Pressure Patents (Class 702/98)
  • Patent number: 10908004
    Abstract: Differential pressure airflow sensor devices are disclosed. Disclosed are sensor devices for mounting on a fixed resistance having a low-pressure probe for extending through the fixed resistance from a housing and a high-pressure inlet to the housing. Disclosed are sensor devices having a plurality of pressure transducers.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: February 2, 2021
    Assignee: ONICON INC.
    Inventors: Paresh Davé, Matthew Maragos, William J. Sell
  • Patent number: 10874316
    Abstract: Systems and methods for adaptive sensors calibration are provided. The traditional systems and methods provide for heart rate monitoring using PPG methods but do not focus on adaptive calibration with real-time feedback and dynamic signal quality validation. Embodiments of the present disclosure provide for obtaining an initial value pertaining to a set of calibration parameters of a first sensor and performing a comparison with a pre-defined threshold; incrementing value of the set of calibration parameters by a pre-defined value and performing a comparison; obtaining from the sensor configuration matrix, an initial value pertaining to a set of calibration parameters of a second sensor and performing a comparison; and repeating the steps performed above if the comparisons performed does not match pre-defined quality threshold and finally updating sensor configuration matrix whenever pre-defined quality threshold is matched.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 29, 2020
    Assignee: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Nasimuddin Ahmed, Arijit Chowdhury, Avik Ghose, Tapas Chakravarty, Shalini Mukhopadhyay
  • Patent number: 10718747
    Abstract: Systems and methods for subterranean formation testing. A method may include lowering a formation testing tool into a subterranean formation, wherein the formation testing tool may comprise a plurality of chambers, a pump and a probe channel; extracting a fluid from the subterranean formation into the probe channel; determining fluid properties at different depths; generating a fluid property-depth gradient; moving the fluid into the plurality of chambers; and determining a concentration of an inorganic portion of a downhole flashed gas.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 21, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael T. Pelletier, Christopher Michael Jones, Darren Gascooke, Anthony H. Van Zuilekom
  • Patent number: 10631768
    Abstract: Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: April 28, 2020
    Assignee: Abbott Diabetes Inc.
    Inventors: Benjamin J. Feldman, Zenghe Liu, Tianmei Ouyang
  • Patent number: 10354447
    Abstract: A technique for facilitating understanding of a stereoscopic structure of an object in a 3-D image of point cloud data is provided. An image processing device includes a point cloud data display controlling unit, a marker display controlling unit, and a specified point cloud display controlling unit. The point cloud data display controlling unit displays a 3-D image of point cloud data on a screen. The marker display controlling unit displays a marker to specify a cut section of the 3-D image of the point cloud data. The specified point cloud display controlling unit displays a point cloud that constitutes the cut section among the point cloud data, as another image.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: July 16, 2019
    Assignee: TOPCON CORPORATION
    Inventors: Naoki Morikawa, Tadayuki Ito
  • Patent number: 10207069
    Abstract: Systems and methods for compensating for leaks in a ventilation system based on data obtained during periods within a breath in which the patient is neither inhaling nor exhaling. The methods and systems described herein more accurately and quickly identify changes in leakage. This information is then to estimate leakage later in the same breath or in subsequent breaths to calculate a more accurate estimate of instantaneous leakage based on current conditions. The estimated leakage is then used to compensate for the leak flow rates, reduce the patient's work of breathing and increase the patient's comfort (patient-ventilator breath phase transition synchrony).
