Способ и система регулирования температуры и давления тензомостом

Изобретения относятся к измерительной технике, в частности к регулированию температуры и давления тензомостом. В способе регулирования температуры и давления тензомостом, включающем подачу тока на диагональ питания тензомоста и измерение напряжения на измерительной диагонали U, при смене направления тока питания тензомоста измеряют напряжение U. В отличие от прототипа, выходные переменные температуры t и давления р управляемого объекта в цифровых эквивалентах подают на вход контроллера, управляющий сигнал которого соответствует желаемым свойствам выходных переменных температуры Т и давления Р управляемого объекта, и его реализуют нормированной погрешностью ε, выполняющей роль автоматического регулятора, который адаптируется по диапазонам и температуры и давления за счет оценки фактических величин входных Q и выходных q переменных температуры t и давления р к нормированным эквивалентам Т, Р их максимальных величин в каждый момент времени и соответствующим отношению разности и суммы произведений ...

A SYSTEM FOR MACHINE COUNTING OPERATIONS

... 1,201,271. Forging. NATIONAL SCREW & MFG. CO. 31 Aug., 1967 [9 Sept., 1966], No. 39868/67. Heading B3H. [Also in Divisions G4 and H3] Apparatus for deriving electrical signals from mechanical stresses included within a predetermined range of magnitude and durations (e.g. from the main blows of a forging hammer) comprises a transducer 10 for developing voltages which vary in accordance with all said stresses and feeding an amplifier having a low-pass frequency characteristic, the output of said amplifier being inhibited for a predetermined time after the occurrence of each stress falling within said predetermined range of characteristics, so as to minimize the effect of unwanted stresses on the electrical output signal. As shown, a silicon strain gauge 10 is mounted on a forging hammer and is supplied with current from a power supply 22 after stabilization by Zener diode 21 and further stabilization by Zener diode 26 and emitter follower 18. The resulting voltages are amplified by transistors ...

Measuring the ratio R/R of a resistance half-bridge

The measuring circuit is used to measure the resistance ratio DELTA R/R in a resistance half-bridge comprising two series-connected resistors, of which the one resistor has the resistance R+ DELTA R and the other resistor the resistance R- DELTA R. The two resistances are traversed by the same current which generates a voltage drop at each resistor. By an integrating SC amplifier in successive sampling cycles difference voltages which are proportional to the difference between the voltage drops at the two resistors are integrated to give an integration voltage. Every time the integration voltage exceeds an upper threshold value or drops below a lower threshold value in a compensation cycle a compensation voltage directed oppositely to the difference voltage is superimposed on the integration voltage and is proportional to the sum of the voltage drops at the two resistors. As a measure of the resistance ratio DELTA R/R the ratio of the number of compensation cycles to the number of sampling ...

Transducer system

A system is provided for processing variable electrical signals from a plurality of strain gauge networks (1, 2, 3, 4) on a structure whereby a resultant electrical output from each network is only a function of a designated force which each network is intended to monitor and has been corrected for a reaction by the network to forces which other strain gauge networks on the structure are intended to monitor. The system includes interconnected processing means (5, 6, 7, 8) for connection to the networks (1, 2, 3, 4) whereby an electrical signal from each network is applied to an associated processing means. Each processing means (5, 6, 7, 8) has means to amplify, and optionally to invert, the signal received from its associated network (1, 2, 3, 4) and also has means incorporating selected electrical resistors (9, 10, 11, 12), to receive from the other processing means and to add to or subtract from the signal, a predetermined proportion of corresponding amplified and optionally inverted ...

SEMICONDUCTOR STRAIN GAGE WITH FREQUENCY OUTPUT

... 1,223,810. Measuring force electrically. GENERAL ELECTRIC CO. July 29, 1969 [Aug. 9, 1968], No.38039/69. Heading G1N. [Also in Division G3] A transducer for measuring force comprises two pairs of semi-conductor strain gauges mounted so that each pair is stressed oppositely by the applied force, each pair being connected in a Wien bridge oscillator circuit so that the strain gauge resistance determines the oscillator frequencies, which are therefore varied differentially by the force whose magnitude is indicated by the frequency difference. In one embodiment, Fig. 2, for measuring acceleration, a constant stress cantilever beam 15 of n-type single crystal silicon is rigidly secured at one end to a support 16 and carries a mass 17 at the other end. Two pairs of strain gauges R5, R6 and R7, R8 formed by elongated strips of p-type silicon are formed on the opposite faces, each pair being connected in a Wien bridge oscillator circuit, Fig. 1, (not shown), initially adjusted to the same resonant ...

Digital strain measurement technique

An electrical circuit provides a digital representation of strain and uses electrical resistance strain gauges 2, 4 arranged in a Wheatstone bridge 1. The bridge unbalance output is integrated at 16 and compared with a reference at 19. When the reference is exceeded, flip-flop 23 changes state and closes analogue CMOS switches 10, 11 to connect resistors 8, 9 in parallel with bridge resistors 3, 5. The length of time the resistors are switched in parallel with the bridge is proportional to the magnitude of the applied strain and this time is determined by counting clock pulses. The result is displayed as a digital representation of the strain applied. ...

KLASSIERGERAET

KLASSIERGERAET

READ-OUT DEVICE

MANUAL MUSCLE TESTER

MATERIAL TESTING DEVICE WITH SOLENOID-APPLIED TEST FORCE

MATERIAL TESTING DEVICE A testing device for applying a force to a material test sample includes a test fixture for engaging the test sample and a solenoid, operatively coupled to the test fixture, for applying a predetermined force to the test sample in response to a solenoid control signal. A strain gauge is mounted on the test fixture and provides an electrical output indicative of the force applied to the test sample. A force setting circuit provides an electrical output indicative of the predetermined force which is to be applied to the test sample. A solenoid control circuit is responsive to the output from the strain gauge means and to the output of the force setting means and provides a control signal to the solenoid such that the predetermined force may be applied to the test sample. The force setting circuit provides an electrical output having an adjustable rate of increase and an adjustable maximum level. A sample circuit monitors the output of the strain gauge to store the ...

LOAD CELL

PEAK DYNAMIC STRESS CALCULATOR

ELECTRONIC CIRCUITRY FOR HIGH-TEMPERATURE ENVIRONMENTS

A circuitry adapted to operate in a high-temperature environment of a turbine engine is provided. A relatively high-gain differential amplifier (102) may have an input terminal coupled to receive a voltage indicative of a sensed parameter of a component (20) of the turbine engine. A hybrid load circuitry may be coupled to the differential amplifier. A voltage regulator circuitry (244) may be coupled to power the differential amplifier. The differential amplifier, the hybrid load circuitry and the voltage regulator circuitry may each be disposed in the high-temperature environment of the turbine engine.

Elektrische Messvorrichtung.

Wechselstrom-Messbrückenschaltung

Messgerät zur Messung mechanischer Grössen

Vorrichtung zur elektrischen Messwertübertragung

Verfahren zum Betrieb einer Schaltung mit einer Wheatstone'schen Brücke

Elektrischer Dehnungsmessstreifen

Einrichtung für die Zufuhr von Zusatzluft zum Brennstoff-Luftgemisch bei Ottomotoren

Appareil indicateur de la valeur de pointe des sollicitations mécaniques dans une partie de machine

Dispositif pour appliquer à une charge des signaux d'information et utilisation de ce dispositif

Verfahren und Gerät zum gleichzeitigen direkten Bestimmen mehrerer Grössen, insbesondere mechanischer Spannungen, Momente und Querdehnungszahlen

Procédé pour éliminer l'erreur introduite par les résistances de contact d'organes de commutation, de capteurs tensiométriques à un pont de mesure

EINRICHTUNG ZUM MESSEN DER VERSTIMMUNG EINER VORWIEGEND OHMSCHEN BRUECKENSCHALTUNG.

Messgerät zur Messung mechanischer Grössen

Dispositif électrique pour mesures de tensométrie

Elektronischer Messwertwandler, insbesondere für Widerstandsgeber

Messvorrichtung zum Messen einer Belastung mit Widerstandselementen

LOAD MEASURING INSTRUMENT FOR AN ELEVATOR CAR.

Sensor assembly and method for providing a plurality of signals and injection molding machine and method for controlling injection molding machine.

Die Erfindung betrifft eine Sensoranordnung (1) zum Bereitstellen mehrerer Signale aus einem einzigen Sensor (2) zur Messung einer Schliesskraft, eines Werkzeuginnendruckverlaufs und des Formschutzes einer Spritzgiessmaschine, umfassend einen Sensor (2) und ein Verstärkerelement (3). Das Verstärkerelement (3) weist einen Eingang (10) zum Anschliessen des Sensors (2) und einen ersten und einen zweiten Ausgang (11, 11´) zum Ausgeben eines ersten und eines zweiten Signales (12, 12´) auf, wobei das Verstärkerelement (3) einen A/D-Wandler (6), einen Mikroprozessor (7) und einen ersten und einen zweiten Verstärker (5, 5´) aufweist. Der erste und zweite Ausgang (11, 11´) des Verstärkerelementes (3) sind mit dem Eingang (10) über den A/D-Wandler (6) und den ersten bzw. zweiten Verstärker verbunden. Weiterhin betrifft die Erfindung eine Spritzgiessmaschine, ein Verfahren zum Bereitstellen von Signalen sowie ein Verfahren zum Steuern einer Spritzgiessmaschine.

Sensor assembly and method for providing a plurality of signals, and injection molding machine and method for controlling injection molding machine.

Die Erfindung betrifft eine Sensoranordnung (1) zum Bereitstellen mehrerer Signale aus einem einzigen Sensor (2) zur Messung einer Schliesskraft, eines Werkzeuginnendruck-Verlaufs und des Formschutzes einer Spritzgiessmaschine, umfassend einen Sensor (2) und ein Verstärkerelement (3). Das Verstärkerelement (3) weist einen Eingang (10) zum Anschliessen des Sensors (2) und einen ersten und einen zweiten Ausgang (11, 11´) zum Ausgeben eines ersten und eines zweiten Signales (12, 12´) auf, wobei das Verstärkerelement (3) einen A/D-Wandler (6), einen Mikroprozessor (7) und einen ersten und einen zweiten Verstärker (5, 5´) aufweist. Der erste und zweite Ausgang (11, 11´´) des Verstärkerelementes (3) sind mit dem Eingang (10) über den A/D-Wandler (6) und den ersten bzw. zweiten Verstärker verbunden. Weiterhin betrifft die Erfindung eine Spritzgiessmaschine, ein Verfahren zum Breitstellen von Signalen sowie ein Verfahren zum Steuern einer Spritzgiessmaschine.

Multistep metering circuit for industrial transducers - has switchable transducer groups and bridge compensation units and changeover switch between metering points

EQUIPEMENT DE CONTROLE DE CABLES-GUIDES

L'EQUIPEMENT DE CONTROLE DE CABLES-GUIDES EST PREVU POUR CONTROLER LES TENSIONS DANS LES CABLES QUI SERVENT DE GUIDES AUX CAGES OU BENNES DES PUITS D'EXTRACTION DES MINES SOUTERRAINES, MAIS PEUT AVOIR D'AUTRES APPLICATIONS. IL COMPREND UN CONDITIONNEUR DE SIGNAL 2, UN CIRCUIT DE MEMOIRE ANALOGIQUE 3, UN REDRESSEUR ET CIRCUIT DE DETERMINATION DE NIVEAUX D'ALARME ET DE COUPURE 8, UN REGISTRE NUMERIQUE 11, UN CAPTEUR D'EFFORT 1 ET D'UNE SOURCE D'ALIMENTATION. LE CONDITONNEUR 2 EST DESTINE A EXCITER LE PONT DE MESURE, A AMPLIFIER ET FILTRER LE SIGNAL EMIS PAR LE CAPTEUR 1. LA MEMOIRE 3 A POUR FONCTION DE REDRESSER LE SIGNAL DELIVRE PAR LE CONDITIONNEUR 2, PUIS DE COMPARER LE SIGNAL REDRESSE AVEC LES NIVEAUX DE SEUILS PREETABLIS POUR L'ALARME ET LA COUPURE ET DE MEMORISER LA VALEUR ABSOLUE MAXIMALE DE LA TENSION DELIVREE PAR LE CONDITIONNEUR 2. LE REGISTRE 11 EST CONCU POUR, AU MOYEN D'UN COMMUTATEUR 10, FAIRE LIRE INSTANTANEMENT LES EFFORTS. LE CAPTEUR RECUEILLE LES EFFORTS DE TENSION DU CABLE ...

Device annexes for extensometer with compensating network

Pont de measures with extensometric gauges

Improvements brought to the instruments for the stress measurement

PRESSURE SENSOR AND METHOD FOR MANUFACTURING SAME

A pressure sensor related to an embodiment, comprising: a substrate; internal electrodes positioned on one surface of the substrate; resistance connecting the corresponding internal electrodes to each other; a diaphragm facing one surface of the substrate to form the substrate and a gap; upper electrodes positioned on the other surface of the substrate; and at least one controllable resistance connecting the corresponding upper electrodes to each other. COPYRIGHT KIPO 2017 ...

Dispositivo para pesagem de veículos com o dispositivo de células de carga sem fio

dispositivo monitor do ciclo de vida e fadiga de mastros de sondas petrolíferas

Load detection apparatus

A load detection apparatus includes a load input portion having a input surface, and an output surface; a flexure element including on annular portion including a contacting portion configured to make contact with at least a part of the output surface, and a support portion; a set of sensors disposed on a reverse surface opposite to a surface provided with the contacting portion in the annular portion, each of the set of sensors being configured to detect distortion corresponding to an input load; a set of calculation portions configured to calculate a set of magnitudes of the load by use of respective detection results obtained by the set of sensors; and an abnormality determination portion configured to determine whether the set of sensors and the set of calculation portions have no abnormality, by comparing the set of magnitudes of the load with each other.

Retorque measuring apparatus

Apparatus for measuring the amount of previously applied torque to a fastener. A transducer is utilized to sense the amount of a subsequently applied torque to the fastener and provides an output signal representative of the applied torque. The torque is applied until further motion or breakaway of the fastener is obtained. Typically, the signal from the transducer increases until breakaway of the fastener is obtained and then the signal decreases momentarily to a valley before it again increases with further applied torque. In those instances where the particular fastener does not exhibit a well-defined valley torque signal, provision is made for detecting the value of the transducer torque signal upon breakaway. Preferably, circuitry is provided for artificially creating the valley when there is a change of slope in the torque signal above a given threshold level. This artificially created valley is detected by a negative peak detector whose output is generally closely associated with ...

TWO WIRE CURRENT TRANSMITTER RESPONSIVE TO A RESISTANCE SENSOR INPUT SIGNAL

Circuitry including a resistance sensor is excited by an external power source. A reference voltage is established, the voltage developed across the sensor resistance is compared at an amplifier input with a reference voltage signal and the voltage across a feedback resistor, and the total current drawn through the circuitry adjusts as a function of the sensor resistance to give a balanced amplifier input. Total current may be made a linear function of sensor resistance or a non-linear function by proper selection of certain resistors.

SAFETY SWITCH WITH IMBALANCE TEST

An apparatus for an imbalance test includes a strain measurement module that measures a strain voltage across terminals of a strain gauge. The strain voltage is representative of an amount of force on the strain gauge. The apparatus includes a test measurement module that measures a test voltage across the terminals of the strain gauge while a test resistor is connected in parallel with a resistor of the strain gauge. The test resistor is connected while the test measurement module measures the test voltage and is disconnected while the strain module measures strain voltage. The apparatus includes an average module that calculates an average strain voltage from two strain voltage measurements. The strain voltages are measured preceding and after the test voltage measurement. The apparatus includes a difference module that determines a difference voltage. The difference voltage is a difference between the average strain voltage and the test voltage.

Method and device for calibrating load sensors

A device and a method for calibrating load sensors which are provided at least one load cross-section of an aerofoil or control surface of an aircraft, the load sensors being calibrated on the basis of load coefficients (i) of the load sensors, which load coefficients a calculation unit calculates by evaluating a linear system of equations formed by means of mechanical loading of the aerofoil or control surface.

Pressure sensor device for measuring a differential normal pressure to the device and related methods

A pressure sensor device is to be positioned within a material where a mechanical parameter is measured. The pressure sensor device may include an IC having a ring oscillator with an inverter stage having first doped and second doped piezoresistor couples. Each piezoresistor couple may include two piezoresistors arranged orthogonal to one another with a same resistance value. Each piezoresistor couple may have first and second resistance values responsive to pressure. The IC may include an output interface coupled to the ring oscillator and configured to generate a pressure output signal based upon the first and second resistance values and indicative of pressure normal to the IC.

SYSTEM FOR MONITORING CONDITION OF ADJUSTABLE CONSTRUCTION TEMPORARY SUPPORTS

A system for adjustable construction or demolition temporary supports is disclosed. The adjustable construction or demolition temporary support includes a plurality of sensor devices for measuring load on the support and signal detection and communication device that being in communication with the sensor devices. The communication device further comprises a display unit and/or audio output unit for providing visual and/or audible alarm for alarming conditions. The signal detection and communication device further includes a wireless transceiver for remote monitoring.

Load cell

A load cell has four strain gauge resistors (18-1 to 18-4) formed through an insulation layer (4) on the beam body (2) having a strain generating section, a conductive pattern (12) for forming a bridge circuit by coupling the strain gauge resistors (18-1 to 18-4), compensation resistance sections (14,16-1, 16-2, 20-1, 20-2) for compensating the bridge balance and span of the bridge circuit is provided. A section of the conductive pattern except the section coupled to the strain gauge resistors (18-1 to 18-4) is disposed at a position sufficiently isolated from the strain gauge resistors (18-1 to 18-4).

抵抗式箔圧力センサの状態信号に対する信号処理回路

... 座席占有検出装置において使用されるFSR箔圧力センサ(10)の状態に関する信号を処理しかつ評価するための簡単な信号処理回路は、マイクロコントローラMCU(2)において実現されているデジタル制御および調整機能を有する車両においていずれにせよ存在している特定の用途向け集積回路(3)が高精度のスイッチング可能な検査電圧源(4)を含んでいるという事実を利用している。FSR箔(10)を含んでいる電流回路の一端は、ASIC(3)の、高精度の検査電圧を導くスイッチング出力側VTAに接続されている。この電流回路の他端はMCU(2)のポート(PORT0)に接続されている。FSR箔(10)に直列に接続されている基準抵抗(R1)において、FSR箔を流れる、状態に依存している電流の強度に依存している測定抵抗が降下し、この測定電圧はMCU(2)のAD変換器入力側(ADC)に供給されかつその中で、FSR箔の占有状態を指示する信号に変換される。このようにして、唯一の精密なスイッチング可能な直流電圧源、MCU(2)の1つのポート(PORT0)並びにADCチャネルだけによってFSR箔(10)の占有・非占有状態を評価しかつ種々のエラー状態を検出することができる(第1図)。 ...

Brueckenschaltung mit Dehnungsmessstreifen

Kraftmesseinrichtung

DETEKTIONSVORRICHTUNG

Eine Detektionsvorrichtung (10) umfasst eine Brückenschaltung (14) mit wenigstens einem Abtastwiderstand, dessen Widerstand in Abhängigkeit einer physikalischen Größe eines Messobjekts variiert, eine Stromzufuhr (16), die dazu ausgestaltet ist, auf die Brückenschaltung (14) eine Spannung aufzubringen, einen Messverstärker (38), der dazu ausgestaltet ist, eine Ausgangsspannung der Brückenschaltung (14) von Eingangsanschlüssen (38a, 38b) mit hoher Impedanz zu empfangen, die empfangene Ausgangsspannung zu verstärken und die verstärkte Ausgangsspannung auszugeben, und eine Berechnungseinheit (43) für eine physikalische Größe, die dazu ausgestaltet ist, die durch den Messverstärker (38) verstärkte Ausgangsspannung zu empfangen und die physikalische Größe auf der Basis der Ausgangsspannung zu berechnen. Die Brückenschaltung (14) ist über einen Verbinder (28) mit dem Messverstärker (38) verbunden.

