending downward along said front side of said front fork, andwherein said downward extending portion covers said sensor body.2. The saddle-type vehicle according to claim 1 , wherein said sensor body is disposed above an axle of said wheel.3. The saddle-type vehicle according to claim 1 , wherein said front fork includes a mounting portion for mounting said sensor body claim 1 , in the vicinity of an axle of said wheel.4. The saddle-type vehicle according to claim 2 , wherein said front fork includes a mounting portion for mounting said sensor body claim 2 , in the vicinity of said axle of said wheel.5. The saddle-type vehicle according to claim 1 , wherein said downward extending portion of said front fender extends downward so as to overlap an axle of said wheel claim 1 , in a vertical direction.6. The saddle-type vehicle according to claim 2 , wherein said downward extending portion of said front fender extends downward so as to overlap said axle of said wheel claim 2 , in a vertical direction.7. The saddle-type vehicle ...

Bearing Assembly And Rotary Electric Machine Comprising Such A Bearing

A bearing assembly for rotatively holding a shaft with respect to a support member and comprises: a bearing, with a rotatable ring and a fixed outer ring to be immobilized within a housing of said support member. An encoder washer is fast in rotation with the rotating ring. At least one sensor is adapted to detect at least one rotation parameter of the encoder washer and a sensor body holds this sensor. An annular flange is used for mounting said sensor body with respect to the fixed outer ring. The annular flange has a first skirt and a second skirt which define, between them and a bottom wall of the flange, an annular recess for accommodating at least a part of the sensor body. In mounted configuration of the bearing assembly, the first and second skirts extend respectively towards the rotatable and fixed rings. 1. A bearing assembly for rotatively holding a shaft with respect to a support member , said bearing assembly comprising:a bearing with a rotatable ring and a fixed ring to be immobilized within a housing of said support member,an encoder washer fast in rotation with the rotatable ring,at least one sensor adapted to detect at least one rotation parameter of the encoder washer,a sensor body for holding said sensor,an annular flange for mounting said sensor body with respect to said fixed outer ring, whereinsaid annular flange has a first skirt and a second skirt which define, between them and a bottom wall of said flange, an annular recess for accommodating at least a part of said sensor body and,in mounted configuration of said bearing assembly, said first and second skirts extend respectively towards said rotatable and fixed rings.2. The bearing assembly according to claim 1 , wherein it includes mounting means for immobilizing said flange on said support member.3. The bearing assembly according to claim 2 , wherein said mounting means include screws for mounting said flange on said support member.4. The bearing assembly according to claim 1 , wherein in ...

FLANGED WHEEL HUB BEARING PROVIDED WITH A SENSOR

A wheel hub bearing for motor vehicles including a rotatable hub provided with a flange for the engagement of the hub to a wheel of a vehicle and provided with a radially outer free portion and a bearing unit provided with a radially outer ring for the engagement of the wheel hub bearing to a knuckle of the vehicle and a radially inner rotatable ring angularly connected to the hub. Furthermore, the wheel hub bearing has a device for detecting a vehicle parameter and provided with an encoder and a sensor in communication with the encoder. The encoder is ridgidly coupled to the radially outer free portion of the flange to jointly rotate with the hub. 1. A wheel hub bearing for motor vehicles , the wheel hub bearing comprising:a rotatable hub provided with a flange for the engagement of the hub to a wheel of a vehicle, a radially outer free portion, and a bearing unit having a radially outer ring for the engagement of the wheel hub bearing to a knuckle of the vehicle and a radially inner rotatable ring angularly connected to the hub, anda device for detecting a vehicle parameter being provided, the device including an encoder and a sensor, the sensor being in communication with the encoder, whereinthe encoder is rigidly coupled to the radially outer free portion of the flange to jointly rotate with the hub.2. The wheel hub bearing according to claim 1 , wherein the encoder is mounted on the radially outer lateral surface of a protecting cap rigidly coupled to the flange claim 1 , so that the cap rotates with the same rotational speed of the hub.3. The wheel hub bearing according to claim 1 , wherein the device for detecting a vehicle parameter detects a rotational speed with a speed sensor.4. The wheel hub bearing according to claim 3 , wherein the value of a nominal reading diameter (D) of the speed sensor ranges between 130 mm to 150 mm.5. The wheel hub bearing according to claim 4 , wherein a number of poles pairs with inverse polarity accommodated on the encoder ...

POSTURE ESTIMATION METHOD, POSTURE ESTIMATION DEVICE, AND VEHICLE

A posture estimation method includes calculating a posture change amount of an object based on an output of an angular velocity sensor, predicting posture information of the object by using the posture change amount, adjusting error information in a manner of determining whether or not the output of the angular velocity sensor is within an effective range and, when it is determined that the output of the angular velocity sensor is not within the effective range, increasing a posture error component in error information and reducing a correlation component between the posture error component and an error component other than the posture error component in the error information, and correcting the predicted posture information of the object based on the error information. 1. A posture estimation method comprising:calculating a posture change amount of an object based on an output of an angular velocity sensor;predicting posture information of the object by using the posture change amount;adjusting error information in a manner of determining whether or not the output of the angular velocity sensor is within an effective range, and when it is determined that the output of the angular velocity sensor is not within the effective range, increasing a posture error component in error information and reducing a correlation component between the posture error component and an error component other than the posture error component in the error information; andcorrecting the predicted posture information of the object based on the error information.2. The posture estimation method according to claim 1 , wherein determining whether or not a current time is in a first period after it is determined that the output of the angular velocity sensor is not within the effective range,', 'increasing the posture error component in the first period, and', 'reducing the correlation component between the posture error component and the error component other than the posture error component, ...

METHOD FOR COMPENSATING GYROSCOPE DRIFT ON AN ELECTRONIC DEVICE

A method for compensating for gyroscope drift on an electronic device includes receiving by a data processing unit, measurement data from a gyroscope. The method includes computing, by the data processing unit, a compensation parameter by analyzing the measurement data received from the gyroscope with respect to variations in temperature of the gyroscope. The method includes compensating, by the data processing unit, the measurement data by correcting the measurement data with the computed compensation parameter. The compensation parameter is continuously validated to correct the measurement data with the compensation parameter. Further, the received measurement data is updated continuously based on the computed compensation parameter, independent of the gyroscope on the electronic device, thereby facilitating adaptive drift compensation. 1. A method for compensating for gyroscope drift on an electronic device , the method comprising:acquiring, by a gyroscope sensor, measurement data including at least one of an angular velocity or a rotation of the electronic device;computing, by at least one processor, a compensation parameter by analyzing the measurement data with respect to variations in temperature of the gyroscope sensor; andcompensating, by the at least one processor, the measurement data by correcting the measurement data based on the computed compensation parameter.2. The method of claim 1 , wherein the compensation parameter includes at least one of a static drift claim 1 , a dynamic drift claim 1 , and temperature drift.3. The method of claim 2 , wherein computing the compensation parameter comprises computing the static drift when the electronic device is static claim 2 , wherein the measurement data received from the gyroscope sensor is corrected by compensating for the static drift.4. The method of claim 2 , wherein computing the compensation parameter comprises computing the dynamic drift when the electronic device is in motion claim 2 , wherein the ...

