With Pressure And/or Temperature Compensation Patents (Class 73/708)
  • Patent number: 11110797
    Abstract: A gauge assembly according to this disclosure includes a dial a dial face defining a scale indicative of an operating parameter, a conduit containing a first fluid and a second fluid that are immiscible during normal operating conditions. The conduit arranged about a periphery of the scale, wherein a visible demarcation between the first fluid and the second fluid is movable to correspond with the current operating parameter indicated on the scale.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: September 7, 2021
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Diego Trujillo, Guillermo Figueroa, Cristina Gascón
  • Patent number: 11101089
    Abstract: A pressure element for monitoring a fluid being applied to the pressure element, wherein the pressure element is configured to close an electrical circuit, as a result of a change in pressure which the fluid exerts on the pressure element, independently of an absolute value of the pressure, where the fluid preferably flows through a pipeline.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 24, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventor: Stefan Klehr
  • Patent number: 11067462
    Abstract: A sensor includes: a pressure vessel filled with an enclosed liquid; a diaphragm that seals the pressure vessel; a sensor body contained in the pressure vessel; an electric wire comprising a wiring electrically connected to the sensor body; a fixture that fixes the electric wire to the pressure vessel; a first fillet at a joining portion between the electric wire and the fixture, wherein the first fillet contacts the enclosed liquid; and a second fillet at a joining portion between the fixture and the pressure vessel, wherein the second fillet contacts the enclosed liquid.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: July 20, 2021
    Inventors: Toru Hirayama, Yusaku Yoshida, Atsushi Yumoto, Tatsuhiko Miyauchi
  • Patent number: 11054329
    Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. A pressure sensor in a portable electronic device may include an integrated heater or may be co-operated with an external heater for the pressure sensor. The heater may be operated to heat some or all of the pressure sensor for pressure sensor testing, calibration, or temperature-controlled pressure sensing operations.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: July 6, 2021
    Assignee: Apple Inc.
    Inventors: David MacNeil, Gregory B. Arndt, Roberto M. Ribeiro, William E. Mickelson, Richard Yeh
  • Patent number: 10948372
    Abstract: A pressure sensing module for an electronic device includes a substrate and a module housing coupled to the substrate. The module housing defines a first chamber and a second chamber. The second chamber is separate from the first chamber. The first chamber is configured to connect to an environment around an electronic device. The second chamber is configured to connect to an internal volume of the housing of the electronic device. A first pressure sensing element is electrically coupled to the substrate and disposed in the first chamber and is operative to detect an external pressure around the electronic device. A second pressure sensing element is electrically coupled to the substrate and disposed in the second chamber and is operative to detect an internal pressure within the electronic device housing.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Gregory B. Arndt, Krishna Prasad Vummidi Murali
  • Patent number: 10935451
    Abstract: In accordance with an embodiment, a sensor arrangement includes a pressure transducer configured to be in fluid connection with a volume region having a fluid, where the pressure transducer is configured to output a pressure signal in response to a pressure change in the volume region, the pressure signal comprising a signal curve that depends on the pressure change; a heating element configured to provide a defined temperature change of the fluid situated in the volume region, wherein the defined temperature change of the fluid brings about a corresponding pressure change in the volume region; and a processing device configured to ascertain a current functional parameter of the pressure transducer based on the signal curve of the pressure signal obtained in the volume region due to the defined temperature change provided by the heating element.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: March 2, 2021
    Inventor: David Tumpold
  • Patent number: 10876916