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: February 19, 2019
    Assignee: Covidien LP
    Inventors: Mehdi M. Jafari, Rhomere S. Jimenez, Jeffrey K. Aviano, Gail F. Upham
  • Patent number: 9689770
    Abstract: A pressure sensor calibration system comprises one or more pressures sensors for calibrating sensor parameters based on a membrane deflection or a membrane displacement from an electrostatic force. A measuring component measures capacitance values corresponding to applied voltages at the electrodes of the one or more pressure sensors. Sensor parameters are derived from capacitance measurements and a pressure measurement, which are utilized by a calibration component for calibration and recalibration of the one or more pressure sensors.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: June 27, 2017
    Assignee: Infineon Technologies AG
    Inventor: Dirk Hammerschmidt
  • Patent number: 9631987
    Abstract: A force-sensitive capacitive sensor that includes a first conductive plate, a second conductive plate that is spaced apart from the first conductive plate, and a compressible dielectric insulator positioned between the first conductive plate and the second conductive plate. The sensor also includes a first protective insulator, a second protective insulator sealed to the first protective insulator to encase the first conductive plate, the second conductive plate, and the compressible dielectric insulator, and a circuit attached via wires to the first conductive plate and the second conductive plate. The sensor may also include electromagnetic shielding. The circuit is configured to sense a change in capacitance between the first conductive plate and the second conductive plate caused by compression of the compressible dielectric insulator resulting from a person occupying the sensor or a support surface positioned above the sensor, and transmit output based on the sensed change in capacitance.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 25, 2017
    Inventors: Mark Andrew Hanson, Adam T. Barth, Samuel Alden Ridenour, Paul Michael Wempe
  • Patent number: 9518888
    Abstract: In a method for ascertaining an offset of an output signal of an evaluation circuit integrated in a sensor, the output signal is supplied to a control unit which analyzes the output signal, and a reset of the evaluation circuit for the adjustment of the output signal to a base level is performed prior to each measuring operation of the sensor, and the control unit ascertains the offset of the output signal of the evaluation circuit upon an occurrence of a start signal output by the evaluation circuit.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: December 13, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Harald Ryll
  • Patent number: 9417146
    Abstract: Apparatus, systems, and fabrication methods are provided for sensing devices. An exemplary sensing device includes a first sensing arrangement to measure a first property and provide one or more measured values for the first property, a second sensing arrangement to measure a second property, a storage element coupled to the second sensing arrangement to maintain a stored value for the second property measured by the second sensing arrangement, and a control system coupled to the first sensing arrangement and the storage element to determine one or more calibrated measurement values for the first property using the one or more measured values for the first property from the first sensing arrangement and the stored value for the second property.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: August 16, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventor: Chad S. Dawson
  • Patent number: 9413319
    Abstract: Apparatus and methods calibrate one or more gain ranges for errors. A system can identify offset error and amplification error that occurs when the system transitions from amplifying an input signal by a first gain factor to amplifying the input signal by a second gain factor. To identify the amplification error, the system can compare the slope of the data signal in a source or reference gain range with the slope of the data signal in the destination gain range. To identify the offset error, the system can compare the amplitude of the data signal in a destination gain range with an expected value in the destination gain range.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: August 9, 2016
    Assignee: ANALOG DEVICES, INC.
    Inventors: Lalinda D. Fernando, Michael Coln
  • Patent number: 9291519
    Abstract: A method for correcting an offset for a pressure difference measured using a differential pressure sensor situated in an air duct. The offset is computed using an output signal of a pressure sensor, including: transferring the air duct into a predetermined operating situation in which a predetermined pressure difference is considered to be applied to the differential pressure sensor, measuring a level of the output signal in the predetermined operating situation, and computing the offset based on the measured level of the output signal.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: March 22, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Soenke Mannal, Berthold Burk, Horst Mueller, Michael Bachner
  • Patent number: 9117166
    Abstract: A measurement device is disclosed, embodiments of which are adapted to withstand, detect, and record detection of heat cycle events, including autoclave cycles. Embodiments of the measurement device comprise a sensor for measuring a characteristic of a medium and a heat cycle detection unit. Embodiments of the heat cycle detection unit comprise a temperature or atmospheric pressure responsive element, a detection module, data interface, and data memory. In one disclosed embodiment, the temperature or pressure responsive element is configured to respond to a characteristic of a heat cycle event while the heat cycle detection unit is off. In another disclosed embodiment, the detection module is configured to automatically power off the heat cycle detection unit in response to detecting an autoclave cycle. Methods of using the devices are also disclosed.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 25, 2015
