Fluid Pressure Patents (Class 73/1.57)
  • Patent number: 10489521
    Abstract: A simulation engine performs a mass-conserving Eulerian fluid simulation by manipulating the distribution of density between nodes associated with the fluid simulation. The simulation engine traces a velocity field upstream to identify the source of mass that currently resides at a given node. The simulation engine then adjusts (i) the density contributions to that source from adjacent nodes and (ii) the density contributions provided by that source to the given node. In doing so, the simulation engine maintains conservation of mass at a local level between nodes within a given neighborhood. As a result, mass is conserved at a global level. One advantage of the disclosed technique is that a fluid interface associated with the fluid simulation may appear physically realistic, because numerical errors typically caused by violations of conservation of mass may be eliminated.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: November 26, 2019
    Assignee: NVIDIA CORPORATION
    Inventors: Nuttapong Chentanez, Matthias Muller-Fischer
  • Patent number: 10288517
    Abstract: Apparatus and calibration methods are disclosed for measuring the permeability and/or porosity of ultra-low permeable rock samples. The apparatus uses a gas source, a sample chamber, chambers of calibrated volume, and pressure measurement devices.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: May 14, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Terizhandur S. Ramakrishnan, Michael Supp
  • Patent number: 10161341
    Abstract: A system and method is disclosed for diagnosing a malfunctioning of a pressure sensor in an aftertreatment system of an internal combustion engine. A first value of a differential pressure across the particulate filter is measured during the identified fuel cut-off state of the internal combustion engine. An exhaust back pressure valve of the aftertreatment system is operated toward a predetermined closed position thereof, and a second value of a differential pressure across the particulate filter is measured. A difference between the second value and the first value is calculated, and a malfunctioning of the differential pressure sensor is identified when the calculated difference is higher than a predetermined threshold value thereof.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: December 25, 2018
    Inventors: Cristian Taibi, Francesco Siano
  • Patent number: 10094688
    Abstract: A calibration system has a calibration device which includes at least one calibration fluid receptacle, an electric and a fluidic interface for releasably connecting at least one sensor module to be calibrated, which is a unit constructionally separate from the calibration device and contains one or more sensors, and a controller which controls the flow of calibration fluid through the sensor module connected to the calibration device and which is electrically coupled with the connected sensor module via the electric interface and can collect measurement data from the sensor module. In the calibration system, in particular in the sensor module, calibration data are stored, so that the calibration device can calibrate various sensor modules which are coupled to the interface.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 9, 2018
    Assignee: Buerkert Werke GmbH
    Inventors: Thomas Hahn, Vinoth Pathmanathan, Florian Fischer
  • Patent number: 10096853
    Abstract: Disclosed is a method of detecting an abnormality in a first pressure sensor or a second pressure sensor of a fuel cell system including the upstream-side first pressure sensor and the downstream-side second pressure sensor provided in a fuel supply flow passage configured to connect a fuel cell and a fuel supply source, a pressure reducing valve, a first shutoff valve, and a second shutoff valve. The first shutoff valve is closed to shut off supply of fuel from the fuel supply source. a pressure on an upstream side and a pressure on a downstream side of the pressure reducing valve is decreased to be equal to or less than a pressure regulation lower limit value. The second shutoff valve is closed and detection pressure values of the first pressure sensor and the second pressure sensor are compared with each other.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: October 9, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiromu Saito
  • Patent number: 10073930
    Abstract: Disclosed is a computerized process and system for modeling aeraulic flows in an environment in particular for the evaluation of the risks of airborne contamination. The principle of the process consists in considering that in a given individual unit or mesh, defined as fairly small, the final values of the primitive variables (V, P, T) are the result of their primary values calculated in an irrotational field composed of a “pressure-velocity” coupling with a turbulence model adapted to Newtonian and incompressible fluids belonging to the range of validity of the process.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: September 11, 2018
    Assignee: HYGIE-TECH SA
    Inventors: Philippe Le Goff, Catherine Hugel-Le Goff
  • Patent number: 10046609
    Abstract: A writer for a tire pressure sensor is disclosed, which is adapted to hold the tire pressure sensor to write a program to the tire pressure sensor. The tire pressure sensor has a first connection port. The writer includes a housing, a positioning member, and an ejection device. A surface of the housing forms a receiving recess, and a second connection port is provided in the receiving recess. When the tire pressure sensor is received in the receiving recess, the first connection port thereof is connected to the second connection port. The positioning member connected to the housing has a block section abutting against the tire pressure sensor to keep the first connection port being connected to the second connection port. The ejection device is adapted to exert a pushing force on the tire pressure sensor to eject it for separating the second connection port from the first connection port.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: August 14, 2018
    Assignee: MOBILETRON ELECTRONICS CO., LTD.
