СПОСОБ ОПРЕДЕЛЕНИЯ УРОВНЯ НАПОЛНЕНИЯ В РЕЗЕРВУАРЕ

Изобретение относится к способу определения уровня (17) наполнения в резервуаре (4) для жидкости, имеющем ультразвуковой датчик (3) уровня наполнения и по меньшей мере две эталонные поверхности (1, 2) для отражения ультразвуковой волны, которая испускается ультразвуковым датчиком (3) уровня наполнения, причем первая эталонная поверхность (1) расположена под второй эталонной поверхностью (2). На шаге а) способа определяют первую скорость (9) распространения ультразвуковой волны в жидкости на первом измерительном участке (5) от ультразвукового датчика уровня наполнения до первой эталонной поверхности (1). На шаге б) способа определяют вторую скорость (10) распространения ультразвуковой волны в жидкости на втором измерительном участке (6) от первой эталонной поверхности (1) до второй эталонной поверхности (2). На шаге в) измеряют время (8) прохождения ультразвуковой волны от ультразвукового датчика (3) уровня наполнения до уровня свободной поверхности (7) жидкости в резервуаре (4). На шаге ...

УСТРОЙСТВО КОМПЕНСАЦИИ ПОГРЕШНОСТИ ИЗМЕРЕНИЯ УЛЬТРАЗВУКОВОГО ЛОКАТОРА

Изобретение относится к ультразвуковым локационным измерителям уровня жидкости и сыпучих продуктов. Технический результат заключается в снижении погрешности измерений. Устройство компенсации погрешности измерения ультразвукового локатора содержит генератор ультразвуковых импульсов, соединенный с излучателем, приемник, соединенный с усилителем, к выходу которого подключены два пороговых устройства с различными пороговыми напряжениями, два источника опорного напряжения, подключенные к входам соответствующих пороговых устройств, выходы пороговых устройств подключены к соответствующим блокам формирования временного интервала, выходы которых подключены к блоку управления и индикации, выходы которого соединены с входом генератора и с входом первого блока формирования временного интервала. В качестве источников опорного напряжения использованы регулируемые источники опорного напряжения с изменяемым напряжением, входы которых подключены к выходам соответствующих регуляторов, входы которых связаны ...

АВТОМАТИЧЕСКИЙ НАКОПИТЕЛЬ ПАРАЗИТНОГО ЭХО-СИГНАЛА

... 1. Способ динамического обновления устройства накопления паразитного эхо-сигнала измерителя (2) уровня заполнения, работающего согласно способу рабочего цикла, в этом способе устройство накопления паразитного эхо-сигнала обновляют данными паразитного эхо-сигнала, когда предварительно за параметризуемый период времени полезный эхо-сигнал был идентифицирован как таковой в результате динамического характера изменения положения типичных характеристик эхо-сигнала, причем паразитные эхо-сигналы, распознанные в результате статического характера изменения их типичных характеристик на протяжении того же периода времени, используют для обновления устройства накопления паразитного эхо-сигнала. 2. Способ по п.1, в котором записывают кривую эхо-сигнала, отраженную материалом (3), который должен быть измерен, сохраняют по меньшей мере две из записанных кривых эхо-сигналов разных периодов, распределяют эхо-сигналы сохраненных кривых эхо-сигналов разных периодов по общим группам эхо-сигналов одинакового ...

ИЗМЕРИТЕЛЬ УРОВНЯ ЗАПОЛНЕНИЯ, СПОСОБ ЭКСПЛУАТАЦИИ ИЗМЕРИТЕЛЯ УРОВНЯ ЗАПОЛНЕНИЯ, А ТАКЖЕ СОСТОЯЩИЙ ИЗ ИЗМЕРИТЕЛЯ УРОВНЯ ЗАПОЛНЕНИЯ И ДИСТАНЦИОННОГО ЭЛЕМЕНТА КОНСТРУКТИВНЫЙ УЗЕЛ

Verfahren und Vorrichtung zur Tankfüllstandserfassung in einem Kraftfahrzeug

Die Erfindung betrifft eine Vorrichtung zur Ermittlung des Tankfüllstandswertes von bewegten Fahrzeugen, umfassend wenigstens einen Tank, wenigstens einen Füllstandsgeber, wenigstens ein Steuergerät, wenigstens eine Pumpe.

FLÜSSIGKEITSSTANDSMESSER

MESSEINRICHTUNG UND VERFAHREN ZUR BESTIMMUNG DES FÜLLSTANDES IN FLÜSSIGKEITSBEHÄLTERN, VORZUGSWEISE FÜR TANKANLAGEN.

Drainage measurement of open channels - has level and inductive flow speed measurement devices with signal multiplier circuit

A drainage measurement device for open channels has a liquid level measurement device and an inductive flow speed measurement sensor. The flow speed sensor consists of a magnetic field (B) source in the open channel and a pair of electrodes (21,22) in contact with the liquid. The device is economical to produce and produces accurate measurement results independent of the level to which the channel is filled. The source of the magnetic field is a single magnetic coil (16) below the channel (10). The coil has short circuit plates (18,19) which project upwards and near the side walls of the channel. Pole shoes (20) are attached to the ends of the plates. The fluid level measurement device (14,15) and electrode signals are multiplied together and raised to a power dependent on the channel geometry.

Meßsystem

Wanddurchgangs-Ultraschallwandler für Behälter

Es wird eine Technologie für einen mit einer Ultraschallsensor-Teilanordnung gekoppelten Behälter beschrieben, wobei der Behälter und die Ultraschallsensor-Teilanordnung für einen Ultraschallsensor kombiniert sind. In einer Ausführungsform ist die Ultraschallsensor-Teilanordnung dafür konfiguriert, beim Koppeln mit einem Behälter, der eine Behälterwand aufweist, einen Ultraschallsensor zu bilden. Die Ultraschallsensor-Teilanordnung enthält ein Sensorteilanordnungsgehäuse, ein planares piezoelektrisches Element, das sich innerhalb des Sensorteilanordnungsgehäuses befindet, und eine Schaltungsanordnung, die mit dem planaren piezoelektrischen Element elektrisch verbunden ist, wobei das planare piezoelektrische Element eine Oberfläche enthält, die in der Weise mit der Behälterwand gekoppelt ist, dass die Behälterwand eine Anpassungsschicht eines Ultraschallsensors bildet, und wobei die Schaltungsanordnung dafür konfiguriert ist, ein Signal zum Ansteuern des planaren piezoelektrischen Elements ...

SYSTEME UND VERFAHREN ZUR FLUIDPEGEL- UND QUALITÄTSMESSUNG FÜR REDUKTIONSMITTELSPEICHERSYSTEME

Ein Reduktionsmittelspeichersystem (30) für ein Verbrennungsmotorsystem (10) umfasst einen Speicherbehälter (120), der eine untere Wand (122), eine obere Wand (126) gegenüber der unteren Wand (122), eine Öffnung (132), die sich durch die obere Wand (126) erstreckt, und ein Reservoir (128), das durch einen hohlen Innenraum des Speicherbehälters (120) gebildet ist, aufweist; eine Filteranordnung (40); und eine Kopfanordnung (100). Die Filteranordnung (40) erstreckt sich durch die Öffnung (132) und ist konfiguriert, die Öffnung (132) abzudichten, und umfasst ein Filtermaterial (42). Die Kopfanordnung (100) erstreckt sich durch die Öffnung (132) und innerhalb der Filteranordnung (40). Die Kopfanordnung (100) umfasst Folgendes: (i) einen ersten Sensor (302), der konfiguriert ist, eine Qualität des innerhalb der Filteranordnung (40) enthaltenen Reduktionsmittels zu messen, und (ii) einen zweiten Sensor (304), der konfiguriert ist, einen Pegel des innerhalb der Filteranordnung (40) enthaltenen ...

Vorrichtung zur Messung eines Füllstandes einer Flüssigkeit in einem Behälter

Vorrichtung zur Messung eines Füllstandes einer Flüssigkeit (4) in einem Behälter (1) zur Speicherung der Flüssigkeit, insbesondere einer Flüssigkeit zur Reduktion von Stickoxiden in Abgasen von Brennkraftmaschinen, mit einem Ultraschallwandler (3) zur Erzeugung eines Ultraschallsignals und zum Empfangen des im Bereich eines Flüssigkeitsspiegels (34) reflektierten Ultraschallsignals, dadurch gekennzeichnet, dass im Innern (36) des Behälters (1) ein Umlenkmittel (35; 73) zur Umlenkung des Ultraschallsignals in Richtung des Flüssigkeitsspiegels (34) und ein zum Führen des Ultraschallsignals dienender Schallführungskörper mit einem zwischen dem Ultraschallwandler (3) und dem Umlenkmittel (35; 73) offenen Schallführungsbereich (51, 53) vorgesehen sind, wobei der Schallführungsbereich die Form eines durchgehend geschlitzten Rohres (53) oder die Form einer Halbschale (51, 75) hat.

Method for measuring level of liquid in container for motor vehicle, involves carrying measurement by measuring container that is arranged in container, where measuring container is connected with remaining volume of container over channel

The method involves carrying measurement by a measuring container that is arranged in a container. The measuring container is connected with a remaining volume of the container over a channel. The geometry of the channel is selected depending on the parameters for example viscosity of the liquid, a horizontal cross section of the measuring container, and a minimum length of the channel. An independent claim is included for measuring a level of a liquid in a container for a motor vehicle.

Vorrichtung zur Füllstandsmessung für ein fliessfähiges Medium in einem Behälter

Vorrichtung zur Füllstandsmessung für ein fließfähiges Medium in einem Behälter mit in den Behälter in das fließfähige Medium eintauchenden Rohren, welche koaxial derart angeordnet sind, dass sich zwischen innerem und äußerem Rohr sowie im Behälter einheitlich der zu messende Füllstand ausbildet, einem elektroakustischen Wandler, welcher in Abhängigkeit vom Füllstand Messsignale liefert, und einer Steuer- und Auswerteeinrichtung zum Betrieb des elektroakustischen Wandlers und zur Auswertung der vom elektroakustischen Wandler gelieferten Messsignale, dadurch gekennzeichnet, dass der elektroakustische Wandler (2) ringförmig mit mittiger Bohrung (11) ausgebildet ist und in radialem Abstand zu dem durch die Bohrung (11) gesteckten inneren Rohr (4) und in radialem Abstand zu dem äußeren, den Umfang des Wandlers (2) umgebenden Rohr (3) mittels federnder Kontakte (14, 15), welche elektrisch leitfähige Belegungen (12, 13) an der Oberseite und an der Unterseite des ringförmigen Wandlers (2) kontaktieren ...

Ultrasonic liquid level measurement device e.g. for an ammonia solution containing tank used in vehicle emissions reduction, whereby the sound guidance channel of the transducer is outside the main storage tank

Device for measuring liquid level in a container, comprises an ultrasonic transducer (3) for sending and receiving ultrasonic pulses. The sound guidance channel (2) and transducer are positioned outside the main reservoir tank (1).

Device for simultaneous determination of level and quality of urea water solution for diesel engine, has ultrasonic transducers arranged in tank such that ultrasonic signals emitted by ultrasonic transducers overlap each other

The device has first and second ultrasonic transducers (2, 3) arranged in a tank (1) containing a reducing agent solution, where the first ultrasonic transducer is parallel to a base (11) of the tank. The ultrasonic transducers are arranged such that an ultrasonic signal (21) emitted by the first ultrasonic transducer overlap an ultrasonic signal (31) emitted by the second ultrasonic transducer. A reference objective (4) reflects the ultrasonic signal emitted by the second ultrasonic transducer to the second ultrasonic transducer. Independent claims are also included for the following: (1) a method for simultaneous determination of level and quality of a reducing agent solution (2) a computer program for performing a method for simultaneous determination of level and quality of a reducing agent solution (3) a computer program product for storing a computer program for performing a method for simultaneous determination of level and quality of a reducing agent solution.

Flüssigkeitsmeßsystem für medizinische Zwecke

Verfahren zur Viskositätsmessung von viskosen Flüssigkeiten

... 1. Als die meistens verbreiteten Messeinrichtungen können Kapillarviskosimeter, Rotationsviskosimeter und Kugelviskosimeter genannt werden. Unter Annahme eines bestimmten Fließverhaltens der zu untersuchenden Flüssigkeiten kann dynamische Viskosität aus Messwertergebnis berechnet werden. Berechnungen der Viskosität aus Messwertergebnisse von allen oben erwähnten Geräten setzen voraus, dass für die Charakterisierung von untersuchten Flüssigkeiten reicht nur einen Punkt in der Fließkurve aus. Mit anderem Wort, setzen solche Viskositätsmessungen voraus, dass Flüssigkeiten newtonsche Flüssigkeiten sind. Jedoch gibt es zahlreiche flüssige Systeme wie Lösungen, Emulsionen und Suspensionen, die Abweichungen vom newtonschen Fließverhalten zeigen. 2. Gleichzeitige Messung der augenblicklichen Werte von veränderten, angelegten Kraft und veränderten Auslaufgeschwindigkeit während des Auslaufvorganges bringt die Möglichkeit, die augenblicklichen Werte der Flüssigkeitsviskosität als Funktion der Auslaufgeschwindigkeit ...

Verfahren zur Verarbeitung eines Echoprofils

Behälter für ein Eis-Wasser-Gemisch

Improved method for the measurement of liquid levels

... 952,839. Acoustic delay lines; ultrasonic distance measurement. ZAVODY V. I. LENINA PLZEN, NARODNI PODNIK. May 6, 1960 [May 6, 1959], No. 16038/60. Drawings to Specification. Headings H3U and H4D. In a method of measuring liquid level, an acoustic wave-guide is utilized in which " higher order mode (1, 1) waves " are excited and having an inner diameter defined by a mathematical treatment given in the Specification. It is stated that measurement errors arising from changes in e.g. ambient pressure changes are thereby minimized. Various arrangements for the positioning of the transducers on the wave-guide are outlined, Figs. 2 . . . 5 (not shown). Pulse-, amplitude-, or frequencymodulated ultrasonic waves may be utilized.

Wading appaatus and method

Passenger identification and monitoring

A system to identity and monitor contents and/or parts of the passenger compartment of a motor vehicle, by processing the signal received from the contents or parts using one or more techniques, includes neural networks or other pattern recognition systems and technologies including ultrasonic and electromagnetic radiation. The received signal is a combination of the reflection of a transmitted signal, the reflection of some natural signal within the vehicle, and also some signal emitted naturally by the object. A signal is emitted by transducer 132 and characteristic signals received by multiple transducers 131, 133. A neural network is trained to distinguish between adults, children, children in seats, plants, groceries and the like on the basis of these signals. Information obtained by the identification and monitoring system is then used to affect the operation of some other system in the vehicle such as the airbag, entertainment system, heating and air conditioning system, or the system ...

Liquid-level gauging

Method and apparatus for detecting an interface

Apparatus for detecting an interface 13 between two media of a heterogeneous system comprising transmission means 21 to send a signal through one medium from the transmission means to the interface 13, measuring means to measure the time taken for the signal to be reflected to a reception means 21 and processing means to use said time to determine the distance of the interface from the transmission means. The signal is produced by a transducer 21 located at one end of a wave guide 20 which passes through and contains said one medium. The wave guide comprises reflecting means 24 operative to reflect a signal from the transmission means to a second interface 17 and to then reflect a reflected signal from the second interface 17 to the reception means, in order to determine the thickness of a second interface.

STATE OF FILL-DETERMINING APPARATUS

Wading vehicle including a camera

A motor vehicle includes imaging apparatus, specifically, a camera 120L, 12R. The apparatus is operable to provide a wade image to an occupant of the vehicle being an image of at least a portion of an exterior surface of the vehicle A that is exposed to liquid when wading. The wade image A is arranged to allow the occupant to determine whether the level of the liquid is below a prescribed level 130. The image may include a superimposed liquid level indicator, see fig 3 ...

Quantity gauging system

An aircraft fuel quantity gauging system has a number of probes 10 and 11 within a tank 1 to measure the height of fuel 2 at different locations. Each probe 10 and 11 includes a still well 12 and an ultrasonic transducer 15 and 14 mounted at the top and bottom of the still well. The lower transducer 14 transmits pulses of acoustic energy upwardly through the fuel 2 to its surface 3 and measures the time of travel back of the reflected pulse back to the transducer. This is used to derive a first, bottom-up measure of fuel height. Similarly, the upper transducer 15 transmits pulses down through air 4 to the fuel surface 3 to derive a second, top-down measurement. These are compared to check for correct operation of the probes.

Acoustic fluid-gauging system

Liquid level gauge

An ultrasonic liquid level gauge 10 comprises two solid surfaces 42 and 50 in opposed relationship, and a plane reflecting surface 32 supported between the surfaces so as to be slightly below the liquid level 18 in use. A Lamb wave is caused to propagate down one surface 42, undergoing mode conversion to compression waves in the liquid 16 which reflect off the reflecting surface 32 onto the other surface 50, undergoing mode conversion to a Lamb wave propagating up the other surface 50. The reflecting surface 32 may be supported by a float 30, and the solid surfaces 42 and 50 may be opposite walls of a rectangular tube 12. ...

Method and apparatus for characterising a medium

Methods and apparatus for determining the presence of an interface region, such as an interface region defined between first and second layers of a medium, for example, mediums comprising hydrocarbons, such as oil and/or gas. An interface region can be determined in a pipeline, or the like, by comparing a flight characteristic, for example, the ratio of a time of flight against distance travelled of a first acoustic signal passing through the medium with a flight characteristic of a second acoustic signal passing through the medium. In cases when these flight characteristics are determined to be different, the presence of an interface can be determined. A conduit 100 is provided with a first transmission path through first layer 110 and second layer 120 separated by interface region 115 and of known distance D1 between transmitter 210a and receiver 210b. Second transmitter 220a and second receiver 220b are configured to transmit and receive a second interface signal across the second transmission ...

Apparatus and method of fluid level measurement

WATER TREATMENT APPARATUS

DETERMINING AMOUNT OF SUBSTANCE IN VESSEL

LIQUID STORAGE TANK CONTENTS GAUGE

CONTROL METHOD OF A FLOTATION MACHINE THAT IS USED IN METALLURGICAL PROCESSES

Control method of a flotation machine that is usedin metallurgical processes

Control method of a flotation machine that is usedin metallurgical processes

Control method of a flotation machine that is usedin metallurgical processes

WASTE WATER SEDIMENTATION PLANT

ANORDNUNG ZUM MESSEN VON ENTFERNUNGEN, INSBESONDERE ZUM MESSEN VON PEGELSTAENDEN

Verfahren zum Bestimmen der Schüttgutmenge in einem stehenden Behälter

Es wird ein Verfahren zum Bestimmen der Schüttgutmenge in einem stehenden Behälter (1) beschrieben, der einen bodenseitigen Austragstrichter (3) bildet und im Deckenbereich einen gegenüber dem Austragstrichter (3) ausgerichteten Füllstandsensor (5) aufweist, wobei der Abstand zwischen der Schüttgutoberfläche und dem Füllstandsensor (5) durch Bestimmung der Laufzeit von an der Schüttgutoberfläche reflektierten, hochfrequenten Messignalen gemessen und mithilfe der gemessenen Abstände die Schüttgutmenge im Behälter (1) anhand von abgespeicherten Daten der Behälterabmessungen berechnet wird. Um einfache Verfahrensbedingungen sicherzustellen, wird vorgeschlagen, dass zur Bestimmung einer durch eine entnahmebedingte Ausbildung einer trichterförmigen Schüttgutsenke (10) definierten Schüttgutrestmenge (11) der Abstand des Bodens (12) der Schüttgutsenke (10) vom Füllstandsensor (5) gemessen und die Schüttgutrestmenge (11) im Behälter (1) anhand der abgespeicherten Daten der Behälterabmessungen sowie ...

MEASURING INSTRUMENT AND PROCEDURE FOR THE DETERMINATION OF THE LEVEL IN TANKS, PREFERABLY FOR SERVICE STATIONS.

ARRANGEMENT FOR MEASURING THE QUANTITY ALTERATION OF A LIQUID, IN PARTICULAR OIL IN AN INTERNAL-COMBUSTION ENGINE.

APPARATUS AND PROCEDURE FOR THE AUTOMATIC FUELLEN OF A CONTAINER WITH A LIQUID.

DEVICE FOR THE LEVEL MEASUREMENT OF A BOUNDARY LAYER IN A LIQUID WITH FLOATING PARTICLES

Threaded connection for a length-adjustable connecting rod with different thread pitch

Die Erfindung betrifft eine längenverstellbare Pleuelstange (1) für einen Kolbenmotor, wobei die Pleuelstange (1) ein erstes Pleuelauge (7) zur Aufnahme eines Kolbenbolzens und ein zweites Pleuelauge (4) zur Aufnahme eines Kurbelwellenzapfens aufweist, wobei der Abstand zwischen dem Kolbenbolzen und dem Kurbelwellenzapfen in Längsrichtung (A) der Pleuelstange (1) mittels einer hydraulischen Steuereinrichtung (21) mit mindestens einer Zylinder-Kolben-Einheit (10) mit zumindest einem Zylinder (12) und zumindest einem Verstellkolben (9) einstellbar ist. Dabei sind der Verstellkolben (9) der Zylinder-Kolben-Einheit (10) und das erste Pleuelauge (7) mittels zumindest einer Schraubverbindung (37, 38) verbunden, die ein erstes Gewinde (35) mit einer ersten Gewindesteigung und ein mit dem ersten Gewinde (35) zusammenwirkendes zweites Gewinde (36) mit einer zweiten unterschiedlichen Gewindesteigung aufweist. Darüber hinaus betrifft die Erfindung einen Kolbenmotor mit einer solchen längenverstellbaren ...