Wheel bearing unit

Wheel bearing unit with a wheel hub, wherein the wheel hub has an integrally formed wheel flange on one end thereof and an inner ring that is rotatable together with the wheel hub, wherein the inner ring is fastened on the wheel hub through the use of a rolling rivet connection in order to pre-tension a row of rolling elements in relation to an outer ring, and with an encoder provided on the inner ring and extending radially towards the outer ring, and with a protective cover fixed on the outer ring in order to close and seal annular openings formed between the outer ring and the wheel hub, and wherein a cylindrical section of the protective cover is pressed in and wherein a bottom section extends inwardly from the cylindrical section in a radial direction in order to cover an inner-side end of the wheel hub, wherein the cylindrical section is joined with a substance bond to the outer ring and wherein the substance-bond connection is produced through the use of a hardening fluid and wherein the fluid is held in a filling reservoir provided between the cylindrical section and the outer ring.

IO MATCHING CURRENT MODULATED OUTPUT FOR SENSORS

A sensor system enables a direct communication from a current modulated two-wire sensor or a speed sensor module to a TTL or CMOS processor. A magnetic speed sensor provides a current modulated signal directly to an input/output (I/O) pin of the TTL or CMOS processor, which is able to read TTL or CMOS levels of I/O signals thereat. A current to voltage converter converts the current modulate signal to a voltage modulated signal as an I/O signal that is directly read by the TTL or CMOS processor without additional components or elements. 1. A sensor system , comprising:a memory unit configured to store a plurality of operating instructions;a processing component coupled to the memory unit, wherein the processing component is configured to execute logical operations corresponding to respective operating instructions, wherein the memory unit and the processing component are disposed on a CMOS integrated circuit (IC) or a TTL IC;a sensor located, external to the CMOS IC or the TTL IC and directly connected to an input/output (I/O) interface of the CMOS IC or the TTL IC, the sensor configured to provide a current modulated output signal that comprises sensor data to the CMOS IC or the TTL IC based on a physical property sensed by the sensor;a current to voltage converter, connected to the sensor and the processing component via a direct connection at a single contact node, the current to voltage converter comprising a load resistor configured to convert the current modulated output signal to an I/O voltage signal that comprises the sensor data, and provide the I/O voltage signal to the I/O interface of the CMOS IC or the TTL IC;wherein the processing component is further configured to process sensor data related to the physical property directly from the I/O voltage signal to generate an output.2. The sensor system of claim 1 , wherein the sensor coupled to the current to voltage converter component is further configured to provide the current modulated output signal to ...

Sensor Device for a Rolling Bearing and Rolling Bearing Arrangement Comprising Such a Sensor Device

Sensor devices for a rolling bearing and roller bearings including said sensors are disclosed. The sensor device may include at least one sensor configured to connect to one bearing race in a manner fixed against relative rotation. At least one signal transmitter may be configured to connect to the other of the bearing races in a manner fixed against relative rotation. The sensor device may further include an outer ring configured to be fastened on an end face of the outer race of the rolling bearing and an inner ring configured to be fastened on an end face of the inner race of the rolling bearing. The sensor and the signal transmitter may be arranged on mutually opposite lateral surfaces of the outer and inner rings. 1. A sensor device for a rolling bearing having an outer race and an inner race , which is rotatable relative to the outer race , wherein the sensor device comprises:at least one sensor configured to connect to one of the two bearing races in a manner fixed against relative rotation,at least one signal transmitter configured to connect to the other of the two bearing races in a manner fixed against relative rotation,wherein the sensor device further comprises an outer ring configured to be fastened on an end face of the outer race of the rolling bearing, and an inner ring configured to be fastened on an end face of the inner race of the rolling bearing, wherein the sensor and the signal transmitter are arranged on mutually opposite lateral surfaces of the outer and inner rings.2. The sensor device as claimed in claim 1 , wherein the sensor is arranged on a flexible circuit board fastened on the lateral surface of the outer or the inner ring.3. The sensor device as claimed in claim 2 , wherein the circuit board is fixed on the lateral surface by potting compound.4. The sensor device as claimed in claim 1 , wherein the outer ring is designed as an open ring.5. The sensor device as claimed in claim 1 , wherein said sensor device is configured to be ...

MICROMECHANICAL COMPONENT AND METHOD FOR PRODUCING A MICROMECHANICAL COMPONENT

A micromechanical component is provided having a substrate having a main plane of extension, a first electrode extending mainly along a first plane in planar fashion, a second electrode extending mainly along a second plane in planar fashion, and a third electrode extending mainly along a third plane in planar fashion, the first, second, and third plane being oriented essentially parallel to the main plane of extension and being situated one over the other at a distance from one another along a normal direction that is essentially perpendicular to the main plane of extension, the micromechanical component having a deflectable mass element, the mass element being capable of being deflected both essentially parallel and also essentially perpendicular to the main plane of extension, the second electrode being connected immovably to the mass element, the second electrode having, in a rest position, a first region of overlap with the first electrode along a projection direction essentially parallel to the normal direction, and having a second region of overlap with the third electrode along a projection direction parallel to the projection direction, the mass element extending in planar fashion mainly along the third plane, the mass element having a recess that extends completely through the mass element, extending in planar fashion along the third plane and parallel to the normal direction, the third electrode being situated at least partly in the recess. 1. A micromechanical component , comprising:a substrate having a main plane of extension;a first electrode extending mainly along a first plane in planar fashion;a second electrode extending mainly along a second plane in planar fashion;a third electrode extending mainly along a third plane in planar fashion, wherein the first, second, and third planes are oriented essentially parallel to the main plane of extension and are situated one over another at a distance from one another along a normal direction that is ...