    Inventors: Ming-Hung Hsu, Chia-Chang Wu
  • Patent number: 9775527
    Abstract: Disclosed is an apparatus, system, and method for utilizing a pressure transducer simulator that is configured for use with a pressure sensor device and a patient monitoring device. The pressure transducer simulator may be configured to generate a simulation of the output of an analog pressure sensing device to be compatible with the patient monitoring device. The simulation may be based upon a pressure signal received from the pressure sensor device. In one embodiment, the pressure transducer simulator includes a digital potentiometer that is configured to generate an analog signal based upon the pressure signal received from the pressure sensor device and wherein the digital potentiometer is configured to transmit the analog signal to the patient monitoring device.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 3, 2017
    Assignee: Edwards Lifesciences Corporation
    Inventors: Luong N. Phan, Feras Al Hatib, Mark A. Konno, Lindon A. Baker, Richard A. Gros
  • Patent number: 9625345
    Abstract: The present invention provides for a system for calibrating operation of a compressor unit in a heating, ventilation, and air conditioning (HVAC) system. A measuring device measures an operating parameter of the HVAC system at a position where the measuring device is mounted on a refrigerant line of the HVAC system. The measuring device switches states when the value of the measured operating parameter reaches a switching value. A controller estimates a value of the first operating parameter at the position where the first measuring device is mounted on the refrigerant line, and the controller determines whether the estimated first operating parameter is within a threshold percentage of the switching value.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 18, 2017
    Assignee: Lennox Industries Inc.
    Inventors: Eric Berg, Rakesh Goel
  • Patent number: 9476790
    Abstract: This is an easy-to-use pressure gauge calibration apparatus, which uses a pressure gauge as a standard device and is not affected by an order of calibration pressure points or pressure holding time. The pressure gauge calibration apparatus includes a pressure gauge serving as a standard device, the pressure gauge being calibrated in advance by a calibration procedure to repeat necessarily restoring a predetermined pressure state after data acquisition at each calibration pressure point, and adjusting pressure to a subsequent calibration pressure point, a pressure generation control device, a shut-off valve, and a measurement control unit.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 25, 2016
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroaki Kajikawa, Tokihiko Kobata
  • Patent number: 9279736
    Abstract: A system and method for calibrating an electronically actuatable hydraulic valve in a work machine may include at least one supply valve and at least one drain valve to be calibrated and a bypass valve in fluid communication with a pump and a fluid source. The at least one supply valve and the at least one drain valve may be calibrated by opening the at least one supply valve and the at least one drain valve, closing the bypass valve, setting the pump to a desired flow output, determining a first current command for the at least one supply valve corresponding to a first target pressure parameter and determining a second current command for the at least one drain valve corresponding to a second target pressure parameter.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: March 8, 2016
    Assignee: Caterpillar Inc.
    Inventors: Eric C. Hughes, Matthew James Beschorner, Justin Philip Pahl
  • Publication number: 20150114080
    Abstract: The present invention provides for a system for calibrating operation of a compressor unit in a heating, ventilation, and air conditioning (HVAC) system. A measuring device measures an operating parameter of the HVAC system at a position where the measuring device is mounted on a refrigerant line of the HVAC system. The measuring device switches states when the value of the measured operating parameter reaches a switching value. A controller estimates a value of the first operating parameter at the position where the first measuring device is mounted on the refrigerant line, and the controller determines whether the estimated first operating parameter is within a threshold percentage of the switching value.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 30, 2015
    Applicant: Lennox Industries Inc.