    Abstract: A sensor element that has high measurement precision by providing a resistance-change length ratio corresponding to a direction-specific extension length is provided. The sensor element includes an element body disposed in a sensor body to measure a temperature and a pressure and having a diaphragm deformed based on the temperature or the pressure. Additionally, the sensor element includes pressure-measuring resistors including a second resistor portion and a fourth resistor portion disposed along a diametric direction with respect to a center of an upper surface of the diaphragm and in an extension section on the upper surface of the diaphragm and a first resistor portion and including a third resistor portion disposed outside the second resistor portion or the fourth resistor portion in a compression section on the upper surface of the diaphragm to eliminate a resistance change caused by a pressure-specific temperature change.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 29, 2020
    Inventor: Chi Yeon Kim
  • Patent number: 10823630
    Abstract: We present a microelectromechanical system (MEMS) graphene-based pressure sensor realized by transferring a large area, few-layered graphene on a suspended silicon nitride thin membrane perforated by a periodic array of micro-through-holes. Each through-hole is covered by a circular drum-like graphene layer, namely a graphene “microdrum”. The uniqueness of the sensor design is the fact that introducing the through-hole arrays into the supporting nitride membrane allows generating an increased strain in the graphene membrane over the through-hole array by local deformations of the holes under an applied differential pressure. Further reasons contributing to the increased strain in the devised sensitive membrane include larger deflection of the membrane than that of its imperforated counterpart membrane, and direct bulging of the graphene microdrum under an applied pressure. Electromechanical measurements show a gauge factor of 4.4 for the graphene membrane and a sensitivity of 2.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: November 3, 2020
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Liang Dong, Qiugu Wang, Wei Hong
  • Patent number: 10807858
    Abstract: A device transmits a movement and a force between a first zone and a second zone which are insulated from one another in a sealed manner. The device includes a planar support, a transmission element that is rotatably movable with respect to the support by a pivot joint having an axis of rotation that is parallel to a plane of the support, an opening in the support through which the transmission element passes and level with which the pivot joint is positioned. The transmission element includes at least one first transmission arm on one side of the plane of the support and one second transmission arm on the other side of the plane of the support, and sealed insulation positioned in the opening, such that it insulates the first zone from the second zone in a sealed manner and allows the rotational movement of the transmission element.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: October 20, 2020
    Inventor: Loic Joet
  • Patent number: 10795390
    Abstract: A circuit for providing temperature compensation to a sense signal having a first temperature coefficient includes a temperature compensation circuit receiving a temperature sense signal indicative of a temperature associated with the sense signal where the temperature compensation circuit is digitally configurable by at least one digital signal to generate a compensating impedance signal having a second temperature coefficient. The compensating impedance signal provides an impedance value in response to the temperature sense signal. The compensating impedance signal is applied to modify the sense signal to provide a modified sense signal having substantially zero temperature coefficient over a first frequency range. The circuit further includes an amplifier circuit receiving the modified sense signal and generating an output signal indicative of the sense signal where the output signal has substantially zero temperature coefficient over the first frequency range.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: October 6, 2020
    Assignee: Alpha and Omega Semiconductor (Cayman) Ltd.
    Inventors: Rhys Philbrick, Steven P. Laur, Nicholas Archibald
  • Patent number: 10768068
    Abstract: A pressure scanner assembly having at least one replaceable sensor plate, wherein each of the replaceable sensor plates has at least one pressure sensor adapted to transmit a signal substantially indicative of a sensed pressure condition. A memory chip, which stores correction coefficients for each of the pressure sensor to compensate for thermal errors, may be installed on each of the replaceable sensor plates. The signals from the pressure sensors are multiplexed and may be outputted in analog or digital form. The pressure scanner assemblies described herein have sensor plates that can be interchanged with other sensor plates of the same or different pressure range without disrupting the electronic configuration of the pressure scanner assembly or having to recalibrate and/or update the memory chip installed thereon.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 8, 2020
    Assignee: Kulite Semiconductor Products, Inc.