METHOD TO MONITOR A THRUST LOAD ON A ROLLING BEARING AND MACHINERY EQUIPPED WITH A SYSTEM TO MONITOR SAID THRUST LOAD

A method to monitor a thrust load on a rolling bearing, obtaining a first parameter on the basis of at least a bearing cage rotation speed and of a first race rotation speed of a bearing, and subsequently obtaining a calculated thrust load on the basis of the first parameter and of the first race rotation speed. 1. A method to monitor a thrust load on a rolling bearing , comprising:a first step of obtaining a first parameter on the basis of at least a bearing cage rotation speed and of a first race rotation speed of a bearing, and subsequently a second step of obtaining a calculated thrust load on the basis of the first parameter and of the first race rotation speed.2. The method of claim 1 , wherein the first parameter is obtained by dividing the bearing cage rotation speed by the first race rotation speed.3. The method of claim 1 , wherein the first parameter is also obtained on the basis of a second race rotation speed of the bearing.4. The method of claim 1 , wherein after the second step a third step is performed claim 1 , where it is verified if the calculated thrust load is equal or above a first predetermined value claim 1 , and in this case a ninth step of generating an overload alarm is performed claim 1 , otherwise a fourth and/or a fifth step is performed.5. The method of claim 1 , wherein after the second step claim 1 , the fourth step is performed claim 1 , where it is verified if the first parameter falls within a first range and claim 1 , if the first parameter falls out the first range a sixth step is performed claim 1 , while if the first parameter falls inside the first range the first step step is performed again with new values of the bearing cage rotation speed and of the first race rotation speed.6. The method of claim 5 , wherein the sixth step comprises a phase of verifying if a variation of the first race rotation speed corresponds to a predicted variation at the calculated thrust load of the bearing cage rotation speed claim 5 , and in ...

Rotation rate sensor, method for manufacturing a rotation rate sensor

A rotation rate sensor including a substrate, a drive structure, which is movable with regard to the substrate, a detection structure, and a Coriolis structure, the drive structure, the Coriolis structure, and the detection structure being essentially situated in a layer, in that an additional layer is situated essentially in parallel to the layer above or underneath the layer, a mechanical connection between the Coriolis structure and the drive structure being established with a first spring component, the first spring component being configured as a part of the additional layer, and/or a mechanical connection between the detection structure and the substrate being established with a second spring component, the second spring component being configured as a part of the additional layer.

PHYSICAL QUANTITY SENSOR, COMPLEX SENSOR, INERTIAL MEASUREMENT UNIT, PORTABLE ELECTRONIC DEVICE, ELECTRONIC DEVICE, AND VEHICLE

A physical quantity sensor includes a sensor element, and a container (package) that stores the sensor element on a bottom plate (first base material). An outer edge of the container has a rectangular shape in a plan view. Lengths of each side of the rectangular shape are 2.0 mm or more and 7.0 mm or less, a thickness of the container is 0.50 mm or more and less than 1.85 mm, and when a thickness of the bottom plate is t, 0.4 mm≤t≤1.1 mm is satisfied. 1. A physical quantity sensor comprising:a sensor element; anda ceramic container in which the sensor element is stored,wherein an outer edge of the container has a rectangular shape in a plan view,wherein the sensor element is attached to a bottom plate of the container,wherein lengths of each side of the rectangular shape are 2.0 mm or more and 7.0 mm or less, wherein a thickness of the container is 0.50 mm or more and less than 1.85 mm, andwherein, when a thickness of the bottom plate is t, 0.4 mm≤t≤1.1 mm is satisfied.2. The physical quantity sensor according to claim 1 , 0.4 mm≤t≤0.9 mm is satisfied.3. The physical quantity sensor according to claim 2 , 0.4 mm≤t≤0.7 mm is satisfied.4. The physical quantity sensor according to claim 3 , 0.5 mm≤t≤0.7 mm is satisfied.5. The physical quantity sensor according to claim 1 ,wherein the lengths of each side are 3.0 mm or more and 5.0 mm or less.6. The physical quantity sensor according to claim 1 ,wherein the container includesan annular substrate stacked on the bottom plate so as to constitute a recessed portion in which the sensor element is stored.7. The physical quantity sensor according to claim 6 ,wherein a lid that seals an opening portion of the recessed portion is included.8. The physical quantity sensor according to claim 1 ,wherein the bottom plate is a multilayered substrate on which a plurality of substrates are stacked.9. The physical quantity sensor according to claim 8 ,wherein the number of stacked layers of the multilayered substrate is three.10. The ...

HIGH RESOLUTION BEARING SENSOR AND IC CHIP FOR MULTI-POLE PAIR MAGNETIC PULSE RING

A sensor for measuring a rotation speed of a magnetic encoder includes a first magnetic detector detecting a magnetic field induced from the magnetic encoder and outputting a strength value of the magnetic field as a first electrical signal, a second magnetic detector detecting the magnetic field induced from the magnetic encoder and outputting a strength value of the magnetic field as a second electrical signal, a first output signal generator for generating and outputting first rotation data including information indicating a rotation speed of a wheel based on the first electrical signal, and a second output signal generator configured to generate second rotation data including information indicating a rotation speed of the wheel based on the second electrical signal. The information indicating the rotation speed in the second rotation data may have a higher resolution than the information indicating the rotation speed in the first rotation data. 1. A measuring sensor for measuring a rotation speed and a rotation direction of a magnetic encoder in a vehicular wheel , the measuring sensor comprising:a first magnetic detector configured to detect a magnetic field induced from the magnetic encoder and output a strength value of the magnetic field as a first electrical signal;a second magnetic detector configured to detect the magnetic field induced from the magnetic encoder and output a strength value of the magnetic field as a second electrical signal;a first output signal generator configured to generate and output first rotation data including information indicating a rotation speed of the wheel on the basis of the first electrical signal; anda second output signal generator configured to generate second rotation data including information indicating a rotation speed of the wheel on the basis of the second electrical signal,wherein the information indicating the rotation speed of the wheel in the second rotation data has a resolution that is higher than that of ...

Circuits and Methods for Generating a Threshold Signal Used in a Motion Detector In Accordance With a Least Common Multiple of a Set of Possible Quantities of Features Upon a Target

A circuit to detect a movement of an object provides a threshold selection module or a peak identifier module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described. The circuit and method can be tailored to store values associated with a least common multiple of a set of possible quantities of detectable features on target objects. 1. A magnetic field sensor for detecting a movement of an object , wherein the object has a plurality of object features , wherein a quantity of the object features belongs to a set of possible quantities of object features , wherein the set has a least common multiple of possible quantities of object features , wherein the magnetic field sensor comprises:a magnetic field sensing element for generating a magnetic field signal responsive to the object features as they pass by the magnetic field sensing element, wherein the magnetic field signal comprises a plurality of magnetic field signal cycles, wherein each one of the plurality of magnetic field signal cycles is indicative of a respective one of the plurality of object features passing by the magnetic field sensing element, wherein the plurality of magnetic field signal cycles includes a present magnetic field signal cycle and a plurality of past magnetic field signal cycles; and a peak identifying circuit for identifying at least one of a plurality of positive peaks of the magnetic field signal or a plurality of negative peaks of the magnetic field signal to provide a peak signal indicative of the at least one of the plurality of positive peaks of the magnetic field signal or of the plurality of negative peak of the magnetic field signal;', 'a sample selection circuit module coupled to receive a peak-related signal related to the peak signal and configured to store a plurality of samples of ...