    Inventors: Eric Berg, Rakesh Goel
  • Publication number: 20150114081
    Abstract: An outer panel and an inner panel of a vehicle door form a closed sealing chamber. A pressure sensor is attached to the inner panel to detect a pressure within the closed sealing chamber. The pressure sensor detects an increase in pressure caused by constriction of the closed sealing chamber when a collision occurs to a vehicle door. The in-vehicle speaker supplies a sound wave into the closed sealing chamber and detects, as an inspection pressure, a pressure in the closed sealing chamber when the sound wave is supplied. In an initial state of a vehicle, the inspection pressure is compared with an initial pressure threshold value, which is set based on a pressure in the closed sealing chamber generated when the sound wave is supplied. When the inspection pressure is equal to or lower than the initial pressure threshold value, it is detected that the air-tightness of the closed sealing chamber is lowered.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 30, 2015
    Inventor: Masahiko IMOTO
  • Patent number: 8997547
    Abstract: A device for taking pressure readings on a HVAC system includes a first needle connectable in communication with the HVAC system for taking a first pressure reading thereof. The first needle is mounted within a first gauge and configured to self-calibrate. The device further includes a second needle connectable in communication with the HVAC system for taking a second pressure reading thereof that is independent of the first pressure reading. The second needle is mounted within a second gauge and configured to self-calibrate. A first stepper motor actuates the first needle and a second stepper motor actuates the second needle. A microcontroller controls the first and second stepper motors to move the needles to a plurality of respective positions and thereby visually confirm calibration.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 7, 2015
    Assignee: Irwin Industrial Tool Company
    Inventor: Bryan Alfano
  • Patent number: 8988209
    Abstract: A monitoring device (20) of a vehicle wheel (11) is configured for detecting and transmitting, by a wireless connection, information relating to at least one characteristic quantity of the status of the wheel (11), such as the inflating pressure of a tire thereof. The device (20) has a casing (21-22) housing a circuit (30) adapted to transmit said information, the casing (21-22) being designed for coupling to an end portion (3a) of electrically conductive body (3) of a tire valve (2) of the wheel (11). The casing (21-22) includes a casing body (21) integrating interconnection means (28, 29, 40) prearranged to obtain both an electric connection of the circuit (30) to the end portion (3a) of the electrically conductive body (3) of the valve (2; 2?; 2?), and a mechanical coupling of the casing (21-22) to the end portion (3a) of the electrically conductive body (3) of the valve (2; 2?; 2?).
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: March 24, 2015
    Assignee: Eltek S.p.A.
    Inventors: Domenico Cantarelli, Paolo Colombo
  • Publication number: 20150025817
    Abstract: There is provided a method of monitoring a change in height of a device, the device comprising a sensor for measuring the air pressure at the device, the method comprising determining a pressure change threshold from a pre-determined height change and an estimate or measurement of air pressure; obtaining a plurality of measurements of the air pressure at the device; determining a change in the air pressure from two or more of the measurements; and determining if the height of the device has changed by more than the pre-determined height change using the determined change in the air pressure and the determined pressure change threshold.
    Type: Application
    Filed: March 11, 2013
    Publication date: January 22, 2015
    Applicant: Koninklijke Philips N.V.
    Inventor: Warner Rudolph Theophile Ten Kate
  • Publication number: 20150013427
    Abstract: A method is provided for calibrating a position-measuring system which includes the following steps: a) multiple measurements of a structure of a sample held by a sample stage at different pressures of the gaseous medium, in which the sample stage is arranged, b) ascertaining the pressure dependence when determining the position by use of an evaluation unit, c) establishing a calibration rule based on the ascertained pressure dependence, and d) applying the calibration rule when determining the position.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 15, 2015
    Inventors: Carola Blaesing-Bangert, Alexander Huebel
  • Publication number: 20150000044
    Abstract: When pressure detected by a pressure sensor connected to a calibration standard cell has continuously fallen within a regulated pressure range at calibration for a regulated duration at calibration, zero-adjustment is performed based on the pressure value detected by the pressure sensor. Then, communication between the plurality of cells is created to perform internal pressure adjustment of the plurality of cells to a predetermined internal pressure value, based on the pressure value detected by the pressure sensor connected to the calibration standard cell and calibrate each of pressure sensors connecting to the plurality of cells, based on the adjusted internal pressure. With this scheme, it is possible to a mattress and the like that can perform zero-point adjustment efficiently by adjusting the zero point in the same manner even if the mattress is formed of a plurality of branches, without releasing the pressure sensor of each cell to atmospheric pressure.
    Type: Application
    Filed: November 20, 2012
    Publication date: January 1, 2015
    Inventors: Hisao Morimura, Makoto Tanaka, Shinsuke Watanabe
  • Publication number: 20140373596
    Abstract: Disclosed are methods adapted to calibrate a liquid transfer system. The methods include providing a probe having a fluidly-coupled pressure sensor, the pressure sensor adapted to sense an aspiration pressure associated with the probe, performing one or more air aspirations and taking one or more pressure readings with the pressure sensor, and using one or more of the pressure readings to calibrate the pressure sensor. A novel liquid transfer system is also disclosed, as are other aspects.