Circuit arrangement for strain-gauge strips

The invention relates to a circuit arrangement for strain-gauge strips, in the case of which circuit arrangement at least four half-bridges are connected in a parallel circuit to a current source, the potentials of the half-bridges are connected together in pairs, and the potential differences are determined by means of a differential-measurement amplifier having a very high input impedance and a very low input current. Any desired half-bridge pairs are formed, it being possible to allocate each half-bridge simultaneously to different bridge pairs in order to determine both forces and torques. ...

Schaltungsanordnung fuer Dehnungsmessstreifengeber

BRUECKENVERSTAERKERSCHALTUNG

System for Measurement of Properties on a Rotating Body

... 1,178,629. Telemetering. UNITED AIRCRAFT CORP. Jan.1, 1968 [Jan.10, 1967], No. 153/68. Heading G1N. Apparatus for measuring electrically a variable parameter on a rotating body comprises magnetic means for generating power on the rotor to energize transducers which measure the parameter and control accordingly a variable frequency signal which is fed to a stator by capacitive couplings. As shown Fig. 1 for measuring stress in the blades 12, 14 of a propeller, an alternating voltage is developed by interaction between a coil 32 on the rotor and a magnetized toothed stator 36 and led to a solid state circuit module 24 where it is rectified and regulated and fed to skain gauges 16, 18 mounted on the blades to produce proportional voltages which determine the frequencies of two oscillators whose outputs are taken to rotating ring electrodes 28, 30 capacitively coupling with stator 36. The signals are then separated and fed to a monitor 40. The generated AC may also be fed out to indicate the ...

System and method for monitoring body movement

Multiplexed strain gauge bridge

A strain gauge load measuring system includes a pair of strain gauges mounted on each of one or more load supports, such as the axles of a vehicle. The strain gauges connect in a DC bridge circuit. A multiplexer comprises a pair of analog switches which alternately apply the voltage from respective bridge output terminals to an AC coupled amplifier, as a square wave voltage of amplitude equal to the difference between the voltages on the bridge output terminals. The amplified square wave voltage is applied across a meter as an amplified DC signal proportional to the DC bridge output signal, by a demultiplexer incorporating a further pair of analog switches cooperating with low pass filter elements. The demultiplexed DC signal across the meter is compared by an operational amplifier, having positive feedback for hysteresis, with the voltage on a variable voltage divider to determine when a threshold load value has been reached.

MEASUREMENT OF GRIP STRENGTH

Improvements in or relating to strain measuring instruments

... 1,094,413. Measuring strain electrically. WESTLAND AIRCRAFT Ltd. Jan. 27, 1966 [Feb. 2, 1965], No.4539/65. Heading G1N. Relates to an instrument for detecting and indicating the maximum strain to which a member is subjected, e.g. due to impact loading in a power press, or loads of short duration. Four strain gauge resistors of a load cell Fig. 1 (not shown) are connected to form respective arms of a bridge circuit Fig. 2 (not shown) energized from a stabilized D. C. source. The bridge output signal is applied via calibrating and amplifying circuits Fig. 2 (not shown) to a unity gain amplifier (Fig. 3) embodying signal storage facilities. The unity gain amplifier input signal from a resistor 36 is applied to a transistor 37 the output of which is applied via an impedance matching transistor 39 and resistor 40 to the base of a charging transistor 41, which charges a storage capacitor 42 to a voltage corresponding to the strain representative signal voltage. This voltage is applied direct ...

CIRCUIT ARRANGEMENT FOR CONVERTING A RESISTANCE VARIATION INTO A FREQUENCY VARIATION

KLASSIERGERAET

STRAIN DETECTION

Crank arm with strain amplifier

Strain sensors in an electronic device

One or more strain sensors can be included in an electronic device. Each strain sensor includes a strain sensitive element and one or more strain signal lines connected directly to the strain sensitive element. The strain sensor(s) are used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region or surface of the electronic device. A strain sensitive element is formed or processed to have a first gauge factor and the strain signal line(s) is formed or processed to have a different second gauge factor. Additionally or alternatively, a strain sensitive element is formed or processed to have a first conductance and the strain signal line(s) is formed or processed to have a different second conductance.

TWO WIRE CURRENT TRANSMITTER RESPONSIVE TO A SENSOR INPUT

VEHICLE WEIGHING DEVICE HAVING WIRELESS LOAD CELL DEVICE

A vehicle weighing device 54 comprising a weigh pad 56 adapted to receive at least one wheel 57 of a vehicle, a low-power consumption wireless load cell device 10 on the weigh pad 56, a remote interrogation device 32 which is wirelessly communicable with the load cell device 10. The load cell device 10 includes a local non-mains power supply, preferably being a battery 24, a load cell 16 energisable by the onboard power supply 24, and a wireless communication element 18. The load cell 16 includes a strain gauge 20 whereby a ratio of strain gauge resistances is determined by the time measurement of capacitor discharge thus minimising power consumption, and an activator 10a which energises the strain gauge 20 via the non-mains power supply 24. The remote interrogation device 32 also includes a receiver 33 which receives data outputted by the strain gauge 20 via the wireless communication element 18.

HYBRID LOAD DIFFERENTIAL AMPLIFIER OPERABLE IN A HIGH TEMPERATURE ENVIRONMENT OF A TURBINE ENGINE

A circuitry (120) adapted to operate in a high-temperature environment of a turbine engine is provided. The circuitry may include a differential amplifier (122) having an input terminal (124) coupled to a sensing element to receive a voltage indicative of a sensed parameter. A hybrid load circuitry (125) may be AC-coupled to the differential amplifier. The hybrid load circuitry may include a resistor-capacitor circuit (134) arranged to provide a path to an AC signal component with respect to the drain terminal of the switch (e.g., 128) of a differential pair of semiconductor switches 126, 128, which receives the voltage indicative of the sensed parameter.

FITTING Of AMPLIFICATION HAS D.C. current

플렉서블 촉각 센서 및 이의 제조 방법

... 본 발명은 플렉서블 촉각 센서 및 이의 제조 방법에 관한 것으로, 플렉서블 촉각 센서는 폴리머 층, 상기 폴리머 층의 상부에 형성된 제1 금속층, 상기 제1 금속층의 상부에 형성되고 변형에 따라 저항값이 변화하는 스트레인 게이지와 상기 스트레인 게이지에 연결된 금속 배선을 포함하는 제1 센서 층, 상기 제1 센서 층을 보호하는 제1 커버 층, 상기 폴리머 층의 하부에 형성된 제2 금속층, 상기 제2 금속층의 하부에 형성되고 변형에 따라 저항값이 변화하는 스트레인 게이지와 상기 스트레인 게이지에 연결된 금속 배선을 포함하는 제2 센서 층 및 상기 제2 센서 층을 보호하는 제2 커버 층을 포함한다.

탄성 촉각 센서 및 그 제조 방법

... 탄성 촉각 센서 및 그 제조 방법이 개시된다. 개시되는 일 실시예에 따른 탄성 촉각 센서는, 탄성 및 절연성을 갖는 베이스 부재; 상기 베이스 부재의 상부에 형성되는 전극층; 및 상기 전극층의 상부에서 상기 전극층과 접촉되고, 외부에서 가해지는 압력에 따라 체적이 변화하여 저항 값이 변화되도록 마련되는 감지층을 포함한다.

Electrical measuring circuit

A multipoint measuring device is based on a measuring bridge network and uses transducers which convert the quantity under measurement into an electrical signal, the transducers being divided into two identical groups, and being connected via a selector switch and main and auxiliary compensators in one or two adjacent arms of the measuring bridge network. With the transducers connected in two adjacent arms of the measuring bridge network, each transducer group is connected only in a single arm via its respective main compensator and its respective auxiliary compensator and the connection point of two auxiliary compensators is used as a measurement point of a measuring diagonal of the measuring bridge network. With the transducers connected in a single arm of the measuring bridge network, each transducer group is connected alternately in a respective arm via its respective main compensator and its respective auxiliary compensator, while only a respective auxiliary compensator is connected ...

Input interface device with semiconductor strain gage

In another instance the interface device may be used to measure the magnitude of the force applied to a control toggle on the steering wheel of a car. The toggle may be used to control the intensity of the sound emitted from the audio system in the car. A high magnitude force could be processed to cause the intensity of the sound to change rapidly whereas a low magnitude force could be processed to cause the intensity of the sound to change slowly.

LOAD CELL

PURPOSE: To obtain a product which is stable with lapse of time by forming so that patterns of a denominator and a numerator of R1/R2 or R3/R4 functioning as balanced conditions of four bridge-coupled strain gauge resistor parts become symmetrical. CONSTITUTION: A condition that a bridge circuit formed by a strain gauge resistor part 11 is balanced is R1/R2=R3/R4 in case when a correcting part is neglected. Therefore, as for each strain gauge resistor part 11, a structure by which a time aging stress variation of an insulating film 7 does not occur is formed. Also, a lead part 15 and correcting parts 12, 13 and 14 are separated sufficiently from the pattern of the strain gauge resistor part 11, therefore, said resistor part is not affected by an aging stress variation caused by the lead part 15, etc., and an aging variation of a bridge balance does not occur. Accordingly, even if there is an influence by a stress to the strain gauge resistor part, a product which is stable with lapse of ...

Тензометрическое устройство

Изобретение относится к измерительной технике. Тензометрическое устройство содержит тензорезисторный датчик, эталонный резистор, коммутатор, операционный усилитель, программируемую многофункциональную плату управления (ПМПУ) с программным обеспечением. Тензорезистивный датчик состоит из гибких чередующихся слоев проводящих взаимно перпендикулярных шин, контактирующих с расположенным между ними слоем гибкого тензорезистивного полимера. Данный тензорезистивный датчик размерностью X на Y позволяет получать массив данных о деформации датчика в n на m точках. Технический результат: повышение уровня информативности измерений, а именно получение представления о распределении относительной деформации (поле деформации) на значительной площади поверхности нагруженного объекта, а также измерение деформации в любой точке и по любой линии объекта испытаний. 2 з.п. ф-лы, 2 ил.

MESSEINRICHTUNG FUER DIE VERSTIMMUNG VON VORWIEGEND OHMSCHEN BRUECKENSCHALTUNGEN

Dehnungsmeßstreifen-Meßanordnung, Verwendung derselben und Modulationsverstärker für derartige Meßanordnungen

The proposed measurement device comprises a strain gauge component (10) made up of at least one strain gauge (15) and integrated in a measurement sensor (1). An auxiliary circuit (20) amplifies output signals from the strain gauge component (10) and is similarly integrated in the measurement sensor (1). The measurement device thus created is used for general measurement tasks, in particular for commercially available domestic or industrial scales including battery operated weighing devices. A modulation amplifier, consisting of a modulator in the form of a square-wave generator, an a.c. amplifier and a demodulator, can be used as the auxiliary circuit. The demodulator is a bridge rectifier formed by four electronic (on-off) switches or two electrical two-way switches.

Vorrichtung und Verfahren zur Signalauswertung von Wägezellen mit Dehnmessstreifen

Verfahren zur Überwachung der Struktur eines faserverstärkten Verbundwerkstoffs mit einer Sensoranordnung aus einer Mehrzahl von Sensoren zur Strukturüberwachung des Verbund- werkstoffs

Verfahren zur Überwachung der Struktur eines faserverstärkten Verbundwerkstoffs (1) mit einer Sensoranordnung aus einer Mehrzahl von Sensoren zur Strukturüberwachung des Verbundwerkstoffs, wobeielektrische Leiterbahnen (4, 5) in den Verbundwerkstoff (1) eingearbeitet sind und durch den Verbundwerkstoff hindurch verlaufen,die elektrischen Leiterbahnen in einer ersten Gruppe und in einer zweiten, von der ersten Gruppe verschiedene Gruppe angeordnet sind, wobeidie elektrischen Leiterbahnen der ersten Gruppe in eine erste Richtung verlaufen,die elektrischen Leiterbahnen der zweiten Gruppe in eine von der ersten Richtung verschiedenen Richtung verlaufen und die elektrischen Leiterbahnen der ersten Gruppe schneiden und somit zusammen mit den Leiterbahnen der ersten Gruppe ein Netz aus n Zeilenleitern (4) und m Spaltenleiter (5) bilden,ein Signalverarbeitungsmittel zur Überwachung wenigstens einer elektrischen Eigenschaft der Leiterbahnen vorgesehen ist, wodurch der strukturelle Zustand des Verbundwerkstoffs ...

Linear low drift bridge amplifier

A transducer bridge amplifier system includes a first operational amplifier having positive and negative inputs connected, respectively, to first and second output nodes of the bridge. The output of the operational amplifier is connected to a third node of the transducer bridge. A transducer of the transducer bridge is connected between the second node and the third node. A second operational amplifier has its positive input connected to ground and its negative input connected to the first node. A feedback resistor is coupled between the output of the second amplifier and a negative input of the second amplifier. An output signal produced by the second operational amplifier has a linear response to transducer deviation and low sensitivity to offset voltages of the first and second operational amplifiers. In a second alternate embodiment of the invention, the second operational amplifier has its output and its negative input connected to a negative terminal of a voltage supply biasing the ...

METHOD AND APPARATUS FOR DETERMINING APPLIED STRESS

GUIDE CABLE CONTROL EQUIPMENT

Analogue Converter.

... 1,196,056. Measuring pressure electrically. ITT INDUSTRIES Inc. April 10, 1968 [April 13, 1967], No.17379/68. Heading G1N. [Also in Division G3] A differential fluid-pressure is measured electrically by a pair of bellows 11,12, Fig.1, subjected to the individual pressures, producing a corresponding angular rotation of a shaft 14 to which they are linked, the shaft being attached by flexure wire 30, Fig. 2a, to a beam 23 carrying strain gauge resistors 26, 27. These are connected in a bridge circuit 15 whose output is linearized at 19 with respect to pressure difference to produce a proportional load current in the D.C. supply system 21. Details of the circuitry are given, Fig. 3 (not shown). The beam 23 is shaped to exhibit substantially constant strain throughout the region at which the strain gauges 26, 27 are attached.

MULTIPOINT MEASURING DEVICE

Material testing device

A testing device for applying a force to a material test sample includes a test fixture for engaging the test sample and a solenoid, operatively coupled to the test fixture, for applying a predetermined force to the test sample in response to a solenoid control signal. A strain gauge is mounted on the test fixture and provides an electrical output indicative of the force applied to the test sample. A force setting circuit provides an electrical output indicative of the predetermined force which is to be applied to the test sample. A solenoid control circuit is responsive to the output from the strain gauge element and to the output of the force setting element and provides a control signal to the solenoid such that the predetermined force may be applied to the test sample. The force setting circuit provides an electrical output having an adjustable rate of increase and an adjustable maximum level. A sample circuit monitors the output of the strain gauge to store the peak force applied to ...

Improvements in or relating to equipment for use with electrical resistance strain gauges

... 586,229. Resistance measurements ; determining dimensions of materials. AUGHTIE, F. Nov. 29, 1943, No. 19865. [Class 37] In equipment for use with electrical strain gauges which incorporates a sensitive indicating or recording instrument having a D.C. movement a circuit breaker is provided, either in the circuit of the instrument or of the circuit supplying power, which is of electronic type or is arranged to operate before the instrument circuit is completed elsewhere, the breaker in either case automatically opening before the instrument can be damaged when a condition exists which would seriously overload the instrument. The circuit breaker may be operated by the aid of a valve amplifier or may itself be a thermionic valve or gas discharge tube. Fig. 1 shows an arrangement for protecting a galvanometer from excessive voltage due to an open circuit in the gauge itself such as may occur if the specimen or structure is tested to destruction by applying a progressively increasing load. The ...

STRAIN GAGE ROSETTE CALCULATOR

... 1,200,740. Analogue calculating. AUTOMATION INDUSTRIES Inc. 3 Oct., 1967 [3 Oct., 1966], No. 44920/67. Heading G4G. Theory.-Strain gauges 11, 12, 13 angularly disposed mutually at 45 degrees on a test surface 10 (Fig. 1a) develop measured strains e 1 , e 2 , e 3 which are plotted abscissaly in a Mohr circle construction (Fig. 2a) wherein the centre is the midpoint between e 1 and e 3 and the projections of e 1 , e 3 to the circle define radii displaced about the centre at twice the angles of the physical displacement of the gauges; the radii from the projections of e 1 and e 3 defining a diameter and the radius from the projection of e 2 being perpendicular thereto. It is shown that e max = A + (C sin 2# + B cos 2#) (1) e min = A - (C sin 2# + B cos 2#) (2) max = 2 (C sin 2# + B cos 2#) (3) and # is given by B sin 2# - C cos 2# = 0 (4) where e max = maximum strain e min = minimum strain max = maximum shear. Computation.-Signals e 1 , e 3 representing the strain readings of gauges 11 and ...

WEB TENSION MEASURING MEANS

... 1435701 Measuring tension electrically SIMON-UK Ltd 23 May 1973 [24 May 1972] 24436/72 Heading G1N Apparatus for measuring the difference in tension across a moving web of material comprises a roller 20, Fig. 2 mounted by bearings 21 on a tubular beam 23 at each end, which displaces the web from its straight path between feedrollers, whereby the tension has a component tending to bend the beams 23 and is measured by strain gauges 24a, 24b at one end and 34a, 34b at the other end. The strain gauges are connected in individual bridge circuits whose outputs are compared to determine the difference in tension across the web.

Mechanism for the reduction of the CO content of the exhaust gases of petrol engines

Bridge connection with strain gauges

METHOD AND SYSTEM FOR DETERMINING THE WEIGHT AND CENTRE OF GRAVITY OF A STRUCTURE

The present invention belongs to the field of structures and relates to a method and system for determining the weight and at least a first coordinate of the centre of gravity of a structure such as a vehicle, in particular, an aircraft.

MATERIAL TESTING DEVICE WITH SOLENOID-APPLIED TEST FORCE

DRIFT CORRECTOR FOR TRANSDUCERS

Electronic Circuit for a Transducer

Electric tool

ASSEMBLY OF CIRCUIT BEING USED TO CONVERT A VARIATION OF RESISTANCE INTO A VARIATION OF FREQUENCY

CIRCUIT ARRANGEMENT FOR DERIVING OUTPUT SIGNALS FROM A RESISTIVE BRIDGE NETWORK

System and method for strain and acoustic emission monitoring

A device is provided for monitoring strain and acoustic emission in an object. The device includes: a strain measurement portion operable to measure strain; an adhesive layer disposed on the strain measurement portion; and a peel-off mask disposed on the adhesive layer. In an example embodiment, the strain measurement portion includes a body, a transparent window portion, a strain measurement device and a signal processing portion. The body includes an attachment surface, wherein the adhesive layer is disposed on the attachment surface for attachment of the body to the object. The transparent window portion is arranged to enable viewing of a portion of the object through the body. The strain measurement device is disposed within the transparent window portion and is operable to generate a strain signal based on strain in the object. The signal processing portion is operable to generate a processed signal based on the strain signal.

SENSOR AND METHOD OF MANUFACTURING THE SAME

A sensor and a method of manufacturing the same are provided. The sensor includes a substrate, a projecting portion including a plurality of projections that protrude upwardly from an upper portion of the substrate, and an electrode portion covering the projections and the upper portion of the substrate between the projections. The projecting portion of the sensor may have a micro-size projections and sense pressure applied thereto and a sliding movement thereon. 1. A sensor comprising:a substrate;a projecting portion comprising a plurality of projections that protrude upwardly from an upper portion of the substrate, the projections comprising an elastic material; andan electrode portion comprising a conductive material and covering the projections and the upper portion of the substrate between the projections.2. The sensor according to claim 1 , wherein a height of the projections is greater than an interval between the projections adjacent to each other claim 1 , and the projections tilts in response to horizontal force being applied thereto and the projections returns to original shapes thereof in response to the force being removed.3. The sensor according to claim 1 , wherein the projections have a pattern like a fingerprint in a top plan view.4. The sensor according to claim 2 , wherein the projections have a pattern like a fingerprint in a top plan view.5. The sensor according to claim 1 , wherein the projections are formed integrally with the substrate.6. The sensor according to claim 2 , wherein the projections are formed integrally with the substrate.7. The sensor according to claim 1 , wherein the substrate and the projections are formed of an elastic dielectric material.8. The sensor according to claim 2 , wherein the substrate and the projections are formed of an elastic dielectric material.9. The sensor according to claim 1 , wherein the electrode portion comprises a graphene material.10. The sensor according to claim 2 , wherein the electrode portion ...