Es wird ein Sensorsystem (1) zur Messung eines Füllstands beschrieben aufweisend - ein Gehäuse (2), - eine Elektronik-Schaltung (4), - einen Ultraschall-Distanzsensor (6), wobei die Elektronik-Schaltung (4) und der Ultraschall- Distanzsensor (6) in dem Gehäuse (2) angeordnet sind, und wobei das Sensorsystem (1) dazu ausgebildet ist mittels einer Echo-Laufzeit eines Ultraschallbursts in der Luft eine Distanz zwischen dem Sensorsystem (1) und einer Oberfläche eines Materials in einem Behältnis (24) zu messen. Weiterhin werden eine Verwendung eines Sensorsystems (1) zur Messung eines Füllstands, eine Vorrichtung (30) zur Messung eines Füllstands sowie ein Verfahren zur Messung eines Füllstands beschrieben.

PROCEDURE FOR QUANTITY-REFERRED DISPOSING OF OF HOUSEHOLD AND GEWERBEMUELL AND QUANTITY-REFERRED ENTSORGUNGSYSTEM FOR SUCH GARBAGE.

PROCEDURE AND DEVICE FOR THE DETERMINATION OF A LIQUID HEIGHT BY ULTRASONIC IMPULSES

Feeler for the indication of the level of liquid by ultrasonic

LEAKAGE DETECTOR IN A LIQUID HYDROCARBON DISTRIBUTOR

Ultrasound level detection using a dynamic threshold

System and method for measuring well flow rate

The present invention discloses an improved system for measurement of the liquid flow rate and totalized liquid production of a producing well. In the method of the present invention, liquid production rate in a pumping well is determined by calculation based upon wellbore geometry and continuously monitoring the depth of the fluid level within the wellbore. It is applicable to any pump lifted well where it is possible to shut the pump off periodically. Accuracy is enhanced with this method by properly accounting for pump leakage and where pump leakage is either known or can be estimated within reasonable limits or where it is measured during the pump shut off cycle.

Method for measurement of physical conditions in liquid-containing tanks

Improvements relating to pulse echo distance measurement

METHOD AND APPARATUS FOR MEASURING THE HEIGHT OF FILLING MATERIAL ON A SURFACE, SUCH AS WITHIN A CONTAINER

METHOD AND ARRANGEMENT FOR SIGNAL TRANSMISSION IN ULTRASONIC ECHO SOUNDING SYSTEMS

SONIC AND ULTRASONIC DISTANCE MEASURING DEVICE

Sonic and ultrasonic distance measuring device The sonic or ultrasonic distance measuring device used for example to measure the filling level in a container comprises an electroacoustic transducer which operates alternately as transmission transducer for the transmission of sonic or ultrasonic pulses and as reception transducer for the reception of the reflected echo pulses. Connected to the transducer is a signal processing circuit which includes an amplifier with controllable gain and a threshold value discriminator. A gain control circuit controls the gain of the amplifier during a predetermined period after the start of each transmission pulse in accordance with a stored function which is fixed in accordance with the dying-down behaviour of the transducer so that the electrical reception signals originating from the dying-down of the transducer after amplification are smaller than the threshold value of the threshold value discriminator but are as close as possible to said threshold ...

ULTRASONIC APPARATUS FOR DETERMINING THE AMOUNT OF LIQUID IN A CONTAINER OF KNOWN VOLUME

ULTRASONIC APPARATUS FOR DETERMINING THE AMOUNT OF LIQUID IN A CONTAINER OF KNOWN VOLUME An ultrasonic apparatus for determining the amount of liquid in a container of known volume include at least a pair of ultrasonic transducers which are mounted a known distance apart relative to the liquid surface so that the ultrasonic energy reflected from the liquid surface traverses the following paths: 1) from first of the transducers vertically to the liquid surface, and 2) from the first transducer to the liquid surface and then to the second transducer. A circuit measures the time of travel T corresponding to path 1 above, and T1 corresponding to one-half the travel time of path 2) above. The height H of liquid above the transducers is determined by solving the equation: where S is the known distance between transducers, T is the travel time of ultrasonic energy directly or vertically to the liquid surface and T' one-half the travel time between the two transducer reflected off the liquid ...

FILLING LEVEL METER

The filling level meter for measuring the filling level in a container includes a transmitting and a receiving arrange ment which directs sonic or ultrasonic pulses onto the filling material surface and receives the backscattered pulses reflected by the filling material surface and converts them to electrical reception signals. Connected to the transmitting and receiving arrangement is an evaluating circuit which in a signal processing path generates an envelope signal corresponding to the envelope of the reception signals, digitizes sampled values of the envelope signal, stores in a memory the digitized sampled values for creating a distance-dependent or travel-time-dependent amplitude profile of the measurement distance and evaluates the amplitude profile for determining the travel time of the most probable useful echo signal. Parallel to the signal processing path for generating the envelope signal, in the evaluating circuit a frequency detection of the echo signals is carried out by ...

FILL LEVEL MEASURING DEVICE AND METHOD FOR FILL LEVEL MEASUREMENT USING THE TRAVEL TIME PRINCIPLE

Disclosed is a filling-level measurement device (5) for measuring the filling level of a filling material (1) in a container, and a method for measuring the filling level by means of said filling-level measurement device (5) which can measure the filling level in a reliable and directly autonomous manner when restarted, comprising at least one antenna (11) for transmitting transmission signals (S) and for receiving echo signals (E), a signal processing unit (13) which is used to derive an echo function from the echo signals (E) thus received, containing the amplitudes (A) of the echo signal according to propagation time, a memory (17) for storing container-specific data in a table whose columns are used to respectively receive an echo function, whereby the echo functions in the columns are filed in a specific order corresponding to the filling levels associated with the respective echo functions, also comprising an evaluation unit (19) which can access the table in order to determine the ...

ARRANGEMENT FOR MEASURING THE LEVEL OF CONTENTS IN A CONTAINER

BATCH SENSOR FOR GLASS-MELTING FURNACES

METHOD FOR EVALUATING THE MEASUREMENT SIGNALS OF A PROPAGATION-TIME BASED MEASUREMENT DEVICE

The invention relates to a method which allows especially the extrapolation of the measured value at the upper and lower end of a measuring range where normally no direct measurement is possible by superposition of interfering signals, for example by reflection on a radar antenna. In the presence of strong interference signals, which are for example caused by the natural resonance of the container or a neck in which the measuring device is mounted, the direct level indicator signal can be regularly used if it has a high amplitude caused by a superposition with the interfering signal, and can therefore be detected. If the direct level indicator signal lies between two interfering signals and does not extend beyond these, the level indicator value can be interpolated by the shift of the signal from the point of reflection. The inventive method automatically adapts itself to a prevailing measuring situation while according to known methods the user has to decide between a measurement via a ...

NON-CONTACT SENSOR FOR DETERMINING A F.O.G. LEVEL IN A SEPARATOR, INCLUDING ULTRASONICS

An apparatus having a layer of fats, oils and grease (F.O.G) on water includes a tank having an inlet and an outlet. The inlet connects to a source of F.O.G.-laden effluent and the outlet connects to a sewer pipe so that the outlet defines a normal static water level for F.O.G. and effluent in the tank. A sensor mounted above the static water level determines a distance from the sensor to a top of F.O.G. within the tank, so that a thickness of the F.O.G. in the tank can be determined. If the sensor is LIDAR, sensing may be at about 940 nm. When the F.O.G. is sensed to be above a threshold, the apparatus generates signals to remove the F.O.G. Ultrasonic sensing may be used.

METHOD AND DEVICE FOR ACOUSTIC MEASURING IN A PIPELINE

The invention relates to a method for acoustic measuring in technical hollow spaces, for example, for measuring reflection points along long pipelines. The method begins with establishing a broadband exciter frequency range. This is followed by establishing interference frequencies which should not be in the exciter signal, and generating a precursor signal over the frequency range with the omission of the interference signals. Then the precursor signal is coupled into the pipeline and a precursor reflection signal reflected out of the pipeline is received. The precursor signal is compared with the precursor reflection signal and damping frequencies are determined at which the precursor signal on the measuring path along the pipeline is damped much more than the average damping of the entire precursor signal. Then an exciter signal is generated over the exciter frequency range with the omission of the interference frequencies and the damping frequencies. This is followed by coupling the ...

ULTRASONIC FLUID MEASUREMENT PROBE WITH ULTRASONICALLY WELDED BASE CAP

An apparatus and method of measuring a level of fluid in a container and of enhancing reliability of an ultrasonic fluid measurement probe. A base comprises a transducer chamber, wherein the transducer chamber comprises a transducer chamber floor, a transducer chamber edge, and transducer chamber walls extending from the transducer chamber floor to the transducer chamber edge. An ultrasonic transducer is attached to the transducer chamber floor. A cap is welded to the transducer chamber edge such that the cap, along with the transducer chamber floor and the transducer chamber walls, encloses the transducer chamber to form an enclosed air space between the ultrasonic transducer and the cap.

EXTERNAL SOLIDS LEVEL DETECTION FOR A COLLECTION VESSEL

A mixed fluid collection apparatus includes a collection vessel configured to contain a fluid comprising a first component and a second component. The collection vessel includes an outer shell within which the fluid is contained. An emitter is coupled to an outside of the outer shell at a first position, and is configured to emit an acoustic signal into the outer shell. A receiver is coupled to the outside of the outer shell at a second position, with the receiver being configured to detect the acoustic signal emitted by the emitter. A controller is coupled to the emitter and the receiver. The controller is configured to determine a time between when the acoustic signal is emitted and when the acoustic signal is detected, and the controller is configured to determine a level of the second component in the collection vessel based on the time.

METHOD FOR PULSE OFFSET CALIBRATION IN TIME OF FLIGHT RANGING SYSTEMS

A pulse offset calibration method for a pulse-echo level measurement system. The pulse-echo level measurement system includes a transducer for transmitting calibration acoustic pulses and receiving echo pulses. A receiver converts the echo pulses into corresponding pulse profile signals having a leading edge. A static delay interval is defined on the leading edge corresponding to the time interval between in the reception of the echo pulse and the response by the receiver. A dynamic delay interval is defined on the leading edge corresponding to the time response characteristics of the transducer and the receiver. The static delay interval and the dynamic delay interval are summed to determine the offset time interval for the echo pulse. The offset time interval is subtracted from the measurements to provide the true duration for the time of flight.

SELF-CALIBRATING ULTRASONIC-BASED MONITORING SYSTEM

Systems, methods, and devices for determining distances inside a liquid filled container such as an oil tank. A combined ultrasonic signal receiver/transmitter with an attached reflector is immersed in the liquid. An ultrasonic signal is then transmitted from the receiver/transmitter and reflected ultrasonic signals are then received. One of the reflected signals is reflected off of the attached reflector and this reflected signal is then used to determine the signal's velocity and to thereby self-calibrate the system. Once the velocity in the liquid is known, the other reflected signals can then be used to determine the distance between the receiver/transmitter and at least one point of interest in the container.

ULTRASONIC FUEL LEVEL MONITORING SYSTEM INCORPORATING AN ACOUSTIC LENS

An ultrasonic liquid level monitoring system includes an ultrasonic transducer unit that is mountable to a tank. The unit has an emitter to generate an ultrasonic beam passing through the wall of the tank. The emitter further receives an echo of the ultrasonic beam off a liquid surface. An acoustic lens is disposed between the emitter and the tank wall to receive and shape the ultrasonic beam to compensate for lensing effects of the tank wall.

HANGER FOR SUSPENDING EQUIPMENT IN A STORAGE TANK

A hanger fog suspending equipment within an existing liquid storage tank includes a longitudinal channel having one end adapted to be faced adjacent to the uppe r end of a receiving riser pipe and a second end adapted to project within the tank. A parallel a rm assembly is foldable at the second end of the channel and is movable longitudinally in opposition to biasing springs. The arm assembly engages an interior tank surface at opposite sides of the channel to fix the location from which suspended equipment is hung. This isolates the suspension point for the equipment from dimensional changes that might occur in the channel supporting it along the upright riser pipe.

TANK MONITORING SYSTEM

TANK MONITORING SYSTEM The height of a liquid level from the bottom of a storage tank or the like is accurately determined by using a probe with dual isolated channels to measure the time for an acoustic signal to travel between fixed submerged points and from a transducer in one of the channels to the surface of the liquid. Elapsed time measurements are converted to liquid volume using predetermined velocity-temperature values to compensate for temperature variations in the tank.

ULTRASONIC TRANSDUCER

A small, compact, easily mountable ultrasonic transducer for measuring the filling level in a container is provided, which transducer transmits virtually no oscillation energy to the container, having a can-shaped transducer housing (1), an electronics housing (2) connected to the transducer housing (1), a transducer element (4), arranged in the transducer housing (1), for the transmission and reception of ultrasonic pulses, a union ring (3) for the sound-decoupling securing of the ultrasonic transducer on the container, in which ring the transducer housing (1) is supported coaxially with respect to the union ring (3) and is fixed therein against displacement in the axial direction, and two resilient elements (7, 8) which are arranged between the transducer housing (1) and the union ring (3) and by means of which the transducer housing (1) and the union ring (3) are held spaced apart from each other in the radial direction in such a way that there is no direct mechanical coupling between ...

BLOCK COPOLYMERS

An amphiphilic block copolymer including polyethylene oxide or polypropylene oxide and a hydrophobic block segment useful in making polymeric articles, and methods of making such articles.

Processor Apparatus and Method for a Process Measurement Signal

Method for Calibration in Level Measurement

Verfahren zum Registrieren des Flüssigkeitsniveaus in einer Quelle und Einrichtung zur Durchführung dieses Verfahrens

Verfahren zur akustischen Messung der Niveauhöhe einer Flüssigkeit

Dispositif à ultra-sons pour la mesure de la position d'un niveau liquide

Dispositif de mesure par ultra-sons de déplacements

Device for measuring distances, particularly for determining a filling level, by echo sounding by means of sound waves in a gaseous medium

Process and device for measuring the rise rate of an expanding polymer foam

SOUND AND/OR ULTRASONIC DISTANCE MEASURING EQUIPMENT.

PROCEDURE AND ARRANGEMENT FOR THE SIGNAL TRANSMISSION WITH ULTRASONIC DEPTH FINDER DEVICES.

Ultrasonic sensor and device to its mounting plate.

Die Erfindung betrifft einen Ultraschallsensor (1) umfassend einen Ultraschallwandler (11) und eine Sensorelektronik, die in einem quaderartigen Sensorgehäuse (3) angeordnet ist, dadurch gekennzeichnet, dass der Ultraschallsensor eine Vielzahl von Befestigungsmitteln aufweist und das Sensorgehäuse (3) Schmalseiten (7, 7´, 9, 9´) aufweist, deren effektive Breite b vorzugsweise kleiner ist als 9 mm, und dass der Ultraschallwandler (11), insbesondere im Bereich einer Ausnehmung, an einer dieser Schmalseiten (7, 7´, 9, 9´) am Gehäuse (3) gehalten ist.

Ultrasonic sensor and a support device therefor.

Die Erfindung betrifft einen Ultraschallsensor (1) umfassend einen Ultraschallwandler (11) und eine Sensorelektronik, die in einem quaderartigen Sensorgehäuse (3) angeordnet ist, dadurch gekennzeichnet, dass der Ultraschallsensor eine Vielzahl von Befestigungsmitteln aufweist und das Sensorgehäuse (3) Schmalseiten (7, 7´, 9, 9´) aufweist, deren effektive Breite b vorzugsweise kleiner ist als 9 mm, und dass der Ultraschallwandler (11), insbesondere im Bereich einer Ausnehmung, an einer dieser Schmalseiten (7, 7´, 9, 9´) am Gehäuse (3) gehalten ist.

Bulk material e.g. powder bulk material, filling levels detecting method, involves processing running time of waves as primary variable, and detecting secondary variable, and detecting filling level of bulk material based on variables

The method involves emitting ultrasonic waves in a direction of a container opening by an ultrasonic transducer (15) of an ultrasonic sensor (1). The ultrasonic waves are partially reflected at a surface (29) of a bulk material (27) and are detected. Running time of the ultrasonic waves is processed as primary measuring variable. A secondary measuring variable influenced by characteristics of a container (23) or by a position of the container is detected. Filling level of the bulk material is detected based on the primary and secondary measuring variables. An independent claim is also included for a device for detecting filling levels of a bulk material in a container.

Filling degree detection system for detecting distances to surfaces of e.g. domestic refuse, in refuse collection vessels, has transmission unit transmitting information of filling degree to central guidance system

The system (7) has a transmission element (6) provided with three sensors (5), which are arranged in a plane (4) above materials i.e. refuse parts (1), to be detected. A measuring detection electronics is provided with an integrated transmission unit, which measures different filling levels. A measuring detection unit evaluates filling degree, and the transmission unit transmits information of the filling degree to a central guidance system. The transmission element forms zone detection at a container i.e. refuse collection vessel (2) that is made of metal, wood or plastic.

METHOD OF CONTROL OF FLOTATION MACHINE, USED IN METALLURGICAL PROCESSES

METHOD OF CONTROL OF FLOTATION MACHINE, USED IN METALLURGICAL PROCESSES

Ultrasonic fuel-gauging system and method, and manufacturing method of fuel box

System and method for sensing liquid levels

Water depth measurement method for medium across ice layer

Piezoelectric transducer device

Systems and methods of determining a quality and/or depth of diesel exhaust fluid

SYSTEM AND METHOD OF DETERMINING A QUALITY AND A QUANTITY OF A FLUID OF TANK WITH A BASE

Systems and methods of determining a quality and/or depth of diesel exhaust fluid

A system for determining a quality and/or depth of a fluid in a tank. The system includes a controller, one or more transducers, and a temperature sensor. A fixed distance transducer transmits a sound wave toward a fixed surface. A depth transducer transmits a sound wave which reflects off a surface of the fluid. The temperature sensor senses a temperature of the fluid in the tank and provides an indication of the temperature to the controller. The controller measures the elapsed time for the sound waves to travel between the fixed distance transducer and a fixed surface and the elapsed time for the sound waves to travel between the depth transducer and the surface of the fluid held within the container. Using the elapsed times and the temperature of the fluid, the controller is able to determine a quality and the depth of the fluid.

Multichamber Ultrasonic Sensor for Determining a Liquid Level

An ultrasound sensor arrangement for determining a fluid level includes an elongated housing with a lid and a floor, and a measuring chamber in the housing, in which a fluid has the same level as the fluid outside the measuring chamber, and an ultrasound transmitter/receiver on the floor within or outside the housing in the area of the measuring chamber. Transmitted sound signals from the ultrasound transmitter/receiver reflect from the fluid surface and are received by the ultrasound transmitter/receiver to determine the fluid level from the signal transit time. At least one further chamber is arranged at least partially in front of or around the measuring chamber. The outermost chamber forms the inlet chamber. The several chambers are connected to each other for fluid flow.

LIQUID LEVEL SENSOR WITH IMPROVED TEMPERATURE RANGE

An ultrasonic liquid-height detector employs conductive rods extending from a housing, and corresponding transducers, into a liquid, where elastic seals surround the rods at their exit point from the housing. Acoustic crosstalk between the rods through the seals and the housing (rather than through the liquid) is minimized by displacing the seals from each other as measured through the housing to increase a path length through the housing so that the crosstalk energy is delayed with respect to the direct energy indicating liquid height. A sampling window is positioned to sample transmitted sound across the rods at a time before the arrival of the crosstalk energy. 1. A liquid level sensor comprising:a housing holding an ultrasonic transmitting transducer and an ultrasonic receiving transducer;first and second ultrasonic conducting rods each communicating respectively with one of the transmitting transducer and receiving transducer and extending out of apertures in the housing to be received within a liquid to be measured, the ultrasonic conducting rods being separated across a gap receiving liquid therebetween;seals between the first and second ultrasonic conducting rods and corresponding apertures in the housing;wherein the seals are positioned to provide:(a) a first acoustic delay along an acoustic path from the transmitting transducer through the first ultrasonic conductive rod through a first seal through the housing to the second seal through the second ultrasonic conducting rods to the receiving transducer that is longer than:(b) a second acoustic delay along an acoustic path from the transmitting transducer through the first ultrasonic conductive rod through the liquid to the second ultrasonic conducting rod to the receiving transducer for at least one liquid level with respect to the ultrasonic conductive rods.2. The liquid level sensor of wherein the housing includes a first and second sleeve extending along the ultrasonic conducting rods holding the seals ...