    Type: Application
    Filed: January 9, 2013
    Publication date: December 25, 2014
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS INC.
    Inventors: Jianfang Wang, Mark H. Sprenkle, Jingjing Zhang, John M. Shrewsbury
  • Publication number: 20140352658
    Abstract: A system includes an ignition detection module, a pressure sensor, a pressure variation module, and a pressure sensor diagnostic module. The ignition detection module detects when an engine is started. The pressure sensor generates a first pressure signal indicating a first pressure within a fuel system of the engine when the engine is started and when a purge valve of the fuel system is closed. The pressure variation module determines an amount of variation in the first pressure signal over a first period. The pressure sensor diagnostic module determines a state of the pressure sensor based on the amount of variation in the first pressure signal over the first period.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 4, 2014
    Inventors: ROBERT JACKSON, JOHN F. VAN GILDER
  • Publication number: 20140290329
    Abstract: A process combustion transmitter is provided. The transmitter includes a process probe extendible into a flow of process combustion exhaust. The process probe has a measurement cell and a diffuser that define a chamber within the process probe. Electronic circuitry is coupled to the measurement cell and is configured to provide an indication relative to a combustion process based on an output signal of the measurement cell. A pressure sensor is coupled to the electronic circuitry and is fluidically coupled to the chamber. The electronic circuitry is configured to provide an adjusted calibration based on pressure measured within the chamber during a calibration.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: Rosemount Analytical, Inc.
    Inventors: James D. Kramer, Joseph C. Nemer, Anni S. Wey, Douglas E. Simmers, Mark Stojkov
  • Publication number: 20140260519
    Abstract: A method, device, or system is provided for improving dynamic pressure measurements. In one embodiment, a method comprises receiving, at a filter structure having a restricting tube, an input pressure having a static pressure (PS), a lower-frequency dynamic pressure (PLD) and a higher-frequency dynamic pressure (PHD); filtering, by the restricting tube, the input pressure to substantially pass an output pressure having the static pressure (PS), the lower-frequency dynamic pressure (PLD), and an attenuated higher-frequency dynamic pressure (PHD); and outputting, from the filter structure, the output pressure.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: KULITE SEMICONDUCTOR PRODUCTS, INC.
    Inventors: Adam Hurst, Joseph R. VanDeWeert, Scott Goodman, Boaz Kochman
  • Publication number: 20140260518
    Abstract: A system, method, and apparatus for certifying an end-of-train device pressure calibration is provided. The system includes a pressure calibration device configured to output a regulated pressure; and an end-of-train device comprising: a brake pipe interface adapted to receive the regulated pressure from the pressure calibration device; and a pressure sensing device configured to obtain a measured pressure by measuring the regulated pressure. At least one of the pressure calibration device and the end-of-train device comprises at least one controller configured to determine a calibration certification result based at least partially on a difference between the measured pressure and the regulated pressure.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventor: Wabtec Holding Corp.
  • Patent number: 8803072
    Abstract: An apparatus and method that can measure flux density in-situ under high vacuum conditions includes a means for confining a collection of identical, elemental sensor particles to a volume of space by initial cooling by laser or another method, then confinement in a sensor volume using externally applied magnetic and/or optical fields.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: August 12, 2014
    Assignee: British Columbia Institute of Technology
    Inventors: James Lawrence Booth, David Erik Fagnan, Bruce George Klappauf, Kirk William Madison, Jicheng Wang
  • Patent number: 8800347
    Abstract: A tool for calibrating a non-contact tonometer (NCT) comprises a body having a mating feature configured for removably mounting the body on the nosepiece or on the measurement head of the NCT, a pressure sensor carried by the body and arranged to receive an air pulse discharged by the NCT to provide a pressure signal in response to the air pulse, and a radiation emitter carried by the body, wherein the radiation emitter provides a pseudo-applanation event when the pressure signal reaches a predetermined level that is detectable by the NCT as though an actual corneal applanation had taken place. In one embodiment, the mating feature includes a mounting orifice for receiving a portion of the nosepiece. In another embodiment, the mating feature includes a pair of mounting pins sized for receipt by a corresponding pair of mounting holes in the measurement head of the NCT.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 12, 2014
    Assignee: Reichert, Inc.