Measurement apparatus

Measurement apparatus, for generating a first output signal indicative of a measurand, comprises: a first oscillator circuit and a second oscillator circuit, each oscillator circuit being arranged to generate a respective oscillating output signal and comprising at least a respective first component having a property determining a respective output frequency of the respective oscillating output signal; a sensor for sensing said measurand, the sensor comprising said first component of the first oscillator circuit, said property of said first component of the first oscillator circuit being dependent upon said measurand; and circuitry arranged to receive said oscillating output signals and generate said first output signal, said first output signal being indicative of a number of cycles of one of the first and second oscillating output signals in a time period determined by a period of the other of said first and second oscillating output signals.

TWO DIMENSIONAL MATERIAL-BASED PRESSURE SENSOR

This disclosure provides example methods, devices, and systems for a two dimensional material-based pressure sensor. A sensor device is provided that includes a substrate having a back electrode, a conductive layer in communication with the back electrode, and an insulating layer coupled to the conductive layer. The insulating layer includes one or more cavity regions. A sensor membrane comprising a two-dimensional material is disposed adjacent to the insulating layer and covering at least one of the one or more cavity regions. A first sensing electrode is in electrical communication with a first region of the sensor membrane, and a second sensing electrode is in communication with a second region of the sensor membrane. The sensor membrane is configured to respond to pressure changes exerted on the sensor device. 1. A sensor device comprising: a back-electrode;', 'a conductive layer, in communication with the back-electrode; and', 'an insulating layer coupled to the conductive layer, the insulating layer comprising one or more cavity regions;, 'a substrate that includesa sensor membrane comprising a two-dimensional material and disposed adjacent to the insulating layer and covering at least one of the one or more cavity regions;a first sensing electrode in electrical communication with a first region of the sensor membrane; anda second sensing electrode in communication with a second region of the sensor membrane;wherein the sensor membrane is configured to respond to pressure changes exerted on the sensor device.2. The sensor device of claim 1 , wherein the back-electrode is configured to measure a capacitance change relative to the first or second sensing electrode based on pressure-induced deflection of the sensor membrane.3. The sensor device of claim 1 , wherein the back electrode is configured to accept a controlled voltage for producing an electric field claim 1 , and wherein the sensor membrane is configured to produce a transconductive resistance change ...

PRESSURE SENSING DEVICE AND MANUFACTURING METHOD THEREOF

A pressure sensing device includes a substrate, at least a pressure sensing module, and a packaging layer. The pressure sensing module is arranged at the substrate including a plurality of conductive units, a plurality of pressure sensing blocks and a plurality of buffer units. Each conductive unit has a first electrode and a second electrode. The pressure sensing blocks are respectively arranged at the conductive units. Each pressure sensing block has a circuit structure that electrically connects the first electrode and the second electrode of each corresponding conductive unit. Each buffer unit is arranged between each corresponding conductive unit and each corresponding pressure sensing block comprising a plurality of buffer bumps arranged in an array at the first electrode and the second electrode of each corresponding conductive units. The packaging layer is bonded to the substrate, the conductive units and the pressure sensing blocks. 1. A pressure sensing device adapted to sense pressure and be electrically connected to a processing unit , the pressure sensing device comprising:a substrate; a plurality of conductive units, each of the conductive units having a first electrode and a second electrode spaced apart from each other and arranged at the substrate, a first wire connected to the first electrode for grounding, and a second wire connected to the second electrode and adapted to be electrically connected to the processing unit;', 'a plurality of pressure sensing blocks arranged at the conductive units respectively, each of the pressure sensing blocks having a circuit structure that electrically connects the first electrode and the second electrode of the corresponding each of the conductive units and can produce different resistances at different degrees of pressure; and', 'a plurality of buffer units, each of the buffer units being arranged between the corresponding each of the conductive units and the corresponding each of the pressure sensing blocks, ...

PORTABLE STRAIN GAUGE FOR IMPROVED IMPULSE AND PEAK FORCE DETECTION

Systems and methods for evaluating the performance of an athlete using a strain gauge is described. In some embodiments, the measurement system comprises a strain gauge and a central processing device. The strain gauge can include a power source, an inertial measurement unit (“IMU”) comprising a load cell, a microcontroller, and a wireless communication module. The strain gauge can be configured to output strain data at a rate of at least 1 kHz and the central processing device can be configured to receive the strain data transmitted from the wireless communication module. 1. A system for measuring physical exertion comprising: a power source,', 'an inertial measurement unit (“IMU”) comprising a load cell having a resistive circuit supported by a conductive material, wherein the resistive circuit varies its resistance in proportion to an amount of force applied to the conductive material, and wherein the load cell is configured to output strain data at a rate of at least 1 kHz,', 'a microcontroller comprising a processor and a memory for storing instructions and strain data received from the IMU, wherein the microcontroller is coupled to the power source and the processor is configured to execute the instructions stored in the memory, and', 'a wireless communication module coupled to the microcontroller and configured to transmit strain data stored in the memory in real-time; and, 'a strain gauge havinga central processing device configured to receive strain data transmitted from the wireless communication module; convert the strain data into force measurements,', 'store the force measurements into a force event array,', 'detect a force event based on the force measurements of the force event array,', 'determine the length of the force event,', 'determine the max force based on the length of the force event, and', 'determine a rate of force development (“RFD”) based on the max force., 'wherein the central processing device is configured to2. The measurement system ...

LOAD DETECTION SENSOR UNIT

A load detection sensor unit includes: a load detection sensor which includes a pair of electrodes facing each other with a predetermined gap interposed therebetween and a metal plate covering at least a part of one electrode; and a pressing member that includes a pressing portion pressed against a sheet cushion of a seat device and harder than the sheet cushion, and the pair of electrodes contacts each other when the metal plate is bent in a case in which the pressing portion presses a part of the metal plate. 1. A load detection sensor unit which is disposed below a sheet cushion , comprising:a load detection sensor which includes a pair of electrodes facing each other with a predetermined gap interposed therebetween and a metal plate covering at least a part of one electrode located near the sheet cushion among the pair of electrodes from the sheet cushion;a pressing member that includes a pressing portion pressed against the sheet cushion and harder than the sheet cushion,wherein the pair of electrodes contacts each other when the metal plate is bent in a case in which the pressing portion presses a part of the metal plate.2. The load detection sensor unit according to claim 1 ,wherein the pressing member further includes a pressure receiving surface pressed against the sheet cushion, andwherein an area of the pressure receiving surface is larger than an area in which the pressing portion contacts the metal plate.3. The load detection sensor unit according to claim 2 ,wherein the area of the pressure receiving surface is larger than an area of the one electrode.4. The load detection sensor unit according to claim 1 ,wherein the pressing portion contacts the metal plate while not being pressed against the sheet cushion.5. The load detection sensor unit according to claim 1 , further comprising:a first movement regulation member that regulates a relative movement between the pressing member and the metal plate in a plane direction of the metal plate.6. The load ...

Transparent Strain Sensors in an Electronic Device

One or more strain sensors can be included in an electronic device. Each strain sensor includes a strain sensitive element and one or more strain signal lines connected directly to the strain sensitive element. The strain sensor(s) are used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region or surface of the electronic device. A strain sensitive element is formed or processed to have a first gauge factor and the strain signal line(s) is formed or processed to have a different second gauge factor. Additionally or alternatively, a strain sensitive element is formed or processed to have a first conductance and the strain signal line(s) is formed or processed to have a different second conductance.

Systems and Methods for Detecting Running and Walking Strides and Foot Strikes

The present disclosure relates to systems and methods for measuring the location, the amplitude, and/or the direction of forces applied to a walking or running surface. An example system includes a pressure-sensitive sheet that extends along a first axis. The pressure-sensitive sheet includes a top surface and a bottom surface. A vertical force applied at a location along at least one of the top surface or the bottom surface forms an electrical path between the top surface and the bottom surface having a resistance, r f , that is inversely proportional to an amplitude of the vertical force. The system further includes read out circuitry configured to provide information indicative of the amplitude of the vertical force and the location of the vertical force along the first axis of the pressure-sensitive sheet.

PRESSURE SENSOR

In a pressure sensor, a pressure-sensitive layer faces a first electrode pattern and a second electrode pattern with a space interposed therebetween. The first electrode pattern includes a plurality of first electrode sections, a first interconnecting section that interconnects the plurality of first electrode sections, and a first wiring section that extends from a first end of the first interconnecting section. The second electrode pattern includes a plurality of second electrode sections disposed alternately with the first electrode sections, a second interconnecting section that interconnects the plurality of second electrode sections, and a second wiring section that extends from a second end of the second interconnecting section. The second wiring section extends such that the resistance of the conduction path between an output terminal of the first wiring section and an output terminal of the second wiring section is substantially the same for any adjacent pairs of the first electrode sections and the second electrode sections when the first electrode section and the second electrode section conduct with each other via the pressure-sensitive layer. 1. A pressure sensor comprising:a first insulating base material;a second insulating base material disposed with a space interposed between itself and the first insulating base material;a pressure-sensitive conductor formed on an entire surface of the first insulating base material on the second insulating base material side;a first electrode pattern formed on a surface of the second insulating base material on the first insulating base material side, the first electrode pattern including a plurality of first electrodes, a first interconnecting section having a first end and extending to connect first end portions of the plurality of first electrodes, and a first wiring section extending from the first end of the first interconnecting section; anda second electrode pattern formed on a surface of the second ...

LOAD DETECTION SENSOR AND LOAD DETECTION SENSOR UNIT

A load detection sensor of the invention includes: a first electrode sheet which includes first electrode and a first contact point a second electrode sheet which includes a second electrode and a second contact point a spacer which is disposed between the first electrode sheet and the second electrode sheet; one terminal A which is electrically connected to the first electrode and the other terminal B which is electrically connected to the first contact point A connection maintaining portion AP in which an electrical connection is maintained even when an external pressure is not applied thereto is formed by the first contact point and the second contact point and odd series of the switches SW electrically connected in series between one terminal A and the other terminal B are set. 1. A load detection sensor comprising:a first electrode sheet which includes at least one first electrode and a first contact point;a second electrode sheet which includes a second electrode facing the first electrode and a second contact point facing the first contact point and electrically connected to the second electrode;a spacer which is disposed between the first electrode sheet and the second electrode sheet and includes at least an opening formed between the first electrode and the second electrode and between the first contact point and the second contact point;one terminal which is electrically connected to the first electrode; andthe other terminal which is electrically connected to the first contact point,wherein a switch is formed by the first electrode and the second electrode and a connection maintaining portion in which an electrical connection is maintained even when an external pressure is not applied thereto is formed by the first contact point and the second contact point, andwherein odd series of the switches electrically connected in series between the one terminal and the other terminal are set.2. The load detection sensor according to claim 1 ,wherein a portion ...

Portable Strain Gauge for Improved Impulse and Peak Force Detection

Systems and methods for evaluating the performance of an athlete using a strain gauge is described. In some embodiments, the measurement system comprises a strain gauge and a central processing device. The strain gauge can include a power source, an inertial measurement unit (“IMU”) comprising a load cell, a microcontroller, and a wireless communication module. The strain gauge can be configured to output strain data at a rate of at least 1kHz and the central processing device can be configured to receive the strain data transmitted from the wireless communication module. 1receiving strain data at a rate of at least 1 kHz, wherein the strain data measures strain on a load cell in response to force exerted by a human on the load cell;converting the strain data into force measurements; anddetermining a rate of force development based on the force measurements.. A method for measuring physical exertion by a human, the method comprising: This application is a continuation of U.S. application Ser. No. 16/520,089, “Portable Strain Gauge for Improved Impulse and Peak Force Detection,” filed Jul. 23, 2019; which is a continuation-in-part of International Application No. PCT/NZ2019/005003, filed Jan. 23, 2019; which claims priority to New Zealand Application No. 739356, filed Jan. 23, 2018. All of the foregoing are incorporated by reference in their entirety.This invention relates to strain gauge apparatuses, systems, and methods, and in particular, to portable strain gauges for improved impulse and peak force detection.Unbalanced unilateral (single leg) horizontal force is linked to various type of injuries include hamstring, groin injury, hip flexor, knee ligament and lower back. Understanding unilateral horizontal force is also useful for training performance and monitoring. Such injuries commonly occur in athletes of many popular sport events in which high speed sprinting is frequently performed, including track and field events, football, and rugby. Injuries such as hip ...

PRESSURE SENSOR, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING PRESSURE SENSOR

In the pressure sensor, at least two resistors are simultaneously molded at the first mounting surface and the second mounting surface of the substrate component ensuring uniformity and consistency of resistance of all resistors, at least one of resistors is a strain sensing resistor, and the resistors are electrically connected to form a pressure measuring circuit. Connecting the pressure sensor to the desired panel to accurately detect the curved deformation amount of the panel. The resistors in a pressure measuring circuit are adjacently distributed, and the resistance value of the resistor changes with temperature at the same time, so that the influence of the temperature change on the pressure measuring circuit is very small, and the interference against the external environment is good. 1. A pressure sensor , comprising:a substrate component, the substrate component has a first mounting surface and a second mounting surface disposed away from each other; andat least one pressure measuring circuit, one of the at least one pressure measuring circuit has at least two resistors simultaneously molded on the substrate component, wherein at least one of the resistors is located on the first mounting surface, the other one of the resistors is located on the second mounting surface, and at least one of the resistors is a strain sensing resistor for detecting deflection deformation of the substrate component, the resistors in the pressure measuring circuit are adjacently distributed.2. The pressure sensor of claim 1 , wherein the substrate component includes a first substrate and a second substrate claim 1 , the first mounting surface is a side surface of the first substrate claim 1 , and the first substrate has a first bonding surface facing away from the first mounting surface claim 1 , the second mounting surface is a side surface of the second substrate claim 1 , and the second substrate has a second bonding surface facing away from the second mounting surface claim ...

Coated Nanofiller/Polymer Composite Sensor Network for Guided-Wave-Based Structural Health Monitoring

A method for forming a structural-strain sensor network on a structure is provided. The sensor network has plural nanocomposite sensing elements having high sensitivity, and can be quickly fabricated. The method comprises attaching a molding layer having openings onto the surface, and filling the openings with a coating material made of nanocomposite hybrid material. After immobilizing the coating material in the openings, the sensing elements are formed and the molding layer is removed. Electrical wires are formed on the surface such that two opposite electrodes are formed on each sensing element. The resistance between the two electrodes indicates a strain experienced. The sensor network finds applications in identifying a damaged location or an impact location on the structure for structural health monitoring. Voltage waveforms measured at the sensing elements are analyzed to estimate the damaged location or the impact location according to a guided-wave propagation model. 1. A method for forming a structural-strain sensor network on a surface of a structure , the sensor network comprising plural nanocomposite sensing elements dimensioned and located according to a pre-determined floor plan , all the sensing elements having a pre-determined thickness , the method comprising:obtaining a coating material used for forming the sensing elements, the coating material being a nanocomposite hybrid material under a semi-liquid state, wherein the nanocomposite hybrid material is a composite comprising nanofillers and a thermoplastic polymer;attaching a molding layer onto the surface, wherein the molding layer comprises plural openings dimensioned and located according to the floor plan, and the molding layer has a thickness substantially similar to the pre-determined thickness of all the sensing elements;after the molding layer is attached to the surface, filling the openings with the coating material;immobilizing the coating material that resides in the openings to form ...

SMART LOAD PIN FOR DRAW-WORKS

A smart load pin may be configured to measure a load on a hook of a draw-works system. The smart load pin may also include circuitry to convert the measured load to a digital value representative of the measured load, wherein the digital value represents the value of the measured load in engineering units and to transfer the digital value representative of the measured load to a control system located at a derrick. The data from the smart load pin may be used in adjusting, with a control system, operation of the draw-works system based, at least in part, on the received digital value representative of the measured load. 1. A method for controlling a draw-works system , comprising:measuring, with a load pin, a load on a hook of a draw-works system; converting, with a gauge of the load pin, the measure load to an analog representation of the measured load,', 'converting, with an analog-to-digital converter of the load pin, the analog representation to a digital value, and', 'compensating, with an MCU of the load pin, the digital value to account for variations in the measuring of the load; and, 'converting, with the load pin, the measured load to a digital value representative of the measured load, wherein the digital value represents the value of the measured load, the converting includingtransferring the digital value from the load pin to a control system located at a derrick.2. The method of claim 1 , further comprising adjusting claim 1 , with the control system claim 1 , operation of the draw-works system based claim 1 , at least in part claim 1 , on the digital value.3. The method of claim 1 , wherein the gauge is a transducer strain gauge.4. The method of claim 1 , wherein the measured load is represented as a tension value.5. The method of claim 1 , wherein the load pin is coupled to at least one of a traveling block claim 1 , a drilling hook claim 1 , or a top drive of the draw-works system.6. The method of claim 1 , wherein transferring includes transferring ...

Sensor information collecting apparatus

A sensor information collecting apparatus includes: a sensor module; a sensor amplifier that is configured to be in an operation stop mode in a static state; an acceleration sensor that outputs a first start signal; a controller that is configured to be in a sleep mode in the static state, and operates, when the first start signal is received from the acceleration sensor or when an interrupt signal is received from a realtime clock, to output a second start signal to allow the sensor amplifier to start to operate, control reading of the detection data of the sensor module, and store the read detection data in a memory; a power supply unit that is configured to be in the operation stop mode in the static state, and starts to operate by receiving the second start signal from the controller to supply the power supply voltage to the sensor amplifier; and a battery that supplies a battery voltage to the acceleration sensor, the controller, and the power supply unit.

Stress Distribution Measurement Device and Stress Distribution Measurement Method

A stress distribution measurement device includes: a first magnetostrictive sensor and a second magnetostrictive sensor each including an excitation coil that excites AC magnetism in a measurement target using alternating current, and a detection coil to which alternating current is induced due to the AC magnetism flowing in the measurement target; an excitation circuit that applies a first excitation voltage to the excitation coil of the first magnetostrictive sensor and applies a second excitation voltage to the excitation coil of the second magnetostrictive sensor, the second excitation voltage having a phase or a waveform different from the first excitation voltage; and a detection circuit that includes a first detector that performs synchronous detection of current flowing in the detection coil of the first magnetostrictive sensor based on the first excitation voltage and a second detector that performs synchronous detection of current flowing in the detection coil of the second magnetostrictive sensor based on the second excitation voltage.

STRAIN GAUGE AND SENSOR MODULE

The present strain gauge includes a substrate having flexibility; a resistor formed from a material containing at least one of chromium and nickel, on the substrate; a pair of wiring patterns formed on the substrate and electrically connected to both ends of the resistor; and a pair of electrodes formed on the substrate and electrically connected to the pair of wiring patterns, respectively. The wiring patterns include a first layer extending from the resistor, and a second layer having a lower resistance than the first layer and layered on the first layer. On the substrate, an electronic component mounting area is demarcated, on which an electronic component electrically connected to the electrodes is mounted. 1. A strain gauge comprising:a substrate formed of resin and having flexibility;a resistor formed from a material containing at least one of chromium and nickel, on the substrate;a pair of wiring patterns formed on the substrate and electrically connected to both ends of the resistor, anda pair of electrodes formed on the substrate and electrically connected to the pair of wiring patterns, respectively,wherein the wiring patterns include a first layer extending from the resistor, and a second layer having a lower resistance than the first layer and layered on the first layer, andwherein on the substrate, an electronic component mounting area is demarcated, on which an electronic component electrically connected to the electrodes is mounted.213-. (canceled)14. A strain gauge comprising:a substrate formed of resin and having flexibility;a functional layer formed from a metal, an alloy, or a metal compound, directly on one surface of the substrate;{'sub': '2', 'a resistor formed as a film containing Cr, CrN, and CrN into which an element contained in the functional layer is diffused, on one surface of the functional layer;'}a pair of wiring patterns formed on the one surface of the functional layer and electrically connected to both ends of the resistor; anda ...