MEASUREMENT SYSTEM, AND A METHOD IN RELATION TO THE MEASUREMENT SYSTEM

A measurement system configured to determine an apparatus parameter related to a working procedure of an apparatus involving movements. The system includes a measurement unit including a sensor member configured to measure accelerations and generate a sensor signal in dependence thereto, and to apply the signal(s) to a processing unit. The measurement unit is configured to be arranged at the apparatus such that the measurement unit, during a measurement procedure, is repetitively moved in a loop, displaying a loop trajectory, in both forward and backward directions along the loop trajectory, and to perform measurements of accelerations during the measurement procedure. The processing unit is configured to determine an apparatus parameter of working procedure movements which are indicated in the measured accelerations, and only based upon the measured accelerations, and configured to calculate a measure of the apparatus parameter only based upon one or many parameters of the accelerations. 1. A measurement system configured to determine at least one apparatus parameter related to a working procedure of an apparatus involving movements , the system comprises a processing unit and at least one measurement unit configured to be arranged at said apparatus and to measure movements related to the working procedure , said at least one measurement unit comprises at least one sensor member configured to measure at least accelerations , and to generate at least one sensor signal in dependence thereto , and to apply said signal(s) to said processing unit ,characterized in that said at least one measurement unit is configured to be arranged at said apparatus such that the at least one measurement unit, during a measurement procedure, is repetitively moved in a loop, displaying a loop trajectory, in both forward and backward directions along the loop trajectory, and to perform measurements of at least accelerations during said measurement procedure, wherein said processing unit ...

Inertial Sensor Unit, Electronic Apparatus, And Vehicle

An inertial sensor unit includes a first inertial sensor and a second inertial sensor. The first inertial sensor has a first acceleration sensor element configured to detect an acceleration in a direction along the first axis, and a second acceleration sensor element configured to detect an acceleration in a direction along the second axis. The second inertial sensor has a third acceleration sensor element configured to detect an acceleration in a direction along the third axis, and a fourth acceleration sensor element configured to detect an acceleration in a direction along the first axis. The first acceleration sensor element, the second acceleration sensor element, the third acceleration sensor element, and the fourth acceleration sensor element have comb-tooth shaped detection electrodes.

SYSTEMS AND METHODS FOR ESTIMATING ERRORS IN GYROSCOPE SENSORS

Embodiments of the present disclosure provide systems and methods that establish non-linear components of gyroscope errors which have not been studied or explored earlier. These errors include but are not limited to non-linear dynamic error which is a function of the angular velocity itself. Bias instability has been observed within the same environment of temperature and atmospheric pressure. In other words, the embodiments of the present disclosure analyse and models static bias errors and dynamic non-linear errors in the gyroscope sensor which may be used to model and correct errors accordingly In subsequent measurements. The system provide solution(s) when there is no way of directly estimating temperature for bias correction of gyroscope, by estimating a temperature change by considering indirect measurements from other sensors present onboard the device. 1. A processor implemented method for estimating errors in a gyroscope sensor , the method comprising:{'b': '202', 'obtaining (), a first gyroscopic data and one or more temperature readings, wherein the first gyroscopic data is obtained from a gyroscopic sensor based on a first state of a device associated with the gyroscopic sensor, and wherein the one or more temperature readings are obtained from an onboard sensor;'}{'b': '204', 'dividing (), the first gyroscopic data into a first set of windows, wherein each window from the first set comprises a specific time period that includes at least a unique subset of the gyroscopic data;'}{'b': '206', 'calculating (), a bias for each window from the first set of windows based on a corresponding unique subset of the first gyroscopic data, and a corresponding temperature reading; and'}{'b': '208', 'generating () a temperature dependent model for the gyroscopic sensor based on the calculated bias for each window from the first set of windows and the corresponding temperature reading.'}2. The processor implemented method of claim 1 , further comprisingobtaining a ...

Operation parameter detecting apparatus for vehicle

The original abstract is amended to “An operation parameter detecting apparatus for a vehicle is provided to obtain a pedaling torque value, an angle of a central shaft with a magnetic ring, a corresponded rotating speed and a corresponded pedaling power, respectively by measuring an electromagnetic force of a coil induced by a magnetic variation due to a deformation of a covered magnetic sleeve linked to a central shaft, a voltage output from at least a Hall corresponded to a magnetic flux density of which the distribution in a 1, 2 or 3 dimensional space is partly a monotonic increasing or decreasing function in an area with the same polarity, and at calculation relative to the time.”

APPARATUS FOR MEASURING SPEED OF VEHICLE HAVING IN-WHEEL MOTOR

An apparatus for measuring a speed of a vehicle having an in-wheel motor includes a lock nut part fixed to an outer portion of a rotation shaft rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft; a connection part coupled to the lock nut part; a magnet part having a magnetic force, and fixed to the connection part; and a speed sensor part installed to be separated from the magnet part, and measuring rotations of the magnet part. 1. An apparatus for measuring a speed of a vehicle having an in-wheel motor , comprising:a lock nut part fixed to an outer portion of a rotation shaft configured to be rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft;a connection part coupled to the lock nut part;a magnet part having a magnetic force, and fixed to the connection part; anda speed sensor part installed to be separated from the magnet part, and configured for measuring rotations of the magnet part.2. The apparatus according to claim 1 , wherein the connection part has a ring shape which surrounds an outside of the lock nut part claim 1 , and is configured to be coupled to the lock nut part by press fitting.3. The apparatus according to claim 2 , wherein the connection part is configured to be coupled to the lock nut part after the connection part and the magnet part are coupled first.4. The apparatus according to claim 3 , wherein the magnet part is formed by sintering powder having a magnetic force claim 3 , and is bonded to the connection part.5. An apparatus for measuring a speed of a vehicle having an in-wheel motor claim 3 , comprising:a lock nut part fixed to an outer portion of a rotation shaft configured to be rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft;a magnet part having a magnetic force, and fixed to the lock nut part; ...

WHEEL ASSEMBLY WITH SENSOR FOR MEASURING WHEEL MOVEMENT

A wheel assembly including a sensor for measuring wheel movement is provided comprising: a frame member; an axle fixed to the frame member; a wheel rotatably mounted to the axle and comprising wheel recess; a code ring located within the wheel recess for rotation with the wheel; and a sensor device coupled to the frame member and located adjacent to the code ring. The sensor device senses movement of the code ring and generates an output signal indicative of the wheel movement. A materials handling vehicle comprising the wheel assembly is also provided. 1. A wheel assembly including a sensor for measuring wheel movement , the wheel assembly comprising:a frame member;an axle fixed to the frame member;a wheel rotatably mounted to the axle, wherein the wheel comprises a wheel recess;a code ring located within the wheel recess for rotation with the wheel; and the frame member comprises opposing axle plates for supporting the axle, each of the opposing axle plates comprising a bore for receiving the axle;', 'one of the opposing axle plates comprises a further bore extending through a thickness of the one axle plate, the sensor device being coupled to the one axle plate; and', 'a portion of the sensor device extends at least partially through the further bore such that an outermost surface of the portion of the sensor device is flush with an inner surface of the one axle plate or recessed with respect to the inner surface of the one axle plate., 'a sensor device coupled to the frame member and located adjacent to the code ring, wherein the sensor device senses movement of the code ring and generates an output signal indicative of the wheel movement, and wherein2. The wheel assembly as set out in claim 1 , wherein the code ring comprises a ring magnetized with alternating north and south poles around a perimeter of the ring.3. The wheel assembly as set out in claim 2 , wherein the sensor device comprises at least one Hall-effect sensor for sensing the alternating north and ...