    Inventors: Russell Bonaventura, David G. Kelkenberg, David L. Beverly, Donald E. Miller, David A. Luce
  • Publication number: 20140216127
    Abstract: In order to basically solve the problem of the change with time of a standard barometric pressure including a vacuum in a standard pressure chamber of a separated type pressure gauge, provided is a separated type pressure gauge in which even if the atmospheric pressure in a standard pressure chamber of the separated type pressure gauge fluctuates due to, for example, the change with the passage of time, a standard barometric pressure in the standard pressure chamber is measured and can be calibrated. In the separated type pressure gauge having a standard pressure chamber, a heat conduction type barometric sensor is equipped in the standard pressure chamber, and the atmospheric pressure in the standard pressure chamber is measured constantly or as necessary to use the measured atmospheric pressure as a standard barometric pressure. The heat conduction type sensor uses a silicon substrate and includes an absolute temperature sensor.
    Type: Application
    Filed: June 25, 2012
    Publication date: August 7, 2014
    Applicants: MD Innovations Co., Ltd, Purreon Japan Co., Ltd
    Inventors: Mitsuteru Kimura, Seiji Ishihara
  • Publication number: 20140208821
    Abstract: A method for re-calibrating installed downhole sensors used in hydrocarbon wells by the application of a calibration string inserted in the wells and deployed in close proximity to the installed downhole sensor.
    Type: Application
    Filed: January 26, 2013
    Publication date: July 31, 2014
    Applicant: Halliburton Energy Services
    Inventor: Mikko Jaaskelainen
  • Publication number: 20140190237
    Abstract: An output specification calibrating apparatus for a capacitive pressure sensor. The output specification calibrating apparatus enables adjustment of non-linearity, offset, and gain of the capacitive pressure sensor in a software manner at the time of shipment. Accordingly, it is feasible to easily adjust output specifications of the capacitive pressure sensor and to thereby meet various needs of customers.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 10, 2014
    Applicant: Auto Industrial Co., Ltd.
    Inventors: Kyong M. Park, Kang-Yoon LEE
  • Publication number: 20140182352
    Abstract: A system and method for evaluating the functionality of a blood pressure cuff. The system includes a support mandrel that receives a stimulation cuff connected to a blood pressure simulation device. The reference cuff is positioned around both the mandrel and the stimulation cuff and the blood pressure simulator is operated to inflate and deflate the stimulation cuff in a test pattern. A reference signal from the reference blood pressure cuff is received and stored for later analysis. Once the reference signal is recorded, a test blood pressure cuff is positioned around the stimulation cuff and the mandrel and the blood pressure simulator is operated to create the test pattern. An output signal from the test blood pressure cuff is recorded. The system compares the reference output signal to the test output signal to determine whether the test blood pressure cuff and the reference blood pressure cuff are functional equivalents.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Lawrence T. Hersh, Robert F. Donehoo, Gary J. Secora, Timothy R. Jubeck
  • Patent number: 8723120
    Abstract: A sensor element is provided for conversion of x-radiation into an electrical measurement signal, the sensor element including an x-radiation-absorbing fluid arranged in a housing, and a pressure sensor arranged to detect a pressure of the fluid on the pressure sensor and convert the detected pressure into an electrical measurement signal. A plurality of such sensor elements may be arranged in a matrix-type arrangement to form an x-ray detector.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 13, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Franz Atzinger, Gerhard Hahm, Raphael Henrich, Carsten Illenseer, Christoph Jablonski, Bernhard Sandkamp, Markus Schild, Michael Stark, Fabian Wloka
  • Patent number: 8682601
    Abstract: The safety valve vibration analyzer includes: a set condition input unit in which set conditions of a physical model including a safety valve and an upstream pipe connected to the safety valve are inputted; a safety valve governing equation holder that holds a safety valve governing equations; a pipe governing equation holder that holds a pipe governing equation; a processing unit that derives a time variation of a valve lift by using the set conditions inputted, the safety valve governing equations, and the pipe governing equations; and a valve lifting force function holder that holds a valve lifting force function. The processing unit derives the time variation of the valve lift by applying the valve lifting force function to the equation of motion of the valve disc.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: March 25, 2014
    Assignee: Chiyoda Corporation
    Inventor: Izuchi Hisao