    Assignee: Broadley-James Corporation
    Inventors: William E. Reynolds, IV, Robert J. Garrahy, Andrew W. Hayward, Robert Fish, Jared H. Nathanson, Scott T. Broadley
  • Patent number: 9104210
    Abstract: A tire temperature control device includes a temperature control unit that controls at least one of a tire temperature of front wheels and a tire temperature of rear wheels based on a temperature difference between the temperature of the tire on the front wheel and the temperature of the tire on the rear wheel of a vehicle. The temperature control unit controls, for example, the tire temperature corresponding to predetermined temperatures based on temperature characteristics that are related to maneuverability of the vehicle, fuel economy of the vehicle, and a friction coefficient.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: August 11, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryosuke Okubo
  • Publication number: 20150127287
    Abstract: Systems and methods for calibrating individual pressure sensors using mathematical models to compensate for inaccurate measurements of pressure from those pressure sensors are described. Also described are systems and methods for applying those mathematical models to adjust measurements from those pressure sensors during position computations.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 7, 2015
    Inventors: Thomas Wolf, Michael Dormody
  • Publication number: 20150100265
    Abstract: A method for processing a signal (SB) from a pressure measurement device (DP) in a combustion chamber of a cylinder of an internal combustion engine includes: detecting the start of a plateau phase (SP1); calculating a pair of values of a slope (ax0, . . . , axN) and an intercept (bx0, . . . , bxN) of a straight line approximating the values of the signal acquired by the processing unit during the plateau phase; determining a voltage compensation value of the signal on the basis of each pair of calculated slope and intercept values; compensating the output signal (SB) of the pressure sensor on the basis of the determined voltage compensation value; detecting the start of a voltage peak phase (P2) following the plateau phase (SP1); and, during the detected peak phase, compensating the signal (SB) on the basis of the last pair of slope (axN) and intercept (bxN) values calculated during the plateau phase.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 9, 2015
    Inventor: Christophe DUCHEMIN
  • Publication number: 20150094976
    Abstract: A method for correcting an ambient pressure measurement, a method for calculating a temperature, and an apparatus for affecting the same for an aircraft measuring system are provided. The methods include the steps of receiving an airspeed measurement from a laser sensor, receiving a total pressure measurement, and calculating an ambient pressure correction. A corrected ambient pressure or a calculated temperature may be calculated. The apparatus includes a laser sensor configured to provide an airspeed measurement, an aircraft instrument configured to provide a total pressure measurement, and a processing system.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 2, 2015
    Applicant: University Corporation for Atmospheric Research
    Inventors: William A. COOPER, Scott Spuler, Mike Spowart, Dirk Richter
  • Patent number: 8990039
    Abstract: A calibration apparatus includes a fixture, which is coupled to accept a probe so that a distal tip of the probe presses against a point in the fixture and produces first measurements indicative of a deformation of the distal tip relative to a distal end of the probe, in response to pressure exerted on the distal tip. A sensing device is coupled to the fixture and is configured to produce second measurements of a mechanical force exerted by the distal tip against the point. A calibration processor is configured to receive the first measurements from the probe, to receive the second measurements from the sensing device and to compute, based on the first and second measurements, one or more calibration coefficients for assessing the pressure as a function of the first measurements.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 24, 2015
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Assaf Govari, Yaron Ephrath, Andres Claudio Altmann
  • Publication number: 20150057960
    Abstract: A method for determining a state of credibility of measurements made by sensors of an aircraft is provided. This method includes determining a speed of the aircraft, from static and total pressure measurements, determining a coefficient of lift of the aircraft from an incidence measurement and from said speed, determining a weight of the aircraft, determining if an equation of lift of the aircraft is satisfied, activating a state of optimal credibility, wherein the measurements made by said sensors are considered to be reliable if the said equation of lift is satisfied, activating a state of non-optimal credibility, wherein the measurements of at least one sensor are considered to be unreliable if the said equation of lift is not satisfied.
    Type: Application
    Filed: March 26, 2013
    Publication date: February 26, 2015
    Inventor: Sebastien Dupont De Dinechin
  • Patent number: 8965725
    Abstract: In order to mitigate the negative effects of a change in atmospheric pressure, an improved capacitance diaphragm gauge (CDG) sensor incorporates an independent ambient atmospheric pressure sensor near the CDG sensor body. The ambient atmospheric sensor is located outside the CDG sensor body to sense the ambient atmospheric pressure surrounding the CDG sensor body. The ambient atmospheric sensor provides an output that represents the ambient atmospheric pressure. A sensor output processing circuit receives the output of the ambient atmospheric sensor as well as the output of the CDG sensor. The processing circuit utilizes the output from the ambient atmospheric pressure sensor to fine tune the CDG measurement of pressure by executing an in situ, real time, automatic calibration adjustment of the CDG.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: February 24, 2015
    Assignee: Reno Technologies, Inc.