APPARATUS AND METHOD FOR COMPENSATING FOR POSITION ERROR OF RESOLVER

An apparatus for compensating for a position error of a resolver has a controller which is configured to: receive position information of a rotor of a motor, which is detected by the resolver, to measure a first position error, convert the first position error to a second position error at an electrical angular velocity of 0, and to store the second position error; receive a current electrical angular velocity and the second position error, convert the second position error to a third position error at the current electrical angular velocity, and compensate for the third position error; and perform determination of false position error compensation when a magnitude of a ripple at an electrical angular velocity, which is measured after the third position error has been compensated for, is equal to or greater than a reference magnitude. 1. An apparatus for compensating for a position error of a resolver , the apparatus comprising a controller which is configured to:receive position information of a rotor of a motor, which is detected by the resolver, to measure a first position error, convert the first position error to a second position error at an electrical angular velocity of 0, and to store the second position error;receive a current electrical angular velocity and the second position error, convert the second position error to a third position error at the current electrical angular velocity, and compensate for the third position error; andperform determination of false position error compensation when a magnitude of a ripple at an electrical angular velocity, which is measured after the third position error has been compensated for, is equal to or greater than a reference magnitude.2. The apparatus of claim 1 , wherein the controller is further configured to:receive the position information of the rotor of the motor, which is detected by the resolver, to measure a fourth position error;determine an electrical angular velocity of the fourth position error; ...

DEVICE AND METHOD FOR MONITORING A DEVICE WITH A SLIDING BEARING DEVICE

A device for monitoring a device with a sliding bearing device with a static element for an element movable in a rotatory manner relative to the static element. The movable element has a device for generating a magnetic field and the static element has at a sensor device for detecting the magnetic field, in particular a time-varying magnetic field, wherein data of the magnetic field that is detected, in particular in a contact-free manner, by the sensor device can be transmitted to a data processing device, and a statistic for a spatial arrangement of the static element relative to the movable element can be determined with the data processing device based on the detected data. The invention includes a method for monitoring the device with the sliding bearing device. 1. A device for monitoring a device with at least one sliding bearing device with at least one static element for at least one element that is movable in a rotatory manner relative to the at least one static element ,whereinthe at least one movable element has at least one device for generating a magnetic field and the at least one static element has at least one sensor device for detecting the magnetic field, in particular a time-varying magnetic field, wherein data of the magnetic field detected by the sensor device in particular in a contact-free manner can be transmitted to a data processing device during operation of the at least one device and at least one statistic for a spatial arrangement of the at least one static element relative to the at least one movable element can be determined with the data processing device based on the detected data.2. The device according to claim 1 , wherein the spatial arrangement between the at least one static element and the at least one movable element is characterized bya clearance between the at least one static element and the at least one movable element,a measure for the alignment, in particular the axial alignment, the radial orientation and/or the ...

Physical Quantity Sensor, Inertial Measurement Unit, And Method For Manufacturing Physical Quantity Sensor

Provided is a physical quantity sensor including: a movable body; a base body; and a lid body, in which the movable body is accommodated in a space between the base body and the lid body, the space is sealed with a melt portion obtained by melting a through hole provided in the lid body, the lid body and the melt portion contain silicon, and the melt portion has a continuous curved surface having unevenness. 1. A physical quantity sensor comprising:a movable body;a base body; anda lid body, whereinthe movable body is accommodated in a space between the base body and the lid body,the space is sealed with a melt portion obtained by melting a through hole provided in the lid body,the lid body and the melt portion contain silicon, andthe melt portion has a continuous curved surface having unevenness.2. The physical quantity sensor according to claim 1 ,whereinthe lid body is a single crystal, andthe melt portion is a polycrystalline.3. An inertial measurement unit comprising:{'claim-ref': [{'@idref': 'CLM-00001', 'claim 1'}, {'@idref': 'CLM-00002', '2'}], 'the physical quantity sensor according to or .'}4. A method for manufacturing a physical quantity sensor claim 1 , comprising:forming a through hole and a recess portion in a lid body containing silicon;configuring a movable body to be accommodated in a space between the lid body and the base body; andirradiating the through hole and the recess portion with laser light to melt the through hole and the recess portion and seal the space.5. The method for manufacturing a physical quantity sensor according to claim 4 , whereinwhen the laser light is radiated, the physical quantity sensor is in a reduced-pressure atmosphere in a chamber including a transparent window portion, and the lid body is heated via the base body. The present application is based on, and claims priority from JP Application Serial Number 2020-154423, filed Sep. 15, 2020, the disclosure of which is hereby incorporated by reference herein in its ...

Physical Quantity Sensor, Physical Quantity Sensor Device, Electronic Device, And Mobile Body

A physical quantity sensor includes a substrate, a fixed member fixed to the substrate, a movable member displaceable in a first direction with respect to the fixed member, a movable electrode assembly provided in the movable member, a fixed electrode assembly fixed to the substrate and opposing the movable electrode assembly in the first direction, and a restrictor configured to restrict a movable range of the movable member in the first direction. The movable member includes a first outer edge disposed on one side in the first direction and a second outer edge disposed on the other side. The restrictor includes at least one of a first restrictor facing the first outer edge across a gap and a second restrictor facing the second outer edge across another gap. 1. A physical quantity sensor comprising:a substrate;a fixed member fixed to the substrate;a movable member displaceable in a first direction with respect to the fixed member;a movable electrode assembly provided in the movable member;a fixed electrode assembly fixed to the substrate and opposing the movable electrode assembly in the first direction; anda restrictor configured to restrict a movable range of the movable member in the first direction, wherein a first outer edge on a first side in the first direction and extending along a second direction orthogonal to the first direction; and', 'a second outer edge on a second side in the first direction and extending along the second direction, and, 'the movable member includes a first restrictor facing the first outer edge across a first gap; and', 'a second restrictor facing the second outer edge across a second gap., 'the restrictor includes at least one of2. The physical quantity sensor according to claim 1 , whereinthe first restrictor extends along an entirety of an outer extent of the first outer edge, andthe second restrictor extends along an entirety of an outer extent of the second outer edge.3. The physical quantity sensor according to claim 1 , ...