Ultrasonic Reactor Water Level Measuring Device and Evaluation Method

An ultrasonic reactor water level measuring device and an evaluation method are provided and prevent a reduction in the measurement accuracy of a water level that is in a wide measurement range. The ultrasonic reactor water level measuring device includes an upper tube extending from a gas phase portion in a reactor, a lower tube extending from a liquid phase portion in the reactor, measurement tubes connected to each other and arranged at multiple stages between the upper tube and the lower tube, and units for generating and receiving ultrasonic waves, the units being arranged at bottom portions of the measurement tubes. The ultrasonic reactor water level measuring device measures levels of water within the measurement tubes and calculates a water level within the reactor from the sum of the measured water levels, the sum excluding an overlapped part of the measurement tubes. 1. An ultrasonic reactor water level measuring device comprising:an upper tube that extends from a gas phase portion in a reactor;a lower tube that extends from a liquid phase portion in the reactor;measurement tubes that are connected to each other and arranged at multiple stages between the upper tube and the lower tube; andunits for generating and receiving ultrasonic waves and measuring levels of water within the measurement tubes, the units being arranged at bottom portions of the measurement tubes,wherein a water level within the reactor is calculated from the sum of the measured water levels, the sum excluding the height of an overlapped part of the measurement tubes.2. The ultrasonic reactor water level measuring device according to claim 1 , further comprisingseparation valves that are arranged in the middle of the upper and lower tubes,wherein when pressure on the side of the measurement tubes is equal to or lower than a set value, the separation valves are automatically closed.3. The ultrasonic reactor water level measuring device according to claim 1 ,wherein ultrasonic probes are ...

Control method of a flotation machine that is used in metallurgical processes

The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from an aqueous slurry that contains these particles. The flotation machine includes a flotation cell ( 1 ), and a rotor ( 2 ) that is inside the flotation cell. The rotor ( 2 ) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell ( 1 ) is determined, and the rotation speed of the rotor ( 2 ) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device ( 5 ) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device ( 4 ) is arranged to adjust the rotation speed of the motor ( 3 ), which rotates the rotor ( 2 ), on the basis of the measuring result of the measuring device ( 5 ) to remove the solid matter from the bottom of the cell.

System and Method for Measuring Well Flow Rate

The present invention discloses an improved system for measurement of the liquid flow rate and totalized liquid production of a producing well. In the method of the present invention, liquid production rate in a pumping well is determined by calculation based upon wellbore geometry and continuously monitoring the depth of the fluid level within the wellbore. It is applicable to any pump lifted well where it is possible to shut the pump off periodically. Accuracy is enhanced with this method by properly accounting for pump leakage and where pump leakage is either known or can be estimated within reasonable limits or where it is measured during the pump shut off cycle.

Methods and apparatus for detection of fluid interface fluctuations

Dynamic characteristics of a liquid surface ( 160 ) are measured by sending acoustic signals ( 140 ) to or more target areas ( 162 a - 162 c ) on the liquid surface and receiving said acoustic signals ( 150 a - 150 c ) after reflection from the target area. The detected signals are processed to measure phase shift between the sent and received acoustic signals, the measured phase shift varying over time. The varying phase shift is used to indicate fluctuations over time in the local height of the liquid surface in the target area. The liquid may be water, effluent etc. flowing in a channel or conduit. With suitable calibration, the measured height fluctuations can be used to infer flow characteristics such as surface roughness, wave height, flow depth, flow velocity, volumetric flow rate, shear stress, sediment transport. Using an array of receivers and target areas, additional spatial and temporal characteristics of the surface and the flow can be measured.

DELIVERY UNIT WITH FILL LEVEL SENSOR FOR A LIQUID ADDITIVE, TANK FOR STORING LIQUID ADDITIVE, MOTOR VEHICLE AND METHOD FOR MONITORING A FILL LEVEL

A delivery unit for extracting liquid additive from a tank can be mounted on the tank and includes a fill level sensor for measuring the fill level of liquid additive in the tank. The fill level sensor is set up to emit waves into an emission region of the tank, and the fill level can be measured by using a propagation time measurement of the waves reflected by a liquid surface and striking the fill level sensor again. At least one first reference surface extends at least partially into the emission region and is at a first distance from the fill level sensor. The at least one first reference surface is disposed on a separate calibration component mounted on an outer side of a housing of the delivery unit. A tank for storing liquid additive, a motor vehicle and a method for monitoring a fill level are also provided. 1. A delivery unit configured to be mounted on a tank for extracting liquid additive from the tank , the delivery unit comprising:a housing having an outer side;a separate calibration component mounted on said outer side of said housing;a fill level sensor configured to measure a fill level of liquid additive in the tank, said fill level sensor configured to emit waves into an emission region of the tank permitting the fill level to be measured by using a propagation time measurement of the waves being reflected by a liquid surface and striking said fill level sensor again; andat least one first reference surface disposed on said separate calibration component, extending at least partially into said emission region and being disposed at a first distance from said fill level sensor.2. The delivery unit according to claim 1 , which further comprises a second reference surface extending at least partially into said emission region and disposed at a second distance from said fill level sensor.3. The delivery unit according to claim 1 , wherein said fill level sensor is an ultrasound sensor.4. The delivery unit according to claim 1 , wherein said at least one ...

MONITORING FLOW PARAMETERS WITH NATURAL EXPRESSIONS

A monitoring apparatus is disclosed that includes a.) at least one acoustic pickup, b.) a sound pressure sensor acoustically coupled to the at least one acoustic pickup, and c.) a computing device interfaced to the sound pressure sensor. The at least one acoustic pickup may be submerged in or located in proximity to flowing fluid. The sound sensor is configured to acquire sound intensity waveforms naturally generated by the flowing fluid as a source of data patterns for training the apparatus as well stimuli used to generate responses about flow conditions. The computing device is configured to quantify flow parameters of the flowing fluid from sound utterances and visual appearances intrinsically expressed by the flow using machine learning models. 1. A monitoring apparatus comprising:a.) at least one acoustic pickup,b.) a sound sensor acoustically coupled to the at least one acoustic pickup, andc.) a computing device interfaced to the sound sensorwherein the at least one acoustic pickup is submerged in or located in proximity to flowing fluidthe sound sensor is configured to acquire sound intensity waveforms naturally generated by the flowing fluid as an input data source to algorithms trained by machine learning to quantify flow parameters, andthe computing device is configured to process expressions native to the flowing fluid for the purpose of predicting flow parameters by listening to sound utterances and observing visual appearances.2. The monitoring apparatus of claim 1 , wherein the fluid is water.3. The monitoring apparatus of claim 2 , wherein the sound sensor and the at least one acoustic pickup are configured to recognize sound with frequencies starting as low as 0 Hz.4. The monitoring apparatus of claim 2 , wherein parameters of the flowing water comprise one or more of level claim 2 , width claim 2 , cross section claim 2 , direction claim 2 , turbulence claim 2 , velocity claim 2 , volumetric rate claim 2 , volume claim 2 , and obstruction.5. The ...

SYSTEM AND METHOD FOR MEASURING A SIGNAL PROPAGATION SPEED IN A LIQUID OR GASEOUS MEDIUM

A system and a method for measuring a signal propagation speed in a liquid contained in a vessel or in a gaseous medium contained in the same vessel above the surface of the liquid are proposed. A transmitter transmits a first signal in a first direction which is at an acute or right angle to a first reflective surface, wherein the first reflective surface reflects the first signal so that it travels in a second direction is received by a first acoustic or electromagnetic receiver. The transmitter transmits a second signal in a predetermined third direction which is at an acute angle to the first direction, where the first or a second reflective surface reflects the second signal so that it travels in a predetermined and angular fourth direction with respect to the first or second reflective surface and is received by the first or a second acoustic or electromagnetic receiver. The speed of sound is then determined under the assumption that both the first and the second signals travel at the same average speed. 1. System for measuring a signal propagation speed in a liquid which is contained in a vessel , or in a gaseous medium which is contained in the same vessel above the surface of the liquid , the system comprisingat least one acoustic or electromagnetic transmitter mounted on one side of the liquid surface for transmitting a signal into the liquid or into the gaseous medium,at least one acoustic or electromagnetic receiver mounted on the same side of the liquid surface as the at least one transmitter for receiving a reflection of the signal,at least one electronic control and data processing unit for controlling operation of the at least one transmitter and of the at least one receiver and for determining the signal propagation speed from a time of flight of the signal,whereinthe at least one transmitter is arranged to transmit a first signal in a first direction which is at an acute or right first angle to a first reflective surface, along which first ...

SYSTEM AND METHOD FOR MEASURING A SPEED OF SOUND IN A LIQUID OR GASEOUS MEDIUM

A system and a method for measuring a speed of sound in a liquid contained in a vessel or in a gaseous medium contained in the same vessel above the surface of the liquid. The method comprises: transmitting a first acoustic signal into the vessel to travel inside a first travelling plane. Emitting a second acoustic signal into the wall of the vessel to travel inside the wall of the vessel along a perimeter of the first travelling plane until it is received and obtaining a first time of flight of the first acoustic signal and a second time of flight of the second acoustic signal and obtaining a speed of sound in the vessel wall from a data memory. Determining the speed of sound in the liquid or in the gaseous medium from the length of the travelling path of the first acoustic signal and from the first time of flight. 1. System for measuring a speed of sound in a liquid contained in a vessel or in a gaseous medium contained in the same vessel above the surface of the liquid , the system comprisinga first acoustic transmitter mounted on one side of the liquid surface for transmitting a first acoustic signal into the liquid or into the gaseous medium to travel inside a first travelling plane,a first acoustic receiver mounted on the same side of the liquid surface as the first transmitter for receiving the first acoustic signal,at least one electronic control and data processing unit for controlling operation of the transmitter and of the receiver and for determining the speed of sound from a time of flight of the first acoustic signal,whereinthe first transmitter or a second transmitter is further arranged to emit a second acoustic signal in form of an acoustic wave into the wall of the vessel to travel inside the wall of the vessel along a perimeter of the first travelling plane until it is received by the first acoustic receiver or by a second acoustic receiver which is placed at a predetermined distance from the first or second transmitter, respectively; obtain a ...

SYSTEM AND METHOD FOR NON-INTRUSIVE AND CONTINUOUS LEVEL MEASUREMENT IN A CYLINDRICAL VESSEL

An application relates to a system and a method for non-intrusive and continuous level measurement in a cylindrical vessel. The system comprises an ultrasonic transducer for generating an ultrasound wave and for emitting it into the vessel wall, and an electronic control and data processing unit (ECDP) for controlling operation of the transducer and for determining the liquid level from a time of flight of the ultrasound wave. The transducer emits the ultrasound wave as a primary Lamb wave into the vessel wall so that a part of the primary Lamb wave leaks into the liquid. The ECDP changes the ultrasonic frequency of the transducer until the transducer receives a reflection of the emitted ultrasound wave in form of a reflection of the pressure wave, determine the corresponding time of flight, and determine the liquid level from the time of flight and from parameters of the ultrasound waves. 2. System according to claim 1 , wherein the transducer is arranged to receive only those reflections of the pressure wave that arrive at the same path along which the primary Lamb wave was emitted.3. System according to claim 1 , wherein the transducer is a piezo-electric transducer or an electromagnetic acoustic transducer.4. System according to claim 1 , wherein the transducer is placed at the outside of the vessel wall above a maximum filling level of the vessel.5. System according to claim 1 , wherein the transducer is arranged to receive a zero-order asymmetric mode of the primary Lamb wave.6. System according to claim 1 , wherein the transducer is arranged in such a way that the reception of signals reaching the transducer from the backside is blocked.7. System according to claim 1 , wherein the at least one electronic control and data processing unit is adapted to detect whether the reflection received by the transducer is indeed a reflection of the pressure wave by checking whether the determined liquid level is plausible claim 1 , in the sense that whether the liquid ...

SYSTEM AND METHOD FOR NON-INTRUSIVE AND CONTINUOUS LEVEL MEASUREMENT OF A LIQUID

A system and a method for non-intrusive and continuous level measurement of a liquid enclosed by a solid wall of a vessel. The system comprises an ultrasonic transmitter for generating an ultrasound wave and for emitting it into the vessel wall, an ultrasonic receiver for receiving the ultrasound wave, and an electronic control and data processing unit (ECDU) for controlling operation of the transmitter and of the receiver and for determining the liquid level. The transmitter is able to emit the ultrasound wave as a primary Lamb wave into the vessel wall so that a part of the primary Lamb wave leaks from the vessel wall into the liquid in form of a pressure wave. The ECDU is adapted to repeatedly determine the time of flight of the pressure wave, change the ultrasonic frequency of the transmitter until the determined time of flight reaches a minimum, and determine the liquid level. 1. System for non-intrusive and continuous level measurement of a liquid , where the liquid is enclosed by a solid wall of a vessel , the system comprisingan ultrasonic transmitter for generating an ultrasound wave and for emitting it into the vessel wall,an ultrasonic receiver for receiving the ultrasound wave through the vessel wall,at least one electronic control and data processing unit for controlling operation of the transmitter and of the receiver and for determining the liquid level from a time of flight of the ultrasound wave,whereinthe transmitter is a frequency-tunable transmitter which is placed at a first position at the outside of the vessel wall and below the level of the liquid surface in such a way that the transmitter is able to emit the ultrasound wave as a primary Lamb wave into the vessel wall so that a part of the primary Lamb wave leaks from the vessel wall into the liquid in form of a pressure wave in an inclined and upward direction towards the liquid surface,the receiver is placed at a second position at the outside of the vessel wall and below the level of the ...

Systems to Automate Adjustment of Water Volume Release To A Toilet Bowl To Correspond to Bowl Contents, Toilets Including the System and Related Methods

A method and system having a water-flush toilet having a toilet bowl that is in fluid communication with a water source and is mounted with a sensor. The sensor includes a transmitter to transmit an ultrasonic signal and a receiver to receive an ultrasonic signal. The sensor may measure a Time of Flight (ToF) of the signal to obtain a ToF measurement. A microcontroller is electrically connected to the sensor and may receive and process the ToF measurement using an algorithm to determine a bowl status. The toilet also includes at least one water valve that is disposed between the bowl and the water source, and that is electrically connected to the microcontroller for instructing the at least one water valve to move from a first position to a second position for a duration of time, wherein the duration of time corresponds to the bowl status.

ULTRASONIC DISTANCE MEASURING DEVICE

An ultrasonic distance measuring device retrieves an ultrasonic wave propagation speed from a correlation between an output of a medium sensor and a corresponding ultrasonic wave propagation speed. The ultrasonic distance measuring device sets a propagation path detection period for detecting a detection signal, which corresponds to the ultrasonic wave reflected by a liquid surface, based on a longest propagation path length and a shortest propagation path length between the liquid surface and the retrieved propagation speed of the ultrasonic wave. The ultrasonic distance measuring device calculates a distance of the propagation path based on a time difference between a detection timing of the detection signal and an output timing of the ultrasonic wave in a propagation path detection period, and the propagation speed of the ultrasonic wave. 1. An ultrasonic distance measuring device for measuring a distance of an ultrasonic wave propagation path to a liquid surface of a liquid stored in a tank , the ultrasonic distance measuring device comprising:an ultrasonic element for generating an ultrasonic wave and converting an input ultrasonic wave into an electric signal;a transmitter circuit for outputting a drive signal to the ultrasonic element for generation of the ultrasonic wave;a comparator circuit for outputting a detection signal when the electric signal of the ultrasonic element exceeds a threshold level;a medium sensor for detecting a physical quantity depending on a propagation speed of the ultrasonic wave propagating a medium of the propagation path; anda control circuit including a memory and an arithmetic operation circuit, wherein:the memory stores a correlation between the physical quantity and the propagation speed of the ultrasonic wave as well as a longest propagation path length and a shortest propagation path length of the propagation path; andthe arithmetic operation circuit is programmed to execute processing ofretrieving the propagation speed of ...

Ultrasonic distance measuring device

An ultrasonic element generates an ultrasonic wave and converts an input ultrasonic wave into an electric signal. A transmission circuit outputs a drive signal to the ultrasonic element. A comparator circuit outputs a first detection signal when the electric signal becomes larger than a threshold value and outputs a second detection signal when the electric signal becomes smaller than the threshold value. An arithmetic circuit computes a distance of a propagation path of the ultrasonic wave based on a time difference between an output timing, at which the ultrasonic element outputs of the ultrasonic wave, and a liquid level timing, at which the comparator circuit outputs the first detection signal, and based on a propagation speed of the ultrasonic wave. A storage unit stores a time difference between the first detection signal and the second detection signal. The transmission circuit increases the drive signal, as the time difference decreases.

ULTRASONIC DISTANCE MEASURING DEVICE

A first arithmetic circuit computes a propagation velocity of an ultrasonic wave based on a first time difference between an output timing, at which an ultrasonic element outputs an ultrasonic wave, and a reference timing, at which a comparator circuit outputs a detection signal on reflection off a distal end of a reference pipe, and a length of the reference pipe. A period circuit sets a propagation path detection period to detect a liquid level timing, at which the comparator circuit outputs the detection signal on reflection off the liquid level, based on a longest and shortest propagation path lengths and the propagation velocity. A second arithmetic circuit computes the length of the propagation path based on a second time difference, which is between the liquid level timing and the output timing during the propagation path detection period, and the propagation velocity. 1. An ultrasonic distance measuring device configured to measure a length of an ultrasonic wave propagation path between a liquid level of a detected fluid reserved in a tank and an ultrasonic element , the ultrasonic distance measuring device comprising:a transmission pipe including a reference pipe and a detection pipe, wherein the reference pipe has a predetermined length and extends in a horizontal direction orthogonal to a height direction along which the ultrasonic element and the liquid level are placed, wherein the detection pipe extends in the height direction toward the liquid level from a distal end of the reference pipe, such that a cavity of the reference pipe and a cavity of the detection pipe communicate with each other;the ultrasonic element configured to generate an ultrasonic wave in the cavity of the reference pipe toward the distal end of the reference pipe and to convert an input ultrasonic wave into an electric signal;a transmission circuit configured to output a drive signal that causes the ultrasonic element to generate an ultrasonic wave;a comparator circuit configured ...

System and method for acoustic container volume calibration

A system and method is disclosed for calibrating the volume of storage containers using ultrasonic inspection techniques. The exemplary ultrasonic calibration system comprises a plurality of acoustic devices controllably deployed in respective positions on the outside surface of the container. The acoustic devices include a transducer for sending acoustic signals across the internal volume of the container and sensors configured to detect the acoustic signals. The acoustic devices are in communication with a diagnostic computing device that controls the positioning and the operation of the acoustic devices and is further configured to determine the time time-of-flight of acoustic signals that travel between the various acoustic devices. Moreover, according to the specific arrangement of acoustic devices and the measured acoustic signal information, the control computer is configured to calculate the dimensions of the container and its internal volume.

METHOD AND APPARATUS FOR DETERMINING A FILL LEVEL OF A FLUID IN A TANK

A method and an apparatus for determining the fill level of a fluid () in a tank (), wherein a propagation time of an ultrasonic signal between an ultrasound element () and a reflection at the surface () of the fluid () is measured. A first, single reflection and a second, double reflection are evaluated, wherein the measurement of the reflections is carried out with a measurement setting with an excitation energy of the ultrasonic signal and a sensitivity. The sensitivity is indicated by a gain and a comparison value (). Via measurements with different measurement settings, a suspected first reflection and a suspected second reflection are located and a plausibility check is carried out of the propagation times of the first and second reflections with respect to each other. 12143213. A method for determining the fill level of a fluid () in a tank () , wherein a propagation time of an ultrasonic signal between an ultrasound element () and a reflection at the surface () of the fluid () is measured , wherein a first , single reflection and a second , double reflection are evaluated , wherein the measurement of the reflections is carried out with a measurement setting with an excitation energy of the ultrasonic signal and a sensitivity , the sensitivity being indicated by a gain and a comparison value () , wherein via measurements with different measurement settings a suspected first reflection and a suspected second reflection are found , and that a plausibility check is carried out of the propagation times of the first and second reflections relative to each other.2. The method according to claim 1 , wherein claim 1 , with successive measurements with a measurement setting changed from measurement to measurement claim 1 , a suspected first reflection is found and then with a measurement setting modified again claim 1 , a suspected second reflection is found claim 1 , and the plausibility check is then carried out of the propagation times of the first and second ...

PORTABLE SYSTEMS AND METHODS FOR ADJUSTING THE COMPOSITION OF A BEVERAGE

A beverage apparatus, the beverage apparatus being hand-holdable by a user of the beverage apparatus to be portable, can include a beverage chamber housing that includes a chamber for storing a consumable liquid. The beverage apparatus can include a dispensing assembly that includes a receptacle. The receptacle can retain a vessel. The vessel can include an electronic tag and can contain an additive. The dispensing assembly can be operatively controllable by a controller to output the additive from the vessel into the consumable liquid. The beverage apparatus can include one or more sensors, devices, or assemblies that can be used to detect a volume of liquid in the chamber or a liquid level in the chamber. The beverage apparatus can include an apparatus processing portion (ACP) and an apparatus database portion. The beverage apparatus of the disclosure can include various additional features. 136-. (canceled)37. A beverage apparatus , the beverage apparatus being hand-holdable by a user of the beverage apparatus so as to be portable , the beverage apparatus comprising:a beverage chamber housing that includes a chamber, and the chamber storing a consumable liquid in the chamber; 'the dispensing assembly operatively controllable to perform dispensing of the additive from the vessel into the consumable liquid in the beverage apparatus;', 'a dispensing assembly that includes a receptacle, and the receptacle retaining a vessel, and the vessel containing an additive,'}a first element that includes an accelerometer, the accelerometer outputting acceleration data regarding acceleration that the beverage apparatus experiences;an apparatus computer processor (ACP); inputting the acceleration data from the accelerometer;', 'determining volume data, regarding the consumable liquid, based on the acceleration data; and', 'performing processing based on the volume data., 'an apparatus database portion that includes instructions that are performed by the ACP in operation of the ...