  • Publication number: 20140041437
    Abstract: A method of verifying a condition of a single-crystal pressure sensor is provided. The method includes providing a single-crystal pressure sensor that has at least one electrical characteristic that varies with applied pressure being coupled to a first output and a second output. The pressure sensor also has at least one resistive element therein. A current is applied through the resistive element to heat the pressure sensor. At least one output of the pressure sensor is monitored to determine a response of the pressure sensor to current-induced heat. A verification output is provided based on the response.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 13, 2014
    Inventor: Robert C. Hedtke
  • Publication number: 20140026633
    Abstract: A system and method for detecting an anode pressure sensor failure in a fuel cell system. The system and method include a controller that sets an initial minimum anode pressure sensor value and an initial maximum anode pressure sensor value. The controller determines a desired time interval for sampling anode pressure measurements and determines a total number of samples of anode pressure measurements to be collected by the controller from an anode pressure sensor. The controller also compares a pressure difference between the initial or a measured minimum anode pressure and the initial or a measured maximum anode pressure to a predetermined pressure difference threshold and sets a pressure sensor fault if the pressure difference between the initial or measured minimum anode pressure and the initial or maximum anode pressure is less than the predetermined pressure difference threshold.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 30, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jun Cai, Daniel C. Di Fiore, Steven R. Falta, Sergio E. Garcia, Carol A. Galskoy
  • Publication number: 20130333440
    Abstract: A process variable transmitter for measuring a pressure of a process fluid includes a first inlet configured to couple to a first process pressure and a second inlet configured to couple to a second process pressure. A differential pressure sensor couples to the first and second inlets and provides an output related to a differential pressure between the first pressure and the second pressure. A first pressure sensor couples to the first inlet and provides an output related to the first pressure. Transmitter circuitry provides a transmitter output based upon the output from the differential pressure sensor and further provides enhanced functionality based upon the output from the first pressure sensor.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Inventor: Robert C. Hedtke
  • Patent number: 8589092
    Abstract: A non interrupting on-line water distribution pressure monitoring system for a dry barrel fire hydrant includes an upper portion or the head and a lower portion or the barrel having an opening. A water flow control mechanism mounted at the opening of the lower portion of the barrel for controlling the water flowing through the barrel. An operating rod for activating the water flow control mechanism having an upper operating rod and a lower operating rod extends through the barrel between the upper and lower portions. The upper operating rod is secured to the head and the bottom of the lower operating rod is secured through the water flow control mechanism to extend beyond the lower portion of the barrel. A water pressure measuring device is housed within the bottom of the lower operating rod and extending beyond the bottom of the lower operating rod.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 19, 2013
    Assignee: 2236128 Ontario Inc.
    Inventors: Don Plouffe, Rick Nissen
  • Patent number: 8571746
    Abstract: A control system is provided for controlling an electronic device. The control system includes a control apparatus and a processing device. The control apparatus includes a transponder and a coupling unit. The transponder of the control apparatus may be configured to receive an activation signal and transmit a control signal to the processing device. The coupling unit may be configured to enable and disable transmission of the control signal to the processing device. The processing device may be configured to receive the control signal and communicate the control signal to an electronic device or utilize the control signal to control the electronic device.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: October 29, 2013
    Assignee: Harman Becker Automotive Systems GmbH
    Inventor: Wolf-Torsten Tippelt
  • Publication number: 20130263643
    Abstract: The invention relates to a method for checking a pressure sensor comprising a reversibly deformable, in particular reversibly bendable measuring element (18) which supplies a measurement signal having a value depending on the degree of deformation of said measuring element, to the effect of whether the pressure sensor withstands a required maximum pressure which is larger by a predeterminable factor than a nominal pressure for which the sensor is designed.