    Inventors: Richard Martin, Louis DeRosa, Joseph R. VanDeWeert
  • Patent number: 10704969
    Abstract: A stress sensor is provided, including a substrate and a bridge circuit disposed thereon. The bridge circuit is coupled between an output node and a ground node. The bridge circuit includes a first branch and a second branch, the first having a first resistor, R1, having a first orientation and coupled to a tuning resistor, Rtune, at a first intermediate node. The second branch includes a second resistor, R2, having a second orientation that is different from the first orientation, and coupled to a variable resistor, Rvar, at a second intermediate node. The bridge circuit includes an amplifier having a positive input terminal coupled to the second intermediate node, and a negative input terminal coupled to the first intermediate node. The amplifier generates a voltage output at the output node as a function of mechanical stress applied to the substrate. Rvar is non-linearly tunable based on the voltage output.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 7, 2020
    Inventor: Alfio Zanchi
  • Patent number: 10684184
    Abstract: A pressure sensor assembly having a printed circuit board (PCB) with a pressure sensor mounted on the PCB, a side wall engaging the PCB, a membrane, a cavity defined by the membrane, the side wall and the PCB, and a gel or liquid filling the cavity. The pressure sensor assembly may include a fill-hole extending into the cavity through which the cavity may be filled with the gel or liquid. The fill-hole may extend through one or both of the PCB and/or the side wall. The cavity is defined in part by a septum that allows a needle to pierce the septum for filling the cavity with the gel or liquid. A method of forming the pressure sensor assembly may include filling a cavity of the pressure sensor assembly with a gel or liquid through a fill-hole and curing the gel or liquid once in the cavity.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: June 16, 2020
    Inventors: Richard Wade, Jason D. Patch
  • Patent number: 10680608
    Abstract: A multiplexer comprises: a first switch; a second switch; a dummy component coupled to the first switch and the second switch and configured to: reduce a first charge injection of the first switch, and reduce a second charge injection of the second switch; and an output coupled to the first switch, the second switch, and the dummy component. A method comprises: providing an output from either a first switch or a second switch; coupling, by a dummy component, to the first switch and the second switch; using a BBM action; and reducing, by the dummy component, a first charge injection of the first switch or a second charge injection of the second switch.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: June 9, 2020
    Inventors: Priyank Anand, Anand Kannan, Venkatesh Guduri
  • Patent number: 10670482
    Abstract: A sensor element for a pressure sensor, includes a sensor membrane on which a defined number of piezoresistors are situated, the piezoresistors being configured in a circuit in such a way that, when there is a change in pressure an electrical change in voltage can be generated; at least two temperature measuring elements configured in relation to the sensor membrane in such a way that temperatures of the sensor membrane at positions of the piezoresistors can be measured using the temperature measuring elements, an electrical voltage present at the circuit of the piezoresistors due to a temperature gradient being capable of being compensated computationally using the measured temperatures.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 2, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Zehringer, Zoltan Lestyan, Richard Fix, Jochen Franz, Michaela Mitschke, Tobias Sebastian Frey
  • Patent number: 10605821
    Abstract: A speed sensor of a rotatable output element of a transmission comprises a rotating tone wheel (33) and an inductive pick-up (29) comprising one of a drain plug, a fill plug or a level plug. The arrangement is suitable for providing a vehicle speed signal to a vehicle tachograph.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: March 31, 2020
    Inventor: Stuart Tavener
  • Patent number: 10551269
    Abstract: Disclosed is a sensor for measuring the pressure prevailing in a motor vehicle cylinder head, the sensor including a tubular body and an element sensitive to variations in the pressure, mounted in the tubular body. The sensitive element includes a tether including a fixing portion for fixing the tether to the tubular body, a tubular portion and a membrane fixed to the tubular portion at a connecting zone. The sensor is notable in that the connecting zone and the fixing zone are separated by a non-zero distance along the longitudinal axis and in that the tether includes, between the connecting zone and the fixing portion, a portion for absorbing a mechanical deformation.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: February 4, 2020
    Inventors: Matthieu Joly, Cyrille Patri
  • Patent number: 10495496
    Abstract: Systems and methods for measuring a flow rate through a nozzle include generating a first polynomial relationship between pressure and output voltage for a first pressure transducer located at one end of the nozzle and generating a second polynomial relationship between pressure and output voltage for a second pressure transducer located at another end of the nozzle. When a first voltage signal is received from the first pressure transducer and a second voltage signal from the second pressure transducer, the associated first and second pressures are generated based on the first and second polynomial relationships. A flow rate through the nozzle is then constructed based on the difference between the first pressure and the second pressure.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: December 3, 2019
    Assignee: Hydro Flow Products, Inc.