Container fill level detection

Systems and methods for determining different fill levels of objects in the containers for disposable and consumable objects are disclosed. A sensor unit can detect presence of an object passing into a waste container and different levels of the objects in the waste container as the objects fill the waste container. When the waste container is full, a notification message may be generated to empty or replace the waste container. The sensor unit can also detect different levels of objects in a consumable container as the objects are removed from the consumable container. When the consumable container is empty, a notification message may be generated to refill or replace the consumable container. In embodiments of the invention, a notification message may also be generated for a predetermined level of objects in the container.

SENSING CHARACTERISTICS AND A TYPE OF FLUID USING A TEMPERATURE DEPENDENT RATE OF CHANGE OF A MEASUREMENT OF THE FLUID

A method of sensing a fluid. The method includes determining a slope based on a first measurement of a first ultrasonic pulse traveling through the fluid, a second measurement based on a second ultrasonic pulse traveling through the fluid, a first temperature of the fluid, and a second temperature of the fluid. The method further includes comparing the slope to a predetermined slope and the first measurement to a predetermined measurement. 1. A method of sensing a fluid , the method comprising:transmitting, via a transducer, a first ultrasonic pulse through a portion of the fluid toward a reflector;receiving, via the transducer, a first echo of the first ultrasonic pulse, wherein the first ultrasonic pulse is transmitted and the first echo is received within a first time period;determining a first measurement of the first ultrasonic pulse;determining, via a temperature sensor, a first temperature, the first temperature determined at the first time period;transmitting, via the transducer, a second ultrasonic pulse through the portion of the fluid toward the reflector;receiving, via the transducer, a second echo of the first ultrasonic pulse, wherein the second ultrasonic pulse is transmitted and the second echo is received within a second time period;determining a second measurement of the second ultrasonic pulse;determining, via the temperature sensor, a second temperature, the second temperature determined at the second time period;determining, via a controller, a slope based on the first measurement, the second measurement, the first temperature, and the second temperature; andcomparing, via the controller, at least one selected from the group consisting of the slope to a predetermined slope and the first measurement to a predetermined measurement.2. The method of claim 1 , wherein the first measurement is a first time-of-flight claim 1 , the second measurement is a second time-of-flight claim 1 , and the predetermined measurement is a predetermined time-of-flight ...

RESONANT ACOUSTIC STRUCTURE FOR MEASURING WELL OR BOREHOLE DEPTH

A method and apparatus to measure the fluid depth in a well or borehole is described. The approach reduces the effects of acoustic noise occurring near the top of the well or borehole that can interfere with the fluid depth measurement. A resonant acoustic structure between an acoustic transducer and the well or borehole provides efficient coupling of spectrally narrow acoustic signals into the well or borehole, as well as providing a bandpass acoustic filter on the returning signal, to improve the signal to noise ratio of the desired acoustic reflection. 1. An apparatus for measuring the distance to an acoustically reflective surface in a well or borehole , comprised of:a substantially airtight housing containing an acoustic transducer to generate an acoustic signal and an acoustic detector to measure acoustic signals;a pipe having a diameter substantially smaller than the diameter of said housing, and fastened over an aperture in said housing;where said pipe fastened to an access port of a well or borehole, where said well or borehole has a diameter substantially larger than said pipe;where said acoustic generator produces an acoustic signal with a substantial fraction of energy in a range of frequencies that coincide with at least one resonant frequency of said pipe.21. The apparatus in claim [] where the transducer is selected from the list including but not limited to: an electromagnetic speaker , a piezoelectric disc , an electrostatic speaker , and a compressed air solenoid.31. The apparatus in claim [] where the pipe has a circular cross-section with a diameter in the range of 1 cm to 30 cm.41. The apparatus in claim [] where the pipe is comprised of a material selected from the list including but not limited to steel , cast iron , polyvinyl chloride , copper , brass , nylon , and fluorinated polymer , polyethylene or stainless steel.51. The apparatus in claim [] where the acoustic detector is selected from the list including but not limited to a condenser ...

METHOD AND SYSTEM FOR DETERMINING A QUANTITY OF LIQUID IN A TANK

It is proposed a method for determining a quantity of a liquid in a tank, the tank comprising: a first ultrasound subsystem capable of measuring level of liquid present above a predetermined threshold level within the tank; and at least one second ultrasound subsystem, said second ultrasound subsystem being associated with a sensing area within the tank and being configured to measure a parameter characteristic of the liquid, said sensing area being located below the predetermined threshold level. The method comprises in the steps of: checking the validity of the measurement performed by said first ultrasound subsystem (S); when it is detected that the measurement of said first ultrasound system is not valid: (a) checking (S) the validity of the measurement performed by said second ultrasound subsystem; (b) determining (S S S) a quantity of liquid, which quantity being based on a result of the validity check at step (a). 1. A method for determining a quantity of a liquid in a tank , the tank comprising:a first ultrasound subsystem capable of measuring level of liquid present above a predetermined threshold level within the tank;at least one second ultrasound subsystem, said second ultrasound subsystem being associated with a sensing area within the tank and being configured to measure a parameter characteristic of the liquid, said sensing area being located below the predetermined threshold level,wherein the method comprises the following steps:checking the validity of the measurement performed by said first ultrasound subsystem; (a) checking the validity of the measurement performed by said second ultrasound subsystem;', '(b) determining a quantity of liquid, which quantity being based on a result of the validity check at step (a)., 'when it is detected that the measurement of said first ultrasound system is not valid2. The method according to claim 1 , said first and second ultrasound subsystems being configured to generate a sound wave and to detect an echo of ...

Paired ZF Sampling for Pulse Running Time Filling Level Sensor

A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values. 127-. (canceled)29. The method according to claim 28 , wherein the two digital sampling values within each pair are adjacent in time.30. The method according to claim 29 , wherein the time interval of the two digital sampling values is one quarter of an IF frequency period.31. The method according to claim 29 , wherein the time interval of the two digital sampling values is one eighth of an IF frequency period.32. The method according to claim 28 , wherein the digital sampling values are assigned alternately to one of two groups claim 28 , wherein each sampling pair comprises the first digital sampling value and the second digital sampling value claim 28 , wherein one of the two groups is defined by the respective first sampling value from each sampling pair and wherein the other one of the two groups is defined by the respective second sampling value from each sampling pair.33. The method according to claim 32 , wherein the characterizing value is calculated from respectively one value of each group.34. The method according to claim 32 , further comprising:before the calculating step, digital filtering each group.35. The method according to claim 32 , further comprising:before the calculating step, coherent system averaging each group.36. The method according to claim 34 , wherein digital band filtering of each group with a center frequency of about one quarter of the sampling frequency is performed.37. The method according to claim 32 , wherein the time intervals of the digital sampling values of each group correspond to the IF frequency period or a multiple thereof.38. ...

USING A PROVIDED INDICATION OF FILL LEVEL TO TRACK AMOUNT OF CONTENT IN A CONTAINER

An indication of a level of content within a container is received. A depth value associated with the indication of the level of content is identified. A content amount value corresponding to the depth value using a predetermined relationship between the depth value and the content amount value is retrieved. An indication associated with the content amount value is provided. 1. A method , comprising:receiving an indication of a level of content within a container;identifying a depth value associated with the indication of the level of content;retrieving a content amount value corresponding to the depth value using a predetermined relationship between the depth value and the content amount value; andproviding an indication associated with the content amount value.2. The method of claim 1 , wherein the container is a product container and the content amount value is used to track an inventory of the product.3. The method of claim 2 , further comprising receiving an indication of a number of full containers of the product in stock and tracking a total inventory of full and partially full containers of the product.4. The method of claim 3 , wherein at least a portion of the total inventory of the product is automatically tracked using an ultrasonic sensor device.5. The method of claim 1 , wherein the predetermined relationship is specified in a lookup table.6. The method of claim 1 , wherein the predetermined relationship is specified in a data structure that includes content amount value entries for a range of different depth values of the container.7. The method of claim 1 , wherein the indication of the level of content is associated with a location on a visual image representation of the container.8. The method of claim 1 , wherein the depth value is associated with a distance between a location of the level of content within the container and a reference location.9. The method of claim 1 , wherein identifying the depth value includes converting an image location- ...

Liquid level detector

A liquid level detector includes an ultrasonic sensor that emits an ultrasonic wave toward a liquid surface of liquid in a tank, a driving circuit unit that provides a driving signal to the ultrasonic sensor to emit the ultrasonic wave, a reception circuit unit that detects a reflected wave signal that corresponds to a reflected wave from a received signal received by the ultrasonic sensor, and an arithmetic control circuit unit that computes a level of the liquid surface with the reflected wave signal. The liquid level detector further includes an inclination detection unit that detects an inclination of the liquid surface relative to a virtual surface orthogonal to a direction of the ultrasonic wave and a driving condition computing circuit unit that instructs the driving circuit unit to increase a strength of the driving signal as the inclination of the liquid surface detected by the inclination detection unit increases.

LIQUID LEVEL DETECTOR

A liquid level detector includes an ultrasonic sensor that emits an ultrasonic wave toward a liquid surface of liquid in a tank, a driving circuit unit that provides a driving signal to the ultrasonic sensor to emit the ultrasonic wave, a reception circuit unit that detects a reflected wave signal that corresponds to a reflected wave from a received signal received by the ultrasonic sensor, and an arithmetic control circuit unit that computes a level of the liquid surface with the reflected wave signal. The liquid level detector further includes a temperature detection unit that detects a temperature of the liquid and a driving condition computing circuit unit that instructs the driving circuit unit to increase a strength of the driving signal as the temperature of the liquid that is detected by the temperature detection unit decreases. 1. A liquid level detector comprising:an ultrasonic sensor configured to emit an ultrasonic wave toward a liquid surface of liquid in a tank;a driving circuit unit configured to provide a driving signal to the ultrasonic sensor to emit the ultrasonic wave;a reception circuit unit configured to detect a reflected wave signal that corresponds to a reflected wave reflected by the liquid surface from a received signal that is received by the ultrasonic sensor;an arithmetic control circuit unit configured to compute a level of the liquid surface by using the reflected wave signal detected by the reception circuit unit;a temperature detection unit configured to detect a temperature of the liquid; anda driving condition computing circuit unit configured to instruct the driving circuit unit to increase a strength of the driving signal as the temperature of the liquid that is detected by the temperature detection unit decreases.2. A liquid level detector comprising:an ultrasonic sensor configured to emit an ultrasonic wave toward a liquid surface of liquid in a tank;a driving circuit unit configured to provide a driving signal to the ...

Through-wall tank ultrasonic transducer

Technology is described for tank coupled to an ultrasonic sensor subassembly where the combination of the tank and ultrasonic sensor subassembly for an ultrasonic sensor. In an embodiment, ultrasonic sensor subassembly is configured to form an ultrasonic sensor upon coupling to a tank having a tank wall. The ultrasonic sensor subassembly includes a sensor subassembly housing, a planar piezoelectric element located within the sensor subassembly housing, and a circuitry electrically connected to the planar piezoelectric element, where the planar piezoelectric element includes a surface coupled to the tank wall such that the tank wall forms a matching layer of an ultrasonic sensor, and the circuitry configured to produce a signal to drive the planar piezoelectric element to generate a sound wave, and receive an indication of a detected echo from the planar piezoelectric element. Various other methods and systems are also disclosed.

Method And Device For Monitoring The Tank Content Of A Storage Tank Of An Exhaust-Gas Treatment System

Various embodiments include a method for monitoring the tank content of a storage tank comprising: metering a fluid from the tank into the exhaust gas tract, wherein the fluid has a concentration with respect to a reducing agent; acquiring a current concentration value for the reducing agent; calculating a change in concentration of the reducing agent on the basis of the current concentration value in comparison with a stored concentration value; determining a current operating state of the vehicle to identify an operating state in which refueling cannot be carried out; and carrying out a plausibility check of the calculated change in concentration if the calculated change in concentration exceeds a predetermined threshold value and the operating state is identified. The plausibility check includes acquiring the current tank filling level of the fluid. 1. A method for monitoring the tank content of a storage tank of a system using selective catalytic reduction for exhaust gas after-treatment of an internal combustion engine of a vehicle , the method comprising:metering a fluid from the storage tank into the exhaust gas tract of the vehicle via a line and a metering device, wherein the fluid has a concentration with respect to a reducing agent;acquiring a current concentration value for the reducing agent;calculating a change in concentration of the reducing agent on the basis of the current concentration value in comparison with a stored concentration value;determining a current operating state of the vehicle to identify an operating state in which refueling cannot be carried out; andcarrying out a plausibility check of the calculated change in concentration if the calculated change in concentration exceeds a predetermined threshold value and the operating state is identified;wherein the plausibility check includes acquiring the current tank filling level of the fluid.2. The method as claimed in claim 1 , further comprisinginitializing the system with a last known ...

METHOD FOR FILL LEVEL MEASUREMENT USING THE TRAVEL TIME PRINCIPLE

A method for measuring a fill level of a fill substance in a container with a fill-level measuring device working according to the travel time principle. The fill-level measuring device in measurement operation sends transmission signals toward the fill substance in the container and, based on their signal fractions reflected back in the container, derives echo functions, which give the amplitudes of the signal fractions as a function of their travel time. With the assistance of a table, whose rows correspond to discrete fill levels and whose columns correspond to discrete travel times, and in which are stored as historical measurement points, in each case, in that row, whose row index corresponds to the associated fill level, information derived from echo functions derived in the past concerning travel times of echo function maxima attributed to reflections on reflectors located in the container, that also delivers reliable measurement results, when measuring conditions at the location of use of the fill-level measuring device can change, wherein the table is continuously updated based on current echo functions derived in ongoing measurement operation, wherein current measurement points derived from current echo functions are stored. 111-. (canceled)12. A method for measuring a fill level of a fill substance in a container with a fill-level measuring device working according to the travel time principle , comprising the steps of:the fill-level measuring device in measurement operation sends transmission signals toward the fill substance in the container and, based on their signal fractions reflected back in the container, derives echo functions, which give the amplitudes of the signal fractions as a function of their travel time, with the assistance of a table, wherein:the rows of the table correspond to discrete fill levels and the columns of the table correspond to discrete travel times;information is stored as historical measurement points, in each case, in that ...

SELF-CALIBRATING ULTRASONIC-BASED MONITORING SYSTEM

Systems, methods, and devices for determining distances inside a liquid filled container such as an oil tank. A combined ultrasonic signal receiver/transmitter with an attached reflector is immersed in the liquid. An ultrasonic signal is then transmitted from the receiver/transmitter and reflected ultrasonic signals are then received. One of the reflected signals is reflected off of the attached reflector and this reflected signal is then used to determine the signal's velocity and to thereby self-calibrate the system. Once the velocity in the liquid is known, the other reflected signals can then be used to determine the distance between the receiver/transmitter and at least one point of interest in the container. 1. A method for determining a distance from a signal receiver/transmitter to a point of interest in a container containing at least one type of liquid , the method comprising:a) performing a self-calibration step to determine a velocity of an ultrasonic signal in said at least one type of liquid, said self-calibration step being performed using a receiver/transmitter immersed in said at least one type of liquid;b) receiving reflected signals reflected from said point of interest, said reflected signals being received by said receiver/transmitter;c) analyzing said reflected signals to determine which relevant reflected signals are from said point of interest; andd) using said velocity determined in step a) and said relevant reflected signals to calculate said distance from said point of interest to said receiver/transmitter;wherein said receiver/transmitter is immersed in said at least one type of liquid.2. A method according to wherein said self-calibration step comprises:transmitting said ultrasonic signal into said liquid;receiving a calibration reflected signal, said calibration reflected signal being an ultrasonic signal reflected off of a reflected positioned at a predetermined distance from said receiver/transmitter;determining a time of travel for ...

Apparatus for sensing fuel level

Provided is an apparatus for sensing a fuel level, and more particularly, an apparatus for sensing a fuel level that is installed in a fuel tank of a vehicle to sense the fuel level. The apparatus for sensing a fuel level may improve reliability of the sensing of the level because a pipe is vertically installed in the fuel tank and an ultrasonic wave sensor is provided to a lower end of an interior of the pipe to measure the level of the fuel by an ultrasonic wave, and a filter is installed in a fuel inflow and outflow hole formed in the pipe and prevents an inflow of foreign materials into the pipe, thereby making it possible to more accurately sense the level of the fuel.

SENSING CHARACTERISTICS AND A TYPE OF FLUID USING A TEMPERATURE DEPENDENT RATE OF CHANGE OF A MEASUREMENT OF THE FLUID

A system for sensing characteristics of a fluid contained within a tank. The system including an ultrasonic sensor, a temperature sensor, and a controller. The ultrasonic sensor is configured to output a ultrasonic pulse into the fluid, receive an echo of the ultrasonic pulse, and output a signal based on the received echo. The temperature sensor is configured to sense a temperature of the fluid and output a temperature signal corresponding to the temperature of the fluid. The controller is configured to determine a time-of-flight based on the output of the ultrasonic pulse and the received echo of the ultrasonic pulse, receive the temperature signal, determine a characteristic of the fluid based on the time-of-flight and the temperature signal, compare the characteristic of the fluid to a baseline characteristic, and output a signal based on the comparison between the characteristic of the fluid and the baseline characteristic. 1. A system for sensing characteristics of a fluid contained within a tank , the system comprising: output a ultrasonic pulse into the fluid contained with the tank,', 'receive an echo of the ultrasonic pulse, and', 'output a signal based on the received echo;, 'an ultrasonic sensor configured to'}a temperature sensor configured to sense a temperature of the fluid contained within the tank and output a temperature signal corresponding to the temperature of the fluid contained within the tank; and determine a time-of-flight based on the output of the ultrasonic pulse and the received echo of the ultrasonic pulse,', 'receive the temperature signal,', 'determine a characteristic of the fluid contained within the tank based on the time-of-flight and the temperature signal,', 'compare the characteristic of the fluid to a baseline characteristic, and', 'output a signal based on the comparison between the characteristic of the fluid and the baseline characteristic., 'a controller configured to'}2. The system of claim 1 , wherein the baseline ...

SMARTPHONE-BASED VEHICLE CONTROL METHOD TO AVOID COLLISIONS

Vehicular control method to avoid collisions in which a smartphone is coupled to the vehicle while in a vehicular compartment. Data is generated from vehicle-resident sensors about operation of the vehicle and transferred from the vehicle to the smartphone while the smartphone is coupled to the vehicle. A communications network with another vehicle is established using the smartphone and the data transferred from the vehicle to the smartphone and data from sensors on the smartphone is transmitted via the smartphone and established communications network to other vehicle, the data including data about location and movement of the vehicle. Then, while the smartphone is coupled to the vehicle, a vehicular operational function is controlled based in part on data transmitted using the smartphone and established communications network to cause movement of the vehicle to change in order to avoid a collision with the other vehicle. 1. A method for vehicular control to avoid collisions , comprising:coupling a smartphone to the vehicle while the smartphone is in a compartment defined by the vehicle, the smartphone being usable for voice and data communications independent of the vehicle when outside of the compartment defined by the vehicle;causing data to be generated from one or more vehicle-resident sensors about operation of the vehicle while the smartphone is coupled to the vehicle;causing the data generated by the vehicle-resident sensors to be transferred from the vehicle to the smartphone while the smartphone is coupled to the vehicle;establishing a communications network with at least one other vehicle using the smartphone and transmitting via the smartphone and established communications network, the data transferred from the vehicle to the smartphone while the smartphone is coupled to the vehicle and data from at least one sensor on the smartphone, to the at least one other vehicle, the data including data about location and movement of the vehicle; andcontrolling, ...

DEVICE AND METHOD FOR MEASURING THE LEVEL OF LIQUID IN A CONTAINER

The invention relates to a filling level measuring device () for measuring the filling level in a container () through the wall () thereof by means of ultrasound, having an ultrasonic measuring head (), a controller (), and a fastening device () by means of which the filling level measuring device () can be fastened to the container () such that the ultrasonic measuring head () is pressed against the wall () of the container (). The invention further relates to a method of operating such a filling level measuring device (), wherein a sampling rate is used which is situation-dependent. The invention finally relates to an assembly made up of such a filling level measuring device and at least one spacer () which can be attached to the lower edge of a container () to be provided with the filling level measuring device (). 110291220241021292221610141292. A filling level measuring device () for measuring the filling level in a container () through the wall () thereof by means of ultrasound , comprising an ultrasonic measuring head () , a controller () , and a fastening device () by means of which the filling level measuring device () can be fastened to the container () such that the ultrasonic measuring head () is pressed against the wall () of the container () , an energy source () being integrated , a housing () being provided having the components of the filling level measuring device () integrated therein , and a coupling cushion () being provided which is arranged on that side of the ultrasonic measuring head () which faces the wall () of the container ().21024. The filling level measuring device () according to claim 1 , characterized in that the fastening device contains at least one magnet ().31024. The filling level measuring device () according to or claim 1 , characterized in that the fastening device () contains an adhesive.41024. The filling level measuring device () according to any of the preceding claims claim 1 , characterized in that the fastening device ...