PHYSICAL QUANTITY SENSOR, COMPLEX SENSOR, INERTIAL MEASUREMENT UNIT, PORTABLE ELECTRONIC DEVICE, ELECTRONIC DEVICE, AND VEHICLE

A physical quantity sensor includes a sensor element (acceleration sensor element) and a substrate (package) to which the sensor element is attached using a bonding material (resin adhesive), in which, when an elastic modulus of the bonding material is e, 2.0 GPa Подробнее

Wheel speed sensor

A wheel speed sensor is provided that makes it possible to suppress unnecessary deformation when crimping a cover. A wheel speed sensor has a sensor head in which a sensor is accommodated, and a tube-shaped metallic cover that covers a portion of the sensor head and protects the sensor head. The cover has multiple protruding pieces on an opening portion, and is fixed against the sensor head by the protruding pieces being crimped toward the sensor head.

DETERMINING ROTATIONAL SPEED OR DIRECTION OF A BODY

A device for use in determining the rotational speed of a body. The device includes a sensor for detecting the strength of a magnetic field, and a body that is rotatable relative to the sensor about an axis. The body includes circumferentially spaced magnetic regions. The device is arranged so that, during rotation of the body relative to the sensor, the maximum strength detectable by the sensor of a first magnetic field of a first of the magnetic regions is different to the maximum strength detectable by the sensor of a second magnetic field of a second of the magnetic regions. 1. A device for use in determining the rotational speed of a body , the device comprising:a sensor configured to detect a strength of a magnetic field; anda body that is rotatable relative to the sensor about an axis, the body comprising a plurality of circumferentially spaced magnetic regions;wherein the device is arranged so that during rotation of the body relative to the sensor the maximum strength detectable by the sensor of a first magnetic field of a first of the magnetic regions is different to a maximum strength detectable by the sensor of a second magnetic field of a second of the magnetic regions.2. The device of claim 1 , wherein a magnetic field strength of the second magnetic region is greater than the magnetic field strength of the first magnetic region.3. The device of claim 1 , wherein the device is arranged so that the maximum strength detectable by the sensor of a third magnetic field of a third of the magnetic regions is different to each of the maximum strengths detectable by the sensor of the first and second magnetic fields.4. The device of claim 3 , wherein the magnetic field strength of the second magnetic region is greater than the magnetic field strength of the first magnetic region claim 3 , and wherein the magnetic field strength of the third magnetic region is greater than the magnetic field strength of the second magnetic region.5. The device of claim 3 , ...

Sensor assembly for a sliding camshaft of a motor vehicle

A sensor assembly for a sliding camshaft of a motor vehicle is provided. The sliding camshaft includes a base shaft that extends along a longitudinal axis and rotates about the longitudinal axis. The sliding camshaft further includes lobe banks rotationally fixed to the base shaft. Each lobe bank is axially movable between first and second positions relative to the base shaft. The sensor assembly includes a detection element rotationally fixed relative to the base shaft and axially movable between first and second positions relative to the base shaft. The sensor assembly further includes a sensor operably coupled to the detection element and configured to generate a signal indicative of an axial position of the detection element relative to the base shaft and at least one of an angular speed of the base shaft and an angular position of the base shaft about the longitudinal axis.

ELECTRONIC DEVICE

An electronic device includes: a substrate having an upper surface and a lower surface; a first electronic component mounted on the upper surface of the substrate; a second electronic component mounted on the lower surface of the substrate; and a mold portion covering the second electronic component without covering the first electronic component. The first electronic component is bonded to the upper surface on the first relative surface via a conductive first bonding member. The second electronic component is bonded to the lower surface via a second bonding member on a second relative surface relative to the lower surface. 1. An electronic device comprising:a substrate having a first surface and a second surface that are in a front and back relationship with each other, a first wiring pattern being disposed on the first surface, and a second wiring pattern being disposed on the second surface;a first electronic component mounted on the first surface of the substrate;a second electronic component mounted on the second surface of the substrate; anda mold portion that covers the second electronic component without covering the first electronic component, whereinthe first electronic component includes a first mounting terminal disposed on a first relative surface relative to the first surface, and is bonded to the first surface on the first relative surface via a conductive first bonding member, and the first mounting terminal and the first wiring pattern are electrically coupled to each other via the first bonding member, andthe second electronic component includes a second mounting terminal, and is bonded to the second surface via a second bonding member on a second relative surface relative to the second surface, and the second mounting terminal and the second wiring pattern are electrically coupled to each other via a conductive wire.2. An electronic device comprising:a substrate having a first surface and a second surface that are in a front and back relationship ...

BEARING DEVICE FOR VEHICLE WHEEL

This bearing device for a vehicle wheel is provided with: a magnetic encoder provided to an inner-side end of an inner race , which is an inward member; a cover for covering an inner-side opening B of an outer race , which is an outward member, the cover having opened therein a sensor attachment hole H in which an opening A and a thin-walled bottom B are formed; and a magnetic sensor disposed facing the magnetic encoder across the bottom B, the magnetic sensor being inserted into the sensor attachment hole H in the cover through the opening A. The bottom B in the sensor attachment hole H is formed in such a shape as to bulge toward the inner side. 1. A bearing device for a vehicle wheel ,the bearing device comprising:an outer member having, on its inner circumference, double-row outer raceway surfaces integrally formed on the outer member; a wheel hub having, on its one end, a vehicle wheel-mounting flange to which a vehicle wheel is mounted, the vehicle wheel-mounting flange being integrally formed on the wheel hub, and having, on its outer circumference, a cylindrical portion extending axially, and', 'at least one inner ring press-fit on the cylindrical portion of the wheel hub,, 'an inner member including'}the inner member having, on its outer circumference, double-row inner raceway surfaces facing the double-row outer raceway surfaces;double-row rolling elements rollably accommodated between the double-row inner raceway surfaces of the inner member and the double-row outer raceway surfaces of the outer member, respectively;a magnetic encoder disposed on an inner-side end of the inner member;a cover having a sensor mounting bore having, on an inner side of the sensor mounting bore, an opening and, on an outer side of the sensor mounting bore, a bottom that is thin,the cover being configured to cover an inner-side opening of the outer member; anda magnetic sensor inserted into the sensor mounting bore in the cover through the opening of the sensor mounting bore, ...