    Inventor: Marcial S. Villaverde
  • Patent number: 10488290
    Abstract: A sensor unit including a measuring cell with a section-wise heat-conducting surface, a housing in which the measuring cell for the most part is contained, and an access channel to the measuring cell. The sensor unit includes a cavity that is confined for the most part by an outer surface of the measuring cell and by a wall of the housing facing towards the surface of the measuring cell. The cavity is closed in itself.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: November 26, 2019
    Assignee: INFICON GMBH
    Inventors: Hansjakob Hanselmann-Willi, Francesco Scuderi
  • Patent number: 10385754
    Abstract: An internal combustion engine fluidly coupled to an exhaust aftertreatment system that includes an exhaust purifying device is described. A pressure monitoring device is disposed to monitor a pressure differential between an inlet and an outlet of the exhaust purifying device. A method of monitoring the exhaust purifying device includes monitoring a pressure differential between an inlet and an outlet thereof, and determining an exhaust gas flowrate associated with operation of the internal combustion engine. A raw flow resistance is dynamically determined based upon the pressure differential and the exhaust gas flowrate, and an estimated flow resistance is determined based upon the raw flow resistance. The exhaust purifying device is evaluated based upon the estimated flow resistance.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: August 20, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Raffaele Esposito, Alberto Giordano
  • Patent number: 10317299
    Abstract: A pressure sensor comprising at least a pressure measuring cell, a pressure balancer, as well as at least one measurement line to transfer a pressure applied to the pressure means to the pressure measuring cell, wherein the pressure sensor comprises at least one compensation line showing the same features as the measurement line, which is arranged parallel in reference to the measurement line.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: June 11, 2019
    Assignee: VEGA Grieshaber KG
    Inventor: Clemens Hengstler
  • Patent number: 10288511
    Abstract: The invention is a method for determining an output value, which is equivalent to a pressure or a value proportional to the pressure, comprising a relative pressure sensor with at least one measured capacity formed between a basic body and a measuring membrane and at least one reference capacity formed between the basic body and the measuring membrane, with the determination of the output value comprising at least the following steps: (1) determining the measured capacity, (2) determining the reference capacity, (3) comparing a value of a first function FZ of the reference capacity to the measured capacity and (4) issuing A=FQ(CM,CR) for CM=FZ(CR) A=FCR(CR) for CM>FZ(CR) A=FCM(CM) for CM<FZ(CR) as the output value.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: May 14, 2019
    Inventors: Bernhard Weller, Johannes Seiffe
  • Patent number: 10288515
    Abstract: A pressure difference sensor with at least one pressure difference measuring cell, at least a first pressure means, and at least a first measurement line for transferring a first pressure applied upon the first pressure means to a first side of the pressure difference measuring cell, characterized in that the pressure difference sensor comprises at least a first compensation line, which is arranged parallel to the first measurement line and is connected to a second side of the pressure difference measuring cell.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: May 14, 2019
    Inventor: Clemens Hengstler
  • Patent number: 10288513