    Inventors: David J. Ferran, Robert J. Ferran
  • Publication number: 20150012235
    Abstract: A system and method compensate for effects of gravity on the diaphragm of a capacitance diaphragm gauge (CDG). The CDG generates a measured absolute pressure value in response to an applied absolute pressure on an input of the CDG. The CDG is subjected to a variable orientation of the CDG with respect to the earth's surface that can cause inaccurate pressure measurements. A pressure measuring circuit generates a measured value of an applied absolute pressure provided to an input of the CDG. A tilt sensor generates at least one tilt sensor output value that is responsive to an orientation of the CDG with respect to the earth's surface. A processing system adjusts the measured absolute pressure value by a calibration factor to generate a calibrated absolute pressure value representing the applied absolute pressure, wherein the calibration factor is selected in response to the at least one tilt sensor output value.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 8, 2015
    Inventors: David J. Ferran, Robert J. Ferran
  • Patent number: 8930157
    Abstract: A digital pressure transducer includes a sensor, a memory component and a microprocessor. A correction algorithm and set of correction coefficients are provided and stored in the memory. An application applies the correction coefficients to convert digitized values to pressure values. The transducer may include a read/write port adapted to communicate with a computer terminal; and at least one read-only port adapted to communicate with a host device. A method of calibrating a digital pressure transducer includes storing a correction algorithm and correction coefficients in the digital pressure transducer separate from a host device.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: January 6, 2015
    Assignee: Dresser, Inc.
    Inventors: Roman Leon Artiuch, Paul Stephen Hooks, Nicolae Rau
  • Publication number: 20140350882
    Abstract: A method and assembly for acquiring pressure data. A pressure sensor is applied to a target surface on an individual. A calibrator and a processing element are in communication with the pressure sensor. Processing element receives pressure data and provides an integrated pressure value over a measurement time period. The integrated pressure value is compared to an alert value and to a change condition value. Where an alert value is exceeded, an alert is transmitted to an output device for display. Where a change condition value is exceeded, a measurement parameter of the pressure sensor is changed, or the calibrator is applied to the pressure sensor to recalibrate the pressure sensor to a recalibrated pressure range.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: ORPYX MEDICAL TECHNOLOGIES INC.
    Inventors: Julia Breanne EVERETT, Marcel GROENLAND, Amanda Rae HEHR, Daryl David COUTTS, Llewellyn Lloyd TURNQUIST, Travis Michael STEVENS
  • Patent number: 8875491
    Abstract: An exhaust gas aftertreatment system and method are provided. The system comprises a controller, a pump, and a volume quantity dispensing unit. The volume quantity dispensing unit comprises a pressure transducer comprising an electric pressure sensor, at least one fine atomizing nozzle for apportioning the aqueous solution directly into an exhaust gas flow, and at least one means for changing a pressure value. The means changes the pressure value in such a way that a pressure output signal from the pressure transducer to the controller is modified from an actual pressure value sensed by the pressure sensor. A first signal provided by the controller to the pump and a second signal provided by the controller to the volume quantity dispensing unit are adapted based on the output signal from the pressure transducer and a further signal indicative of an operating state of the internal combustion engine.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: November 4, 2014
    Assignee: Cummins Ltd.
    Inventors: Friedrich Zapf, Thorsten Pelz, Heico Stegmann
  • Patent number: 8878598
    Abstract: A sensing module of the disclosure comprises a sensing device, a voltage generating device, a compensating device, and a voltage controlling device. The sensing device comprises a first reference terminal and a second reference terminal. The compensating device is coupled between the second reference terminal and a voltage reference terminal. The voltage controlling device is respectively coupled to the first reference terminal, the second reference terminal, and the voltage generating device. The voltage controlling device is used for outputting a first voltage signal to the first reference terminal based on the reference voltage signal and a cross voltage of the compensating device. A temperature variation of an impedance of the compensating device positively correlates to a temperature variation of an impedance of the sensing device. A temperature variation of a sensitivity of the sensing device negatively correlates to a temperature variation of the reference voltage signal.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 4, 2014
    Assignee: British Virgin Islands Central Digital Inc.
    Inventor: Chun-Yu Tai
  • Patent number: 8874398
    Abstract: Systems and methods for estimating a height of a mobile device are described. A reference pressure estimate is generated using atmospheric data from one or more reference locations. Various approaches for determining the reference pressure estimate are described. The reference pressure estimate is used, along with a pressure measurement at a position of a mobile device, to estimate the height of the mobile device.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 28, 2014
    Assignee: NextNav, LLC
    Inventors: Arun Raghupathy, Subramanian S Meiyappan, Thomas Wolf
  • Patent number: 8874399
    Abstract: Pipetting errors are detected by: (a) during pipetting, measuring the pressure in the tip of a pipetting device and determining an earlier rate of change of the pressure in the tip; (b) based on the earlier rate of pressure change and a previous pressure value pi, determining an expectation range for the pressure pi+1 at a further moment in time and/or an expectation range for the rate of pressure change ?i+1 based on the pressure at the further moment in time ti+1; (c) at the further moment in time ti+1 measuring the pressure pi+1 in the tip; and (d) determining the occurrence of a pipetting error by comparing the measured pressure pi+1 at the further moment ti+1 in time and/or a rate of pressure change ?i+1 calculated on the basis of the pressure pi+1 at the further moment ti+1 in time.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: October 28, 2014
    Assignee: bioMérieux S.A.