SYSTEMS AND METHODS FOR FLUID LEVEL AND QUALITY MEASUREMENT FOR REDUCTANT STORAGE SYSTEMS

A reductant storage system for an internal combustion engine system includes a storage container having a bottom wall, a top wall opposite the bottom wall, an opening extending through the top wall, and a reservoir formed by a hollow interior of the storage container; a filter assembly; and a header assembly. The filter assembly extends through the opening and is configured to seal the opening and includes a filtering material. The header assembly extends through the opening and inside the filter assembly. The header assembly includes: (i) a first sensor configured to measure a quality of the reductant contained within the filter assembly and (ii) a second sensor configured to measure a level of the reductant contained within the filter assembly. 1. A reductant storage system for an internal combustion engine system , comprising:a storage container having a bottom wall, a top wall opposite the bottom wall, an opening extending through the top wall, and a reservoir formed by a hollow interior of the storage container;a filter assembly extending through the opening, wherein the filter assembly is configured to seal the opening and includes a filtering material; anda header assembly extending through the opening and inside the filter assembly, wherein the header assembly includes: (i) a first sensor configured to measure a quality of the reductant contained within the filter assembly and (ii) a second sensor configured to measure a level of the reductant contained within the filter assembly.2. The reductant storage system of claim 1 , wherein the first sensor is an ultrasonic sensor or an infrared sensor claim 1 , and wherein the second sensor is an ultrasonic sensor.3. The reductant storage system of claim 1 , wherein header assembly comprises a reflector positioned at a predetermined distance from the first sensor.4. The reductant storage system of claim 3 , wherein the first sensor comprises a transceiver configured to: (i) transmit a signal towards the reflector ...

SYSTEM FOR MEASURING A FILLING LEVEL

A system for measuring a filling level in a container for liquids that can be installed in a vehicle, which comprises a sound conductor, a vibration sensor for measuring a natural frequency of the sound conductor, a sound transmitter, in particular an ultrasound transmitter, for subjecting the sound conductor to sound, a sound receiver for receiving sound from the sound conductor, and an evaluation unit, which has a data connection to the sound transmitter and the sound receiver, wherein the evaluation unit is configured to determine a distance between the sound transmitter and a boundary surface of the liquid, and to evaluate the distance with regard to a filling level of the container, and to evaluate the natural frequency of the sound conductor with regard to a density of the liquid. 1. A system for measuring a fillinging level in a container for liquids that is to be installed in a vehicle , comprising a sound conductor , a vibration sensor for measuring a natural frequency of the sound conductor , a sound transmitter , comprising an ultrasound transmitter for subjecting the sound conductor to sound , a sound receiver for receiving sound from the sound conductor , and an evaluation unit , which has a data connection to the sound transmitter , the vibration sensor , and the sound receiver , wherein the evaluation unit is configured to determine a distance between the sound transmitter and a boundary surface of the liquid , and to evaluate the distance with regard to a filling level of the container , and to evaluate the natural frequency of the sound conductor with respect to a density of the liquid.2. The system for measuring a filling level according to claim 1 , wherein the evaluation unit is configured to detect a runtime between when the sound conductor is subjected to the sound claim 1 , and the reception of the sound from the sound conductor claim 1 , and to evaluate the runtime with respect to the filling level of the container.3. The system for measuring ...

EXTERNAL SOLIDS LEVEL DETECTION FOR A COLLECTION VESSEL

A mixed fluid collection apparatus includes a collection vessel configured to contain a fluid comprising a first component and a second component. The collection vessel includes an outer shell within which the fluid is contained. An emitter is coupled to an outside of the outer shell at a first position, and is configured to emit an acoustic signal into the outer shell. A receiver is coupled to the outside of the outer shell at a second position, with the receiver being configured to detect the acoustic signal emitted by the emitter. A controller is coupled to the emitter and the receiver. The controller is configured to determine a time between when the acoustic signal is emitted and when the acoustic signal is detected, and the controller is configured to determine a level of the second component in the collection vessel based on the time. 1. A mixed fluid collection apparatus , comprising:a collection vessel configured to contain a fluid comprising a first component and a second component, wherein the collection vessel includes an outer shell within which the fluid is contained;an emitter coupled to an outside of the outer shell at a first position, wherein the emitter is configured to emit an acoustic signal into the outer shell;a receiver coupled to the outside of the outer shell at a second position, the second position being offset from the first position, the receiver being configured to detect the acoustic signal emitted by the emitter; anda controller coupled to the emitter and the receiver, wherein the controller is configured to determine a time between when the acoustic signal is emitted and when the acoustic signal is detected, and wherein the controller is configured to determine a level of the second component in the collection vessel based on the time.2. The apparatus of claim 1 , wherein the outer shell comprises a circumferential sidewall claim 1 , the emitter and the receiver being coupled to the sidewall claim 1 , and wherein the first position ...

System and method for measuring the filling level of a fluid container by means of acoustic waves

Disclosed is a system for measuring the filling level of a container, by means of acoustic waves, the system comprising at least three transducers configured to be positioned at different vertical heights on the outer face of the cylindrical portion of the casing, each transducer being configured to emit, upon receiving a first electric signal, an incident acoustic wave at the outer face of a wall of the casing, and to emit a second electric signal upon receiving a reflected acoustic wave generated by the reflection of the incident acoustic wave on the inner face of the wall, and at least one calculation unit configured to determine, based on the electric signals and physical properties of the monophase fluids, the presence of the first monophase fluid at each vertical height of the transducers.

CHEMICAL LIQUID TANK

A chemical liquid tank has a container to store chemical liquid, a sensor to measure a height of a liquid surface by irradiating the chemical liquid stored in the container with an ultrasonic wave and measuring time until a reflected wave reflected from the liquid surface of the chemical liquid is received, and a gas jetting port to spray a gas toward a part of the liquid surface comprising an irradiation position of the ultrasonic wave in the container. 1. A chemical liquid tank , comprising:a container to store chemical liquid;a sensor to measure a height of a liquid surface based on a time after irradiating the chemical liquid stored in the container with an ultrasonic wave and before sensing a reflected wave reflected from the liquid surface of the chemical liquid; anda gas jetting port to jet a gas toward a part of the liquid surface comprising an irradiation position of the ultrasonic wave in the container.2. The chemical liquid tank according to claim 1 , whereinthe sensor measures the height of the liquid surface when a bubbles are removed from the liquid surface by jetting the gas to the part of the liquid surface.3. The chemical liquid tank according to claim further comprising:a guide member provided inside an outer wall surface of the container and to guide the bubbles generated in the container.4. The chemical liquid tank according to claim 1 , whereinthe outer wall surface of the container is a cylindrical shape,the guide member comprises a cylindrical inner wall surface disposed inside and at an interval from the outer wall surface, andthe inner wall surface comprises a notch having a predetermined width and extending from the upper end portion to the lower end portion of the inner wall surface.5. The chemical liquid tank according to claim 4 , whereinthe gas jetting port jets the gas in a manner that bubbles located in the part of the container move toward the notch.6. The chemical liquid tank according to claim 5 , whereinthe guide member guides the ...

SOLID CONTENTS VERIFICATION SYSTEMS AND METHODS

Solid contents verification systems and methods are provided. The system includes a contents sensor unit, a container-carrying unit and a control unit. The contents sensor unit has at least one contents sensor configured to send and receive sonic pulses to determine a state of contents in a container. The contents sensor unit is configured to send a signal communicating a state of the contents in a container. The container-carrying unit is configured to hold a container in substantial alignment with the contents sensors to expose the contents to the sonic pulses. The control unit is operatively connected to the contents sensor unit. The control unit is configured to receive the signal communicating the state of the contents and to compare the state of the contents with a desired state of the contents. 1. A system comprising: send and receive sonic pulses or electro-magnetic signals to determine a state of contents in a container, and', 'send a signal representing the state of the contents in the container, the contents being a plurality of solids that form an irregular top surface in the container; and, 'at least one contents sensor configured to receive the signal representing the state of the contents,', 'compare the state of the contents with an expected state of the contents,', 'record a verification of the container in response to the state of the contents being consistent with the expected state of the contents, and', 'flag the container in response to the state of the contents being not consistent with the expected state of the contents., 'a verification processor configured to2. The system of claim 1 , further comprising a conveyor configured to:move the container to be close to or away from the at least one contents sensor for sending or receiving the sonic pulses or electro-magnetic signals; orstop the movement of the container at a verification point.3. The system of claim 1 , wherein the at least one contents sensor includes a sound pulse device ...

System and method for monitoring and reporting liquid nitrogen container level

Exemplary embodiments disclosed herein are directed to systems and methods by which the level of liquid nitrogen in one or more liquid nitrogen storage containers can be monitored and leaks may be detected and reported.

Remote Level Sensor for a Liquid Tank

A remote level sensor for a liquid tank. The remote level sensor for a liquid tank comprises a housing having a wireless transmitter, a sensor and a power source. The housing is configured to be mounted within the interior of a tank. The sensor detects the level of contents within the tank and transmits the level information via wireless signal to a receiving unit. The receiving unit comprises a display and is configured to present the level to a user. An auditory alarm can be configured to sound if the level of the tank falls below a predetermined threshold. Further, some embodiments of the receiving unit e configured to display additional information, such as local gas merchants and the current price of oil.

Apparatus And Method For Determining A Level Of A Fluid Surface In A Fluid Container

The present disclosure relates to fluid level sensors in general and an apparatus and a corresponding method for determining a level of a fluid surface in a fluid container. In some embodiments, the apparatus may include a first sound transducer, a second sound transducer, a reference element, a first deflection element, and a control unit. The reference element may be disposed at a predetermined distance from the second sound transducer and arranged in a fluid space of the fluid container. The first deflection element may be arranged in the fluid space to deflect the second sound signals by a first predetermined angle toward the fluid surface. The control unit may establish a speed of sound within a fluid in the fluid space based at least in part on the second sound signals and establish the level of the fluid surface over a base portion of the fluid container based at least in part on the first sound signals, the second sound signals, and the speed of sound within the fluid. 1. An apparatus for determining a level of a fluid surface in a fluid container , the apparatus comprising:a first sound transducer for transmitting and receiving first sound signals toward the fluid surface; anda second sound transducer for transmitting and receiving second sound signals;a reference element disposed at a predetermined distance from the second sound transducer and arranged in a fluid space of the fluid container;a first deflection element arranged in the fluid space to deflect the second sound signals by a first predetermined angle toward the fluid surface, anda control unit configured to establish a speed of sound within a fluid in the fluid space based at least in part on the second sound signals and to establish the level of the fluid surface over a base portion of the fluid container based at least in part on the first sound signals, the second sound signals, and the speed of sound within the fluid.2. The apparatus as claimed in claim 1 , further comprising a second ...

DEVICE FOR DETERMINING A FILLING LEVEL

A device for determining a filling level of a container is provided, having a damping cup, a measuring section extending vertically inside the damping cup, and having an ultrasound converter arranged at its lower end region, and at least one antechamber. A calming structure is arranged in at least a part of at least one antechamber, to achieve as much degassing of the liquid as possible. The part of the antechamber having the calming structure is designed to be open towards the top over a large area and is connected, via a venting channel, with a vent in the upper region of the device. 1. A device for determining a filling level in a container , comprising a damping cup , a measuring section extending vertically inside the damping cup , and having an ultrasound converter arranged at its lower end region , and at least one antechamber , wherein a calming structure is arranged in at least a part of at least one antechamber , and wherein the part of the antechamber comprising the calming structure is open towards the top over a large area and is connected , via a venting channel , with a vent in the upper region of the device.2. The device according to claim 1 , whereinthe part of the antechamber comprising the calming structure is completely open towards the top.3. The device according to one of claims 1 , wherein the antechamber comprises a first antechamber and an inlet opening claims 1 , and comprises a second antechamber which is connected with the first antechamber and the measuring section.4. The device according to claim 3 , wherein the first antechamber surrounds the measuring section like a ring claim 3 , wherein an inlet opening is present on one side claim 3 , and an outlet opening is present on the opposite side.5. The device according to claim 1 , wherein the calming structure comprises a star-shaped inner region and projections reaching from the outside into the free regions of the star-shaped inner region.6. The device according to claim 3 , wherein the ...

Level Sensor with Parabolic Reflector

A level sensor and housing therefor, the level sensor provides a measurement of the depth in a sewer manhole or chamber. The level sensor includes an ultrasonic transducer that emits a signal to measure the liquid below and may use an additional transducer or it is used by itself to detect the signal reflected from the surface. A parabolic reflector is designed and arranged to direct the emitted ultrasonic signal from the transducer to the surface with a linear beam while minimizing the beam spread. The return echo may either be measured directly or with the same transducer that was used to transmit the ultrasonic signal. The narrow ultrasonic beam with limited spread will allow measuring level in a sewer manhole or confined chamber or any sewer where the level is measured close to a vertical wall. 1. A liquid level sensor system for operation in vertically confined spaces , comprising:an ultrasonic transmitter and a first ultrasonic transducer coupled to said ultrasonic transmitter for receiving ultrasonic signals from said ultrasonic transmitter and transmitting said ultrasonic signals acoustically through an air medium;an ultrasonic receiver configured for receiving reflected ultrasonic signals resulting from said transmitted ultrasonic signals;a unitary system housing forming a circuit compartment and an off axis parabolic acoustic reflector;said ultrasonic transmitter and said ultrasonic receiver housed in said circuit compartment in said unitary system housing;said ultrasonic transducer disposed on a lateral side of said circuit compartment and directed to said off axis parabolic acoustic reflector at a focus producing a downward directed beam from said off axis parabolic reflector.2. The liquid level sensor system as recited in claim 1 , wherein said ultrasonic receiver is configured to receive said reflected ultrasonic signals through said first ultrasonic transducer.3. The liquid level sensor system as recited in claim 1 , wherein said ultrasonic receiver ...

DEVICE FOR MEASURING A FILL LEVEL OF A LIQUID IN A CONTAINER WITH AN ULTRASONIC SENSOR

In a device for measuring a fill level of a liquid in a container with an ultrasonic sensor which is arranged on a floor element, wherein a damping cup with a measuring tube is assigned to the ultrasonic sensor, the damping cup has an external housing and an internal housing. The internal housing contains the measuring tube, and either the internal housing has outwardly protruding contact elements that lie against the inside of the external housing or the external housing has outwardly protruding contact elements that lie against the outside of the internal housing. The external housing is also provided and designed for pluggable mounting of of the internal housing, and a channel is formed between the internal housing and the external housing. 1. A device for measuring a fill level of a liquid in a container with an ultrasonic sensor which is arranged on a floor element , wherein a damping cup with a measuring tube is assigned to the ultrasonic sensor ,whereinthe damping cup has an external housing and an internal housing,the internal housing includes the measuring tube,either the internal housing has outwardly protruding contact elements that lie against the inside of the external housing, or the external housing has inwardly protruding contact elements that lie against the outside of the internal housing, andthe external housing is provided and designed for the pluggable mounting of the internal housing,a channel is formed between the internal housing and the external housing, andthe lower end regions of the internal housing and the external housing are connected to the floor element.2. The device according to claim 1 , wherein the lower region of the internal housing has an antechamber.3. The device according to claim 2 , wherein the internal housing has a protruding edge on the top edge of the antechamber claim 2 , which protruding edge closes off the antechamber at the top and is provided and designed to bear on the inside of the external housing.4. The device ...

DEVICE FOR MEASURING A FILL LEVEL OF A LIQUID IN A CONTAINER

In a device for measuring a fill level of a liquid in a container with an ultrasonic sensor, wherein the ultrasonic sensor is arranged at the bottom end of a damping cup with a measuring tube, wherein the top area of the measuring tube has at least one inner ventilation hole and a cover assigned to the inner ventilation hole, which cover surrounds at least the upper end area of the measuring tube and itself has at least one outer ventilation hole, wherein at least one screen is present in the cover and is in contact with the cover at the top, it is provided that the screen which is in contact with the cover at the top extends horizontally from the measuring tube as far as a side wall of the cover. In addition at least four screens are provided between the one or more inner ventilation holes and the one or more outer ventilation holes, so that at least two air bubbles are trapped in the region of the screen when the device is in operation. 18. A Device for measuring a fill level of a liquid in a container having an ultrasonic sensor , wherein the ultrasonic sensor is arranged at the bottom end of a damping cup with a measuring tube , wherein the measuring tube has at least one inner ventilation hole in the upper region thereof and one cover assigned to the inner ventilation hole , which cover surrounds at least the upper end region of the measuring tube and itself has at least one outer ventilation hole , wherein at least one screen is present in the cover and which is upwardly in contact with the cover () , whereinthe screen which is upwardly adjacent to the cover extends horizontally from the measuring tube as far as a side wall of the cover, andat least four screens are provided between the one or more inner ventilation hole(s) and the one or more outer ventilation holes, so that when the device is operating at least two air bubbles are trapped in the area of the screens.2. The Device according to claim 1 , wherein two functional ventilation paths with at least ...

Device For Determining A Level Of The Surface Of A Fluid In A Fluid Container

The present disclosure relates to a device for determining a height of a fluid surface in a fluid container. In some embodiments, the device comprises: a first sound transducer and a second sound transducer for transmitting and receiving sound signals; a reference element disposed at a predetermined distance from the second sound transducer in a fluid space of the fluid container; a deflection element in the fluid space to deflect sound signals by a predetermined angle in the direction of the reference element; and a control unit. The two sound transducers are adjacent a base portion of the fluid container and aligned similarly. The control unit is configured to establish a speed of sound within a fluid in the fluid space based at least in part on travel of the second sound signals and thereby to establish the height of the fluid surface over the base portion of the fluid container dependent on the first sound signals and the speed of sound within the fluid. 1. A device for determining a height of a fluid surface in a fluid container , the device comprising:a first sound transducer for transmitting and receiving first sound signals;a second sound transducer for transmitting and receiving second sound signals;the two sound transducers arranged adjacent a base portion of the fluid container aligned similarly,a reference element disposed at a predetermined distance from the second sound transducer and arranged in a fluid space of the fluid container;a deflection element arranged in the fluid space to deflect the second sound signals by a predetermined angle in the direction of the reference element; anda control unit configured to establish a speed of sound within a fluid in the fluid space based at least in part on travel of the second sound signals and thereby to establish the height of the fluid surface over the base portion of the fluid container dependent on the first sound signals and the speed of sound within the fluid.2. The device as claimed in claim 1 , ...

PRODUCT RESERVOIR INCLUDING INTELLIGENT LEVEL SENSOR

Systems, methods, and computer program products for monitoring a level of product () in a reservoir () of a chemical dispensing system. A lid () configured to engage an opening () of a container () includes a level sensor () having a transceiver () that transmits an output signal () and receives a portion of the output signal () reflected back () to the transceiver (). The level sensor () determines an amount of the product () in the container () by comparing a characteristic of the reflected signal (), such as time the reflected signal () was received, to the characteristic of the output signal (), such as the time the output signal () was transmitted. The level sensor () may also determine the size of the container () based on the reflected signal (), and take this size into account when determining the amount of product () in the container (). The level sensor () transmits product level data to a mobile device () in response to receiving an interrogation signal () therefrom.

Automatic Analyzer

Provided is an automatic analyzer provided with a liquid level sensing function in which liquid levels in sample containers having various heights can be precisely detected using ultrasonic waves. This device is provided with: a conveyance rack for conveying a sample container which contains a sample and is loaded thereon; a fixed ultrasonic distance sensor for measuring the liquid level position in the sample container loaded on the conveyance rack; sound wave guides for suppressing diffusion of sound waves transmitted from the ultrasonic distance sensor, the sound wave guides being disposed between the sample container and the ultrasonic distance sensor; and a sound wave guide control unit for adjusting the length or switching the length of the sound wave guides in accordance with the distance between the ultrasonic distance sensor and the sample container. 1. An automatic analyzer , comprising:a conveyance rack for conveying a sample container which contains a sample and is loaded thereon;a fixed ultrasonic distance sensor for measuring a liquid level position in the sample container loaded on the conveyance rack;sound wave guides for suppressing diffusion of sound waves transmitted from the ultrasonic distance sensor, the sound wave guides being disposed between the sample container and the ultrasonic distance sensor; anda sound wave guide control unit for adjusting a length or switching a length of the sound wave guides in accordance with a distance between the ultrasonic distance sensor and the sample container.2. The automatic analyzer according to claim 1 , wherein the sound wave guide is multistage and extendable.3. The automatic analyzer according to claim 1 , comprising:a plurality of sound wave guides each having a different length as the sound wave guide, whereinthe sound wave guide control unit disposes one sound wave guide selected from the plurality of sound wave guides having different lengths between the sample container and the ultrasonic distance ...