    Abstract: A combined pressure and temperature sensing device includes a sensor port geometry that provides improved contact between a fluid media being measured and a thermistor cavity of the sensor port. The increased contact area provides improved response time and accuracy compared to previously known integrated pressure-temperature sensors. A temperature sensor element is offset from a pressure sensor element relative to a central axis of the temperature-pressure sensor body/package to facilitate substantially increasing a pressures sensor cavity volume without increasing the overall sensor port diameter. A wire-bondable thermistor support portion facilitates high volume automated production line. The temperature sensing element may be resistance welded to the thermistor support portion in a parallel manufacturing process.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 14, 2019
    Assignee: Sensata Technologies
    Inventors: Jun H. Bae, Nikhil B. Lal, Guanshi Li, Shuo Robert Chen, Mark W. McBrine
  • Patent number: 10288527
    Abstract: A pressure sensing apparatus is provided for sensing gas pressure at a pressure tapping. The apparatus has a pressure sensor which provides a pressure measurement signal in response to the pressure of a gas admitted into the sensor at a gas inlet port thereof. The apparatus further has a gas conduit which extends from the inlet port. An end of the conduit distal from the inlet port is adapted to receive the gas at the pressure tapping. The apparatus further has a condenser on the gas conduit. The condenser contains condensation surfaces on which humidity in the gas flowing from the pressure tapping to the inlet port condenses out. In operation the temperature at the condenser is lower than at the pressure tapping.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: May 14, 2019
    Assignee: ROLLS-ROYCE PLC
    Inventor: Stuart James Kirby
  • Patent number: 10247615
    Abstract: A sensor assembly is provided that allows for a more rapid sensing of thermal changes. In preferred embodiments, the sensor assembly includes a housing, sensor package, bushing, coupling and gasket. The bushing is made from a conductive material like copper or silver and provides a conductive path from the bottom of the sensor package directly into the medium whose temperature is to be sensed or close thereto. A coupling is provided between the conductive bushing the metal housing to prevent heat exchange between the metal housing and the bushing. The gasket is placed in compression and provides a constant force holding the conductive bushing against the bottom of the sensor package.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: April 2, 2019
    Assignee: DUNAN SENSING, LLC
    Inventors: Claudio Martinez, Danny (Duy) Do
  • Patent number: 10240993
    Abstract: A pressure sensor for recording a pressure of a fluid medium in a measuring cell. The pressure sensor includes a sensor housing, at least one first pressure sensor element for measuring a pressure of the medium, and a drive and/or evaluation circuit for outputting a signal indicative of a pressure acting on the first pressure sensor element. The drive and/or evaluation circuit is configured on or in a circuit substrate disposed within the sensor housing. The first pressure sensor element is configured on or in the circuit substrate and is separated from the fluid medium by at least one first separating membrane.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: March 26, 2019
    Inventors: Alexander Lux, Patrik Patzner
  • Patent number: 10215655
    Abstract: A pressure sensor assembly having a sensor unit, a pressure port, and an electrical connector. The sensor unit may include a printed circuit board (PCB), a pressure sensor, a support, and a media isolation layer. The PCB may have a first side and an opposite second side, where the pressure sensor may be secured to the first side. The support may also be secured to the first side of the PCB and may circumferentially surround the pressure sensor and/or may define a media sensing opening. The media isolation layer (e.g., a gel or other material) may be provided in the media sensing opening and encase the pressure sensor, where the media isolation layer may transfer a pressure provided by the media in the pressure port to the pressure sensor and may act as a barrier between the media and the pressure sensor.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: February 26, 2019
    Assignee: Honeywell International Inc.