DETECTING DEVICE

A detecting device includes: a bridge circuit having at least one sensing resistor whose resistance varies according to a physical quantity of a measurement object; a power supply configured to apply a voltage to the bridge circuit; an instrumentation amplifier configured to receive an output voltage of the bridge circuit from high-impedance input terminals, amplify the received output voltage, and output the amplified output voltage; and a physical quantity calculating unit configured to receive the output voltage amplified by the instrumentation amplifier and calculate the physical quantity based on the output voltage. The bridge circuit is connected to the instrumentation amplifier via a connector. 1. A detecting device comprising:a bridge circuit having a plurality of resistors including at least one sensing resistor whose resistance varies according to a physical quantity of a measurement object;a power supply configured to apply a voltage to the bridge circuit;an amplifier having high-impedance input terminals and configured to receive an output voltage of the bridge circuit from the input terminals, amplify the received output voltage and output the amplified output voltage;a physical quantity calculating unit configured to receive the output voltage amplified by the amplifier and calculate the physical quantity based on the output voltage;a first substrate on which the bridge circuit is provided; anda second substrate on which the amplifier is provided,wherein the bridge circuit is connected to the amplifier via a connector.2. The detecting device according to claim 1 , wherein the plurality of resistors in the bridge circuit are arranged at intervals that are equal to or less than a predetermined distance.3. The detecting device according to claim 1 , wherein wiring between the power supply and the resistors is arranged so that resistance between a negative electrode of the power supply and each of the resistors connected to the negative electrode is equal ...

Control apparatus, array-type sensor, sensor usage method, control method, and program

A control apparatus controls an array-type sensor. The control apparatus includes: a first selector/driver that is configured to select and drive one of a plurality of first lines; a second selector/driver that is configured to select and drive at least one of a plurality of second lines; a read/arithmetic circuit that is configured to read outputs of respective unit cells and perform a correction operation on the outputs; and a nonvolatile storage device that is configured to store reference data. The sensor outputs of the respective unit cells with respect to two or more reference inputs are stored as reference data in the nonvolatile storage device in a calibration mode, and a correction operation is performed on the sensor outputs of the respective unit cells using the stored reference data and results of the correction operation are output in a measurement mode.

Smart Carpet Systems And Methods Of Using Same For Monitoring Physical And Physiological Activities

Systems and methods for using a smart carpet to monitor a health status of an individual. The smart carpet has electronics and a plurality of pressure sensing areas for sensing plantar pressure of the individual. A monitoring computer comprising a processor and a memory including machine readable instructions processes carpet data. A first part of the smart carpet is scanned at a first frequency and a second part of the smart carpet is scanned at a second frequency greater than the first frequency. Plantar pressures are received from the second part of the carpet and the instructions evaluate the plantar pressures to determine at least one of a physical activity and a physiological activity. Where an emergency condition is determined, an alarm is communicated to monitoring personnel. 1. A health status monitoring system , comprising:a smart carpet having electronics and a grid of individually scannable resistance based pressure sensing nodes responsive to foot pressure of an individual on the smart carpet; and a processor;', scanning fewer than all of the nodes in a first area of the smart carpet where motion of the individual is not detected at a first sampling frequency, and scanning all nodes in a second area of the smart carpet where motion of the individual is detected at a second sampling frequency greater than the first sampling frequency to obtain carpet data;', 'determining plantar pressures from the second part; and', 'evaluating the plantar pressures in the carpet data to determine physiological activity of the individual., 'a memory communicatively coupled to the processor and storing machine readable instructions which, when executed by the processor, are capable of], 'a monitoring computer comprising2. The system of claim 1 , the machine readable instructions further comprising instructions executable by the processor to communicate the physiological activity to monitoring personnel.3. The system of claim 1 , the machine readable instructions further ...

Sensing system including a sensing membrane

In one general aspect, an apparatus can include a sensing membrane including a plurality of conductive fillers included in a matrix. The apparatus can include a plurality of electrical leads coupled to an outer portion of the sensing membrane where the conductive fillers have a volumetric percentage of less than 25% of the volume of the sensing membrane.

FIBER-REINFORCED COMPOSITE MATERIAL WITH A SENSOR ASSEMBLY FOR MONITORING THE STRUCTURE OF THE COMPOSITE MATERIAL

In a fiber-reinforced composite material () comprising a sensor array of a plurality of sensors for structural health monitoring of the composite material (), wherein electrical conducting paths () are incorporated into the composite material () and extend through the composite material, the electrical conducting paths are arranged in a first group and in a second group different from the first group, wherein the electrical conducting paths of the first group extend in the same direction, the electrical conducting paths of the second group also extend in the same direction and intersect the electrical conducting paths of the first group and thus form together with the conducting paths of the first group a network of n row conductors () and m column conductor (), and a signal processing means for monitoring at least one electrical characteristic of the conducting paths is provided, the state of the composite material () as well as damages, for example by fiber cracks, should be detected spatially resolved, and the reliability of the structural health monitoring in the case of damages of the composite material should be increased and the impact on the mechanical characteristics and the integrity of the structure of the composite material () should be reduced by reducing the number of external electrical terminals. This is achieved by arranging a diode () in each intersection area () of an electrical conducting path of the first group with an electrical conducting path of the second group, wherein the diode () establishes the connection between the row conductor () and the column conductor () so that a network is formed in the form of a diode matrix (). 11. A fiber-reinforced composite material () comprising a sensor array of a plurality of sensors for structural health monitoring of the composite material , wherein{'b': 4', '5', '1, 'electrical conducting paths (, ) are incorporated in the composite material () and extend through the composite material,'}the ...

Wheel hub assembly with internal load sensors

A hub assembly includes an inner rotatable hub having inboard and outboard axial ends, a radial flange extending outwardly from the outboard axial end and connectable with the wheel, an inner circumferential surface, and an opposing outer circumferential surface providing inboard and outboard inner races. An outer hub is disposed about the inner hub, connectable with the chassis and has inboard and outboard axial ends, an outer circumferential surface and an inner circumferential surface. The inner surface provides inboard and outboard outer races and a central surface section extending between the two outer races. First and second sets of rolling elements are disposed between the inner and outer races. One or more sensors are each disposed on the central surface section of the outer hub and are each configured to sense strain within the outer hub generated by the rolling elements.

DISPLAY CIRCUITRY INCLUDING STRAIN GAUGE

A system may include a display driven using display driving circuitry to present an image via pixels. The display driving circuitry may include a sensor core compatible with one or more strain sensing circuits. The same sensor core may be used by a control system of the display to sense a stress applied to a strained region of a display using a current divider sensing circuit and/or a Wheatstone bridge sensing circuit. 1. A display , comprising:an active area comprising a plurality of pixels, wherein each pixel of the plurality of pixels is configured to present a respective portion of an image frame;strain sensing circuitry disposed in a region of the active area; andsensor core circuitry configured to couple to the strain sensing circuitry to record sensed data indicative of an amount of stress applied to the region of the active area.2. The display of claim 1 , wherein the strain sensing circuitry includes a resistor ladder configured to generate an output in response to the stress applied to the region of the active area claim 1 , and wherein the strain sensing circuitry couples to the sensor core circuitry in response to a control signal.3. The display of claim 1 , wherein the strain sensing circuitry includes a Wheatstone bridge configured to generate an output in response to the stress applied to the region of the active area claim 1 , and wherein the strain sensing circuitry couples to the sensor core circuitry in response to a control signal.4. The display of claim 1 , comprising a controller communicatively coupled to the sensor core circuitry claim 1 , wherein the controller is configured to provide a control signal to the sensor core circuitry to couple the sensor core circuitry and the strain sensing circuitry.5. The display of claim 4 , wherein the control signal is provided in response to a determination of a type of the strain expected to be applied to the region.6. The display of claim 5 , wherein the determination is performed based at least in ...

DEFORMATION SENSOR, DEVICE FOR MEASURING LOAD OF WHEEL HUB OF VEHICLE, AND WHEEL ASSEMBLY OF VEHICLE

The present disclosure discloses a deformation sensor and device for measuring the load of a wheel hub of a vehicle, and an automobile. The deformation sensor includes: a metal lining fixed on the surface of the wheel hub, and a resistance strain gauge fixed on the metal lining The resistance strain gauge is fixed on the metal lining through a structural adhesive. 1. A deformation sensor for measuring the load of a wheel hub of a vehicle , comprising:a metal lining fixed on the surface of the wheel hub; anda resistance strain gauge fixed on the metal lining,wherein the resistance strain gauge is fixed on the metal lining through a structural adhesive.2. The deformation sensor for measuring the load of the wheel hub of the vehicle according to claim 1 , wherein the metal lining is made of a material of aluminum alloy.3. The deformation sensor for measuring the load of the wheel hub of the vehicle according to claim 2 , wherein the resistance strain gauge is a full-bridge resistance strain gauge.4. The deformation sensor for measuring the load of the wheel hub of the vehicle according to claim 3 , wherein the structural adhesive is sealing silica gel.5. A device for measuring the load of a wheel hub of a vehicle claim 3 , comprising a differential amplification circuit claim 3 , a processing component and a deformation sensor claim 3 , whereinthe deformation sensor comprises a metal lining fixed on the surface of the wheel hub, and a resistance strain gauge fixed on the metal lining, the resistance strain gauge being fixed on the metal lining through a structural adhesive;an input end of the differential amplification circuit is connected with the deformation sensor, and an output end of the differential amplification circuit is connected with the processing component.6. The device for measuring the load of the wheel hub of the vehicle according to claim 5 , wherein the processing component is a microcontroller unit (MCU).7. The device for measuring the load of the ...

DEVICE AND METHOD FOR EVALUATING SIGNALS OF LOAD CELLS WITH STRAIN GAUGES

A device and a method for evaluating signals from load cells with strain gauges (SG), which require electronic signal evaluation with very low offset voltages due to the small output signal. In order to be able to use inexpensive components as well, two different operating points of the SG are set in two consecutive measurements, each being determined by a single voltage reference. The voltage in the zero branch of the bridge circuit of the SG is amplified in a differential amplifier and digitised with an ADC. In this context, the reference for the ADC is derived from the operating point of the SG that is determined by the respective voltage reference. The digitised offset and the initial value of the load cell are calculated from the two measurement values in an arithmetic logic unit. 1. A device in which signals from load cells with strain gauges are evaluated , comprising:a load cell with one or more strain gauges for indicating, in the form of a voltage signal, a change in load on the load cell,at least one differential amplifier for amplifying the voltage signal from the load cell,an analogue/digital converter for converting the amplified signal into a digital signal, andan arithmetic logic unit for evaluation of the digital signal,{'b': 2', '6', '7', '5, 'wherein the one or more strain gauges () are operated at two different operating points that are determined by two voltage references (, ), and wherein the reference for the analogue/digital converter () is derived from the respective operating point.'}225. The device according to claim 1 , wherein an amplifier derives the supply voltage for the strain gauges () linearly from the respective voltage reference claim 1 , which also represents the reference for the analogue/digital converter ().3325. The device according to claim 1 , wherein a power source () derives the current through the strain gauges () linearly from the respective voltage reference claim 1 , which also represents the reference for the ...

Handheld Input Apparatus

Techniques for a handheld input apparatus are described. Generally, a handheld input apparatus can be used to provide input to various types of devices. According to various embodiments, a described handheld input apparatus includes a strain sensor for determining different load forces on a tip of the apparatus. According to various embodiments, a described handheld input apparatus includes components for determining an angular and/or rotational orientation of the apparatus relative to an input surface. Based on the different determined forces and/or orientation information, input characteristics of a handheld input apparatus can be controlled.

DEVICE FOR DETECTING STRAINS AND TRANSMITTING DETECTED DATA

A device for detecting strains and transmitting detected data that can be applied to the surface of a structure to be monitored or incorporated in the structure is provided. The device allows to reliably acquire and transmit data concerning the strains undergone by the structure. The device comprises a matrix made of an electrically insulating material, in which at least one or more strain sensors, an electronic circuit and an antenna electrically connected to one another are embedded. One or more strain sensors are made of a material selected from metals and metal alloys, electrically conductive resins and electrically conductive inks. 1. A device for detecting strains and transmitting detected data , which device comprises an electrically insulating matrix in which there are embedded at least:one or more strain sensors, made as resistive conductive elements, the dimensional variations of which bring about variations of electrical resistance;an electronic circuit electrically connected to the one or more sensors and adapted to detect the variations of electrical resistance;an antenna electrically connected to said electronic circuit,wherein the one or more strain sensors are made of a material selected from the group consisting of metals and metal alloys, electrically conductive resins and electrically conductive inks.2. The device according to claim 1 , wherein the one or more strain sensors are made of an electrically conductive resin.3. The device according to claim 1 , wherein the one or more strain sensors are made of an electrically conductive ink.4. The device according to claim 1 , wherein the electronic circuit and the antenna are made on one and the same printed circuit board.5. The device according to claim 4 , wherein the printed circuit board is made as a flexible printed circuit board.6. The device according to claim 1 , wherein a shielding layer is further embedded in said electrically insulating matrix.7. The device according to claim 6 , wherein ...

CURRENT SOURCE CIRCUIT AND DETECTION CIRCUIT

A current source circuit flowing an output current to at least one detection element including a first terminal to which a first voltage is supplied and a second terminal being connected to the current source circuit includes a reference resistance, a current mirror circuit including at least one first transistor and at least one second transistor, and a control circuit controlling a voltage of a common wire that is connected to a terminal provided at the first transistor and a terminal provided at the second transistor such that a voltage of a terminal provided at the reference resistance comes to be equal to a reference voltage. 1. A current source circuit flowing an output current to at least one detection element including a first terminal to which a first voltage is supplied and a second terminal being connected to the current source circuit , comprising:a reference resistance including a first terminal being connected to a first wire to which the first voltage is supplied; at least one first transistor including a first terminal and a first control terminal that are connected to a second terminal of the reference resistance; and', 'at least one second transistor including a second control terminal that is connected to the first control terminal,, 'a current mirror circuit including'}the current mirror circuit in which the second transistor includes the first terminal that is connected to the second terminal provided at the detection element, and in which the first transistor includes a second terminal that is connected to a second terminal provided at the second transistor; anda control circuit controlling a voltage of a common wire that is connected to the second terminal provided at the first transistor and the second terminal provided at the second transistor such that a voltage of the second terminal provided at the reference resistance comes to be equal to a reference voltage.2. The current source circuit according to claim 1 , whereinthe first transistor ...

TRANSDUCER ARRANGEMENT FOR MEASURING LOAD VARIATIONS

The invention relates to a transducer arrangement for converting a load variation into one or more electrical output signals. The transducer arrangement comprises at least one transducer element and an evaluation unit operatively connected to the transducer element. The transducer arrangement can be used amongst others, for healthcare applications, sport leisure activities, impact detection for safety applications in the automotive industry as well as for safety surveillance systems in the industry. 1. A transducer arrangement for converting a load variation into one or more electrical output signals , said transducer arrangement comprising:at least one transducer element, andan evaluation unit operatively connected to said transducer element,wherein said transducer element comprises a combination of a first transducer and a second transducer, and a first evaluation circuit associated to said first transducer for converting-a static loads or quasi-static load variations into a first output signal,', 'a second evaluation circuit associated to said second transducer for converting a highly dynamic load variations into a second output signal, and', 'an output circuit operatively connected to said first evaluation circuit and said second evaluation circuit for outputting at least one of said first electrical output signal and said second electrical output signal., 'wherein said evaluation unit comprises2. A transducer arrangement according to claim 1 , wherein at least one of said first transducer and said second transducer is foil-based.3. A transducer arrangement according to claim 1 , wherein said first transducer is a foil type pressure sensor comprising:a first carrier foil,a second carrier foil being kept apart from said first carrier foil by one or more spacers arranged between said first carrier foil and said second carrier foil, andat least two electrodes and a layer of pressure sensitive material arranged in an active area of said first transducer, said ...

Systems and Methods for Detecting Running and Walking Strides and Foot Strikes

The present disclosure relates to systems and methods for measuring the location, the amplitude, and/or the direction of forces applied to a walking or running surface. An example system includes a pressure-sensitive sheet that extends along a first axis. The pressure-sensitive sheet includes a top surface and a bottom surface. A vertical force applied at a location along at least one of the top surface or the bottom surface forms an electrical path between the top surface and the bottom surface having a resistance, rf, that is inversely proportional to an amplitude of the vertical force. The system further includes read out circuitry configured to provide information indicative of the amplitude of the vertical force and the location of the vertical force along the first axis of the pressure-sensitive sheet.

STRAIN GAUGE AND MULTI-AXIS FORCE SENSOR

Suppress a measurement error due to a change in an ambient temperature, in a strain gage for a multi-axis force sensor. The base member has a sensitive area configured to be attached to a flexure area of a flexure member and a non-sensitive area configured to be arranged outside of the flexure area, the flexure area being configured to be strained under a load; a first Wheatstone bridge circuit BC configured to detect a load applied to the flexure member in a first direction is constructed by a first-direction strain sensitive element X, X and a first-direction fixed resistance element RX, RX; a second Wheatstone bridge circuit BC configured to detect a load applied to the flexure member in a second direction orthogonal to the first direction is constructed by a second-direction strain sensitive element Y, Y and a second-direction fixed resistance element RY, RY; the first-direction strain sensitive element and the second-direction strain sensitive element are formed in the sensitive area and the first-direction fixed resistance element or the second-direction fixed resistance element is formed in the non-sensitive area and is formed of a material same as a material of the strain sensitive element. 1. A strain gage configured to be attached to a flexure member so as to be used in a detection of a load applied to the flexure member in a first direction with a first Wheatstone bridge circuit and a detection of a load applied to the flexure member in a second direction orthogonal to the first direction with a second Wheatstone bridge circuit , the flexure member being configured to be strained under a load , the strain gage comprising:a base member; anda circuit pattern formed on the base member,wherein the base member has a sensitive area configured to be attached to a flexure area of the flexure member and a non-sensitive area configured to be arranged outside of the flexure area, the flexure area being configured to be strained under the load;the circuit pattern ...

Area-efficient pressure sensing device

Circuits, methods, and apparatus that provide pressure sensing devices having a pressure sensor including a diaphragm supported by a frame. The pressure sensor may be mounted on an application-specific integrated circuit. A passage may extend through the application-specific integrated circuit from its underside to its topside where it may terminate in a cavity formed under the diaphragm. Circuit components may be formed in the second wafer portion and located in areas that are not under the first wafer portion. Circuit components may be formed in the second wafer in areas under the first wafer portion, such as under the frame or under the diaphragm. Circuit components may be formed in the second wafer such that they are partially under the first wafer portion, or partially under the frame or partially under the diaphragm.

Apparatus for Sensing User Input

An apparatus for sensing user input includes a first strain gauge grouping attached to an inner surface of a housing of a device, and a second strain gauge grouping attached to the inner surface of the housing. The apparatus includes a circuit coupled to the first and second strain gauge groupings, the circuit being configured to: (i) receive a first parameter signal from the first strain gauge grouping in response to user input that interacts with the housing over a location of the first strain gauge grouping, (ii) indicate that a first type of user input has been received in response to receipt of the first parameter signal, (iii) receive a second parameter signal from the second strain gauge grouping in response to user input that interacts with the housing over a location of the second strain gauge grouping, and (iv) indicate that a second type of user input has been received in response to receipt of the second parameter signal. 1. An apparatus for sensing user input provided on an exterior surface of an electronic device , comprising:a first strain gauge grouping attached to an inner surface of a housing of the electronic device;a second strain gauge grouping attached to the inner surface of the housing of the electronic device; and (i) receive a first parameter signal from the first strain gauge grouping in response to user input that interacts with the housing over a location of the first strain gauge grouping,', '(ii) indicate that a first type of user input has been received in response to receipt of the first parameter signal,', '(iii) receive a second parameter signal from the second strain gauge grouping in response to user input that interacts with the housing over a location of the second strain gauge grouping, and', '(iv) indicate that a second type of user input has been received in response to receipt of the second parameter signal., 'an electronic circuit electrically coupled to the first strain gauge grouping and the second strain gauge grouping, ...