Movable system for measuring a content of a bin

A method and a system for evaluating a content of a bin, the method may include (a) transmit multiple acoustic pulses by multiple acoustic transceiver arrays towards different areas of an upper surface of the content when the acoustic transceivers are positioned at different locations; wherein the multiple acoustic transceiver arrays are connected to a device that is moved according to a movement pattern between the different locations; receive by the multiple acoustic transceiver arrays multiple echoes of the multiple acoustic pulses; process by the multiple acoustic transceiver arrays the multiple echoes to provide multiple estimates of the different areas; associate with the multiple estimates of the different areas timing information indicative of a timing of the receiving of the multiple echoes to a computer; and obtain by an acoustic based location device, location information readings related to locations of the device at multiple points of time

METHOD FOR MEASURING THE FILL LEVEL OF A FLUID

In a method for measuring the fill level of a fluid in a housing using an ultrasound sensor, detected multiple echoes in relation to a signal are reflected from a reference point and level echoes in relation to the signal reflected from the fluid level are evaluated in relation to their fluctuation width. The level echoes can be identified in this manner and the fill level determined from the transit times of the signals to the reference point and to the fluid level. 15-. (canceled)6. A method for measuring the fill level of a fluid in a housing using an ultrasound sensor , the measurement being carried out along a measurement path on which there is a reference point and in which signal echoes , including multiple reference echoes , in relation to signals reflected from the reference point , and level echoes , in relation to signals reflected from the fluid level , are generated as a result of multiple time domain measurements , the method comprising:determining amplitudes of the respective signal echoes and storing the amplitudes;determining whether the stored amplitudes of the signal echoes lie in a fixed fluctuation range for the multiple reference echoes from the reference point or in a fixed fluctuation range for the level echoes; andregistering the signal echoes lying in the fluctuation range for the level echoes as level signals, and determining the fill level of the fluid based on an associated echo propagation time based on the speed of sound determined from the propagation time associated with a reference echo as far as the reference point.7. The method as claimed in claim 6 , wherein the fill level measurement is carried out on a fluid housing located in a vehicle.8. The method as claimed in claim 6 , wherein the method is carried out with a fixed fluctuation range for the multiple reference echoes from the reference point of +/−20 mV.9. The method as claimed in claim 6 , wherein the method is carried out with a fixed fluctuation range for the level ...

MEASUREMENT SYSTEM FOR DETERMINING LIQUID PROPERTIES IN A VESSEL

A measurement system for determining a density ρ or a compressibility κ of a liquid medium in a vessel includes: at least one pressure sensor for measuring a hydrostatic pressure Δp of the liquid medium as a measured hydrostatic pressure Δp; at least one ultrasound sensor for measuring a first time of flight talong a first propagation path comprising a point at a level surface of the liquid medium, and for measuring a second time of flight talong a second propagation path, which is different from the first propagation path; and a control unit for determining the density ρ or the compressibility κ of the liquid medium based on the measured hydrostatic pressure Δp, the first time of flight t, and the second time of flight t. 1. A measurement system for determining a density ρ or a compressibility κ of a liquid medium in a vessel , comprising:at least one pressure sensor configured to measure a hydrostatic pressure Δp of the liquid medium as a measured hydrostatic pressure Δp;{'sub': 1', '2, 'at least one ultrasound sensor configured to measure a first time of flight talong a first propagation path comprising a point at a level surface of the liquid medium, and to measure a second time of flight talong a second propagation path, which is different from the first propagation path; and'}{'sub': 1', '2, 'a control unit configured to determine the density ρ or the compressibility κ of the liquid medium based on the measured hydrostatic pressure Δp, the first time of flight t, and the second time of flight t.'}2. The measurement system according to claim 1 , wherein the at least one pressure sensor comprises a differential sensor arrangement configured to measure a difference between a pressure at a bottom of the vessel and above the level surface.4. The measurement system according to claim 1 , wherein the at least one ultrasound sensor comprises a first ultrasound sensor and a second ultrasound sensor claim 1 ,{'sub': '1', 'wherein the first ultrasound sensor is ...

Sensor Management And Record Tracking System

The present invention is an early infection detection system comprising: a housing having a sensor system section and tray section; an inflow port in fluid communications with a catheter to allow bodily fluid to flow from a patient into the tray section; a color sensor included in the sensor section and in electrical communications with a control module configured to sense the color of a reagent and convert the color to a numeric value representing the amount of a compound, such as bacteria, present in the bodily fluid; a tray carrying a reagent that darkens relative to the amount of the compound present in a bodily fluid that contacts the strip; and, computer readable instructions included in the control module for receiving the numeric value and transmitting the numeric value to a local server. 1. An early infection detection system comprising:a housing having a sensor system section, tray section, and volume section;an inflow port in fluid communications with a catheter to allow bodily fluid to flow from a patient into the tray section;an inflow one way valve configured to prevent bodily fluid from flowing from the tray section toward the catheter once the fluid is present in the tray section;a color sensor included in the sensor section and in electrical communications with a control module configured to sense the color of a reagent and convert the color to a numeric value representing the amount of a compound present in the bodily fluid;a chamber extended into the tray section and receiving the sensor for blocking ambient light;a tray carrying a reagent that darkens relative to the number of bacteria present in a bodily fluid that contacts the strip;a urine meter opening in fluid communications with the tray section and the urine meter allowing bodily fluid to flow from the tray section into the urine meter;a urine meter one way valve configured to prevent bodily fluid from flowing from the urine meter into the tray assembly;a first section and a second section ...

FLUID LEVEL SENSING

Systems, techniques, and apparatus are provided for fluid level sensing. An instruction to open may be transmitted to a smart valve that may be between an annulus of a well and a head unit. An instruction to discharge gas into the annulus of the well may be transmitted to a head unit. Sound wave data generated by a microphone of the head based on a sound wave propagated through gas in the annulus of the well may be received. A level of fluid over a pump in the well may be determined based on the sound wave data. 1. A method comprising:transmitting to a smart valve disposed between an annulus of a well and a head unit an instruction to open;transmitting to the head unit an instruction to discharge gas into the annulus of the well to generate a sound wave;receiving, from the head unit, sound wave data generated by a microphone of the head unit based on the sound wave propagated through gas in the annulus of the well;determining, based on the sound wave data, a level of fluid over a pump in the well.2. The method of claim 1 , further comprising filtering the sound wave data before determining the level of fluid over the pump in the well.3. The method of claim 1 , wherein determining the level of fluid over the pump in the well based on the sound wave data further comprises:determining a speed of propagation of the sound wave within the well based on the sound wave data;determining a travel time of the sound wave from the top of the well to a surface of the fluid within the well back to the top of the well based on the speed of propagation of the sound wave; anddetermining the level of fluid over the pump in the well based on the travel time and specific gravity of the gas discharged into the annulus of the well.4. The method of claim 1 , further comprising:receiving pressure and temperature data from a pressure control system; anddetermining at least one value for at least one aspect of the well based on the sound wave data and pressure and temperature data.5. The ...

METHOD FOR DETERMINING THE FILL STATE IN A TANK

The disclosure relates to a method for determining a level of a liquid in a tank with an ultrasonic fill state sensor and at least two reference surfaces for reflecting an ultrasonic wave transmitted by the ultrasonic fill state sensor. A first reference surface is arranged below a second reference surface. The method includes determining a first propagation speed of an ultrasonic wave to the first reference surface on a first measurement path and a second propagation speed from the first reference surface to the second reference surface on a second measurement path. The method also includes measuring a propagation time of an ultrasonic wave from the ultrasonic fill state sensor to a liquid level of the liquid in the tank, selecting the first propagation speed or the second propagation speed based on at least one selection criterion, and calculating a fill state using the propagation time measured. 1. A method for determining a level of a liquid in a tank with an ultrasonic level sensor and at least two reference surfaces for reflection of an ultrasonic wave that is emitted from the ultrasonic level sensor , wherein a first reference surface is disposed below a second reference surface , the method comprising the following steps:a) determining a first propagation speed of an ultrasonic wave in the liquid over a first measuring distance from the ultrasonic level sensor to the first reference surface;b) determining a second propagation speed of an ultrasonic wave in the liquid over a second measuring distance from the first reference surface to the second reference surface;c) measuring a propagation time of an ultrasonic wave from the ultrasonic level sensor to a liquid level of the liquid in the tank;d) selecting the first propagation speed or the second propagation speed depending on at least one selection criterion; ande) computing a level with the propagation time measured in step c) and the propagation speed selected in step d).2. The method of claim 1 , wherein ...

CLIMATE CONTROL DEVICE

Climate control devices and methods are disclosed. One climate control device includes a housing, an evaporative medium port, a liquid level sensor, and a controller. The controller is configured to determine a change in the level of liquid in the housing, calculate an efficiency of an evaporative medium received by the evaporative medium port based on the change in the level of liquid, and provide an evaporative medium efficiency indication when the efficiency of the evaporative medium falls below a predetermined value. Another climate control device includes a housing, an evaporative medium port, a pump, a first conduit, and a controller. The controller configured to determine an evaporation rate of an evaporative medium received by the evaporative medium port, and operate the pump to pump liquid through the first conduit to the evaporative medium port at varying liquid flow rates dependent on the evaporation rate of the evaporative medium. 1. A climate control device comprising:a housing defining a receptacle for receiving liquid;an evaporative medium port sized to receive an evaporative medium;a pump positioned at least partially within the receptacle;a first conduit connected between an outlet of the pump and the evaporative medium port; and determine an evaporation rate of the evaporative medium received by the evaporative medium port; and', 'operate the pump to pump the liquid in the receptacle through the first conduit to the evaporative medium port at varying liquid flow rates dependent on the evaporation rate of the evaporative medium., 'a controller electrically coupled with the pump, the controller configured to2. The climate control device of claim 1 , further comprising a temperature sensor configured to sense a temperature in an environment surrounding the climate control device claim 1 ,wherein the controller varies the liquid flow rate based on the sensed temperature.3. The climate control device of claim 1 , further comprising a humidity sensor ...

Mobile Asset Data Recorder and Transmitter

An acceleration-based mobile asset data recorder and transmitter equipped with a wireless processing unit, an event recorder, a digital video recorder, a fuel level sensor, and an inertial navigation sensor board. The inertial navigation sensor board includes a 3-axis gyroscope, a 3-axis accelerometer, a 3-axis magnetometer, and a microcontroller. The data recorder and transmitter allows for automatic orientation, automatic compass calibration, fuel compensation with pitch and roll, emergency brake application with impact detection, rough operating condition detection, engine running detection, and inertial navigation of a mobile asset. Users can use the normal operation of their mobile assets to locate and alert, in real-time, areas where their assets are encountering rough operating environments, to provide for quicker emergency response, and to validate the effectiveness of repairs and rerouting.

HIGH TEMPERATURE ULTRASONIC PROBE AND PULSE-ECHO PROBE MOUNTING FIXTURE FOR TESTING AND BLIND ALIGNMENT ON STEAM PIPES

A high temperature ultrasonic probe and a mounting fixture for attaching and aligning the probe to a steam pipe using blind alignment. The high temperature ultrasonic probe includes a piezoelectric transducer having a high temperature. The probe provides both transmitting and receiving functionality. The mounting fixture allows the high temperature ultrasonic probe to be accurately aligned to the bottom external surface of the steam pipe so that the presence of liquid water in the steam pipe can be monitored. The mounting fixture with a mounted high temperature ultrasonic probe are used to conduct health monitoring of steam pipes and to track the height of condensed water through the wall in real-time. 119.-. (canceled)20. A monitoring system for determining the height of fluid in a pipe , comprising: a piezoelectric transducer element configured to receive and transmit ultrasonic waves,', 'electrical input terminals configured to receive a driving signal to said piezoelectric transducer element,', 'electrical output terminals configured to provide a response signal from said piezoelectric transducer element; and, 'an ultrasonic probe, wherein the ultrasonic probe includes'}a probe alignment system, configured to align the ultrasonic probe to an exterior wall of the pipe.21. The monitoring system of claim 20 , wherein the piezoelectric transducer element has a Curie temperature of at least 350° C.22. The monitoring system of claim 20 , wherein the piezoelectric transducer element has a dielectric loss tangent (tan δ) of 0.02 or less.23. The monitoring system of claim 20 , wherein the piezoelectric transducer element has an electromechanical coupling factor in thickness dimension (Kt) of at least 0.45.24. The monitoring system of claim 20 , wherein the ultrasonic probe further comprises a backing.25. The monitoring system of claim 24 , wherein the backing is a selected one of air claim 24 , a high impedance polymer or a low impedance polymer.26. The monitoring system ...

NON-CONTACT SENSOR FOR DETERMINING A F.O.G. LEVEL IN A SEPARATOR, INCLUDING ULTRASONICS

An apparatus having a layer of fats, oils and grease (F.O.G) on water includes a tank having an inlet and an outlet. The inlet connects to a source of F.O.G.-laden effluent and the outlet connects to a sewer pipe so that the outlet defines a normal static water level for F.O.G. and effluent in the tank. A sensor mounted above the static water level determines a distance from the sensor to a top of F.O.G. within the tank, so that a thickness of the F.O.G. in the tank can be determined. If the sensor is LIDAR, sensing may be at about 940 nm. When the F.O.G. is sensed to be above a threshold, the apparatus generates signals to remove the F.O.G. Ultrasonic sensing may be used. Preferably, the sensor is mounted far enough above the static water level so the distance between the sensor and the liquid surface is filled with air. More preferably, the sensor is far enough above the static water level so that the top of the F.O.G. does not touch the sensor even as the top of the F.O.G. rises above the static water level. 1. An apparatus for containing an F.O.G. layer on water comprisinga tank having an inlet and an outlet, the inlet configured to connect to a source of F.O.G.-laden effluent and the outlet configured to connect to a sewer pipe so that the outlet defines a normal static water level for F.O.G. and effluent in the tank, anda sensor mounted above the static water level configured to determine a distance from the sensor to a top of F.O.G. within the tank, so that a thickness of the F.O.G. in the tank can be determined.2. The apparatus as claimed in wherein the sensor is a LIDAR sensor.3. The apparatus as claimed in wherein the sensor is a LIDAR sensor operating at about 940 nm.4. The apparatus as claimed in wherein the sensor is held in place by magnets.5. The apparatus as claimed in wherein the tank has an extension collar above a main body of the tank and the sensor is mounted in the extension collar.6. The apparatus as claimed in wherein the extension collar is ...

TELE-CARE MANAGEMENT SYSTEMS AND METHODS FOR PERITONEAL DIALYSIS

A tele-care management system for peritoneal dialysis (PD) includes at least a container, a holder, a removable detection device and a mobile device. The container is for placing effluent fluid of peritoneal dialysis. The holder is for placing the container. The removable detection device includes a detection unit, a processor and a communication interface, wherein the processor detects the turbidity and the chrominance of the effluent fluid and performs a quantitative analysis on the effluent fluid, and generates a turbidity prediction value based on the detection result of the detection unit. The processor respectively calculates first and second turbidity values, which correspond to first and second turbidity respectively, for the effluent fluid according to first and second algorithms and selects one from the first and second turbidity values to generate the turbidity prediction value based on a predetermined threshold value sent to a mobile device for further processing. 1. A tele-care management system for peritoneal dialysis (PD) , comprising:a container for placing effluent fluid of PD;a holder for placing the container; anda removable detection device including a detection unit, a processor and a communication interface, wherein the processor detects the turbidity and the chrominance of the effluent fluid and performs a quantitative analysis on the effluent fluid, and the processor generates a turbidity prediction value based on the detection result of the detection unit and transmits the turbidity prediction value to a mobile device for further processing,wherein the processor further respectively calculates a first turbidity value which corresponds to a first turbidity for the effluent fluid according to a first algorithm and a second turbidity value which corresponds to a second turbidity for the effluent fluid according to a second algorithm and selects one from the first and second turbidity values based on a predetermined threshold value to generate ...

System and Method for Optimizing Driving of Ultrasonic Sensor

Provided are a system and a method for optimizing driving of an ultrasonic sensor. The system for optimizing driving of an ultrasonic sensor includes: an ultrasonic sensor unit provided on an inner bottom surface of a fuel tank for a vehicle and obtaining a time of flight (TOF) for calculating a distance from the inner bottom surface of the fuel tank to a fuel surface; and a central processing unit calculating liquid level information of the fuel tank using the TOF transferred from the ultrasonic sensor unit and controlling a driving voltage of the ultrasonic sensor unit using the liquid level information.

SENSOR DEVICE CONFIGURATION

A sensor device includes a communication transmitter configured to transmit a sensor device identifier. The sensor device includes a communication receiver configured to receive a sensor configuration associated with the sensor device identifier. The sensor device includes an interrogation signal transmitter configured to transmit an interrogation signal based at least in part on the received sensor configuration to determine an identifier associated with an amount of content included in a container engaged by the sensor device. 1. A sensor device , comprising:a communication transmitter configured to transmit a sensor device identifier;a communication receiver configured to receive a sensor configuration associated with the sensor device identifier; andan interrogation signal transmitter configured to transmit an interrogation signal based at least in part on the received sensor configuration to determine an identifier associated with an amount of content included in a container engaged by the sensor device.2. The sensor device as recited in claim 1 , wherein the sensor device is a bottle cap of the container.3. The sensor device as recited in claim 1 , wherein the sensor device includes a spout.4. The sensor device as recited in claim 1 , wherein the amount of content is an amount of liquid.5. The sensor device as recited in claim 1 , wherein the sensor configuration is specific to an identified container type of the container.6. The sensor device as recited in claim 1 , wherein the communication transmitter is further configured to transmit the identifier associated with the amount of content.7. The sensor device as recited in claim 6 , wherein the communication transmitter transmits the identifier associated with the amount of content using a BLUETOOTH Low Energy advertisement packet.8. The sensor device as recited in claim 1 , further comprising an interrogation signal receiver that receives the interrogation signal that has been reflected off the content ...

METHOD FOR ASCERTAINING AND MONITORING FILL LEVEL OF A MEDIUM IN A CONTAINER USING A TRAVEL TIME MEASURING METHOD

In a method for ascertaining and monitoring fill level of a medium in a container by means of a field device using a travel time measuring method, wherein transmission signals are transmitted toward the medium and reflection signals are received; the received reflection signals are registered as echo signals in an echo function, respectively envelope curve, dependent on travel time or travel distance; by means of an echo search algorithm, at least one wanted echo signal is ascertained in the echo function, respectively envelope curve; by means of at least one filter with filter parameters the echo function, respectively the envelope curve, is preprocessed; at least a first filter range with a first width is predetermined at the position of the wanted echo signal in the echo function, respectively in the envelope curve, and at least three filter ranges are formed in the echo function, respectively in the envelope curve. 1. Method for ascertaining and monitoring fill level (F) of a medium in a container by means of a field device using a travel time measuring method ,wherein transmission signals (S) are transmitted toward the medium and reflection signals (R) are received,wherein the received reflection signals (R) are registered as echo signals in an echo function, respectively envelope curve, dependent on travel time (t) or travel distance (x),wherein by means of an echo search algorithm at least one wanted echo signal is ascertained in the echo function, respectively in the envelope curve,wherein by means of at least one filter with filter parameters (FP) the echo function, respectively the envelope curve, is preprocessed,{'sub': 1', '1', '1', '1', '2', '3, 'wherein at least a first filter range (FR) with a first width (w) is predetermined at the position (x) of the wanted echo signal in the echo function, respectively in the envelope curve, and at least three filter ranges (FR, FR, FR) are formed in the echo function, respectively the envelope curve.'}2. Method as ...

TANK FOR STORING A SOLUTION AND METHOD FOR MEASURING A VALUE IN SUCH A TANK

The invention relates to a tank () for storing a solution preferably a urea solution, on a motor vehicle, the tank comprising: —a pump (), —a surface () configured to receive or emit ultrasound waves adapted to be in contact with the solution, —a valve () connected to the pump () and configured to send an amount of the solution contained in the tank directly onto the surface (). 1. A tank for storing a solution on a motor vehicle , the tank comprising:a pump;a surface configured to receive or emit ultrasound waves adapted to be in contact with the solution, the surface being substantially plane; anda valve connected to the pump and configured to send an amount of the solution comprised in the tank directly onto the surface.2. The tank of claim 1 , wherein the surface is an emitting or receiving surface of an ultrasound sensor.3. The tank of claim 1 , wherein the surface is an emitting and receiving surface of an ultrasound sensor.4. The tank of claim 1 , wherein the surface is an ultrasonic reflector.5. The tank of claim 1 , further comprising an injection nozzle adapted to send the solution onto the surface according to an injection axis claim 1 , wherein the injection axis and the surface form an angle greater than 0° and less than 180°.6. The tank of claim 1 , further comprising a controller connected to the valve and configured to detect an anomaly in a measurement performed using the surface.7. The tank of claim 6 , wherein the valve is an electro valve and the controller commands an opening of the valve.8. The tank of claim 6 , wherein the valve is a passive valve system and the controller commands a speed of the pump.9. The tank of claim 1 , wherein the valve is configured to send an amount of the solution onto a plurality of surfaces configured to receive or emit ultrasound waves claim 1 , the plurality of surfaces belonging to one or more ultrasound sensors.10. The tank of claim 9 , wherein the valve is configured to send an amount of the solution onto a ...

TRANSDUCER FOR NON-INVASIVE MEASUREMENT

A transducer for non-invasive measurement includes: a shear-type piezoelectric element; and a host material. The shear-type piezoelectric element is mounted to a first face of the host material. A second face of the host material is mountable to a wall of a vessel that holds a liquid. When the second face of the host material is mounted to the wall of the vessel, the transducer when activated at an activation frequency launches a Lamb wave into the wall of the vessel. The transducer is designed such that a phase velocity of the Lamb wave in the wall of the vessel is greater than a speed of sound in the liquid held by the vessel. 1. A transducer for non-invasive measurement , comprising:a shear-type piezoelectric element; anda host material,wherein the shear-type piezoelectric element is mounted to a first face of the host material,wherein a second face of the host material is configured to be mounted to a wall of a vessel configured to hold a liquid,wherein when the second face of the host material is mounted to the wall of the vessel, the transducer when activated at an activation frequency is configured to launch a Lamb wave into the wall of the vessel, andwherein the transducer is configured such that a phase velocity of the Lamb wave in the wall of the vessel is greater than a speed of sound in the liquid held by the vessel.2. The transducer according to claim 1 , wherein the host material comprises polyamide.3. The transducer according to claim 1 , wherein the piezoelectric element comprises a single ceramic shear-type piezoelectric element.4. The transducer according to claim 1 , wherein the transducer is configured such that the phase velocity of the Lamb wave in the wall of the vessel is greater than the speed of sound in the shear-type piezoelectric element.5: The transducer according to claim 1 , wherein the transducer is configured such that the phase velocity of the Lamb wave in the wall of the vessel is greater than a speed of transverse waves in the ...