    Inventors: Todd Eckhardt, Lamar Floyd Ricks
  • Patent number: 10184910
    Abstract: A sensor device package includes a pressure sensor and a humidity sensor mounted on the same substrate and in the same housing with light protection for the pressure sensor a media opening for gas exchange for the humidity sensor. Light protection and rapid response times are provided through strategic positioning of the media opening, strategic arrangement of the pressure sensor, humidity sensor, and the media opening, and/or the use of opaque materials.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: January 22, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Gerhard Lammel, Sibylle Waffenschmidt, Ando Feyh, Gary O'Brien, Andrew Graham
  • Patent number: 10184855
    Abstract: Disclosed is a pressure detecting device having a temperature sensor, the device including: a housing having a first chamber, a second chamber, and a port part having a fluid guide tube that guides a pressure transmitting fluid to the second chamber; a lead frame coupled to the housing and configured for being connected to an external device; a circuit substrate electrically connected to the lead frame and including a first surface and a second surface; a pressure detecting element provided on the second surface of the circuit substrate and generating an electrical signal according to a pressure change; a tube coupled to the port part, whereby a first end of the tube is open and provided inside the first chamber; and a temperature detecting element provided inside the tube and transmitting an electrical signal generated according to a temperature change to the circuit substrate.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 22, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Comet Network Co., Ltd.
    Inventors: Min Kyu Lee, Gi Young Nam, Dong Kyun Seo, Hwan Park, Sun Woo Choi, Sang Joo Kim, Jung Min Kim
  • Patent number: 10175137
    Abstract: A pressure measurement device has: a first chamber coupled to at least one fluid utilization unit, a second chamber coupled to a vacuum source, a seat with a passage for the fluid between the first and the second chamber, a plug for allowing or blocking the fluid flow through the passage, a retaining member for retaining the plug against the seat, a pressure sensor, and a measurement cavity coupled to the first chamber. The retaining member has a channel arranged to couple the first chamber and the measurement cavity.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: January 8, 2019
    Assignee: AKWEL SA
    Inventor: Marco Martino Spanevello
  • Patent number: 10161821
    Abstract: A pressure change measuring unit causes a temperature control unit to operate and vary the temperature of a sensor chip in a predetermined temperature range, and measures changes in pressure value output from the sensor chip whose temperature is being varied. A temperature characteristic calculating unit calculates a temperature characteristic of the sensor chip from changes in the temperature of the sensor chip caused by the operation of the temperature control unit and changes in pressure value measured by the pressure change measuring unit.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 25, 2018
    Inventors: Takuya Ishihara, Masaru Soeda, Masashi Sekine, Hidenobu Tochigi
  • Patent number: 10119888
    Abstract: A temperature sensor integrated type semiconductor pressure sensor apparatus includes a temperature detection device, a lead wire covered with a lead wire protection material, and a terminal, which are integrated together by a thermoplastic resin. This can prevent the lead wire from being deformed in the assembly process, thereby simplifying the assembly process. Furthermore, the temperature detection device is exposed from the opening at the tip of the protrusion, which can secure enough temperature response. Furthermore, the temperature detection device, the lead wire and the lead wire protection material are covered with the thermoplastic resin, so they are protected from combustion gas component, oil contaminant and corrosion product included in intake air.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: November 6, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hiroyuki Kishimoto
  • Patent number: 10094725
    Abstract: A production method for a detection apparatus includes: forming at least one sensitive region having at least one exposed sensing area on and/or in a semiconductor substrate, encapsulating at least one part of the semiconductor substrate so that the at least one sensing area is sealed in an air-, liquid- and/or particle-tight fashion from an external environment, and forming at least one opening so that at least one air, liquid and/or particle access from the external environment to the at least one sensing area is created, wherein before forming the at least one opening, at least one first test and/or calibration measurement is performed, for which at least one sensor signal of the at least one sensitive region having the at least one sensing area sealed in an air-, liquid- and/or particle-tight fashion is determined as at least one first test and/or calibration signal. Also described are related detection apparatuses.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: October 9, 2018
    Inventors: Jochen Reinmuth, Timo Lindemann
  • Patent number: 10063195
    Abstract: An amplifier circuit includes a converter configured to convert a predefined physical quantity to a resistance value, and the resistance value converted by the converter is converted to a voltage value and then amplified. The converter includes variable resistance sensors of piezoresistance elements. A bias unit is configured to determine a bias current of the converter, and includes bias resistances. An operation amplifier unit receives, as input signals, output signals from the bias unit and the converter, and includes feedback resistances respectively connected to input and output ends of a first operational amplifier. The first operational amplifier is a whole differential operational amplifier including a common-mode feedback circuit.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: August 28, 2018
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Tomohiko Ogawa, Yoshihiko Koizumi
  • Patent number: 10048122
    Abstract: A pyranometer, comprises a thermal sensor, and a diffusing member positioned so as to be opposed to a receiving surface of the thermal sensor.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: August 14, 2018
    Inventors: Toshikazu Hasegawa, Akihito Akiyama, Naoto Shimada
  • Patent number: 10001424