SENSOR DEVICE

The detection range and the detection precision of a sensor device that makes use of the deformation of a viscoelastic elastomer are made variable. The sensor device comprises a magnetic viscoelastic elastomer containing electroconductive magnetic particles dispersed therein so as to demonstrate an elastic modulus that varies depending on a magnetic field applied thereto and an electric resistance in a prescribed direction that varies depending on a deformation thereof, electromagnets for applying a magnetic field that can be varied to the magnetic viscoelastic elastomer, a resistance detection circuit for detecting the electric resistance of the magnetic viscoelastic elastomer, and a control unit for computing at least one of a deformation state of the magnetic viscoelastic elastomer and a load applied to the magnetic viscoelastic elastomer according to a detection value of the resistance detection circuit and a magnitude of the magnetic field applied by the electromagnets. 1. A sensor device , comprising:a magnetic viscoelastic elastomer containing electroconductive magnetic particles dispersed therein so as to demonstrate an elastic modulus that varies depending on a magnetic field applied thereto and an electric resistance in a prescribed direction that varies depending on a deformation thereof;a magnetic field application unit for applying a magnetic field that can be varied to the magnetic viscoelastic elastomer;a resistance detection unit for detecting the electric resistance of the magnetic viscoelastic elastomer; anda computation unit for computing a load applied to the magnetic viscoelastic elastomer according to a detection value of the resistance detection unit and a magnitude of the magnetic field applied by the magnetic field application unit, the computation unit being configured such that the greater the magnitude of the magnetic field applied by the magnetic field application unit is, the greater the value of the load computed for a given detection ...

CALIBRATED LOAD CELL

A calibrated load cell includes a monolithic load beam having a first region, a second region on a distal end of the load beam from the first region for receiving a force from a load, and a third region arranged between the first and second regions, wherein the third region comprises a recess on one side of the load beam. A strain gauge is arranged in the recess for detecting a deformation of the third region from the load and for generating a strain gauge output signal proportional to the deformation of the third region. The load cell also includes a microcontroller arranged in the recess for receiving and processing the strain gauge output signal to produce a load cell output signal that represents the load on a load cell output cable. The microcontroller transforms the strain gauge output signal based on calibration parameters to produce the load cell output signal as a calibrated load cell output signal. 1. A calibrated load cell comprising:a monolithic load beam having a first region, a second region on a distal end of the load beam from the first region for receiving a force from a load, and a third region arranged between the first and second regions, wherein the third region comprises a recess on one side of the load beam;a strain gauge arranged in the recess for detecting a deformation of the third region from the load and for generating a strain gauge output signal proportional to the deformation of the third region;a load cell output cable for communicating a load cell output signal that represents the load; anda microcontroller arranged in the recess for receiving and processing the strain gauge output signal to produce the load cell output signal;wherein the recess having the strain gauge and microcontroller therein is encapsulated in a potting material.2. The calibrated load cell of wherein the load cell output signal is a current signal.3. The calibrated load cell of wherein the microcontroller transforms the strain gauge output signal based on ...

Display device and computer readable recording medium stored a program

A display device includes a display unit, a strain sensor which detects strain on an opposite side against a surface in which the display unit is provided, and a control unit which controls changing of displaying content for the display unit based on a detected level of the strain detected by the strain sensor.

Mouth Activated Controller

A mouth activated controller can be useful for operating equipment such as welders, drills and other equipment which may have traditionally utilized other controllers in the past, like foot controllers, etc. The mouth controller could operate in a live mode such as based on the pressure applied to a mouth pad, such as through teeth, or a step mode whereby a number of bites controls operation of the equipment for at least some embodiments. 1. A method of controlling equipment comprising the steps of:providing a pad, and retaining the pad intermediate two portions of body of a user in contact with the pad, said pad having a sensor connected thereto;selectively applying a pressure with the portions of the body of the user, wherein, when pressure is applied to the pad, a sensor input is generated and directed to a processor;said processor providing an output signal to thereby control performance of the equipment based on the selective application of the control signal by the user.2. The method of wherein the pad is a mouth pad located in the mouth of a user.3. The method of wherein the application of pressure to the mouth pad is through biting on the mouth pad.4. The method of wherein the mouth pad is provided in a protective sleeve.5. The method of wherein the sensor is a pressure sensor.6. The method of wherein the pressure sensor is selected from the group of a force sensitive resistor claim 5 , strain gauge claim 5 , and a sip-puff switch claim 5 , and an electro-mechanical switch.7. The method of wherein the processor has two modes of operation selected from a live mode whereby the output signal is proportional to the input signal claim 1 , and a step mode whereby a number of input signals is proportion to the output signal.8. The method of further comprising a switch claim 1 , said switch adjusting magnitude of the input signal based on a given pressure applied to the pad.9. The method of wherein the equipment is selected from the group of a welder and a drill ...

SYSTEM AND METHOD FOR MONITORING BODY MOVEMENT

A method for determining the flexion or extension of a joint of a human or animal subject, comprising: applying a plurality of strain gauges to the joint in a known configuration; applying a first inertial measurement unit, IMU, to each strain gauge; receiving strain data from each of the strain gauges; receiving motion data from each of the IMUs; and calculating the flexion or extension of the joint in dependence on the received strain data, motion data and the configuration of the strain gauges. 1. A method for determining the flexion or extension of a joint of a human or animal subject , comprising:applying a plurality of strain gauges to the joint in a known configuration;applying a first inertial measurement unit, IMU, to each strain gauge;receiving strain data from each of the strain gauges;receiving motion data from each of the IMUs; andcalculating the flexion or extension of the joint in dependence on the received strain data, motion data and the configuration of the strain gauges.2. The method of claim 1 , further comprising applying a second IMU to each strain gauge claim 1 , the first and second IMUs being applied to opposing ends of their respective strain gauges.3. The method of claim 1 , wherein the motion data received from the IMUs is adjusted in dependence on the data received from strain gauges.4. The method of claim 3 , wherein the motion data received from the IMUs is disregarded or down-weighted in the calculation of the flexion or extension in dependence on the data received from the strain gauges.5. The method of claim 1 , wherein the strain data is adjusted in dependence on the motion data received from the IMUs.6. The method of claim 5 , wherein the strain data is disregarded or down-weighted in the calculation of the flexion or extension in dependence on the motion data received from the IMUs.7. The method of claim 1 , wherein the known configuration comprises a stacked configuration.8. The method of claim 1 , wherein the known ...

FORCE LIMITING LATCH INDICATOR

A latch indicator apparatus for indicating a locked status of an attachment between a cable housing and a cable receptor. The latch indicator apparatus includes a latch indicator attached to a cable housing at an attachment point, a first resistive element having a first resistance, and is attached to the cable housing at the attachment point. The restive element of the latch indicator attaches to an indicator tab. The latch indicator includes an indicator window, which is positioned to indicate a locked status of the latch indicator based on the first resistance of the first resistive element. The latch indicator tests a connection between a cable housing and a cable housing by indicating a locked status. The locked status is indicated by exerting a first force on the indicator tab by pulling the indicator tab in a direction away from the connection between the cable housing and the cable receptor. 1. A latch indicator comprising:a cable housing that protects a cable; and a first resistive element having a first resistance attached to the cable housing at the attachment point,', 'an indicator tab attached to the resistive element, and', 'an indicator window positioned to indicate a locked status of a connection between the cable housing of the latch indicator based on the first resistance;, 'a latch indicator attached to the cable housing at an attachment point, wherein the latch indicator includes 'receiving an exerted first force on the indicator tab, wherein the exerted first force includes a pulling of the indicator tab in a direction away from the connection between the cable housing and cable receptor.', 'a first resistance of the first resistive element for testing the connection between a cable housing and a cable receptor to indicate a locked status by2. The latch indicator apparatus of claim 1 , further comprising:a handle attached to the cable housing at the attachment point.3. The latch indicator apparatus of claim 1 , wherein the latch indicator is ...

LOAD CELL

A load cell has a monolithic measuring body. The monolithic measuring body has: a force-supporting section; a force-introduction section; and a linkage section disposed between the force-supporting section and the force-introduction section. The monolithic measuring body has a longitudinal axis between a force-supporting-side axial end and a force-introduction-side axial end. The longitudinal axis is configured to extend in a horizontal direction. The monolithic measuring body further has, in the force-supporting section, at least one mounting hole for attachment of the monolithic measuring body, the axis of the at least one mounting hole extending in the horizontal direction. At least one strain gauge is configured to sense tensile or compressive deformation of the monolithic measuring body and is in a region of the linkage section on a top side or a bottom side of the monolithic measuring body, the at least one strain gauge being oriented in the horizontal direction. 1. A load cell comprising: a force-supporting section;', 'a force-introduction section; and', 'a linkage section disposed between the force-supporting section and the force-introduction section,', 'the monolithic measuring body having a longitudinal axis between a force-supporting-side axial end and a force-introduction-side axial end,', 'the longitudinal axis being configured to extend in a horizontal direction,', 'the monolithic measuring body further comprising, in the force-supporting section, at least one mounting hole for attachment of the monolithic measuring body, the axis of the at least one mounting hole extending in the horizontal direction; and', 'at least one strain gauge configured to sense tensile or compressive deformation of the monolithic measuring body and disposed in a region of the linkage section on a top side or a bottom side of the monolithic measuring body, the at least one strain gauge being oriented in the horizontal direction., 'a monolithic measuring body comprising2. The ...

EMBROIDERED STRAIN SENSING ELEMENTS

A deformation sensing fabric comprises a fabric substrate comprising a first fabric layer and a first conductive element woven into the first fabric layer. The first conductive element outputs a first instrumented signal, responsive to an applied stimulus signal, indicative of a measure of change in an electrical property of the first conductive element in response to a strain applied to the fabric substrate along a long-axis of the first conductive element. The first conductive element is instrumented by a measurement system which stimulates the first conductive element and measures an electrical property of the first conductive element. 1. A deformation sensing fabric comprising:a fabric substrate comprising a first fabric layer; anda first conductive element woven into the first fabric layer, and configured to output a first instrumented signal, responsive to an applied stimulus signal, indicative of a measure of change in an electrical property of the first conductive element in response to a strain applied to the fabric substrate along a long-axis of the first conductive element.2. The deformation sensing fabric of claim 1 , wherein:the first conductive element is configured to form a first strain gauge and the first instrumented signal, responsive to the applied stimulus signal, is indicative of a change in resistance of the first strain gauge in response to a strain applied to the fabric substrate along a length of the first strain gauge.3. The deformation sensing fabric of claim 2 , wherein:the first fabric layer comprises an electrically insulating fiber material;the first strain gauge comprises an electrically conductive elastic fiber material interwoven amidst threads of the electrically insulating fiber material.4. The deformation sensing fabric of claim 3 , wherein the electrically conductive elastic fiber material is encapsulated by an electrically insulating elastic fiber material coating configured to be interwoven amidst threads of the electrically ...

Force Sensor Array

This invention discloses a force sensor array, characterized in that it comprises: a circuit board, a plurality of gas pressure sensors arranged on the circuit board, and an energy-absorbing film layer covering the gas nozzle of each gas pressure sensor; the said energy-absorbing film layer has a certain elastic deformability, and can convert impact kinetic energy into heat energy. Through the provision of the energy-absorbing film layer, circuit board and other structures, when pressure is applied slowly, the energy-absorbing film layer of this invention shows the characteristics of solid to transfer pressure; different gas pressure sensors sense different pressure values during stress. The circuit board collects the pressure values fed back by the gas pressure sensors to show the spatial distribution of stress. When impact bursting force is applied to the energy-absorbing film layer, the energy-absorbing film layer converts kinetic energy into heat energy for dissipation, which can buffer impact and absorb more than 95% of the impact energy to improve the bursting resistance of the entire array. In addition, it is cost-effective. 1. A force sensor array , characterized in that it comprises: a circuit board , a plurality of gas pressure sensors arranged on the circuit board , and an energy-absorbing film layer covering the gas nozzle of each gas pressure sensor; the said energy-absorbing film layer has a certain elastic deformability , and can convert impact kinetic energy into heat energy.2. A force sensor array according to claim 1 , characterized in that the said gas pressure sensor is a planar pressure sensor claim 1 , and an airflow hole corresponding to the gas nozzle of the gas pressure sensor is provided on the circuit board.3. A force sensor array according to claim 2 , characterized in that it includes a housing claim 2 , a groove is provided on the housing claim 2 , and the said circuit board is suspended at the bottom of the groove through a column.4. A ...

DOUBLY INTERLACED SENSOR ARRAY AND METHOD TO SUPPORT LOW POWER COUNTING AND IDENTIFICATION

Systems and methods for providing low-power sensing, identification, and sweep detection for items on a sensor mat are provided. Item detection sensors are provided in grid on a sensor mat. A first subset of the item detection sensors are sensed at a first time, and a second subset of the item detection sensors are sensed at a second time. The item detection sensors of the first and second subsets are chosen such that they span the surface of the sensor mat, and so that the sensors of the chosen subsets include all of the sensors of the mat after multiple sensing steps have been completed. 1. A sensor mat comprising:a first substrate configured to form a lower portion of the mat;a second substrate configured to form an upper portion of the mat;a first plurality of electrical traces positioned between the first substrate and the second substrate, each of the first plurality of electrical traces being substantially parallel to each other of the first plurality of electrical traces;a second plurality of electrical traces positioned between the first substrate and the second substrate, each of the second plurality of electrical traces being substantially parallel to each other of the second plurality of electrical traces,the first plurality of electrical traces and the second plurality of electrical traces being laid out such that each of the first plurality of electrical traces at least one of overlaps and passes under each of the second plurality of electrical traces, the first plurality of electrical traces and the second plurality of electrical traces being further laid out such that each of the second plurality of electrical traces at least one of overlaps and passes under each of the first plurality of electrical traces;a drive circuit communicatively coupled to each of the first plurality of electrical traces and the second plurality of electrical traces, the drive circuit including a first plurality of banks configured to interface the first plurality of ...

Pressing Force Sensor

A pressing force sensor that includes a sensor element configured with a piezoelectric film, a lead terminal for connection to an external circuit, a wiring conductor which connects pressing force detection electrodes and the lead terminal, and a flexible printed circuit board which withstands solder reflow temperatures. The flexible printed circuit board has the pressing force detection electrodes formed on a first principal surface thereof, and is folded via a folding line while the first principal surface faces inward. The sensor element is deflected by a pressing force applied to a second principal surface which faces outward and is in a first area of the flexible printed circuit board which is on one side with respect to the folding line, and a signal corresponding to the pressing force is thus taken out from the pressing force detection electrodes. 1. A pressing force sensor comprising:a sensor element including pressing force detection electrodes;a lead terminal for connection to an external circuit;a wiring conductor which connects the pressing force detection electrode and the lead terminal; anda flexible printed circuit board having enough heat resistance to withstand solder reflow temperatures,wherein the pressing force detection electrodes, the lead terminal, and the wiring conductor are disposed on the flexible printed circuit board,at least the pressing force detection electrodes and the wiring conductor are disposed on a first principal surface of the flexible printed circuit board,the flexible printed circuit board is folded via a folding line, such that the first principal surface faces inward and such that the flexible printed circuit board holds the sensor element therebetween, andthe sensor element is deflected by a pressing force applied to a second principal surface which faces outward and which is in a first area on one side of the folded flexible printed circuit board with respect to the folding line, and due to the deflection of the sensor ...

INTERACTION FORCE DETECTION APPARATUS

An interaction force detection apparatus includes a sensor, a driving element, a moving element, and a connecting element. The connecting element is connected to the driving element and the sensor. The driving element is adapted to interact with the moving element, so as to generate a pair of forces. The pair of forces includes a first force and a second force, and a magnitude of the first force is equal to that of the second force. The sensor detects the first force exerted on the driving element, and the second force is exerted on the moving element to generate a movement. 1. An interaction force detection apparatus , comprising:a sensor;a driving element;a moving element; anda connecting element connecting the driving element and the sensor, wherein the sensor is fixed to the driving element through the connecting element, wherein the sensor is separated from the moving element by the driving element, the driving element is adapted to interact with the moving element to generate a pair of forces comprising a first force and a second force, a magnitude of the first force is equal to that of the second force, the sensor detects the first force exerted on the driving element, and the second force is exerted on the moving element to generate a movement.2. The interaction force detection apparatus of claim 1 , wherein the sensor comprises at least one elastic element claim 1 , a stiffness of the at least one elastic element is less than a stiffness of the connecting element and is less than a stiffness of the driving element.3. The interaction force detection apparatus of claim 1 , further comprising a fixed base claim 1 , wherein the sensor connects the fixed base and the connecting element claim 1 , wherein the sensor is between the fixed base and the driving element.4. The interaction force detection apparatus of claim 3 , further comprising an integrated circuit chip disposed in an accommodating space of the sensor.5. The interaction force detection apparatus of ...

COAXIAL CABLE SENSOR DEVICE FOR DISTRIBUTED STRAIN MEASUREMENT AND SHAPE SENSING APPLICATIONS

The present disclosure provides a novel distributed coaxial cable strain sensor that can measure a strain profile over the entire length of a cable. Individual strain sensing elements are constructed using Fabry-Perot interferometers, coaxial cable Bragg gratings, or other reflectometry-based sensing structures. By assembling three or more strain sensors together in a bundle, a coaxial cable shape sensing device can be constructed which is capable of accurate three dimensional position measurement. 1. A coaxial cable for distributed strain measurement comprising:an inner conductor extending along a length of the coaxial cable;an outer conductor extending along a length of the coaxial cable,an insulating material disposed between the inner conductor and the outer conductor and extending along a length of the coaxial cable, anda plurality of sensing elements formed along a length of the coaxial cable,wherein each of said sensing elements is constructed from one or more reflectors formed in the coaxial cable, andwherein each of said reflectors comprises a physical impedance discontinuity in one or more of said inner conductor, said outer conductor and said insulating material.2. The coaxial cable of wherein said sensing element is selected from the group consisting of Fabry-Perot interferometers claim 1 , coaxial cable Bragg gratings claim 1 , coiled coaxial cable resonator claim 1 , and other reflectometry-based sensing structures claim 1 ,3. The coaxial cable of wherein each of said Fabry-Perot cavities is formed by a pair of spaced reflectors formed in the coaxial cable.4. The coaxial cable of wherein said Fabry-Perot cavities are of equal or unequal length.5. The coaxial cable of wherein each of the said coaxial cable Bragg gratings is formed by a plurality of spaced reflectors formed in the coaxial cable.6. A coaxial cable strain sensor device for distributed strain measurement comprising:a coaxial cable including an inner conductor extending along a length of the ...

Strain Sensors in an Electronic Device

One or more strain sensors can be included in an electronic device. Each strain sensor includes a strain sensitive element and one or more strain signal lines connected directly to the strain sensitive element. The strain sensor(s) are used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region or surface of the electronic device. A strain sensitive element is formed or processed to have a first gauge factor and the strain signal line(s) is formed or processed to have a different second gauge factor. Additionally or alternatively, a strain sensitive element is formed or processed to have a first conductance and the strain signal line(s) is formed or processed to have a different second conductance. 124-. (canceled)25. A strain sensor positioned in a display stack of an electronic device , the strain sensor comprising:a strain sensitive element comprised of a first conductive material having a first gauge factor;a strain signal line connected to the strain sensitive element and comprised of a different second conductive material having a second gauge factor, wherein the first gauge factor is greater than the second gauge factor.26. The strain sensor of claim 25 , wherein the first conductive material has a first electrical resistance and the second conductive material a second electrical resistance and the first electrical resistance is greater than the second electrical resistance.27. The strain sensor of claim 25 , wherein the first conductive material and the second conductive material each comprise a conducting oxide film.28. The strain sensor of claim 27 , wherein the first conductive material comprises one of a gallium doped zinc oxide film and an aluminum doped zinc oxide film.29. The strain sensor of claim 27 , wherein the second conductive material comprises an indium tin oxide film.30. The strain sensor of claim 27 , wherein the first conductive material comprises a multi-layer ...