System and Method for Measuring Speed, Spin Rate, and Accuracy of a Sporting Device

A system and method for measuring motion properties of a movable object, such as a sporting device, wherein the movable object has an embedded magnetized unit creating a magnetic field. A measurement device, having a first magnetic field sensor positioned a known distance away from a second magnetic field sensor, is positioned in the vicinity of the movable object's trajectory, whereby the first and second magnetic field sensors output signals when the movable object passes within their respective proximities. A control module, that is responsive to the output signals created by the magnetic field sensors, is configured to record the times of output signal events. The control module is further configured to calculate motion properties, such as the speed and rate of spin, of the movable object based upon the recorded times of various sensor output events and the known distance between the first and second magnetic field sensors. 1. A system for measuring the spin rate of a magnetized sporting device traveling along a trajectory , comprising:a first magnetic field sensor being capable of providing a first output signal in response to changes in the magnetic field proximate to said first magnetic field sensor, whereby said first magnetic field sensor may provide said first output signal in response to a change in the magnetic field proximate to said first magnetic field sensor created by said magnetized sporting device traveling along a trajectory proximate to said first magnetic field sensor; and,a control module in communication with said first magnetic field sensor, wherein said control module is responsive to said first output signal provided by said first magnetic field sensor, wherein said control module comprises a timer, wherein said control module is configured to record time readings from said timer, and is further configured to determine the interval between subsequent time readings, wherein said control module is further configuredto monitor said first ...

ASSEMBLY AND METHOD OF COMPONENT MONITORING

A method of component monitoring for machinery having multiple rotating elements, which are rotated at different rotational speeds, the method including sampling data from the vibration sensor at a sampling frequency at least as great as the fastest rotational speed of the multiple rotating elements to form a data set and determining an actual rotational frequency for at least some of the rotating elements during the sampling of the data. 1. A method of component monitoring for machinery having multiple rotating elements , which are rotated at different rotational speeds , and at least one vibration sensor , the method comprising:sampling data from the vibration sensor at a sampling rate sufficient to monitor a fastest rotational speed of the multiple rotating elements to form a data set;determining an actual rotational frequency for at least some of the multiple rotating elements during the sampling of the data; andgenerating a virtual vibration waveform from the data set for at least some of the multiple rotating elements by filtering the data set to a sampling rate to monitor each of the at least some of the multiple rotating elements.2. The method of claim 1 , wherein determining the actual rotational frequency for the at least some of the multiple rotating elements comprises determining the actual rotational frequency of more than one of the multiple rotating elements.3. The method of claim 1 , wherein virtual vibration waveforms are generated for all of the multiple rotating elements.4. The method of claim 1 , further comprising processing the virtual waveform for each of the at least some of the multiple rotating elements to determine a health of the machinery.5. The method of claim 4 , wherein the processing comprises detecting claim 4 , by a processor claim 4 , a mechanical fault based on a determined vibration of at least one rotating component.6. The method of claim 5 , further comprising providing an alert to a user when a mechanical fault is detected.7. ...

Tachometer profile generation during idle revving events

Methods and systems are provided for generating a predictive tachometer profile at a tachometer of a vehicle. An engine speed offset can be generated based on a commended engine torque and engine inertia. A predictive tachometer profile displayed at the tachometer can then be generated based on the engine speed offset and a previous predictive tachometer profile.

Inertial Measurement Unit

An inertial measurement unit includes: a sensor unit having an inertial sensor; and a first holding unit holding the sensor unit. The first holding unit includes: a first substrate; a second substrate; a plurality of spacers coupling the sensor unit and the first substrate; a first elastic member and a second elastic member provided on both sides of the first substrate via opening parts; a first fixing member penetrating, pressing and fixing the first substrate and the first elastic member to the second substrate; and a second fixing member penetrating, pressing and fixing the first substrate and the second elastic member to the second substrate. 1. An inertial measurement unit comprising:a sensor unit having an inertial sensor; anda first holding unit holding the sensor unit, a first substrate having a plurality of opening parts and arranged opposite the sensor unit;', 'a second substrate arranged opposite the first substrate;', 'a plurality of spacers located at an outermost periphery of the first substrate and coupling the sensor unit and the first substrate together;', 'a first elastic member and a second elastic member provided on both sides of the first substrate via the opening parts;', 'a first fixing member penetrating, pressing and fixing the first substrate and the first elastic member to the second substrate; and', 'a second fixing member penetrating, pressing and fixing the first substrate and the second elastic member to the second substrate,, 'the first holding unit comprisingthe first elastic member and the second elastic member each having a first part arranged between the sensor unit and the first substrate, a second part opposite the first part and in contact with the second substrate, and a third part coupled to the second part and located inside the opening parts.2. The inertial measurement unit according to claim 1 , whereinthe first substrate and the second substrate have a modulus of elasticity that is lower than a modulus of elasticity of ...

System and Method for Measuring Speed, Spin Rate, and Accuracy of a Sporting Device

A system and method for measuring motion properties of a movable object, such as a sporting device, wherein the movable object has an embedded magnetized unit creating a magnetic field. A measurement device, having a first magnetic field sensor positioned a known distance away from a second magnetic field sensor, is positioned in the vicinity of the movable object's trajectory, whereby the first and second magnetic field sensors output signals when the movable object passes within their respective proximities. A control module, that is responsive to the output signals created by the magnetic field sensors, is configured to record the times of output signal events. The control module is further configured to calculate motion properties, such as the speed and rate of spin, of the movable object based upon the recorded times of various sensor output events and the known distance between the first and second magnetic field sensors. 1. A system for measuring the speed of a magnetized sporting device traveling along a trajectory , comprising:a first magnetic field sensor being capable of providing a first output signal in response to changes in the magnetic field proximate to said first magnetic field sensor, whereby said first magnetic field sensor may provide said first output signal in response to a change in the magnetic field proximate to said first magnetic field sensor created by said magnetized sporting device traveling along a trajectory proximate to said first magnetic field sensor;a second magnetic field sensor positioned a known distance away from said first magnetic field sensor, wherein said second magnetic field sensor is capable of providing a second output signal in response to changes in the magnetic field proximate to said second magnetic field sensor, whereby said second magnetic field sensor may provide said second output signal in response to a change in the magnetic field proximate to said second magnetic field sensor created by said magnetized ...

ENERGY BASED PARK BRAKE END OF LIFE DETECTION SYSTEM AND METHOD

A vehicle including a shaft, a park brake connected to the shaft and configured to retard a rotation of the shaft, and a park brake prognosis system associated with the shaft and the park brake. The park brake prognosis system includes a controller that is configured to calculate a status of the park brake dependent on a park brake energy of at least one engagement of the park brake and a first sensor operably coupled to the controller and the shaft. The first sensor is configured to provide a speed of the shaft. The park brake prognosis system also includes a second sensor operably coupled to the controller and the shaft. The second sensor is configured to provide an instantaneous torque of the shaft. 1. A vehicle , comprising:a shaft;a park brake connected to the shaft and configured to retard a rotation of the shaft; and a controller configured to calculate a status of said park brake dependent on a park brake energy of at least one engagement of said park brake;', 'a first sensor operably coupled to the controller and the shaft, said first sensor configured to provide a speed of the shaft; and', 'a second sensor operably coupled to the controller and the shaft, said second sensor configured to provide an instantaneous torque of the shaft., 'a park brake prognosis system associated with the shaft and the park brake, including2. The vehicle of claim 1 , further including an indicator operably coupled to the controller and configured for notifying an individual of said status calculated by the controller.3. The vehicle of claim 1 , wherein said park brake energy is a function of the speed of the shaft and the instantaneous torque of the shaft.4. The vehicle of claim 1 , wherein said status is a park brake near end of life status.5. The vehicle of claim 2 , wherein said controller further includes a memory.6. The vehicle of claim 5 , wherein said memory includes a set of predetermined values corresponding to a maximum number of engagements that said park brake may ...