    Abstract: A physical quantity detector includes: a bridge circuit portion that includes a bridge circuit including a first, second, third, and fourth strain gauges each having a resistance value that changes in response to an application of a physical quantity and to temperature, the bridge circuit portion outputting, as a first detection signal, a first voltage, and outputting, as a second detection signal, a second voltage; a temperature characteristic adjustment portion that is connected in parallel to the bridge circuit portion, and outputs, as a third detection signal, a third voltage corresponding to the input voltage; a first signal processing circuit portion that receives the first and second detection signals, and outputs a first differential voltage; and a second signal processing circuit portion that receives the second and third detection signals, and outputs a second differential voltage.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: June 19, 2018
    Inventors: Naoki Hasegawa, Kazuyuki Oono
  • Patent number: 9989432
    Abstract: An impedance sensor and an electronic apparatus using the same are provided. The impedance sensor includes an impedance-bridge circuit, a compensation circuit, and a signal processing circuit. The impedance-bridge circuit has an input side and an output side, and configured to generate a first impedance variation in response to a physical pressure. The compensation circuit is coupled to the input side of the impedance-bridge circuit in parallel, and configured to generate a second impedance variation in response to an environment temperature. The signal processing circuit respectively detects the first and the second impedance variations, and accordingly generates a first sensing signal indicating the first impedance variation and a second sensing signal indicating the second impedance variation, so as to compensate a temperature shift part of the first sensing signal by the second sensing signal and accordingly generate a pressure detection signal.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: June 5, 2018
    Assignees: PROLIFIC TECHNOLOGY INC., UniSense Technology Co., Ltd
    Inventors: Chiung-An Chen, Yun-Kuo Lee, Chih-Yuan Hung, Jia-Chun Huang, Yeow-Chin Chen, Shu-Fan Wu
  • Patent number: 9958337
    Abstract: A protective tube device can protect a temperature sensor against contact with a fluid, and has a distal end containing the temperature sensor and has an outer wall provided for contact with the fluid, and a proximal end which is connected to the temperature sensor by electric lines and is intended for arrangement outside the fluid, wherein, on the outer wall of the distal end, an elastic membrane closes off a resultantly defined pressure transmission fluid reservoir in a fluid-impermeable manner, the pressure transmission fluid reservoir being connected fluidically by a fluid channel running within the protective tube device to a pressure sensor arranged in the proximal end.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: May 1, 2018
    Assignee: ABB Schweiz AG
    Inventors: Guruprasad Sosale, Andrea Pozzi, Paul Szasz, Thomas Scholl, Wilhelm Daake
  • Patent number: 9784632
    Abstract: Sensor signal detection device includes: a sensor element; a temperature detection element connected in series with the sensor element; a constant voltage power supply applying constant voltage to a series circuit of the temperature detection element and the sensor element; a short-circuit switch short-circuiting both terminals of the temperature detection element; and a controller controlling a changeover between a sensor detection state and a temperature detection state. In the sensor detection state, a sensor signal from the sensor element is obtained by turning on the short-circuit switch to apply the constant voltage across both terminals of the sensor element from the constant voltage power supply. In the temperature detection state, a temperature detection signal of the temperature detection element is obtained by turning off the short-circuit switch to connect the temperature detection element to the sensor element in series and applying constant voltage from the constant voltage power supply.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: October 10, 2017
    Inventor: Toru Hirayama
  • Patent number: 9752404
    Abstract: A pressure compensator for a subsea device is provided. The pressure compensator provides pressure balancing between a chamber of the subsea device and the surrounding environment when the subsea device is installed at a subsea location. The pressure compensator includes an intermediate compensation chamber that is provided by a compensator enclosure. The compensator enclosure is sealed against the subsea environment. The compensator enclosure includes a bellows portion that is deformable to change the volume of the intermediate compensation chamber. The pressure compensator further includes a flexible hose disposed inside the intermediate compensation chamber. A volume inside the flexible hose provides a main compensation chamber.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: September 5, 2017
    Inventor: Fredrik Gundersen Aarskog
  • Patent number: 9638598
    Abstract: The invention relates to a capacitive pressure transducer for measuring the pressure of a medium adjacent to the pressure transducer, which has a resilient measuring diaphragm, of which the first side is at least partially in contact with the medium and of which the second side, which faces away from the medium, comprises a measuring electrode and, for measuring a temperature, a resistance element made of a material having a temperature dependent resistance. Furthermore, the pressure transducer has a base body, which is arranged to oppose the second side of the measuring diaphragm, with a counter electrode, which forms a measuring capacitance with the measuring electrode. According to the invention, the resistance element is formed as a resistive layer disposed between the second side of the measuring diaphragm and the measuring electrode.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 2, 2017
    Inventors: Josef Fehrenbach, Jörn Jacob
  • Patent number: 9568385
    Abstract: A semiconductor pressure sensor (720) includes a thin film piezoelectric element (701) which applies strain to a portion of a semiconductor substrate that corresponds to a thin region (402). The thin film piezoelectric element (701) is formed at a distance away from diffusion resistors (406, 408, 410, and 412) functioning as strain gauges and is extended to the proximity of a bonding pad (716A) connected to an upper electrode layer of the thin film piezoelectric element and a bonding pad (716F) connected to a lower electrode thereof. The diffusion resistors (406, 408, 410, and 412) constitute a bridge circuit by metal wiring (722) and diffusion wiring (724). During self-diagnosis, a prescribed voltage is applied to a thin film piezoelectric element (701). If the output difference of the bridge circuit between before and after the voltage application falls outside a prescribed range, it is determined that a breakage occurs in the semiconductor pressure sensor (720).