Flow rate measuring device and method capable of correcting gradient

The following disclosure relates to a flow rate measuring device and method capable of correcting a gradient. More particularly, the following disclosure relates to a flow rate measuring device and method capable of correcting a gradient that may measure a flow rate having a minimized measurement error by including a sensor unit provided on a bottom surface of an inner portion of a fuel tank in order to accurately measure a flow rate value remaining in the fuel tank to obtain distance information between the bottom surface of the fuel tank and an oil surface and gradient information of the fuel tank itself.

SENSOR FOR INVENTORY MANAGEMENT APPLICATIONS WITH REMOTE MOUNTING AND ASYMMETRIC REFLECTION MODELING

An apparatus includes a transmitter configured to transmit a signal having an electromagnetic pulse towards material in a tank. The apparatus also includes a receiver configured to receive a signal having multiple reflections of the pulse, including a process connector reflection. The apparatus further includes at least one processing device configured to determine a measurement associated with the material in the tank based on the received signal. To determine the measurement, the at least one processing device is configured to identify the process connector reflection in the received signal using an asymmetrical model. The transmitter, the receiver, and the at least one processing device could form at least part of an electronics assembly, and a connecting cable could couple the electronics assembly and a process connector. The asymmetrical model could have different lobes of different shapes. 1. An apparatus comprising:a transmitter configured to transmit a signal comprising an electromagnetic pulse towards material in a tank;a receiver configured to receive a signal comprising multiple reflections of the pulse including a process connector reflection; andat least one processing device configured to determine a measurement associated with the material in the tank based on the received signal;wherein, to determine the measurement, the at least one processing device is configured to identify the process connector reflection in the received signal using an asymmetrical model.2. The apparatus of claim 1 , wherein:the transmitter, the receiver, and the at least one processing device form at least part of an electronics assembly; anda connecting cable couples the electronics assembly and a process connector.3. The apparatus of claim 2 , further comprising:a waveguide coupled to the connecting cable through the process connector, the waveguide configured to transport the signal comprising the electromagnetic pulse toward the material in the tank and to transport the ...

Fuel Tank for Vehicle

Provided is a fuel tank for a vehicle in which a fuel measure bar provided in a vertical direction in a fuel storing body in which a fuel combusted in an engine is stored and capable of measuring a fuel amount using an ultrasonic wave includes a first fuel measure bar fixed to a bottom surface of the fuel storing body and a second fuel measuring bar easily coupled to the first fuel measuring bar to easily enter the fuel storing body and exit from the fuel storing body. 1. A fuel tank for a vehicle , comprising:a fuel storing body in which a fuel is stored; anda fuel supplying unit including a fuel pump provided in the fuel storing body and supplying the fuel to an engine through a fuel channel connected to the engine and a fuel measuring bar formed in a vertical direction at one side of the fuel pump and measuring a fuel amount in the fuel storing body using an ultrasonic wave,wherein the fuel measuring bar includes:a first fuel measuring bar including a first fuel measuring bar body including a first fuel measuring path formed to be hollowed, and an ultrasonic sensor unit disposed at a lower end of the first fuel measuring bar body, including an ultrasonic sensor, formed to be fixed to a bottom surface of the fuel storing body; anda second fuel measuring bar including a second fuel measuring bar body having a lower end formed to be coupled to an upper end of the first fuel measuring bar body and including a second fuel measuring path hollowed so as to be in communication with the first fuel measuring path and forming a fuel measuring path by coupling to the first fuel measuring path.2. The fuel tank for a vehicle of claim 1 , wherein the first fuel measuring bar includes a fitting portion formed at the upper end of the first fuel measuring bar body and including fitting grooves formed in an outer peripheral surface of the first fuel measuring path claim 1 , andthe second fuel measuring bar includes a sliding portion formed at the lower end of the second fuel ...

Method and device for determining a height of a fluid level in a fluid container

A method and a device determine a height of a fluid level in a fluid container by: emitting a sound signal by a transmitter and recording sound signals reflected at the fluid level and at the reference elements; determining, for the recorded sound signals, a first propagation time difference between a first propagation time of the sound signal emitted by the transmitter and reflected at the first reference element and a second propagation time of the sound signal emitted by the transmitter and reflected at the second reference element; determining a second propagation time difference or a third propagation time difference; and determining the height of the fluid level based upon the first propagation time difference, the second propagation time difference and the first distance or based upon the first propagation time difference, the third propagation time difference and the second distance.

METHOD FOR DETERMINING THE FILL LEVEL OF A FILLING MATERIAL IN A CONTAINER

The present disclosure relates to a method for safe and exact ascertaining of fill level of a fill substance located in a container by means of an ultrasonic, or radar-based, fill level measuring device. In such case, the method is distinguished by the feature that the evaluation curve created based on the reflected received signal is differently greatly smoothed as a function of measured distance. To achieve this, the evaluation curve can be specially filtered, depending on the application. In this way, noise fractions and disturbance echoes can be efficiently suppressed, without unnecessarily limiting the accuracy of the fill level measurement. 18-. (canceled)9. A method for ascertaining fill level of a fill substance located in a container using a fill level measuring device , the method comprising:transmitting a transmitted signal in a direction of the fill substance;receiving a received signal that is dependent on a measured distance;creating an evaluation curve based at least on the received signal;smoothing the evaluation curve using at least one filtering method; anddetermining the fill level based on the smoothed evaluation curve,wherein the evaluation curve is differently greatly smoothed as a function of measured distance.10. The method as claimed in claim 9 ,wherein the transmitted signal is an ultrasonic signal.11. The method as claimed in claim 9 ,wherein the transmitted signal is a radar signal transmitted according to the Frequency Modulated Continuous Wave (FMCW) method or according to the pulse travel time method.12. The method as claimed in claim 9 ,wherein the at least one filtering method is a low-pass filtering, an average value filtering, a moving average value filtering, a maximum value filtering, and/or a moving maximum value filtering.13. The method as claimed in claim 9 ,wherein in at least one portion of the measured distance, a filtering method is implemented which differs from a filtering method in an adjoining portion.14. The method as ...

ELECTRONICS ASSEMBLY FOR WIRELESS TRANSMISSION OF AT LEAST ONE STATUS INFORMATION

An electronics assembly for wireless transmission of at least one status information of an object comprises a motion sensor for detecting movement of the object. Upon detection of movement, the electronics assembly is set in a transport mode and, upon detection of an absence of a movement, the electronics assembly is set in a stationary mode. The electronics assembly is configured such that the wireless transmission of the at least one status information is effected only in the stationary mode. 1. An electronics assembly for wireless transmission of at least one status information of an object comprising:a motion sensor for detecting a movement of the object, upon detection of the movement, the electronics assembly is set in a transport mode and upon detection of an absence of a movement the electronics assembly is set in a stationary mode,wherein,the electronics assembly is configured such that the wireless transmission of the at least one status information is effected only in the stationary mode.2. The electronics assembly according to claim 1 , further comprising a cellular network module.3. The electronics assembly according to claim 1 , further comprising a positioning device for determining the position of the object as a status information for wireless transmission.4. The electronics assembly according to claim 1 , configured such that determination of the status information is only effected in the stationary mode.5. The electronics assembly according to claim 3 , configured such that determining the position of the object is only effected in the transport mode and claim 3 , upon activation of the stationary mode claim 3 , a last-determined position is transmitted.6. A container for transport claim 3 , comprising:an electronics assembly for wireless transmission of at least one status information and an energy storage for supplying the electronics assembly with energy,wherein,the energy storage is contained in a first primary housing, which is releasably ...

KITCHEN APPLIANCE

An electric kitchen appliance has a pot for receiving food to be processed using the electric kitchen appliance. An ultrasound transmitter and an ultrasound receiver are provided in order to determine the fill level of the food in the pot. The ultrasound transmitter and the ultrasound receiver are attached to the upper edge of the pot such that an ultrasound signal can be transmitted onto the surface of the food by the ultrasound transmitter, and an ultrasound signal reflected by the surface of the food can be received by the ultrasound receiver. In this manner, an electric kitchen appliance is provided which allows the fill state of the food in the pot to be determined in a simple and reliable manner. 1. A kitchen appliance comprising:an electrical power supply,a pot configured to accommodate foodstuffs to be processed with the kitchen appliance,a heating element provided on a wall of the pot,a heating monitoring device configured for monitoring heating behavior of the heating element, and for outputting a heating signal dependent on the heating behavior of the heating element,a fill level checking device, to which the heating signal is supplied, and the fill level checking device being configured to carry out a fill level check of the foodstuffs introduced into the pot, as a function of the heating signal.2. The electrical kitchen appliance in accordance with claim 1 , wherein the heating monitoring device has a thermocouple and/or an electrical ohmmeter.3. The electrical kitchen appliance in accordance with claim 1 , wherein the heating element is integrated into the wall of the pot.4. The electrical kitchen appliance in accordance with claim 1 , wherein the heating element is in the form of a strip. This application is a divisional of U.S. patent application Ser. No. 15/547,164, filed on Jul. 28, 2017, which is the National Stage of PCT/EP2016/051976 filed on Jan. 29, 2016, which claims priority under 35 U.S.C. § 119 of German Application No. 10 2015 101 299.5 ...

CONTENT QUANTITY DETECTION SIGNAL PROCESSING

A measurement device includes a sensor configured to detect triggering of the device. The measurement device further includes a transmitter configured to transmit an interrogation signal in response to the triggering of the device, and a receiver configured to detect a received signal that captures one or more reflections of the interrogation signal. A processor of the measurement device is configured to select a selected reflection among a plurality of identified potential reflections captured in the received signal, and provide an identifier corresponding to the selected reflection that is associated with an amount of content included in a container engaged by the content measurement device. 1. A measurement device , comprising:a sensor configured to detect triggering of the device;a transmitter configured to transmit an interrogation signal in response to the triggering of the device;a receiver configured to detect a received signal that captures one or more reflections of the interrogation signal; and select a selected reflection among a plurality of identified potential reflections captured in the received signal; and', 'provide an identifier corresponding to the selected reflection that is associated with an amount of content included in a container engaged by the content measurement device., 'a processor configured to2. The device of claim 1 , wherein the sensor configured to detect triggering of the device includes an accelerometer.3. The device of claim 1 , wherein detecting the triggering of the device includes detecting that a movement detected by the sensor exceeds a triggering threshold.4. The device of claim 1 , wherein the interrogation signal is an ultrasonic signal.5. The device of claim 1 , wherein the transmitter is a speaker and the receiver is a microphone.6. The device of claim 1 , wherein at least one of the reflections of the interrogation signal reflected from the content included in the container.7. The device of claim 1 , wherein ...

SYSTEMS AND METHODS OF DETERMINING A QUALITY AND A QUANTITY OF A FLUID

A system for sensing a fluid. The system including a fixed object; a first transducer generating a first sound wave in a horizontal direction and to detect a first echo of the first sound wave from the fixed object; a second transducer generating a second sound wave in a vertical direction; a temperature sensor detecting a temperature of the fluid; and a controller. The controller configured to produce a first signal to drive the first transducer to produce the first sound wave, produce a second signal to drive the second transducer to produce the second sound wave, receive a first indication of the detected first echo, receive a second indication of the detected second echo, receive a temperature indication, determine a quality of the fluid based on the first indication and the temperature indication, and determine a quantity of the fluid based on the second indication.

Detection of water in a tensioning buoy

The disclosure relates to a method for detecting water in a tensioning buoy of a riser column of an installation located in an aquatic environment, the method including, in succession, steps of: defining a representative standard echo; emitting the ultrasonic signal on a wall of the buoy; measuring a representative response echo due to the reflection of the ultrasonic signal in the buoy; comparing the representative response echo to the representative standard echo; and determining whether water is present in or absent from the buoy from the comparison.

PROPAGATION TIME SENSOR COMPRISING A LONG-TERM ENERGY STORE

A fill level measurement device including a long-term energy store, the discharging of which is prevented by a diode and a switch or by two switches when the fill level measurement device is switched off Therefore, energy is storable for a long period of time, even if the field device is switched off. 1. A fill level measurement device comprising:a connection to an external energy supply;sensor electronics configured to detect an electrical sensor signal from which a fill level is deducible;a long-term energy store which is configured to be charged by the external energy supply and is a source of energy for charging a buffer capacitor or for directly compensating for a fluctuating energy consumption of the fill level measurement device;first circuitry which is connected to the long-term energy store and configured to prevent current from flowing from the long-term energy store towards the connection; andsecond circuitry which is connected to the long-term energy store and configured to prevent current from flowing from the long-term energy store towards the sensor electronics when the fill level measurement device is not supplied with energy by the external energy supply.2. The fill level measurement device according to claim 1 ,wherein the first circuitry is a diode or a switch.3. The fill level measurement device according to claim 1 ,wherein the second circuitry is a switch.4. The fill level measurement device according to claim 1 ,wherein the external energy supply is a two-wire loop by which the fill level measurement device is suppliable with energy for the measurement operation and by which the measured value is communicable.5. The fill level measurement device according to claim 4 , wherein the two-wire loop is a 4-20 mA two-wire loop.6. The fill level measurement device according to claim 1 ,wherein the long-term energy store is configured to supply energy to an element of the fill level measurement device when the fill level measurement device is switched ...

FLUID LEVEL MEASUREMENT SYSTEM AND METHOD

A transport refrigeration system for a transportable temperature controlled space includes a compressor, a condenser and an evaporator fluidly connected to one another, an engine operatively connected to the compressor, and a fuel tank assembly fluidly connected to the engine. The fuel tank assembly includes a fuel tank configured to contain the fuel, a fuel vapor and air, and an ultrasonic fluid level sensor for sensing a level of fuel, the fuel tank having a maximum fuel level. The fluid level sensor includes a transducer having a ring period. The distance from the fluid level sensor to the maximum fuel level is at least half the distance that the sound travels through the fuel vapor and air during the ring period of the transducer. 111-. (canceled)12. A method for positioning an ultrasonic fluid level sensor in a tank assembly of a transport refrigeration system (TRS) , the TRS including a compressor , a condenser , and an evaporator fluidly connected , an engine operatively connected to the compressor , a tank containing a fluid , a fluid vapor , and air , wherein the fluid level sensor includes a transducer having a ring period , the method comprising:calculating a near field distance of the fluid level sensor, wherein the near field distance is based on the speed of sound through the fluid vapor during the ring period of the transducer;determining a maximum fluid level in the tank; andpositioning the fluid level sensor at a distance from the maximum fluid level that is greater than or equal to half the near field distance, wherein the positioning includes directing the fluid level sensor toward a surface of the fluid such that sound from the fluid level sensor is reflected from the surface of the fluid.13. The method of claim 12 , wherein positioning the fluid level sensor includes providing a spacer between the fluid level sensor and the maximum fluid level.14. The method of claim 12 , wherein positioning the fluid level sensor includes:providing a spacer ...

POWER MANAGEMENT

Present teachings relate to a method for determining the proximity of an object to an electronic device, the electronic device comprising an ultrasonic sensor and a second sensor, which ultrasonic sensor comprising at least one ultrasonic transmitter and at least one ultrasonic receiver, which method comprising the steps of: 1. A method for determining the proximity of an object to an electronic device , the electronic device comprising a first ultrasonic sensor and a second sensor , which ultrasonic sensor comprising at least one ultrasonic transmitter and at least one ultrasonic receiver , the method comprising:transmitting from the ultrasonic transmitter a first ultrasonic signal;receiving at the ultrasonic receiver an ultrasonic response signal;determining an ultrasonic response by processing the ultrasonic response signal using a processor;determining a sensor response by processing a second signal using the processor, the second signal being generated by the second sensor;configuring via the processor a power level of a second ultrasonic signal transmitted from the ultrasonic transmitter in response to the ultrasonic response meeting a first criterion, and the sensor response meeting a second criterion.2. The method according to claim 1 , wherein the first criterion is chosen from a plurality of first criteria.3. The method according to claim 1 , wherein the second criterion is chosen from a plurality of second criteria.4. The method according to claim 1 , wherein the first criterion is a threshold value and/or a pattern associated with the ultrasonic response or the ultrasonic response signal.5. The method according to claim 1 , wherein the second criterion is a threshold value and/or a pattern associated with the sensor response or the second signal.6. The method according to claim 1 , wherein the first criterion overrides the second criterion such that the power level of the second ultrasonic signal is configured in response to the ultrasonic response ...

Level measuring device having a serial arrangement of functional units

There is provided a level measuring device including at least two electrical circuits connected in series with respect to an external power supply of the level measuring device. A decoupling circuit is disposed between the electrical circuits and is configured to distribute available power between the two electrical circuits according to requirements. At least the second electrical circuit includes an energy store as an energy buffer configured to equalize a fluctuating energy consumption of the second electrical circuit such that a start time of the level measuring device can be shortened.

ULTRASONIC FLUID MEASUREMENT PROBE WITH ULTRASONICALLY WELDED BASE CAP

An apparatus and method of measuring a level of fluid in a container and of enhancing reliability of an ultrasonic fluid measurement probe. A base comprises a transducer chamber, wherein the transducer chamber comprises a transducer chamber floor, a transducer chamber edge, and transducer chamber walls extending from the transducer chamber floor to the transducer chamber edge. An ultrasonic transducer is attached to the transducer chamber floor. A cap is welded to the transducer chamber edge such that the cap, along with the transducer chamber floor and the transducer chamber walls, encloses the transducer chamber to form an enclosed air space between the ultrasonic transducer and the cap. 1. An apparatus , comprising:a base comprising a transducer chamber, wherein the transducer chamber comprises a transducer chamber floor, a transducer chamber edge, and transducer chamber walls extending from the transducer chamber floor to the transducer chamber edge;an ultrasonic transducer attached to the transducer chamber floor; anda cap welded to the transducer chamber edge and that, along with the transducer chamber floor and the transducer chamber walls, encloses the transducer chamber to form an enclosed air space between the ultrasonic transducer and the cap.2. The apparatus of claim 1 , wherein the base further comprises:a flange portion, anda mounting hole in the flange portion.3. The apparatus of claim 1 , wherein the base further comprises:a wiring channel in communication with the transducer chamber, wherein the wiring channel comprises a wiring channel floor, a wiring channel edge, and wiring channel walls extending from the wiring channel floor to the wiring channel edge; andwherein the cap is welded to the wiring channel edge.4. The apparatus of further comprising wires attached to the ultrasonic transducer and extending from the ultrasonic transducer claim 3 , through the transducer chamber claim 3 , through the wiring channel claim 3 , and through the wiring ...

Alert system for detecting contents within a container

A media level alert is useable in the context of a fluid additive system, such as a water softener. The alert system includes a sensor that does not directly interface with media within a container, such that the sensor can measure the media level without being exposed to contact with the media itself. Further, the alert system may utilize a “time of flight” sensor that emits a signal and, based on a measurement of the time it takes for the signal to be reflected off the media and returned to the sensor, facilitates a calculation of the distance from the sensor the media. When the distance reaches a predetermined threshold associated with a low-media condition within a media storage container, a controller may initiate a refilling protocol.

ULTRASONIC FLUID MEASUREMENT CALIBRATION PROBE

An apparatus and method of calibrating an ultrasonic fluid measurement system using an ultrasonic fluid measurement calibration probe. A base of the probe comprises an ultrasonic transducer. A tube extends from the base. A first calibration target is attached to the tube at a first distance from the ultrasonic transducer and extends into an interior of the tube. An orifice is formed in the tube. The orifice extends through the tube from an exterior of the tube to the interior of the tube and along the tube wherein an edge of the orifice is at the first distance from the ultrasonic transducer. 1. An apparatus , comprising:a base comprising an ultrasonic transducer;a tube extending from the base;a first calibration target attached to the tube at a first distance from the ultrasonic transducer and extending into an interior of the tube; andan orifice in the tube, wherein the orifice extends through the tube from an exterior of the tube to the interior of the tube and along the tube wherein an edge of the orifice is at the first distance from the ultrasonic transducer.2. The apparatus of further comprising:a second calibration target attached to the tube at a second distance from the ultrasonic transducer and extending into the interior of the tube; andwherein the orifice extends along the tube from the first distance from the ultrasonic transducer to the second distance from the ultrasonic transducer.3. The apparatus of claim 2 , wherein:the first calibration target and the second calibration target are at a same radial position on the tube; andthe orifice is at a first radial position on the tube that is different from the radial position of the first calibration target and the second calibration target.4. The apparatus of further comprising a second orifice at a second radial position on the tube that is different from the first radial position and the radial position of the first calibration target and the second calibration target.5. The apparatus of claim 4 , ...