    Type: Application
    Filed: December 5, 2011
    Publication date: October 10, 2013
    Applicant: ELMOS Semiconductor AG
    Inventor: Peter Binkhoff
  • Patent number: 8522597
    Abstract: A method and system for automatically calibrating a pressure sensor in a hydrogen storage system for a fuel cell vehicle. A low-range pressure sensor in the fuel cell system, which has much greater accuracy at low pressure readings, is used to calibrate a high-range pressure sensor in the hydrogen storage system. This calibration can only be done when a pressure regulator situated between the two sensors is in a fully open position. In such a condition, the high-range sensor can be calibrated to the value of the low-range sensor, thus improving the accuracy of the high-range sensor's readings. The calibration can be a simple setting of the high-range sensor to the value of the low-range sensor under static conditions, or the calibration can be done while gas is flowing from the hydrogen storage system to the fuel cell by accounting for the pressure drop between the two sensors.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: September 3, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Rainer Pechtold, Michael Leykauf, Ingo Hermann
  • Patent number: 8516876
    Abstract: Method for one of adjusting (taring) or re-calibrating an apparatus that includes a liquid-filled previously pressurized flexible tube that is closed at one end and is connected to a pressure sensor at an other end. Method includes activating predetermined controlling functions by establishing a differential of an external pressure exerted onto the tube by a person and a pressure prevailing in the previously pressurized tube. In establishing the differential, the method includes taking into account variations of the pressure prevailing in the previously pressurized tube, when no external pressure is being exerted on the tube by the person, due to at least one variable external ambient parameter.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: August 27, 2013
    Inventor: Enrico Piero Gilardi
  • Patent number: 8471721
    Abstract: A server rack includes a main body, an electronic scale, and an alarm. The main body is used for receiving a number of servers. The electronic scale includes a pressure sensor and a microcontroller. The main body presses on the pressure sensor so that the pressure sensor can measure the pressure from the main body to obtain a pressure signal. The microcontroller analyzes the pressure signal to calculating the total weight of the main body and the servers. The alarm stores a predetermined weight threshold, which is the total weight of the main body and the maximum servers that the main body can bear. The alarm also compares the measured total weight with the predetermined weight threshold. When the measured total weight is larger than the predetermined weight threshold, the alarm alarms.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: June 25, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Song-Lin Tong, Guang-Dong Yuan, Hai-Qing Zhou
  • Patent number: 8464590
    Abstract: In at least some embodiments, a pressure sensor configuration includes a pressure sensor and a switchable valve coupled to the pressure sensor. The switchable valve enables the pressure sensor to measure pressure at multiple ports of a pressurized tank.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: June 18, 2013
    Assignee: Cameron International Corporation
    Inventors: Mark Stanley Waldrop, James Lee Geer
  • Publication number: 20130139565
    Abstract: A pressure transmitter for measuring a pressure of a process fluid comprises a transmitter housing, a pressure sensor, a hydraulic relay system, a ferrofluid and transmitter electronics. The capacitance-based pressure sensor senses the pressure of the process fluid and is disposed within the housing. The hydraulic relay system comprises an isolation diaphragm positioned on an exterior of the transmitter housing, and an isolation tube extending from the pressure sensor to the isolation diaphragm. The ferrofluid is located in the isolation tube to transmit a change in the pressure of the process fluid at the isolation diaphragm to the sensor. The transmitter electronics are positioned within the housing and are configured to receive and condition a pressure signal from the pressure sensor.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 6, 2013
    Applicant: ROSEMOUNT INC.
    Inventor: Robert Carl Hedtke
  • Patent number: 8452255
    Abstract: A field device for use in an industrial process control or monitoring system includes terminals configured to connect to a two-wire process control loop configured to carry data and to provide power. In one embodiment, RF circuitry in the field device is configured for radio frequency communication having variable power consumption. In another embodiment, the RF circuitry is coupled to the field device through a separate digital communication bus. A method of modulating the power of RF communication based upon a process communication signal is also provided.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 28, 2013
    Assignee: Rosemount Inc.
    Inventor: Kelly M. Orth
  • Publication number: 20130098137
    Abstract: A tool for calibrating a non-contact tonometer (NCT) comprises a body having a mating feature configured for removably mounting the body on the nosepiece or on the measurement head of the NCT, a pressure sensor carried by the body and arranged to receive an air pulse discharged by the NCT to provide a pressure signal in response to the air pulse, and a radiation emitter carried by the body, wherein the radiation emitter provides a pseudo-applanation event when the pressure signal reaches a predetermined level that is detectable by the NCT as though an actual corneal applanation had taken place. In one embodiment, the mating feature includes a mounting orifice for receiving a portion of the nosepiece. In another embodiment, the mating feature includes a pair of mounting pins sized for receipt by a corresponding pair of mounting holes in the measurement head of the NCT.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Applicant: REICHERT, INC.