    Inventors: Thomas Beumer, Bas Fleskens
  • Patent number: 8862420
    Abstract: A system and method compensate for effects of gravity on the diaphragm of a capacitance diaphragm gauge (CDG). The CDG generates a measured absolute pressure value in response to an applied absolute pressure on an input of the CDG. The CDG is subjected to a variable orientation of the CDG with respect to the earth's surface that can cause inaccurate pressure measurements. A pressure measuring circuit generates a measured value of an applied absolute pressure provided to an input of the CDG. A tilt sensor generates at least one tilt sensor output value that is responsive to an orientation of the CDG with respect to the earth's surface. A processing system adjusts the measured absolute pressure value by a calibration factor to generate a calibrated absolute pressure value representing the applied absolute pressure, wherein the calibration factor is selected in response to the at least one tilt sensor output value.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 14, 2014
    Assignee: Reno Sub-Sustems Canada Incorporated
    Inventors: David J. Ferran, Robert J. Ferran
  • Publication number: 20140278184
    Abstract: Systems, apparatuses and methods are disclosure for adjusting and/or modifying outputs of sensors based on deadband effects, where sensor adjustments may be based on a value, which may be a constant, such as an error value for the sensor, or a dynamic value. Differential pressure values measured from the output of sensors are compared to the value, and, in response to the comparison, the output of the sensor may be set substantially to zero if the measured differential pressure value is less than the value. Otherwise, the measured differential pressure values are passed through if they are is equal to or greater than the value. Additional techniques employing zero offsets, span adjustment and error scale adjustments are further disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: DWYER INSTRUMENTS, INC.
    Inventors: Rodney Corder, Andrew Mieczkowski
  • Publication number: 20140278185
    Abstract: An exemplary embodiment of the present invention provides systems and methods of compensating sensor drift. In one example embodiment, a system may comprise a primary sensor having a primary full-scale range and configured to output a primary environmental condition signal indicative of an environmental condition; a reference sensor having a reference full-scale range and configured to output a reference environmental condition signal indicative of the environmental condition, wherein the reference full-scale range is less than the primary full-scale range; and a drift compensation system configured to determine a drift compensation signal using the primary environmental signal and the reference environmental condition signal responsive to the reference environmental conditional signal being in the reference full-scale range and compensate the primary environmental condition signal using the drift compensation signal.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Kulite Semiconductor Products, Inc.
    Inventor: Wolf S. Landmann
  • Patent number: 8825428
    Abstract: Systems and methods are provided for storing and recalling metrics associated with physiological signals. It may be determined that the value of a monitored physiological metric corresponds to a stored value. In such cases, a patient monitor may determine that a calibration is not desired. In some cases, a patient monitor may recall calibration parameters associated with the stored value if it determined that the stored value corresponds to the monitored metric value.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 2, 2014
    Assignee: Neilcor Puritan Bennett Ireland
    Inventors: Paul Stanley Addison, James N. Watson
  • Patent number: 8801635
    Abstract: An apparatus and method are adapted for characterizing human tissue type. A plurality of inflatable bladders enable the application of kinetic energy to the human tissue. Collected data responsive to the applied kinetic energy differentiates between different tissue types and patient loading. The data can be routed via a network to a remote location.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: August 12, 2014
    Assignee: HLZ Innovation, LLC
    Inventor: George Hovorka
  • Patent number: 8805626
    Abstract: A singular sealed apparatus and method suitable for confirming pressure measurements in a rebreather prior to use of the rebreather. The singular sealed apparatus may have a canister lid, gas sensors and a processor, all from a rebreather, as well as a pressure sensor, an input device, a processor, an indicator and a pod with a pressure measurement outlet, a gas supply inlet, a relief valve and a gas exit valve. Alternatively, the singular sealed apparatus may have a gas sensor from a rebreather and an analyzer, a pressure sensor, an input device, a processor, an indicator, a lid and a pod with a pressure measurement outlet, a gas supply inlet, a relief valve and a gas exit valve.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: August 12, 2014
    Inventor: Kevin W Juergensen
  • Publication number: 20140222362
    Abstract: In order to mitigate the negative effects of a change in atmospheric pressure, an improved capacitance diaphragm gauge (CDG) sensor incorporates an independent ambient atmospheric pressure sensor near the CDG sensor body. The ambient atmospheric sensor is located outside the CDG sensor body to sense the ambient atmospheric pressure surrounding the CDG sensor body. The ambient atmospheric sensor provides an output that represents the ambient atmospheric pressure. A sensor output processing circuit receives the output of the ambient atmospheric sensor as well as the output of the CDG sensor. The processing circuit utilizes the output from the ambient atmospheric pressure sensor to fine tune the CDG measurement of pressure by executing an in situ, real time, automatic calibration adjustment of the CDG.