LIQUID CONTAINER AND METHOD FOR MEASURING LIQUID LEVEL USING SAME

The liquid container according to the present invention includes: a container main body which stores a liquid; an ultrasonic sensor which is disposed so as to contact an outer side wall of the container main body and so as to emit an ultrasonic wave into the liquid; and a reflecting means which is disposed at an inner bottom portion of the container main body and reflects an ultrasonic wave emitted into the liquid from the ultrasonic sensor , towards the liquid surface, wherein the reflecting means is disposed at a position, where a distance the ultrasonic wave travels through the liquid, of the path of the ultrasonic wave from the ultrasonic sensor to a reflecting surface of the reflecting means, is greater than a distance at which an insensitive band of the ultrasonic sensor is obtained. With the liquid container of the present invention, it is possible to measure the liquid level in a short period of time, without being affected by the insensitive band of the ultrasonic sensor, even if the liquid level is low. 1. A liquid container , comprising:a container main body which stores a liquid;an ultrasonic sensor which is disposed so as to contact an outer side wall of the container main body and so as to emit an ultrasonic wave into the liquid; anda reflecting means which is disposed at an inner bottom portion of the container main body and reflects an ultrasonic wave emitted into the liquid from the ultrasonic sensor, towards the liquid surface,wherein the reflecting means is disposed at a position, where a distance the ultrasonic wave travels through the liquid, of the path of the ultrasonic wave from the ultrasonic sensor to a reflecting surface of the reflecting means, is greater than a distance at which an insensitive band of the ultrasonic sensor is obtained.2. The liquid container according to claim 1 , further comprising guide means for guiding an ultrasonic wave reflected by the reflecting means towards the liquid surface claim 1 , and for guiding a ...

Filling Level Measurement

Apparatus and method for determining the filling level of a liquid in a container is provided. The apparatus includes at least one element coupled with a body at least partially immersed in the liquid, the at least one element transmitting and/or receiving acoustic signals. The at least one element may include an element that both transmits and receives acoustic signals, and may include elements that have a transmitting-only element and a receiving-only element. The acoustic signals generated by the at least one element propagate along a surface of the body, which may be solid or hollow. The body is arranged in such a manner that at least one part of a surface can be wetted by the liquid. The body has, at different container heights, regions which reflect the acoustic signals that may be detected and analyzed by a unit to determine the container liquid level. 115-. (canceled)16. An apparatus for determining a level of a liquid in a container , comprising:at least one acoustic signal element, said at least one element being element capable of transmitting and receiving acoustic signals; anda body configured to be at located in the container, the body comprising regions at different container heights, 'the at least one element is arranged at least one of on and in the body such that acoustic signals transmitted from the at least one element propagate along a surface of the body and reflect acoustic signals toward the at least one element.', 'wherein'}17. The apparatus as claimed in claim 16 , whereinat least one of the at least one elements is connected to a unit configured to detect the signal strength of the reflected signals received at the at least one of the at least one elements and to determine the container liquid level by comparison of transition times between transmission and receipt of the acoustic signals with predetermined reference time values.18. The apparatus as claimed in claim 16 , whereinthe body is disposed in an interior of the container.19. The ...

METHOD FOR DETERMINING A LIQUID LEVEL AND QUALITY IN A TANK

The invention relates to a method for determining a liquid level in a tank () comprised in a vehicle, wherein said method uses an ultrasonic sensor () for emitting and receiving ultrasonic waves (). Basically the liquid level is determined based upon measuring the transition time of an ultrasonic wave () emitted by the ultrasonic sensor, wherein said emitted wave is deflected two times before being reflected by the surface () of the liquid contained in the tank. 1. A method for determining a liquid level in a tank for a liquid using an ultrasonic sensor arranged at the bottom of the tank for emitting and receiving an ultrasonic wave , anda first reflector arranged vertically above the ultrasonic sensor for reflecting an ultrasonic wave emitted from the ultrasonic sensor back to the ultrasonic sensor, anda second, a third and a fourth reflector arranged above the ultrasonic sensor and arranged below the first reflector,said second reflector arranged vertically above the ultrasonic sensor to deflect an ultrasonic wave emitted by the ultrasonic sensor to said third and said fourth reflector, and said third and said fourth reflector arranged at the same distance from said second reflector, andwherein the third reflector is arranged to reflect an ultrasonic wave incoming from the second reflector back to said second reflector, andwherein the fourth reflector is arranged deflect an ultrasonic wave incoming from said second reflector to the liquid level,the method comprising at least the following steps:a) determining a first transition time of an ultrasonic wave between the ultrasonic sensor and the first reflector, andb) determining a propagation speed of an ultrasonic wave in the liquid based the distance from the ultrasonic sensor via the second reflector to the third reflector based on a respective measured second transition time; andc) determining a third transition time of an ultrasonic wave for the distance from the ultrasonic sensor via the second and fourth ...

NON-INTRUSIVE ULTRASONIC MEASURING OF FLUIDS IN A BEVERAGE KEG

A transducer positioning device and a system for employing a transducer positioning device are used to determine and monitor fluid levels in a pressurized beverage keg that has a dip tube. One fluid is a liquid beverage. The other fluid is a compressed gas injected to push the beverage up through the dip tube. Each embodiment of the positioning device generally includes an acoustic transducer and a transducer support, and often includes a base. Other embodiments may include an angled adapter for the transducer and a prop and/or wheels for the base. Each embodiment of the system generally includes the transducer positioning device, a transceiver, software, and a graphic user interface, as well as wiring and a medium for data transmission. Other embodiments include at least one other electronic controller. The above may also be embodied as kits and methods. 1. A device for non-intrusively measuring fluids in a beverage keg that has a pressurized vessel and a dip tube , the device comprising:a transducer support configured to removably engage the bottom of the keg's pressure vessel to support the transducer against the bottom of the keg's pressure vessel; andat least one transducer mounted to the transducer support and oriented to send and receive a signal that travels vertically through the bottom of the pressure vessel to a fluid level in the keg and back through the bottom of the pressure vessel to the transducer;wherein the transducer support is configured to press the transducer against the bottom of the pressure vessel at a location at least ½″ away from the center of the keg's sump wall.2. The device of claim 1 , further comprising a piezoelectric acoustic transducer.3. The device of claim 1 , wherein the transducer support is configured to flex as it presses the transducer against the bottom of the pressure vessel.4. The device of claim 1 , wherein the transducer support is configured to press the transducer against the pressure vessel's curved bottom and ...

LIQUID LEVEL MEASURING DEVICE

A liquid level measuring device, comprising: at least one Time-of-Flight (TOF) ranging sensor for enabling to obtain the distance between the at least one sensor and the liquid level within a liquid retaining device that has a narrow neck portion, wherein each TOF ranging sensor is configured to emit a narrow width light ray, thereby enabling to measure the distance without interference from the neck portion of the liquid retaining device; a controlling unit for collecting data in accordance with the measurements of the at least one TOF ranging sensor; and a wireless communication module for forwarding to a remote computing device the collected data or data relative to the collected data. 1. A liquid level measuring device , comprising:a) at least one Time-of-Flight (TOF) ranging sensor for enabling to obtain the distance between said at least one sensor and the liquid level within a liquid retaining device that has a narrow neck portion, wherein each TOF ranging sensor is configured to emit a narrow width light ray, thereby enabling to measure the distance without interference from the neck portion of the liquid retaining device;b) a controlling unit for collecting data in accordance with the measurements of said at least one TOF ranging sensor; andc) a wireless communication module for forwarding to a remote computing device said collected data or data relative to said collected data.2. The device according to claim 1 , further comprising an angle sensor for enabling to measure the liquid level within the liquid retaining device only when said liquid retaining device is leveled or positioned in a predetermined measuring position.3. The device according to claim 1 , wherein the remote computing device is a cloud computing.4. The device according to claim 1 , wherein the remote computing device is a user interface device claim 1 , in particular a smartphone.5. The device according to claim 1 , wherein the collected data is being forwarded to the remote computing ...

METAL TANK ULTRASONIC LIQUID LEVEL SENSING

An ultrasonic system provides an inexpensive non-invasive way to measure fuel levels in a metal fuel tank that reduces noise from tank vibration. A first transducer generates a first signal that can be used to determine fuel levels in the tank. A second transducer placed on a chassis generates a second signal that corresponds to the noise. A differential amplifier then subtracts the second signal from the first signal, producing a cleaner signal result for determining fuel levels. 1. An ultrasonic liquid level measurement device , comprising:an analog front end circuit, configured to send an electrical pulse to a first transducer coupled to a tank configured for containing a liquid; and subtract a second signal from a first signal; and', 'output a subtracted signal to the analog front end circuit,, 'a differential amplifier, coupled to the analog front end circuit, configured towherein the first signal is received from the first transducer and corresponds to ultrasonic waves generated by the first transducer to determine a level of the liquid in the tank, andwherein the second signal is received from a second transducer and corresponds to vibrations of the tank.2. The ultrasonic liquid level measurement device of claim 1 , further comprising:a programmable resistor, coupled to an input of the differential amplifier for amplitude compensation.3. The ultrasonic liquid level measurement device of claim 1 , wherein the differential amplifier is integrated into the analog front end circuit.4. The ultrasonic liquid level measurement device of claim 1 , wherein the second transducer is disposed on a surface of a chassis on which the tank is mounted.5. The ultrasonic liquid level measurement device of claim 1 , wherein the electrical pulse when received by the first transducer causes the first transducer to generate ultrasonic waves in the tank.6. The ultrasonic liquid level measurement device of claim 1 , wherein the analog front end circuit is a time-to-digital converter ...

Method and apparatus for non-invasively measuring physical properties of materials in a conduit

Methods and apparatus for non-invasive determination of one or more physical properties of a material in a conduit are presented. In one example, the method comprises initiating a vibration on a wall of the conduit at a first location, capturing a response to the vibration at the first location, capturing a response to the vibration at a second location, and determining at least one physical property of the material based on at least one of the captured responses at the first location and the second location.

DEVICE AND METHOD FOR MEASURING THE LEVEL OF LIQUID IN A CONTAINER

The invention relates to a filling level measuring device for measuring the filling level in a container through the wall thereof by means of ultrasound, having an ultrasonic measuring head, a controller, and a fastening device by means of which the filling level measuring device can be fastened to the container such that the ultrasonic measuring head is pressed against the wall of the container. The invention further relates to a method of operating such a filling level measuring device, wherein a sampling rate is used which is situation-dependent. The invention finally relates to an assembly made up of such a filling level measuring device and at least one spacer which can be attached to the lower edge of a container to be provided with the filling level measuring device. 1. A method of operating a filling level measuring device for measuring the filling level in a liquid gas bottle through the wall thereof by means of ultrasound , comprising an ultrasonic measuring head , a controller , and a fastening device by means of which the filling level measuring device can be fastened to the bottle such that the ultrasonic measuring head is pressed against the wall of the bottle , wherein a sampling rate is used which is situation-dependent.2. The method of wherein when the controller detects that the filling level measuring device is mounted to a new bottle claim 1 , the filling level measuring device initiates a series of measurements the results of which are averaged to determine a starting filling level.3. The method of wherein the controller reduces the sampling rate after the starting filling level has been determined.4. The method of wherein the controller reduces the sampling rate when it ascertains a constant filling level over a longer period of time.5. The method of wherein the controller greatly reduces the sampling rate or discontinues the measurements altogether if it detects no communication of the filling level measuring device with an external device.6. ...

A DEVICE FOR PROVIDING A GAS COMPOSITION AND TEMPERATURE COMPENSATED ACOUSTIC MEASUREMENT OF A LIQUID LEVEL

A device for providing a gas and temperature compensated acoustic measurement of the level of a liquid surface, including a transmitter, a receiver, and a waveguide for guiding acoustic signals. The waveguide includes a reference portion extending from a first end to a reference element, and a measurement portion extending from the reference element towards the end. The device further includes a channel extending from at least one inlet in said reference portion to at least one outlet in said measurement portion, the channel being separated from the waveguide so as to provide a fluid flow independent of the waveguide, and a gas-pump arranged to create a gas flow in said channel from said at least one inlet to said at least one outlet. 1. A device for providing a gas composition and temperature compensated acoustic measurement of the level of a liquid surface in a tank , said device comprising:a transmitter adapted to transmit acoustic signals;a receiver adapted to receive reflections of said acoustic signals; a first end connected to the transmitter,', 'a second end adapted to extend into the liquid,', 'a reference element arranged in said waveguide;', 'a reference portion extending from said first end to said reference element; and', 'a measurement portion extending from said reference element towards said second end;', 'wherein:', 'a channel extending from at least one inlet in said reference portion to at least one outlet in said measurement portion, said channel being separated from the waveguide so as to provide a fluid flow independent of the waveguide, and, 'a waveguide for guiding acoustic signals from said transmitter to the liquid surface and for guiding reflections of said acoustic signals back to said receiver, the waveguide comprisinga gas-pump arranged to, during operation, create a gas flow in said channel from said at least one inlet to said at least one outlet.2. The device according to claim 1 , wherein at least part of said channel is arranged ...

Liquid Tank With An Ultrasonic Sensor

The present disclosure describes a tank comprising an ultrasonic sensor, a first cylindrical reflector, and a second cylindrical reflector. The ultrasonic sensor may be disposed on the floor of the tank for measuring the signal propagation time through a liquid located in the tank and comprise a transmitter/receiver. 1. A tank comprising:an ultrasonic sensor disposed on the floor of the tank for measuring the propagation time in a liquid located in the tank, comprising a transmitter/receiver, anda first cylindrical reflector and a second cylindrical reflector.2. The tank as claimed in claim 1 , wherein the two reflectors are arranged on a common plate composed of the same material as the reflectors.3. The tank as claimed in claim 1 , further comprising a mirror arranged in the ultrasonic wave path behind the two reflectors for deflecting sound.4. The tank as claimed in claim 1 , wherein the ultrasonic sensor also measures the concentration of the liquid in the tank.5. The tank as claimed in claim 1 , wherein the ultrasonic sensor also measures the filling level of the liquid.6. The tank as claimed in claim 1 , wherein the liquid comprises a urea solution.7. A sensor for measuring a characteristic of a liquid held in a tank claim 1 , the sensor comprising:an ultrasonic transmitter/receiver disposed on a floor of the tank, anda first cylindrical reflector and a second cylindrical reflector,wherein the ultrasonic transmitter emits a signal into the liquid and the ultrasonic receiver measures the propagation time of the signal through the liquid located in the tank.8. The sensor as claimed in claim 7 , wherein the two cylindrical reflectors are arranged on a common plate composed of the same material as the reflectors.9. The sensor as claimed in claim 7 , further comprising a mirror arranged in a path of the ultrasonic signal behind the two reflectors for deflecting sound.10. The sensor as claimed in claim 7 , wherein the ultrasonic sensor calculates the concentration ...

Ultrasonic Sensor Having A Deflecting Element

An ultrasonic sensor is disclosed for performing a propagation-time measurement in a liquid. The ultrasonic sensor includes an ultrasound transmitter and a deflecting element made of plastic, into which deflecting element the ultrasound pulses emitted by the ultrasound transmitter are conducted, which ultrasound pulses are deflected on a boundary surface within the deflecting element by reflection. A hermetically sealed air bag is arranged inside the deflecting element. A wall of the air bag forms the plastic/air boundary surface for reflecting the ultrasound pulses. The ultrasonic sensor may provide improved functional capability of the deflecting element over a long time period, while being economical to produce.

SYSTEM FOR MEASURING A PARAMETER OF A FLUID IN A TANK

The invention concerns a tank () of fluid () for a motor vehicle (), comprising a body () arranged to receive the fluid () and a system () for measuring a parameter of the fluid () in the tank () from an acoustic wave. According to the invention, the acoustic wave () is generated by another system (), the main function of which is not that of emitting an acoustic wave. 1. A tank , comprising a body arranged to receive the fluid and a system for measuring a parameter of the fluid in the tank from an acoustic wave , the measuring system comprising at least one acoustic sensor designed to capture an acoustic wave , called noise , generated by another system , the main function of which is not that of emitting an acoustic wave.2. The tank according to claim 1 , wherein the other system is a system for extracting fluid out of the tank.3. The tank according to claim 1 , wherein the measuring system comprises a device for detecting the concentration of the fluid comprising an acoustic reflection element mounted at a fixed distance in relation to the other system claim 1 , the acoustic sensor mounted between the reflection element and the other system in order to capture the acoustic waves generated by the other system and a calculation module arranged to determine the concentration of the fluid.4. The tank according to claim 3 , wherein the acoustic reflection element is formed by the body of the tank or a plate mounted in the tank.5. The tank according to claim 3 , wherein the calculation module comprises a means to determine claim 3 , based on the fixed distance claim 3 , the type of fluid and the time elapsed between the detections of each acoustic wave generated by the other system and its echo sent back by the reflection element claim 3 , the concentration of the fluid.6. The tank according to claim 1 , wherein the measuring system comprises a device for detecting the level of the fluid comprising the acoustic sensor mounted in the tank in order to capture the ...

APPARATUS FOR MEASURING RESIDUAL AMOUNT OF FUEL IN FUEL TANK USING ULTRASONIC SENSOR

Provided is an apparatus for measuring a residual amount of fuel in a fuel tank using an ultrasonic sensor that may simplify wirings, may simplify an assembly method, and may respond to contraction or expansion of the tank according to a change in temperature as compared to the conventional apparatus for measuring a residual amount of fuel in a fuel tank using an ultrasonic sensor. 1. An apparatus for measuring a residual amount of fuel in a fuel tank using an ultrasonic sensor , the apparatus comprising: a measurement pipe installed in the fuel tank so that the fuel is introduced into an internal space of the measurement pipe; a measurement sensor installed on an inner upper surface of the fuel tank to emit ultrasonic waves toward a liquid level of fuel accommodated in the internal space of the measurement pipe and to measure the time that the ultrasonic waves are reflected from the liquid level and returned; a fixed reflection plate installed above fuel accommodated in the fuel tank and having a fixed height to a lower surface of the fuel tank; a reference sensor installed above the fuel accommodated in the fuel tank to emit the ultrasonic waves toward the fixed reflection plate and to measure the time that the ultrasonic waves are reflected from the fixed reflection plate and returned; and a calculation unit calculating the residual amount of the fuel tank using the time measured by the measurement sensor , the time measured by the reference sensor , a height of the fixed reflection plate , and an area of a cross section of the fuel tank.2. The apparatus of claim 1 , wherein the fixed reflection plate is coupled to a member extending upwardly from the lower surface of the fuel tank claim 1 , or is coupled to the measurement pipe.3. The apparatus of claim 2 , wherein the fuel tank is formed of a synthetic resin claim 2 , and the member or the measurement pipe is formed of a material having a thermal expansion coefficient smaller than that of the synthetic resin ...

DEVICE WITH AERATION MITIGATION FOR IMPROVED MEASUREMENT OF FLUIDS

A housing assembly for a fluid sensor assembly includes a housing having a first and second sensing volumes. A fluid port attached to the housing has a porous membrane covering first and second fluid apertures. The first sensing volume included a vertically-oriented waveguide and is fluidly coupled to an exterior of the housing through the first fluid aperture, where the first aperture port has an area smaller than an area of a cross section of the waveguide. The second sensing volume is coupled to the exterior of the housing through the second fluid aperture, the second fluid aperture having an area larger than a cross section of the second sensing volume. While the first sensing volume and the second sensing volume are both in fluid communication with an exterior of the housing, the fluid port and porous membrane internally isolate the first sensing volume from the second sensing volume. 1. A housing assembly for a fluid sensor assembly , comprising:a housing having a first sensing volume and a second sensing volume;a fluid port attached to the housing and having at least a first fluid aperture and second fluid aperture;at least one porous membrane assembled between the fluid port and the housing, the at least one porous membrane covering the first and second fluid apertures;the first sensing volume comprising a vertically-oriented waveguide, the first sensor volume being fluidly coupled to an exterior of the housing through the first fluid aperture, the first aperture port having an area smaller than an area of a cross section of the waveguide; andthe second sensing volume being coupled to the exterior of the housing through the second fluid aperture, the second fluid aperture having an area larger than an area of a cross section of the second sensing volume;wherein the fluid port and porous membrane internally isolate the first sensing volume from the second sensing volume.2. The housing assembly of claim 1 , wherein the fluid port is planar.3. The housing ...

SENSOR DEVICE

A sensor device for detecting the fill level in a collection container includes an ultrasound transducer and is designed such that the sensor device, and thus the ultrasound transducer, can switch between an active operating mode and a power-saving mode. The sensor device and the ultrasound transducer arranged therein require less energy in the power-saving mode than in the operating mode. In the power-saving mode, the sensor device can be brought into the active operating mode using environmental signals and external trigger conditions, which can be configured specifically for a given collection container type. An activation device is provided, which is designed such that, based on an external signal, the activation device causes the sensor device to switch into the active operating mode, wherein the ultrasound transducer performs at least one measurement in the active operating mode. The sensor device has a low-power interface for wireless transfer of data. 210112. Sensor device according to claim 1 , wherein an energy generation device () for energy harvesting is provided claim 1 , wherein the sensor device () comprises a storage system () with which the energy obtained by means of energy harvesting can be stored.36. Sensor device according to claim 1 , wherein the activation device () is a time-recording system claim 1 , with which the ultrasound transducer can be switched to the active state at defined time intervals claim 1 , wherein the time-recording system is a radio clock or a real-time clock.4131515136. Sensor device according to claim 1 , wherein the control input () is connected with a control unit () claim 1 , wherein the control unit () can be brought into the active operating state after the control input () has received a signal from the activation device ().5111. Sensor device according to claim 1 , wherein the voltage regulator () has an energy monitoring unit claim 1 , with which the energy present in the sensor device () during power-saving mode ...