    Inventors: Russell Bonaventura, David G. Kelkenberg, David L. Beverly, Donald E. Miller, David A. Luce
  • Patent number: 8424362
    Abstract: Methods and apparatuses are provided for calibrating a vacuum component of a phacoemulsification system at different elevations. The design comprises running a vacuum component to be calibrated at an elevation; determining a maximum vacuum pressure available at the elevation; determining a range of vacuum pressure available from running the vacuum component at the elevation; calibrating the vacuum component based at least in part on a the maximum vacuum pressure available and the range of vacuum pressure available. The design also comprises a to be calibrated vacuum component; a pressure delivery device; an altimeter configured to determine the elevation of the vacuum component; component reading hardware configured to read at least one measured value from the pressure sensing components of the vacuum component when exposed to at least one pressure value from the pressure delivery device; and a computer configured to correlate a plurality of measured values to the elevation.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: April 23, 2013
    Assignee: Abbott Medical Optics Inc.
    Inventors: Abraham Hajishah, David A. King, Michael J. Claus
  • Publication number: 20130080032
    Abstract: Disclosed is a common rail fuel injection control apparatus that is used in an engine that drives power equipment, an actual measurement temperature difference that is a difference between a pre-pressurization temperature of the fuel and a post-pressurization release temperature of the fuel is obtained, and it is determined that a pressure sensor is failed when an absolute value of a difference between a representative temperature difference set in advance as a difference between the pre-pressurization temperature of the fuel and the post-pressurization release temperature of the fuel, and the actual measurement temperature difference exceeds a predetermined threshold value.
    Type: Application
    Filed: September 25, 2012
    Publication date: March 28, 2013
    Applicant: BOSCH CORPORATION
    Inventor: Bosch Corporation
  • Publication number: 20130044001
    Abstract: A holographic occlusion detection system has a holographic label placed onto a sensing portion of a pressure sensor connected to infusion tubing. The sensor at the sensing portion can have a relatively thin wall section and may be wider and flatter than a normal cross section of the tubing. The label is then illuminated by a polychromatic light source, and the light reflected off the holographic label is then received by a photodetector. Pressure changes within the tubing cause a change in orientation of the light holographic label, thereby resulting in a shift in the peak wavelength of the light sensed by the photodetector. This wavelength shift can then be calibrated to the swelling of the sensing portion so that pressure within the line can be calculated. In another variation, monochromatic light is reflected off a holographic label, and pressure changes are detected by measuring the amplitude of the reflected light.
    Type: Application
    Filed: September 11, 2012
    Publication date: February 21, 2013
    Inventor: Christopher Wiegel
  • Patent number: 8373421
    Abstract: An ambulatory infusion device for infusion of a liquid drug into a patient's body over an extended period of time and methods thereof are disclosed. The device includes a sensor assembly, which produces a sensor assembly output based on an infusion characteristic of the ambulatory infusion device and based on a supply voltage/current, and a supply unit which is coupled to a sensor of the sensor assembly and generates the supply voltage/current. A sensor testing unit detects a failure of the sensor assembly, wherein the sensor testing unit is coupled to the sensor assembly and the supply unit, and the sensor testing unit carries out a sensor testing sequence. The sensor testing sequence includes controlling the supply unit so as to produce a variation of the supply voltage/current, and determining whether the variation of the supply voltage/current produces a corresponding variation of the sensor assembly output.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: February 12, 2013
    Assignee: Roche Diagnostics International AG
    Inventors: Stefan Lindegger, Reto Schrotberger, Alex Muri
  • Publication number: 20130031949
    Abstract: A method to correct a current measurement of pressure of a gas stream delivered during a mission by a sensor in the engine. The method includes: estimating a drift error affecting the sensor on the basis of a difference existing between: (1) a calibration measurement of the pressure of the gas stream as delivered by the sensor in the engine, and (2) an atmospheric pressure measurement delivered by a sensor of the aircraft presenting accuracy greater than that of the sensor in the engine; these measurements being performed while the sensor in the engine and the sensor of the aircraft are subjected to same surrounding atmospheric pressure; and subtracting the estimated drift error from the current measurement.
    Type: Application
    Filed: February 11, 2011
    Publication date: February 7, 2013
    Applicant: SNECMA
    Inventors: Bruno Robert Gaully, Maurice Georges Vernochet
  • Patent number: 8297102
    Abstract: A system, apparatus, and method for testing a pressure-based sensor within a test chamber that can include a lock mechanism that is separate from the pressure release mechanism.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: October 30, 2012
    Inventor: Jacques Mouchet