Force/Torque Sensor Temperature Compensation

Strain gages on a robotic force/torque sensor are individually temperature compensated prior to resolving the gage outputs to estimate force and torque loads on the sensor. Thermal sensors are mounted proximate each strain gage, and the initial gate and thermal sensor outputs at a known load and temperature are obtained. The force/torque sensor then undergoes warming, and strain gage and thermal sensor outputs are again obtained. These gage and thermal sensor outputs are processed to calculate coefficients to a temperature compensation equation, such as by using a least squares algorithm. Each strain gage output is compensated using the temperature compensation equation, and the temperature-compensated outputs of the strain gages are then combined to resolve temperature-compensated force and torque values. 1. A temperature-compensated method of operating a robotic force/torque sensor having a Tool Adapter Plate (TAP) operative to be connected to a first object and a Mounting Adapter Plate (MAP) operative to be connected to a second object , the force/torque sensor being operative to measure the direction and magnitude of force and torque between the first and second objects , the method comprising:obtaining initial outputs of strain gages affixed to members connecting the MAP and TAP and thermal sensors measuring the temperature of the MAP and TAP, at a known load and temperature;obtaining strain gage and thermal sensor outputs after the sensor undergoes a temperature change;calculating coefficients to a per-gage temperature compensation equation based on the initial outputs and outputs after the temperature change;compensating each strain gage output using the temperature compensation equation; andcombining the temperature-compensated outputs of all strain gages to resolve temperature-compensated force and torque values.2. The method of wherein:the thermal sensors measure a thermal gradient between the MAP and TAP of the robotic force/torque sensor; andthe per-gage ...

LOAD CELL, WEIGHING NETWORK AND MONITORING METHOD

A load cell has four resistive strain gauges, a digital-to-analog conversion circuit and a signal processor. The signal processor can output a real-time load stress value Fand a real-time state information matrix S. A weighing network is made of a load cell array composed of a plurality of the load cells, a collection device for collecting external information, and a control terminal. Further proposed in the present invention is a monitoring method for a weighing network, applied to the aforementioned weighing network, wherein the control terminal collects real-time external information, and a real-time load stress value Fand a real-time state information matrix Sfor each load cell in real time; and compares the real-time external information, and the real-time load stress value Fand the real-time state information matrix Sfor each load cell with data stored in a weighing process database to monitor the state of the weighing network. 1. A load cell , comprising:four strain gauges, each of which is mounted on a surface of a cell deformation part and located in a force measurement region of the cell deformation part, the four strain gauges connected to form a Wheatstone bridge and to also form a strain bridge with a temperature sensing element;{'sub': ref', 'out', 'out, 'a digital-to-analog conversion chip circuit, having a reference voltage end (V), a grounding end (GND), a plurality of input channels and a digital output end (D), wherein the digital-to-analog conversion circuit is arranged to incent the strain bridge via the reference voltage end (Vref) and the grounding end (GND), to receive analog feedback signals of the strain bridge respectively via the plurality of input channels, and to output digital feedback signals via the digital output end (D); and'}{'sub': 'out', 'claim-text': a load stress calculation unit, configured to calculate a load stress value from the digital feedback signals; and', 'a state information matrix calculation unit, configured to ...

A BODY FOR HOLDING A FIBER OPTIC STRAIN SENSOR, A SYSTEM INCLUDING THE BODY, AND A METHOD FOR DETERMINING STRAIN IN AN OBJECT

A device and method for holding a strain sensor for determining strain in an object includes a body. The body of the device includes a surface mountable frame, the frame being plate-shaped and including: at least two anchor portions for enabling attachment to a surface of the object, a strain sensitive region in an intermediate position between a first anchor portion and a second anchor portion of the at least two anchor portions, a sensor connection portion configured to hold at least one strain sensor for enabling attachment of the strain sensor to the frame in the strain sensitive region, and at least one elastic portion arranged in the strain sensitive region, the elastic portion being formed by a spring structure configured to modify a strain transmission from the object to the sensor connection portion of the frame. Preferably, the device holds a fiber optic strain sensor. 1. A body for holding a fiber optic strain sensor for determining strain in an object , the body comprising a surface mountable frame , the frame being plate-shaped and including:at least two anchor portions for enabling attachment to a surface of the object,a strain sensitive region in an intermediate position between a first anchor portion and a second anchor portion of the at least two anchor portions,a sensor connection portion configured to hold at least one strain sensor for enabling attachment of the strain sensor to the frame in the strain sensitive region, andat least one elastic portion arranged in the strain sensitive region, the elastic portion being formed by a spring structure configured to modify a strain transmission from the object to the sensor connection portion of the frame.2. The body according to claim 1 , wherein at least one elastic portion is arranged in series between the strain sensor and one of the at least two anchor portions.3. The body according to claim 1 , wherein at least one elastic portion is arranged parallel to the strain sensor.4. The body according to ...

PRESSURE MEASUREMENT APPARATUS AND PROGRAM FOR MEASURING PRESSURE

A pressure measurement device includes a platen, a pressure sensor, a signal acquisition section, and a data processing section. The pressure sensor includes a plurality of pressure-sensitive points arranged on the platen. The signal acquisition section is configured to acquire measurement data that is obtained when a measurement object in contact with a surface of the platen passes over the pressure sensor a plurality of times. The measurement object moves relative to the platen and along a circular orbit on the platen. The data processing section is configured to calculate periods in each of which the measurement object passes over the pressure sensor and to acquire period data for each of the periods from the measurement data. 1. A pressure measurement device comprising:a platen;a pressure sensor including a plurality of pressure-sensitive points arranged on the platen;a signal acquisition section configured to acquire measurement data obtained when a measurement object in contact with a surface of the platen passes over the pressure sensor a plurality of times, the measurement object moving relative to the platen and along a circular orbit on the platen; anda data processing section configured to calculate periods in each of which the measurement object passes over the pressure sensor, and configured to acquire period data for each of the periods from the measurement data.2. The pressure measurement device according to claim 1 , wherein the pressure-sensitive points are arranged linearly.3. The pressure measurement device according to or claim 1 , comprisinga coating film covering a surface of the pressure sensor, the coating film having a surface area larger than a surface area of a surface of the measurement object, the surface of the measurement object being in contact with the platen.4. A non-transitory computer-readable medium having computer-executable instructions for performing a method of measuring pressure claim 1 , the method comprising:acquiring ...

FORCE/TORQUE SENSOR HAVING REDUNDANT INSTRUMENTATION AND OPERATIVE TO DETECT FAULTS

A force/torque sensor includes a number n of deformable beams connecting the TAP to the MAP, wherein n≧4. At least four of the n deformable beams are instrumented with strain gages affixed to surfaces of the beams, such that each beam outputs two gage signals. The eight gage signals are grouped into four sets of six gage signals, such that each set includes the gage signals from three of the four instrumented beams. Each set of six gage signals is multiplied by a calibration matrix to yield a set of six force and torque values. The four sets of force and torque values are compared. If one set disagrees with the other three by greater than a predetermined tolerance, a sensor fault is signaled. 1. A force/torque sensor comprising:a Tool Adapter Plate (TAP) operative to be connected to a first object:a Mounting Adapter Plate (MAP) operative to be connected to a second object;a number n of deformable beams connecting the TAP to the MAP, wherein n≧4;instrumentation comprising strain gages affixed to surfaces of four of the n deformable beams; and separately resolve the direction and magnitude of force and torque between the first and second objects, in response to electrical signals from strain gages on four different combinations of three of the four instrumented beams,', 'compare the resolved force and torque outputs of the four resolutions; and', 'signal a fault if at least one of the four force/torque outputs differs from the others by more than a predetermined tolerance., 'a measurement circuit operative to'}2. The sensor of whereinthe first object is a robotic tool or a mechanical coupling to a robotic tool; andthe second object is a robotic arm or a mechanical coupling to a robotic arm.3. The sensor of wherein the measurement circuit operative is further operative to output the unique resolved force and torque outputs if claim 1 , in the comparison step claim 1 , three of the four resolutions agree with in predetermined tolerance and one resolution disagrees.4. ...

DETECTION OF STRAIN DIRECTION IN AN INTEGRATED CIRCUIT

Circuitry for determining the direction of incidence of an acoustic signal in an integrated circuit. An electronic circuit includes a packaged integrated circuit. The packaged integrated circuit includes a die. The die includes a plurality of acoustic transducers spaced apart on the die, and a measurement circuit. The plurality of acoustic transducers includes at least a first acoustic transducer and a second acoustic transducer. The measurement circuit is coupled to at least the first acoustic transducer and the second acoustic transducer. The measurement circuit is configured to determine for the first acoustic transducer, a first time at which the first acoustic transducer detects an acoustic signal propagating in the die; and determine for the second acoustic transducer, a second time at which the second acoustic transducer detects the acoustic signal propagating in the die. 1. An electronic circuit , comprising: a plurality of acoustic transducers spaced apart on the die, including at least a first acoustic transducer and a second acoustic transducer;', determine for the first acoustic transducer, a first time at which the first acoustic transducer detects an acoustic signal propagating in the die; and', 'determine for the second acoustic transducer, a second time at which the second acoustic transducer detects the acoustic signal propagating in the die., 'a measurement circuit coupled to at least the first acoustic transducer and the second acoustic transducer, the measurement circuit configured to], 'a die comprising, 'a packaged integrated circuit, comprising2. The electronic circuit of claim 1 , wherein the measurement circuit comprises:a first comparator, coupled to the first acoustic transducer, to compare an output of the first acoustic transducer to a threshold voltage; anda second comparator, coupled to the second acoustic transducer, to compare an output of the second acoustic transducer to the threshold voltage.3. The electronic circuit of claim 2 , ...

MODELING NONLINEAR CHARACTERISTICS OF MATERIALS FOR SENSOR APPLICATIONS

Methods and apparatus are described that employ machine learning techniques to model nonlinear properties of materials employed in sensor devices and systems to improve the operation of such devices and systems. 1. A device , comprising:a sensor, the sensor including a component characterized by a nonlinear characteristic; andsensor circuitry configured to receive a sensor signal from the sensor, the sensor signal representing a force on the sensor, the sensor circuitry including memory having sensor model data stored therein, the sensor model data representing a sensor model, the sensor model representing sensor behavior that reflects the nonlinear characteristic of the component, the sensor circuitry being configured to generate a force value based on the sensor signal and the sensor model data, the force value representing the force on the sensor.2. The device of claim 1 , wherein the sensor model represents the sensor behavior over one or more of a range of temperature claim 1 , a range of pressure claim 1 , or a range of humidity.3. The device of claim 1 , wherein the sensor model data are stored in a table that relates digital representations of the sensor signal to force values claim 1 , and wherein the sensor circuitry is configured to generate the force value by selecting the force value from the table based on at least one digital representation of the sensor signal.4. The device of claim 1 , wherein the sensor circuitry is configured to generate a plurality of digital values based on the sensor signal over time claim 1 , and wherein the sensor circuitry is configured to generate the force value based on a current digital value of the plurality of digital values and a previous digital value of the plurality of digital values.5. The device of claim 4 , wherein the previous digital value corresponds to a most recent time at which a previous force above a specified threshold was exerted on the sensor.6. The device of claim 4 , wherein the sensor circuitry is ...

SELF-CONFIGURING MODULAR SURFACE SENSORS ANALYTICS SYSTEM

In some embodiments, a method of controlling a self-configuring sensor array includes receiving a plurality of contact signals from the plurality of respective contact sensors. In some embodiments, the method further includes generating one or more paths based on a temporal relationship amongst the plurality of contact signals. In some embodiments, the generating is further based on a spatial relationship between the respective contact sensors. In some embodiments, the method further includes generating a first entity profile based on the one or more paths. In some embodiments, the method includes generating a tile map based on a plurality of respective tile profiles received by a master control device. 1. A method of environmental management , comprising:receiving, at a self-configuring surface sensor array, the self-configuring surface sensor array comprising a first sensor tile and a master control device, the first sensor tile further comprising a first plurality of contact sensors, a first contact signal originating at a first sensor of the first plurality of contact sensors;receiving a second contact signal from a second sensor of the first plurality of contact sensors;generating a first path with the first contact signal and the second contact signal based on a temporal relationship between the first contact signal and the second contact signal, and a spatial relationship between the first sensor and the second sensor;receiving a third contact signal from a third sensor of the first plurality of contact sensors;receiving a fourth contact signal originating at a fourth sensor of the first plurality of contact sensors;generating a second path with the third contact signal and the fourth contact signal based on a temporal relationship between the third contact signal and the fourth contact signal, and a spatial relationship between the third sensor and the fourth sensor; andgenerating a first entity profile based on the first path and the second path.2. The ...

BENDABLE DISPLAY APPARATUS

A display apparatus includes a substrate including a first area, a second area, and a bending area, the bending area disposed between the first area and the second area and bending about a bending axis running along a first direction; a first piezoelectric device disposed over the bending area; and a pressure sensor. The first piezoelectric device is configured to contract or expand according to a pressure variation sensed by the pressure sensor. 1. A display apparatus , comprising:a substrate comprising a first area, a second area, and a bending area, the bending area disposed between the first area and the second area and extending in a first direction;a first piezoelectric device disposed over the bending area; anda pressure sensor,wherein the first piezoelectric device is configured to contract or expand according a pressure variation sensed by the pressure sensor.2. The display apparatus of claim 1 , wherein the pressure sensor comprises a strain gauge.3. The display apparatus of claim 1 , further comprising a first wire electrically connected to the first piezoelectric device claim 1 ,wherein the pressure sensor senses the pressure variation depending on a resistance variation of the first wire.4. The display apparatus of claim 1 , wherein the first piezoelectric device extends primarily in the first direction claim 1 , and the display apparatus further comprises:a first wire disposed at a first side of the first piezoelectric device and extending primarily in a second direction that crosses the first direction, the first wire being electrically connected to the first piezoelectric device and extending primarily in the first direction; anda second wire disposed at a second side of the first piezoelectric device, wherein the second side is opposite to the first side, the second wire being electrically connected to the first piezoelectric device and extending in the first direction.5. The display apparatus of claim 4 , wherein each of the first wire and the ...

Method and system for determining the weight and centre of gravity of a structure

A method and system for determining the weight and at least a first coordinate of the center of gravity of a structure such as a vehicle, in particular, an aircraft.

METHOD AND HOISTING DEVICE

The invention relates to a method for monitoring condition of a rope of a hoisting device, which rope comprises one or more load bearing members oriented to extend parallel with longitudinal direction of the rope throughout the length thereof. The method comprises measuring strains of one or more portions of a load bearing member of the rope; and comparing the measured strains of one or more portions of a load bearing member of the rope with at least one reference. The invention also relates to a hoisting device implementing the method. 1. Method for monitoring condition of a rope of a hoisting device , which rope comprises one or more load bearing members oriented to extend parallel with longitudinal direction of the rope throughout the length thereof , wherein the method comprisesmeasuring strains of one or more portions of a load bearing member of the rope; andcomparing the measured strains of one or more portions of a load bearing member of the rope with at least one reference.2. A method according to claim 1 , wherein strain of each said portion is measured when the portion is arched.3. A method according to claim 1 , wherein strain of each said portion is measured when the portion is arched claim 1 , and the measuring point is a point of the portion where the portion substantially arcs claim 1 , preferably with diameter less than 1.5 meters.4. A method according to claim 1 , wherein strain of each said portion is measured when the portion rests on a circumference of a rope wheel of the hoisting device.5. A method according to claim 1 , wherein each said load bearing member is made of composite material comprising reinforcing fibers embedded in polymer matrix claim 1 , said reinforcing fibers preferably being carbon fibers or glass fibers.6. A method according to claim 1 , wherein the rope is substantially larger in its width-direction than thickness-direction.7. A method according to claim 1 , wherein said measuring is performed by aid of one or more strain ...

CARBON NANOTUBE-BASED MULTI-SENSOR

Carbon nanotube-based multi-sensors for packaging applications and methods to form the carbon nanotube-based multi-sensors are capable of simultaneously measuring at least two measurands including temperature, strain, and humidity via changes in its electrical properties. 111-. (canceled)12. A carbon nanotube-based multi-sensor for independently measuring temperature , strain , and relative humidity responses in a chip package comprising:a laminate substrate having a plurality of electrical circuits disposed therein;a chip having a first surface mounted on the laminate substrate and electrically connected to electrical circuits disposed in laminate substrate; andan underfill material disposed between the chip and the laminate substrate,wherein a selected one or both of the chip and the laminate substrate further comprises a passivation layer thereon,wherein the carbon nanotube-based multi-sensor is disposed on the passivation layer and comprises a carbon nanotube mesh pattern encapsulated in a moisture permeable polymer matrix with terminal ends exposed;electrodes coupled to the terminal ends, anda processor for treating a signal generated from the carbon nanotube-based multi-sensors when a voltage is applied to the electrodes, wherein the processor is configured to independently measure a variation in an electrical property at a defined frequency as a function of the temperature, strain and relative humidity.131. The carbon nanotube based multi-sensor of claim , wherein the passivation layer is a photosensitive polyimide.141. The carbon nanotube based multi-sensor of claim , wherein the variation in the electrical property comprises a variation of an impedance output by the carbon nanotube-based multi-sensor as a function of the temperature response , the strain response and/or the humidity response.1520-. (canceled) The present invention relates to carbon nanotube-based multi-sensors, and more particularly, combined high sensitivity strain, temperature and/or ...

CARBON NANOTUBE-BASED MULTI-SENSOR

Carbon nanotube-based multi-sensors for packaging applications and methods to form the carbon nanotube-based multi-sensors are capable of simultaneously measuring at least two measurands including temperature, strain, and humidity via changes in its electrical properties. 1. A method of forming a carbon nanotube-based multi-sensor for a chip package , the method comprising:spray coating a layer of a carbon nanotube dispersion onto a surface of a chip and/or a laminate;drying the spray coated layer of a carbon nanotube dispersion;repeating the spray coating and drying to form a multi-layer of a carbon nanotube mesh;patterning the carbon nanotube mesh to form a carbon nanotube mesh pattern;encapsulating the carbon nanotube mesh pattern with a polymer matrix to form a composite material leaving exposed terminal ends;attaching metal electrodes to the exposed terminal ends of the carbon nanotube mesh; andconnecting the metal electrodes to a voltage source.2. The method of claim 1 , wherein patterning the layer of the carbon nanotube mesh defines a meander pattern.3. The method of claim 2 , wherein the meander pattern is a serpentine-shaped pattern.4. The method of claim 1 , wherein patterning the layer of the carbon nanotube mesh defines a patch pattern.5. The method of claim 1 , wherein spray coating the layer of the carbon nanotube dispersion onto a chip and/or laminate comprises spray coating the layer of the carbon nanotube dispersion onto a passivation layer.6. The method of claim 1 , wherein the passivation layer comprises photosensitive polyimide.7. The method of claim 1 , wherein patterning the layer of the carbon nanotube mesh comprises a lithographic and etch process comprising depositing a photoresist claim 1 , exposing the photoresist to activating energy; developing the exposed photoresist to form a relief pattern corresponding to the pattern; and etching the layer of the carbon nanotube mesh to form the pad shaped or a serpentine shaped carbon nanotube mesh ...

CAPSULE DEVICE FOR PRESSURE MEASURING

The present invention discloses a capsule device for pressure measurement. The capsule device comprises a capsule enclosure, a data transmission assembly and a thin film pressure sensor. The capsule enclosure is formed with an accommodating chamber, and the data transmission assembly is arranged in the accommodating chamber. The thin film pressure sensor is attached to the outer surface of the capsule enclosure to measure pressure, and the thin film pressure sensor is connected with the data transmission assembly. 1. A capsule device for pressure measuring , comprisesa capsule enclosure,a data transmission assembly and wherein', 'the capsule enclosure is formed with an accommodating chamber;', 'the data transmission assembly is arranged in the accommodating chamber; and, 'a thin film pressure sensor;'} a circuit layer,', 'a bonding layer and', 'a functional film layer, wherein', 'the circuit layer and the functional film layer are bonded together through the bonding layer, and', 'the circuit layer is attached to the outer surface of the capsule enclosure;, 'one or more thin film pressure sensors, attached to the outer surface of the capsule enclosure, each comprising'}wherein each thin film pressure sensor is connected with the data transmission assembly;2. The capsule device of claim 1 , wherein the capsule enclosure comprises a cylindrical side wall claim 1 , andthe thin film pressure sensor is attached to the outer surface of the side wall alongthe circumferential direction of the side wall.3. The capsule device of claim 1 , wherein the capsule device further comprises a first vent passage claim 1 , and whereinone end of the first vent passage is connected to the thin film pressure sensor, andthe other end of the first vent passage is connected to the accommodating chamber.4. The capsule device of claim 3 , wherein the capsule device further comprises a signal line claim 3 , and whereinone end of the signal line is connected to the thin film pressure sensor, ...