METHODS AND SYSTEM FOR DIAGNOSING AN ENGINE COMPONENT BASED ON AN ENGINE SPEED PROFILE DURING AN ENGINE SHUTDOWN EVENT

Various methods and systems are provided for diagnosing an engine component based on a measured engine speed during an engine shutdown event. As one embodiment, a method for an engine includes measuring an engine speed drop rate, via an engine speed sensor, during an engine shutdown event; and indicating a change in performance of one of the engine speed sensor or an additional engine component in response to the measured engine speed drop rate deviating from a reference engine speed drop rate by a pre-set or pre-defined threshold rate. 1. A method for an engine , comprising:measuring an engine speed drop rate, via an engine speed sensor, during an engine shutdown event; andindicating a change in performance of one of the engine speed sensor or an additional engine component in response to the measured engine speed drop rate deviating from a reference engine speed drop rate by a threshold rate.2. The method of claim 1 , wherein the reference engine speed drop rate is determined based on an expected engine speed profile during the engine shutdown event stored in a memory of a controller of the engine and further comprising claim 1 , updating the stored engine speed profile based on the measured engine speed drop rate.3. The method of claim 2 , further comprising building a friction profile of the engine over time based on changes to the stored engine speed profile and monitoring changes in the friction profile.4. The method of claim 3 , further comprising adjusting an engine operating parameter during engine operation following the engine shutdown event claim 3 , based on the changes in the friction profile claim 3 , to maintain a desired engine speed.5. The method of claim 3 , further comprising indicating the change in performance of the additional engine component in response to the friction profile changing by greater than a threshold friction amount.6. The method of claim 5 , wherein indicating the change in performance of the additional engine component ...

Dynamometer for measurement of power through a rotating shaft

A device to monitor power and torque being transmitted through a rotating or stationary shaft for use as a dynamometer on a vehicle or machine drivetrain. It is complete with a power source and wireless data transmission device compatible with common consumer electronics, as well as a device to communicate with a vehicles OBD-II system if so equipped. In contrast to prior art devices, it is wireless, requires no modification to the existing drivetrain, requires no dedicated data acquisition system, and is robust enough to be used under normal operating circumstances for the machine or vehicle it is installed on. 1. A Dynamometer for measurement of torque and angular velocity being transmitted through a shaft that attaches to said shaft , without modification of said shaft , comprising: two mounting clamps; a shaft torque sensing device; an angular velocity sensing device; a power source; a data transmission device; a protective body.2. The invention of wherein claim 1 , said power source is a battery pack3. The invention of wherein said data transmission device is a Bluetooth transceiver4. The invention of wherein said angular velocity sensing device is a rate gyroscope5. The invention of wherein said angular velocity sensing device is an accelerometer measuring centripetal force6. The invention of wherein said angular velocity sensing device is an accelerometer measuring the frequency of change of direction of acceleration due to gravity7. The invention of wherein said angular velocity sensing device is a hall effect sensor claim 1 , pickup coil or variable reluctance sensor sensing the passing of stationary ferrous or magnetic object8. The invention of wherein said torque sensing device measures the displacement due to torsion of said rotating shaft between said mounting clamps9. The invention of wherein said torque sensing device is comprised of a metal strip connecting one of said mounting clamps the other on which the strain is measured10. The invention of ...

SENSOR AND SENSOR PACKAGE

According to one embodiment, a sensor includes a first support portion, a first movable portion, a first piezoelectric element, and a first magnetic element. The first movable portion extends in a first extension direction and is connected to the first support portion. The first piezoelectric element is fixed to the first movable portion. The first piezoelectric element includes a first electrode, a second electrode provided between the first electrode and the first movable portion, and a first piezoelectric layer provided between the first electrode and the second electrode. The first magnetic element is fixed to the first movable portion. The first magnetic element includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer. 1. A sensor , comprising;a first support portion;a first movable portion extending in a first extension direction and being connected to the first support portion;a first piezoelectric element fixed to the first movable portion, the first piezoelectric element including a first electrode, a second electrode provided between the first electrode and the first movable portion, and a first piezoelectric layer provided between the first electrode and the second electrode; anda first magnetic element fixed to the first movable portion, the first magnetic element including a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer.2. The sensor according to claim 1 , further comprising a second piezoelectric element claim 1 ,a direction connecting the first magnetic element and the first piezoelectric element being aligned with a first crossing direction crossing the first extension direction,the second piezoelectric element being fixed to the first movable portion and separated from the first piezoelectric element in the first crossing direction, a third ...

SENSOR ARRANGEMENT STRUCTURE

A sensor arrangement structure includes an output shaft provided with a disc portion at a leading end portion thereof. An output shaft cover has an inner surface portion disposed along and close to the disc portion. The disc portion is provided with ribs, the ribs extending in a radial direction of the disc portion while protruding toward the inner surface portion. A detector is disposed more inward in the radial direction of the disc portion than the ribs. 1. A sensor arrangement structure , comprising:a power unit;an output shaft that protrudes outwardly from a unit case of the power unit;an output shaft cover that covers the output shaft from outside in a protruding direction of the output shaft; anda detector that is mounted to the output shaft cover in order to detect rotational speed or torque of the output shaft,wherein the output shaft is provided with a disc portion at a leading end portion thereof,the output shaft cover has an inner surface portion disposed along and close to the disc portion,the disc portion is provided with ribs, the ribs extending in a radial direction of the disc portion while protruding toward the inner surface portion, andwherein the detector is disposed more inward in a radial direction of the disc portion than the ribs.2. The sensor arrangement structure according to claim 1 , wherein the ribs are formed so as to be inclined so that the more outward in the radial direction of the disc portion claim 1 , the more rearward the ribs are positioned with respect to a rotational direction of the disc portion.3. The sensor arrangement structure according to claim 1 , wherein the inner surface portion of the output shaft cover is provided with cover-side ribs claim 1 , the cover-side ribs extending in the radial direction of the disc portion while protruding toward the disc portion.4. The sensor arrangement structure according to claim 3 , wherein the cover-side ribs are formed so as to be inclined so that the more outward in the radial ...