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: February 14, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Nobuyuki Yamada, Masahiro Sakuragi, Takeshi Yoshida, Kei Hayashi
  • Patent number: 9534976
    Abstract: A pressure sensor includes a sensor housing mounted on a vehicle, a first detector located in the housing and having a first diaphragm facing a sealed space of the vehicle, a second detector located in the housing and having a second diaphragm facing the sealed space, and a protector located in the housing and covering the first and second detectors. A first chamber is formed between the first diaphragm and the housing and isolated from the sealed space so that the first diaphragm can be deformed by a pressure in the sealed space. A second chamber is formed between the second diaphragm and the sensor housing and communicates with the sealed space. The first and second diaphragms produce the same signal when being deformed by the same amount in the same direction.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 3, 2017
    Inventors: Masatada Yoshida, Makoto Sakai
  • Patent number: 9486579
    Abstract: A pressure sensor for use with a fluid delivery system having good sensitivity at low pressure, but also configured to remain in operating condition after being exposed to high pressures is disclosed herein. In one variation, the pressure sensor includes a fluid path set, a deformable element associated with the fluid path set and configured to deform in response to an external pressure, and a pressure transducer for monitoring deformation of the deformable element. In certain embodiments, the pressure sensor is configured to measure fluid pressure within the range of between about 0 mm Hg to about 300 mm Hg. However, the sensor pressure is also be configured to remain functional after being exposed to pressure in excess of about 60,000 mm Hg.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 8, 2016
    Assignee: Bayer HealthCare LLC
    Inventors: Michael A Riley, Michael A Spohn, Gerald W Callan, Michael J Swantner, Russell M Evans, III
  • Patent number: 9448055
    Abstract: Aspects of the present disclosure relate to a method that includes receiving, at first and second input terminals, first and second input voltages and maintaining the direction of the first and second input voltages and doubling the first and second input voltages. The method also includes measuring, by a Wheatstone bridge, an applied physical parameter; outputting, to a capacitor, and to first and second operational amplifiers, first and second signals substantially indicative of the physical parameter; reducing, by the capacitor, a DC component of the first and second signals; amplifying, by the first and second operational amplifiers, the first and second signals; and adjusting, by a gain resistor, a differential output between first and second output voltages that correspond to the first and second signals output from the Wheatstone bridge. Finally, the method includes outputting, by first and second output terminals, the first and second output voltages.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 20, 2016
    Assignee: Kulite Semiconductor Products, Inc.
    Inventor: Wolf Landmann
  • Patent number: 9341499
    Abstract: Disclosed is a method for adjusting a sensor signal and a corresponding sensor system comprising a sensor for providing a sensor signal representative of a measure other than temperature, dynamic components of the sensor signal being dependent on temperature. In addition there is provided a temperature sensor for measuring the temperature. Dynamic components in the sensor signal are adjusted subject to the temperature sensed, and a compensated sensor signal is supplied. Such sensor system helps compensating for long response times of sensors.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: May 17, 2016
    Assignee: Sensirion AG
    Inventors: Markus Graf, Vincent Hess, Dominik Niederberger
  • Patent number: 9316557
    Abstract: A method for monitoring the operation of a pressure measuring cell (10) of a capacitive pressure sensor (1), wherein the pressure measuring cell (10) has a measuring capacitor (CM) and a reference capacitor (CR) and the pressure measuring value (p) is obtained from the capacity values of the measuring capacitor (CM) and the reference capacitor (CR), characterized in that a control pressure measuring value (p?) is obtained with an auxiliary capacitor (CZ) arranged outside the pressure measuring cell (10) and the operability of the pressure measuring cell (10) is inferred by comparing the pressure measuring value (p) to the control pressure measuring value (p?) is provided.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 19, 2016
    Inventor: Heinz Walter
  • Patent number: 9283319
    Abstract: Cannula assemblies with pressure sensors made of stacked coplanar layers and ambulatory infusion systems comprising the same are disclosed. The cannula assemblies include a hub and an infusion cannula. The hub includes a pressure sensor and a fluid channel fluidly coupled to the infusion cannula. The pressure sensor is formed from a stack of coplanar layers including a top layer, a base layer an electrode layer and a counter electrode layer. The fluid channel is positioned between the top layer and the base layer. The electrode layer is positioned between the top layer and the base layer and coupled to the fluid channel. The counter-electrode layer is positioned between the top layer and the electrode layer. A spacer layer having a through cut-out defining an electrode cavity is disposed between the top layer and the base layer such that the electrode layer extends across the electrode cavity.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 15, 2016
    Inventors: Andreas Geipel, Florian Kuhni, Christoph Huwiler, Ulrich Haueter
  • Patent number: 9267859
    Abstract: The invention relates to a measuring apparatus for measuring a measurement variable of a fluid, particularly a sensor, such as a pressure sensor or a displacement sensor. The measuring apparatus comprises a housing, a diaphragm arranged in and/or on the housing, and a resilient element formed in the manner of a leaf spring for restoring the diaphragm. A signal transmitter is operatively connected to the diaphragm and/or the resilient element, and a signal receiver cooperates with the signal transmitter. The resilient element is fastened on the housing at the edge of the resilient element, more specifically in particular only at parts of the edge.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: February 23, 2016
    Assignee: Marquardt Mechatronik GmbH
    Inventors: Dietmar Weisser, Markus Scheiter