DISPLAY DEVICE

According to an aspect, a display device includes: a display region in which a plurality of pixels are arrayed in a row direction and a column direction; gate lines each of which is configured to supply gate signals to the pixels aligned in the row direction; signal lines each of which is configured to supply pixel signals to the pixels aligned in the column direction; at least one first semiconductor force sensor provided in the display region; at least one second semiconductor force sensor provided in a frame region outside the display region; and a detection circuit that detects force applied to the display region based on a middle-point voltage between the first semiconductor force sensor and the second semiconductor force sensor. 1. A display device comprising:a display region in which a plurality of pixels are arrayed in a row direction and a column direction;gate lines each of which is configured to supply gate signals to the pixels aligned in the row direction;signal lines each of which is configured to supply pixel signals to the pixels aligned in the column direction;at least one first semiconductor force sensor provided in the display region;at least one second semiconductor force sensor provided in a frame region outside the display region; anda detection circuit that detects force applied to the display region based on a middle-point voltage between the first semiconductor force sensor and the second semiconductor force sensor.2. The display device according to claim 1 , wherein a resistance value of the first semiconductor force sensor and a resistance value of the second semiconductor force sensor are equivalent to each other when no force is applied.3. The display device according to claim 1 , whereineach of the pixels comprises a pixel transistor including a semiconductor layer, andeach of the first semiconductor force sensor and the second semiconductor force sensor comprises a semiconductor resistor element provided in the same layer as the ...

Sensor Device and Method for Monitoring a Clamping Force Exerted by a Clamping Element of a Clamping Device on a Component

A sensor device (-) is provided for monitoring a clamping force (F) exerted by a clamping element (-) of a clamping device (-) on a component (), with at least one strain gauge (-), which can be arranged on a surface () of the clamping element (-) of the clamping device (-) and is deformable under the clamping force (F), a transmission module unit () based on electromagnetic transmission technology connected to the at least one strain gauge (-) for detecting a voltage (U) that is indicative of a deformation (f) of the at least one strain gauge (-), and an antenna element () connected to the transmission module unit () for transmitting a signal that is indicative of the detected voltage (U), and for receiving electromagnetic energy for electrical supply of the transmission module unit () and at least one strain gauge (-). 116161111121214adadad. Sensor device (-) for monitoring a clamping force (F) exerted by a clamping element (-) of a clamping device (-) on a component () , said device comprising:{'b': 30', '30', '90', '91', '11', '11', '12', '12, 'i': a', 'd', 'a', 'd', 'a', 'd, 'at least one strain gauge (-), which can be arranged on a surface (, ) of the clamping element (-) of the clamping device (-) and is deformable under the clamping force (F),'}{'b': 36', '30', '30', '5', '30', '30, 'i': a', 'd', 'a', 'd, 'a transmission module unit () based on electromagnetic transmission technology connected to the at least one strain gauge (-), for detecting a voltage (U) that is indicative of a deformation (f) of the at least one strain gauge (-), and'}{'b': 38', '36', '5', '36', '30', '30, 'i': a', 'd, 'an antenna element () connected to the transmission module unit () for transmitting a signal that is indicative of the detected voltage (U), and for receiving electromagnetic energy for electrical supply of the transmission module unit () and at least one strain gauge (-).'}216161616303090911212adadadad. The sensor device (-) according to claim 1 , wherein the sensor ...

Non-Contact Strain Measurement System And Method For Using The Same

A non-contact strain and/or displacement measurement system for use with structural objects having an optical device, a data store and an image arrangement that is fixed relative to the structural object to be tested, the optical device including an image receiving device for receiving visual images and the data store being configured to record the received visual images, the image receiving device being spaced from the image arrangement by an optical spacing such that the image receiving device has a visual range that includes a portion of the structural object and the image arrangement being within the portion, the image arrangement having at least one image element wherein movement of the at least one image element during a measurement period provides image data to calculate structural object strain and/or structural object displacement. 1. A non-contact strain and/or displacement measurement system for use with structural objects , such as load bearing structural objects , the non-contact strain measurement system comprising an optical device , a data store and an image arrangement that is fixed relative to an associated structural object , the optical device including an image receiving device for receiving visual images and the data store being configured to record the received visual images , the image receiving device being spaced from the associated structural object , the image receiving device being spaced from the image arrangement fixed relative to the associated structural object by an optical spacing such that the image receiving device has a visual range that includes a portion of the associated structural object and the image arrangement being within the portion , the image arrangement having at least one image element , the at least one image element of the image arrangement moving with the associated structural object when an associated applied force is directed against the associated structural object and the associated applied force produces an ...

PORTABLE TEST INSTRUMENT FOR RIVET NUT SETTING TOOL

A portable test instrument for a rivet nut setting tool is disclosed, and the portable test instrument includes a shell body, a circuit module disposed in the shell body, and a strain gauge having a part located in the shell body and electrically connected to the circuit module, and a display device. An end of the strain gauge is exposed to the shell body and used to mount with the rivet nut setting tool. The strain gauge can change a value of a signal transmitted to the circuit module when being forced to deform. The display device is disposed on the shell body and electrically connected to the circuit module, and configured to display data measured by the strain gauge. 1. A portable test instrument for a rivet nut setting tool , comprising:a shell body;a circuit module disposed inside the shell body;a strain gauge having a part located inside the shell body and electrically connected to the circuit module, wherein an end of the strain gauge is exposed to the shell body and configured to mount with the rivet nut setting tool, and the strain gauge changes a value of a signal transmitted to the circuit module when being forced to deform; andat least one display device disposed inside the shell body and electrically connected to the circuit module, and configured to display data measured by the strain gauge.2. The portable test instrument according to claim 1 , wherein the strain gauge comprises a support assembly claim 1 , a strain measuring unit claim 1 , a support member and a pull pin claim 1 , the support assembly comprises a head support claim 1 , a plurality of lateral rods claim 1 , and a tail support claim 1 , two ends of the plurality of lateral rods are respectively connected to the head support and the tail support claim 1 , and around to form an accommodation area claim 1 , two ends of the strain measuring unit serve as a fastening end and a force receiving end claim 1 , respectively claim 1 , and the strain measuring unit is disposed in the accommodation ...

LOAD CELL FOR A SCALE

The invention relates to a load cell for a scale having a monolithically configured measurement body that has a force reception section, a force introduction section, and a joint section arranged between the force reception section and the force introduction section, wherein the measurement body has a longitudinal axis and an axial end at the force reception side and an axial end at the force introduction side; having at least one strain gauge arranged at the upper side on the joint section for detecting a stretching deformation of the measurement body; and having a circuit board that is electrically connected to the at least one strain gauge, that is arranged at the force reception side, and that has electronics arranged thereon for processing at least one output signal of the at least one strain gauge. 2. The load cell in accordance with claim 1 ,wherein the electronics includes an analog-to-digital converter.3. The load cell in accordance with claim 1 ,wherein the circuit board is completely sunk into the recess.4. The load cell in accordance with claim 1 ,wherein the circuit board projects outwardly over the end of the measurement body at the force reception side.5. The load cell in accordance with claim 1 ,wherein the circuit board is provided at its side facing the end of the measurement body at the force reception side with at least one hardware interface that is electrically connected to the electronics and that is freely accessible from outside the load cell.6. The load cell in accordance with claim 5 ,wherein the respective hardware interface projects outwardly over the end of the measurement body at the force reception side.7. The load cell in accordance with claim 5 ,wherein the respective hardware interface is configured as part of a plug-in connection whose plug-in direction extends horizontally8. The load cell in accordance with claim 1 ,wherein the circuit board is populated at one side, with the circuit board being inserted into the recess with its ...

BALLISTIC IMPACT DETECTION SYSTEM

A protective garment contains a projectile detection device, in addition to impact and breach resistant materials for protecting the wearer. An arrangement of force sensitive regions defines a grid arrangement responsive to an incoming projectile. The force sensitive regions include pressure sensitive or piezoelectric characteristics such that an impact varies the electrical response of each region. A detection circuit connects to each region for sampling. A sampling of the regions computes a high velocity impact by a sudden change in the sensed electrical characteristics, such as a sudden drop in resistance between two planer sheets. The grid arrangement identifies the impact placement on the garment, and can be mapped to anatomical regions to evaluate a severity. Placement and impact force, along with GPS coordinates of the wearer, are transmitted by the detection circuit and/or in conjunction with an app on a mobile device of the wearer for alerting first responders. 1. A projectile detection device for a protective garment , comprising:an electrically resistive mesh disposed between opposed planar sheets of a selectively conductive material, the opposed planar sheets configured for electrical communication in response to pressure;a plurality of conductive members for applying a voltage to each of the opposed planar sheets; anda detection circuit for identifying an electrical communication between the opposed planar sheets, the detection circuit configured for determining, based on the identified electrical communication, a severity and location of a projectile impact causing a compressive force.2. The device of wherein the conductive members further comprise a conductive sheet disposed on the selectively conductive material claim 1 , the conductive members connected to the detection circuit.3. The device of wherein the detection circuit is configured to sample a series of measurements indicative of the electrical communication and compute a change in the ...

Force limiting latch indicator

A latch indicator apparatus for indicating a locked status of an attachment between a cable housing and a cable receptor. The latch indicator apparatus includes a latch indicator attached to a cable housing at an attachment point, a first resistive element having a first resistance, and is attached to the cable housing at the attachment point. The restive element of the latch indicator attaches to an indicator tab. The latch indicator includes an indicator window, which is positioned to indicate a locked status of the latch indicator based on the first resistance of the first resistive element. The latch indicator tests a connection between a cable housing and a cable housing by indicating a locked status. The locked status is indicated by exerting a first force on the indicator tab by pulling the indicator tab in a direction away from the connection between the cable housing and the cable receptor.

INPUT INTERFACE DEVICE WITH SEMICONDUCTOR STRAIN GAGE

The invention provides for an interface device that measures strain on a specific area of the printed circuit board. The measurements are converted into an electrical signal and sent for processing. The processing results in the apparatus performing a desired function. 1. An interface device for an electronic apparatus comprising:a printed circuit board having a plurality of layers, wherein one or more of the layers is a conductive layer;a strain sensing device comprising a substrate and at least one strain sensing element, wherein the strain sensing device is mounted on the printed circuit board, wherein the strain sensing device measures the deformation or bending of the printed circuit board in response to an applied force or strain on the printed circuit board, wherein the deformation or bending results in the change of resistance or conductivity of the strain sensing element, wherein the amount of change of resistance or bending is translated into a digital signal; anda processing unit communicatively connected to the printed circuit board and the strain sensing device, wherein the processing unit receives the digital signal thereby resulting in an action executed by the processing unit.2. The interface device of claim 1 , wherein a flexure is formed within the printed circuit board claim 1 , wherein the force is applied to the flexure claim 1 , wherein the flexure includes a plurality of sides claim 1 , wherein at least one side is attached to the printed circuit board thereby providing structural stability to the flexure claim 1 , wherein a plurality of sides are not attached to the printed circuit board claim 1 , wherein the flexure is situated such that either the top claim 1 , bottom claim 1 , or both top and bottom of the flexure is able to deform or bend when a force is applied.3. The interface device of claim 2 , wherein the flexure has a length of between 2 mm and 10 mm claim 2 , wherein the printed circuit board has a thickness of between 0.2 mm and 2 ...

FORCE LIMITING LATCH INDICATOR

A latch indicator apparatus for indicating a locked status of an attachment between a cable housing and a cable receptor. The latch indicator apparatus includes a latch indicator attached to a cable housing at an attachment point, a first resistive element having a first resistance, and is attached to the cable housing at the attachment point. The restive element of the latch indicator attaches to an indicator tab. The latch indicator includes an indicator window, which is positioned to indicate a locked status of the latch indicator based on the first resistance of the first resistive element. The latch indicator tests a connection between a cable housing and a cable housing by indicating a locked status. The locked status is indicated by exerting a first force on the indicator tab by pulling the indicator tab in a direction away from the connection between the cable housing and the cable receptor. 1. A latch indicator comprising:a cable housing that protects a cable; and a first resistive element having a first resistance attached to the cable housing at the attachment point,', 'an indicator tab attached to the resistive element, and', 'an indicator window positioned to indicate a locked status of a connection between the cable housing of the latch indicator based on the first resistance;', 'a second resistive element having a second resistance that is interchangeably substituted with the first resistive element having a first resistance; and, 'a latch indicator removably attached to the cable housing at an attachment point, wherein the latch indicator includes 'receiving an exerted first force on the indicator tab, wherein the exerted first force includes a pulling of the indicator tab in a direction away from the connection between the cable housing and cable receptor.', 'the first resistance of the first resistive element for testing the connection between a cable housing and a cable receptor to indicate a locked status by2. The latch indicator apparatus of ...

Strain gauge and multi-axis force sensor

There is provided a flexure body configured to be used in detection of load applied in first direction and a load applied in second direction orthogonal to the first direction. The flexure body including: a flexure member; and a circuit pattern. The flexure member has a flexure area configured to be strained under load from detection object and an area different from the flexure area. The circuit pattern includes two pieces of first-direction strain sensitive elements, two pieces of second-direction strain sensitive elements, and at least one of a first-direction fixed resistance element and a second-direction fixed resistance element. Two pieces of first-direction strain sensitive elements and two pieces of second-direction strain sensitive elements are provided in the flexure area, and the at least one of the first-direction fixed resistance element and the second-direction fixed resistance element is provided in the area different from the flexure area.

MASS MEASUREMENT DEVICE

A mass measurement device comprises a force sensor, a hose, a base part, an article-holding part, and a computation unit. The force sensor has a fixed end and a free end, and outputs a sensing signal in accordance with the magnitude of a force in a sensitivity direction. The hose is configured to pass suctioned air through it. The fixed end is fixed to the base part. The article-holding part is fixed to the free end, one end of the hose is connected to the article-holding part, and the article-holding part holds an article by air suction. The computation unit computes the mass of the article based on the sensing signal. 1. A mass measurement device comprising:a force sensor, which has a fixed end and a free end, and outputs a sensing signal in accordance with a magnitude of a force in a sensitivity direction;a suction channel configured to pass suctioned air through the suction channel;a base part to which the fixed end is fixed;an article-holding part fixed to the free end, one end of the suction channel being connected to the article-holding part, and the article-holding part being configured to hold an article due to the suctioned air; anda computation unit configured to compute a mass of the article based on the sensing signal;wherein the force sensor and the suction channel are disposed so that an x-axis directional component of a force exerted on the article-holding part by the suction channel is the smallest among the x-axis directional component, a y-axis directional component, and a z-axis directional component, where the sensitivity direction is an x-axis direction, a direction orthogonal to the x-axis direction is a y-axis direction, and a direction orthogonal to both the x-axis direction and the y-axis direction is a z-axis direction.2. The mass measurement device according to claim 1 , whereinthe suction channel is disposed so as to pass through the base part.3. The mass measurement device according to claim 1 , whereinthe suction channel has a hose ...

DIGITAL SENSOR FOR PRE-WARNING OF MULTISTAGE BREAKAGE-TRIGGERED DEFORMATION THRESHOLD

A digital sensor for pre-warning of multistage breakage-triggered deformation threshold includes first tension rods, second tension rods, a radio-frequency identification (RFID) chip, and a brittle fracture module, where the first tension rods as well as the second tension rods are respectively fixedly connected to two points to be measured on a tension member, and the first tension rods and the second tension rods can move reversely with deformation of the tension members; the RFID chip is fixedly arranged on the first tension rods; the brittle fracture module includes a bottom plate and a plurality of resistors, where two ends of the bottom plate are fixed to the first tension rods and the second tension rods, and the plurality of resistors forming a lumped parallel circuit are parallelly arranged on the bottom plate; the RFID chip is connected to two ends of the lumped parallel circuit. 1. A digital sensor for pre-warning of multistage breakage-triggered deformation threshold , comprising:first tension rods and second tension rods, wherein the first tension rods as well as the second tension rods are respectively fixedly connected to two points to be measured on a tension member, and the first tension rods and the second tension rods can move reversely with deformation of the tension members;a radio-frequency identification (RFID) chip fixedly arranged on the first tension rods; anda brittle fracture module comprising a bottom plate and a plurality of resistors, wherein two ends of the bottom plate are fixed to the first tension rods and the second tension rods, and the plurality of resistors forming a lumped parallel circuit are parallelly arranged on the bottom plate; the RFID chip is connected to two ends of the lumped parallel circuit; strength of the middle cross section of the bottom plate is reduced, and in this way, the bottom plate will be fractured by being tensioned when the first tension rods and the second tension rods move away from each other with ...

Force/Torque Sensor Having Serpentine or Coiled Deformable Beams and Overload Beams

A force/torque sensor includes a plurality of serpentine or spiral deformable beams connecting a TAP and MAP. These classes of shapes increase the overall length of the deformable beams, which reduces their stiffness. In addition to the deformable beams is a plurality of straight overload beams, each connected at a first end to one of the TAP and MAP, and separated from the other of the TAP and MAP at the second end by an overload gap of a predetermined width. Over a first range of forces and torques, strain gages on the deformable beams transduce compressive and tensile strains into electrical signals, which are processed to resolve the forces and torques. Over a second range of forces and torques greater than the first range, the overload beams close the overload gap, establishing rigid contact to both the TAP and MAP. The stiffness of the sensor in the second range of forces and torques is greater than over the first range. 1. A force/torque sensor , comprising:a Tool Adapter Plate (TAP) operative to be connected to a first object:a Mounting Adapter Plate (MAP) operative to be connected to a second object; a serpentine deformable beam, wherein at least one directed path taken down the centerline of the serpentine deformable beam from a point of attachment to the TAP to a point of attachment to the MAP deviates from an instantaneous straight line at least once to the left and at least once to the right, and', 'a spiral deformable beam, wherein at least one directed path taken down the centerline of the spiral deformable beam from a point of attachment to the TAP to a point of attachment to the MAP deviates from an instantaneous straight line to one of the left or the right, and wherein the cumulative sum of such deviation is 90-degrees or greater;, 'one or more deformable beams connecting the TAP to the MAP, each deformable beam comprising at least one of'}strain gages affixed to one or more surfaces of at least some of the serpentine or spiral deformable beams, ...

MEASUREMENT SYSTEM FOR DETERMINING SUPPORT FORCE

A support force measurement apparatus for determining a support force on a support element of a support structure of a movable working machine. The measurement apparatus has at least one measurement element and a support leg. The measurement element is connected to a deformation body capable of being deformed with an effect of the support force, so as to form a sensor and send a signal proportional to the support force. The support leg has the sensor and is movably connected to the support element. The support element comprises a cable connection, and the cable connection is constructed in a manner of guiding electrical energy and is used for sending the signal proportional to the support force to an analysis apparatus in a machine. The support element in the support leg and the sensor are provided with electromagnetic interfaces. 1. A support force measurement apparatus for measuring a support force on a support element of a support structure of a movable working machine , the apparatus comprising:at least one measurement element, which is connected to a deformation body deformable with an effect of the support force, so as to form a sensor and send a signal proportional to the support force; anda support leg, which comprises the sensor and is movably connected to the support element, the support element comprising a cable connection, the cable connection guiding electrical energy and being used for sending the signal proportional to the support force to an analysis apparatus in the machine,wherein the support element in the support leg and the sensor are provided with electromagnetic interfaces,wherein the measurement element is supplied via electromagnetic induction with electrical energy from the machine through the electromagnetic interfaces, andwherein the signal proportional to the support force is transmitted via electromagnetic induction from the measurement element to the cable connection of the support element.2. The support force measurement apparatus ...

THIN FILM STRAIN GAUGE

A strain gauge includes: a substrate; a dielectric layer on the substrate; a thin film electrical circuit on the dielectric layer and having input/output terminals; other layers disposed on the electrical circuit; the dielectric layer forming a first seal on one side of the electrical circuit, the other layers forming a second seal on a second side of the electrical circuit, the first and second seals having structure such that: in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage in response to a first input voltage; and in a second instance subsequent to exposure of the strain gauge to at least 25 autoclave cycles, the electrical circuit is productive of a second output voltage in response to a second input voltage, the first and second input voltages being equal, and the first and second output voltages being equal. 1. An open-face strain gauge , comprising:a substrate;at least one dielectric layer disposed on top of the substrate;a thin film electrical circuit disposed on top of the at least one dielectric layer and having at least two input terminals and at least two output terminals;a plurality of layers disposed on top of the electrical circuit;the at least one dielectric layer forming a first moisture resistant seal on one side of the electrical circuit, the plurality of layers forming a second moisture resistant seal on a second side of the electrical circuit opposite the first side, the first and second moisture resistant seals having structure such that:in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage on the output terminals in response to a first input voltage on the input terminals; andin a second instance subsequent to exposure of the strain gauge to at least 25 autoclave cycles, the electrical circuit is productive of a second output voltage on the output terminals in ...

LOAD DETECTION APPARATUS

A load detection apparatus includes a load input portion having a input surface, and an output surface; a flexure element including on annular portion including a contacting portion configured to make contact with at least a part of the output surface, and a support portion; a set of sensors disposed on a reverse surface opposite to a surface provided with the contacting portion in the annular portion, each of the set of sensors being configured to detect distortion corresponding to an input load; a set of calculation portions configured to calculate a set of magnitudes of the load by use of respective detection results obtained by the set of sensors; and an abnormality determination portion configured to determine whether the set of sensors and the set of calculation portions have no abnormality, by comparing the set of magnitudes of the load with each other. A load detection apparatus comprising:a load input portion having a planar input surface into which a load is input, and an output surface provided on a side opposite to the input surface such that the output surface projects;a flexure element including an annular portion including a contacting portion configured to make contact with at least a part of the output surface, and a support portion configured to support the annular portion such that the annular portion is swingable;a set of sensors disposed on a reverse surface opposite to a surface provided with the contacting portion in the annular portion, each of the set of sensors being configured to detect distortion corresponding to the load input into the load input portion;a set of calculation portions configured to calculate a set of magnitudes of the load by use of respective detection results obtained by the set of sensors; andan abnormality determination portion configured to determine whether the set of sensors and the set of calculation portions have no abnormality, by comparing the set of magnitudes of the load with each other.21. The load detection ...

METHOD FOR PRODUCING PRESSURE DETECTION DEVICE, PRESSURE DETECTION DEVICE, PRESSURE-SENSITIVE SENSOR, AND ELECTRONIC DEVICE

A method for producing a pressure detection device () includes a first process (S) of preparing a pressure-sensitive sensor () which includes a first circuit () and a second circuit () electrically connecting each other in series, the first circuit () including a pressure-sensitive body () of which an electrical resistance value is consecutively changed according to a pressure, the second circuit () including a fixed resistor () of which an electrical resistance value can be adjusted to be a desired value; and a second process (S) of adjusting the electrical resistance value of the fixed resistor () on the basis of a ratio (R:R) between an electrical resistance value (R) of at least pressure-sensitive body () in the first circuit () and an electrical resistance value (R) of at least fixed resistor () in the second circuit () in a case where a predetermined pressure is applied to the pressure-sensitive body (). 1. A method for producing a pressure detection device , comprising:a first process of preparing a pressure-sensitive sensor which includes a first circuit and a second circuit electrically connecting each other in series, the first circuit including a pressure-sensitive body of which an electrical resistance value is consecutively changed according to a pressure, the second circuit including a fixed resistor of which an electrical resistance value can be adjusted to be a desired value; anda second process of adjusting the electrical resistance value of the fixed resistor on the basis of a ratio between an electrical resistance value of at least pressure-sensitive body in the first circuit and an electrical resistance value of at least fixed resistor in the second circuit in a case where a predetermined pressure is applied to the pressure-sensitive body.212-. (canceled)13. The method for producing the pressure detection device according to claim 1 , whereinthe second process includes adjusting a volume of the fixed resistor so as to adjust the electrical ...

THIN FILM STRAIN GAUGE

A strain gauge includes: a substrate; a dielectric layer on the substrate; a thin film electrical circuit on the dielectric layer and having input/output terminals; another layer disposed on the electrical circuit; the dielectric layer forming a first seal on one side of the electrical circuit, the another layer forming a second seal on a second side of the electrical circuit, the first and second seals having structure such that: in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage in response to a first input voltage; and in a second instance subsequent to exposure of the strain gauge to at least 10 autoclave cycles, the electrical circuit is productive of a second output voltage in response to a second input voltage, the first and second input voltages being equal, and the first and second output voltages being equal within a 15% shift in zero offset. 1. An open-face strain gauge , comprising:a substrate;at least one dielectric layer disposed on top of the substrate;a thin film electrical circuit disposed on top of the at least one dielectric layer and having at least two input terminals and at least two output terminals;at least one layer disposed on top of the electrical circuit;the at least one dielectric layer forming a first moisture resistant seal on one side of the electrical circuit, the at least one layer forming a second moisture resistant seal on a second side of the electrical circuit opposite the first side, the first and second moisture resistant seals having structure such that:in a first instance prior to exposure of the strain gauge to an autoclave cycle, the electrical circuit is productive of a first output voltage on the output terminals in response to a first input voltage on the input terminals; andin a second instance subsequent to exposure of the strain gauge to at least 10 autoclave cycles, the electrical circuit is productive of a second output ...

MULTI-TYPE PRESSURE SENSOR

A pressure sensor includes a substrate, a patterned circuit, and a conductive material layer. The patterned circuit, formed on the substrate, includes a first-path part and a second-path part of which at least a part is formed at a predetermined gap from at least a part of the first-path part. The conductive material layer, resiliently disposed on the patterned circuit, has protrusions. The conductive material layer deforms to determine a contact area between the protrusions and the substrate, and upon deformation of the conductive material layer to contact the first-path part, the gap between the first-path part and the second-path part, and the second-path part, the first-path part electrically connects to the second-path part. 1. A pressure sensor , comprising:a substrate;a patterned circuit, formed on the substrate, comprising a first-path part and a second-path part of which at least a part is formed at a predetermined gap from at least a part of the first-path part; anda conductive material layer, resiliently disposed on the patterned circuit, having protrusions,wherein the conductive material layer deforms to determine a contact area between the protrusions and the substrate, and upon deformation of the conductive material layer to contact the first-path part, the gap between the first-path part and the second-path part, and the second-path part, the first-path part electrically connects to the second-path part.2. The pressure sensor of claim 1 ,wherein the protrusions protrude from the conductive material layer downwards and extend in a longitudinal direction of the substrate and are arranged in a width direction of the substrate.3. The pressure sensor of claim 2 ,wherein each of the first-path part and the second-path part includes at least one of a first-line part extended in the longitudinal direction and a second-line part extended obliquely to the longitudinal direction, andone side portion of each of the first-path part and the second-path part ...

FORCE-SENSITIVE LARYNGOSCOPE SENSOR

Force sensing may be integrated with a laryngoscope and information conveyed to the user when an applied force in a patient's mouth may cause dental trauma. By warning the user, the user may be interrupted before dental trauma occurs, allowing the user to adjust the procedure. 1. An apparatus , comprising:a body portion having an interior side and an exterior side;a force sensor coupled to the exterior side of the body portion;a circuit coupled to the force sensor and configured to provide feedback based on an output of the force sensor; anda laryngoscope battery interface,wherein the body portion is configured to be removably connected to a laryngoscope having a laryngoscope blade such that the interior side of the body portion is adjacent to the laryngoscope blade, andwherein the laryngoscope battery interface is configured to electrically couple the circuit to a power system of a laryngoscope when the body portion is attached to the laryngoscope.2. The apparatus of claim 1 , wherein the apparatus is disposable.3. The apparatus of claim 1 , wherein the body portion comprises latex rubber.4. The apparatus of claim 1 , wherein the force sensor comprises a plurality of layers of force sensitive material.5. The apparatus of claim 4 , wherein the force sensitive material is conductive.6. The apparatus of claim 4 , wherein the force sensor further comprises a non-force sensitive material.7. The apparatus of claim 6 , wherein the non-force sensitive material is conductive.8. The apparatus of claim 7 , wherein the non-force sensitive material is a metal foil.9. The apparatus of claim 1 , wherein the circuit comprises a microcontroller configured to detect when pressure applied to the force sensor exceeds a first threshold level.10. The apparatus of claim 9 , further comprising a voltage step-up circuit coupled to the body portion and configured to receive a first supply voltage from the laryngoscope battery interface as input and output a second claim 9 , higher claim 9 , ...

FORCE SENSOR INTEGRATED ON SUBSTRATE

A Internet of Things (loT) tag for measuring transmitted force applied on the loT tag, including a substrate, a force sensor integrated on the substrate, and a sensing circuit integrated on the substrate and configured to output a digital word measurement in response to an applied force on the force sensor. 1. An Internet of Things (loT) tag for measuring transmitted force applied on the loT tag , comprising:a substrate;a force sensor integrated on the substrate; anda sensing circuit integrated on the substrate and configured to output a digital word measurement in response to an applied force on the force sensor.2. The loT tag of claim 1 , wherein the sensing circuit further comprises:an oscillating circuit; and determine a frequency from a pulse signal outputted from the oscillating circuit;', 'correspond the determined frequency with the applied force; and', 'compute the applied force based on the determined frequency,, 'a sensor logic configured towherein the sensor logic is further configured to include a counter and a flip-flop circuit.3. The loT tag of claim 1 , wherein the force sensor comprises:a sensing layer, a conductive layer, and a spacer layer between the sensing layer and the conductive layer.4. The loT tag of claim 3 , wherein the sensing layer comprises at least a film including particles claim 3 , wherein the particles contact the conductive layer upon application of the force on the sensing layer.5. The loT tag of claim 3 , whereinthe conductive layer includes a metallic conductor, andthe metallic conductor comprises any one of conductive ink or nano-material ink that is printed on the substrate.6. The loT tag of claim 5 , wherein the metallic conductor comprises conductive metallic material that is formed on the substrate by etching.7. The loT tag of claim 3 , wherein the spacer layer comprises a plastic film.8. The loT tag of claim 2 , wherein the oscillating circuit includes a ring oscillator having a plurality of inverters.9. The loT tag of ...

TWO-POINT POLISHED ROD LOAD-SENSING SYSTEM

An apparatus includes a first clamping mechanism configured to grip a tubular member at a first location along the tubular member. The apparatus also includes a second clamping mechanism configured to grip the tubular member at a second location along the tubular member that is axially-offset from the first location. The apparatus also includes a base positioned between the first and second clamping mechanisms. The apparatus also includes a strain gauge coupled to the base. 1. An apparatus , comprising:a first clamping mechanism configured to grip a tubular member at a first location along the tubular member;a second clamping mechanism configured to grip the tubular member at a second location along the tubular member that is axially-offset from the first location;a base positioned between the first and second clamping mechanisms; anda strain gauge coupled to the base.2. The apparatus of claim 1 , wherein the first clamping mechanism claim 1 , the second clamping mechanism claim 1 , and the base together have a substantially U-shaped cross-section in a first plane claim 1 , and wherein the first clamping mechanism has a substantially U-shaped cross-section in a second plane that is perpendicular to the first plane.3. The apparatus of claim 1 , wherein the first clamping mechanism comprises first and second arms claim 1 , and wherein the tubular member is configured to be received at least partially between the first and second arms.4. The apparatus of claim 3 , wherein an inner surface of the first arm defines a recess that is shaped and sized to receive the tubular member.5. The apparatus of claim 3 , further comprising a screw mechanism coupled to the second arm claim 3 , wherein the screw mechanism is configured to move toward the first arm when rotated in a first direction to clamp the tubular member between the screw mechanism and the first arm.6. The apparatus of claim 5 , wherein the first and second arms extend from the base in a first direction claim 5 , ...

Sensor device

The detection range and the detection precision of a sensor device that makes use of the deformation of a viscoelastic elastomer are made variable. The sensor device comprises a magnetic viscoelastic elastomer containing electroconductive magnetic particles dispersed therein so as to demonstrate an elastic modulus that varies depending on a magnetic field applied thereto and an electric resistance in a prescribed direction that varies depending on a deformation thereof, electromagnets for applying a magnetic field that can be varied to the magnetic viscoelastic elastomer, a resistance detection circuit for detecting the electric resistance of the magnetic viscoelastic elastomer, and a control unit for computing at least one of a deformation state of the magnetic viscoelastic elastomer and a load applied to the magnetic viscoelastic elastomer according to a detection value of the resistance detection circuit and a magnitude of the magnetic field applied by the electromagnets.

Strain sensing system

The present invention provides a system 10 for measuring and remotely monitoring strain in an element 1 having a strain sensor 20, a telemetry circuit 40 for transmitting strain data to a remote location, and a reader module 60 for transmitting energy to the telemetry circuit and receiving said data.

Smart carpet systems and methods of using same for monitoring physical and physiological activities

Systems and methods for using a smart carpet to monitor a health status of an individual. The smart carpet has electronics and a plurality of pressure sensing areas for sensing plantar pressure of the individual. A monitoring computer comprising a processor and a memory including machine readable instructions processes carpet data. A first part of the smart carpet is scanned at a first frequency and a second part of the smart carpet is scanned at a second frequency greater than the first frequency. Plantar pressures are received from the second part of the carpet and the instructions evaluate the plantar pressures to determine at least one of a physical activity and a physiological activity. Where an emergency condition is determined, an alarm is communicated to monitoring personnel.

민감도 제어가 가능한 자기 유변 탄성체 기반 스트레인 게이지와 이를 포함하는 감지장치

본 발명은 민감도 제어가 가능한 스트레인 게이지를 개시한다. 본 발명에 따른 스트레인 게이지는, 도전성 박막; 도전성 박막의 적어도 일면을 지지하는 것으로서, 탄성기재에 자성입자가 함유된 자기유변탄성체로 이루어진 지지부재를 포함한다. 본 발명에 따르면, 도전성 박막을 지지하는 지지부재에 자기유변탄성체를 사용하고 도전성 박막의 주변에 형성되는 자기장의 세기를 조절하여 지지부재의 강성을 조절함으로써 스트레인 게이지의 민감도를 다양하게 조절할 수 있다.

Strain sensing system

본 발명은 변형 센서(20), 원격 위치에 변형 데이터를 전송하기 위한 원격측정 회로(40) 그리고 상기 데이터를 수신하고 상기 원격측정 회로로 에너지를 전송하기 위한 판독기 모듈(60)을 지닌 엘리먼트(1) 내의 변형을 측정하고 원격적으로 모니터링 하기 위한 시스템(10)을 제공한다. The invention relates to an element 1 having a strain sensor 20, a telemetry circuit 40 for transmitting strain data to a remote location and a reader module 60 for receiving the data and transmitting energy to the telemetry circuit. A system 10 is provided for measuring and remotely monitoring deformations in the system.

Method and system of pressure and temperature measurement by strain gage

FIELD: measurement. SUBSTANCE: invention relates to measuring equipment, in particular to measuring temperature and pressure. Method of measuring the pressure and temperature by a strain gage includes a supply of current to the diagonal of supplying the strain gage and measuring the voltage at the measuring diagonal U + . When the direction of the current of the strain gauge supply is changed, the voltage U - is measured. Unlike the prototype, the actual values of the temperature T and the pressure P are measured from the resistance R by calibration characteristics, the parameters of which are the temperature limit resistances R T , pressure R P and the corresponding limiting temperature T 0 and the pressure P o , Calibration characteristics are constructed a priori from known samples with normalized measures of the upper and lower boundaries of the adaptive range T i , P i , where i=1, 2, and from the ratio of the actual values T, P of the calibration characteristics of the resistance against temperature and pressure, the volume V is calculated. In a pressure and temperature measuring system, a strain gauge system containing a standard bridge pressure sensor with strain gauges connected via a four- computing device, unlike the prototype, the inverter is included in the supply diagonal of the strain gage, the measuring diagonal of which is connected to the information inputs of the measuring and computing device, Control outputs of the latter are connected to the corresponding inputs of the DC inverter in bipolar pulses. In the proposed method, unlike the prototype, the actual values of temperature, pressure and volume are measured by calibration characteristics, that as a result does not exceed the methodical error of automatic measurement of climate characteristics (temperature, pressure and volume) 0.06% of a full-scale experiment. EFFECT: technical result is automation of pressure, temperature and volume measurement due by using calibration characteristics, ...

Sensor device

在利用了粘弹性体的变形的传感器装置中，使检测范围及检测精度可变。传感器装置(1)具有：磁粘弹性体(2)，其在内部分散有导电性的磁性粒子(15)，根据施加的磁场的强度而使弹性模量发生变化，并且伴随变形而使规定方向上的电阻值发生变化；磁场施加机构(5、6)，其向磁粘弹性体施加磁场，并且能够变更施加的磁场的强度；电阻检测机构(35)，其对磁粘弹性体的电阻进行检测；以及运算机构(10)，其基于电阻检测机构的检测值和磁场施加机构施加的磁场的强度，来对磁粘弹性体的变形状态及施加于磁粘弹性体的载荷中的至少一个进行运算。

MEASURING DEVICE.

A kind of intelligence sensor and its working method

本发明公开的一种智能应变力传感器及其工作方法，属传感器领域。本发明包括弹性体、应变片、电桥，还包括具有唯一序列码的芯片、插头、单片机、滤波电路、A/D转换电路、放大电路、复位电路、时钟电路。芯片采用封装方式接入传感器插头的接线腔中，电桥的输出信号线也接入传感器插头的接线腔中，插头的另一端与显示终端相连。单片机用于读取芯片对应的唯一序列码。通过唯一序列码建立传感器与对应芯片的编码关系。通过显示终端判断当前时间间隔读取的序列码是否已经存在，进而实现判断与所述序列码对应的传感器是否更换。通过显示终端存储的传感器信息计算出当前智能应变力传感器测得的力或扭矩值，即实现当前智能应变力传感器即插即用测量。

Pressure detection circuit, device and pressure input device

本发明公开了一种压力检测电路，包括：震荡单元，用于输出震荡信号；计数器单元，与震荡单元连接，用于获取震荡信号频率并计数；比较器单元，与计数器单元连接，用于发出信号以控制计数器单元计数或停止；电压转换单元，与比较器单元连接，用于对比较器单元提供可比较电压；恒定电流源充电单元，与比较器单元连接，用于对比较器单元提供比较电压；充放电控制单元，与恒定电流源充电单元连接，用于对恒定电流源充电单元进行充放电控制；压力获取单元，压力获取单元作为电压转换单元或震荡单元的组成部分，将压力转化为可比较电压或震荡信号频率的变化。还公开了一种压力检测装置及压力输入装置。本发明具有解析度高、省电及适用性强的技术效果。

Display apparatus

본 발명은 벤딩에도 불구하고 손상이 최소화되는 디스플레이 장치를 위하여, 제1영역과 제2영역 사이에 위치하며 제1방향으로 연장된 벤딩영역을 갖는 기판과, 상기 기판의 상기 벤딩영역 상에 위치하는 제1압전소자와, 압력감지부를 구비하며, 상기 압력감지부가 감지한 압력 변화에 따라 상기 제1압전소자를 수축 또는 팽창시키는, 디스플레이 장치를 제공한다. The present invention provides a substrate positioned between a first region and a second region and having a bending region extending in the first direction for a display device in which damage is minimized despite bending, and a substrate positioned on the bending region of the substrate. Provided is a display device comprising a first piezoelectric element and a pressure sensing unit, wherein the first piezoelectric element contracts or expands according to a change in pressure sensed by the pressure sensing unit.

Footwear having sensor system

A sensor system is adapted for use with an article of footwear and includes an insert member including a first layer and a second layer, a port connected to the insert and configured for communication with an electronic module, a plurality of force and/or pressure sensors on the insert member, and a plurality of leads connecting the sensors to the port.

Loadcell With Semiconductor Strain Gauge

A load cell (100) of the present invention includes: a body (110) including a stress-sensitive part (111), which is formed to be thinner than other parts to easily sense stress, in one place; one single semiconductor-type strain gauge (120) attached to a surface where the stress-sensitive part of the body is located; and a circuit board (130) including a peripheral circuit having a function of operating the semiconductor-type strain gauge and a function of amplifying a sensing signal of the semiconductor-type strain gauge. The semiconductor-type strain gauge includes a full-bridge resistor, in which four resistors form a square wheat-stone bridge, in a single chip. Therefore, the present invention is capable of securing high-precision and high-reliability.