    Type: Application
    Filed: December 31, 2013
    Publication date: August 7, 2014
    Inventors: David J. Ferran, Robert J. Ferran
  • Publication number: 20140222363
    Abstract: A system and method compensate for effects of gravity on the diaphragm of a capacitance diaphragm gauge (CDG). The CDG generates a measured absolute pressure value in response to an applied absolute pressure on an input of the CDG. The CDG is subjected to a variable orientation of the CDG with respect to the earth's surface that can cause inaccurate pressure measurements. A pressure measuring circuit generates a measured value of an applied absolute pressure provided to an input of the CDG. A tilt sensor generates at least one tilt sensor output value that is responsive to an orientation of the CDG with respect to the earth's surface. A processing system adjusts the measured absolute pressure value by a calibration factor to generate a calibrated absolute pressure value representing the applied absolute pressure, wherein the calibration factor is selected in response to the at least one tilt sensor output value.
    Type: Application
    Filed: January 14, 2014
    Publication date: August 7, 2014
    Inventors: David J. Ferran, Robert J. Ferran
  • Patent number: 8798952
    Abstract: A calibration apparatus includes a fixture, which is coupled to hold a distal end of a medical probe. A plurality of weights, which have respective masses and respective bottom surfaces that are oriented at respective angles with respect to the distal end of the probe, are coupled to rest on a distal tip of the probe so as to apply to the distal tip respective force vectors that cause a deformation of the distal tip relative to the distal end. A calibration processor is configured to receive from the probe measurements indicative of the deformation of the distal tip in response to the force vectors, and to compute, based on the measurements, the masses and the angles, calibration coefficients for assessing the force vectors as a function of the measurements.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: August 5, 2014
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Assaf Govari, Andres Claudio Altmann, Yaron Ephrath
  • Patent number: 8731849
    Abstract: A hydrostatic pressure testing system for hydrostatic pressure testing of pipe or other vessels. A control center may include a computer program that monitors, records, and controls the system during testing. A test fluid assembly may include a fill conduit capable of providing a test fluid to an inlet section of a vessel to be tested in response to a command from the computer program. A pressure-release safety assembly may have a vent conduit in fluid communication between an outlet section of the vessel and a safety valve. The safety valve may be in fluid communication with a bleed tank for storing an outlet flow of test fluid from the vessel. The safety valve is actuated to relieve fluid pressure in the vessel in response to a selective condition. A method of using the system to conduct hydrostatic pressure testing is also described.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: May 20, 2014
    Assignee: Greene's Energy Group, LLC
    Inventors: Lubbert Westra, Michael W. Breaux, Russell Richard, Jr., Christopher D. Wilson
  • Publication number: 20140136136
    Abstract: An NOx detection apparatus computes a first NOx concentration NOxpo on the basis of a second pumping current Ip2, and sets correction coefficients a, b (concentration variation correction information) on the basis of the first NOx concentration NOxpo. Therefore, the NOx detection apparatus can set the correction coefficients a, b in accordance with the concentration of NOx actually contained in a to-be-measured gas. Since the NOx detection apparatus uses Equation 3, determined by the correction coefficients a, b, for correction of the first NOx concentration NOxpo, the NOx detection apparatus can correct the first NOx concentration NOxpo in accordance with the state of change of the NOx concentration even when the magnitude of an output variation caused by a pressure change changes depending on the NOx concentration.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 15, 2014
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Hirotaka ONOGI, Kenji KATO, Satoshi TERAMOTO
  • Publication number: 20140136135
    Abstract: Systems and methods for calibrating multiple electronic devices are described herein. Such methods may include obtaining, by a processor, data from a plurality of reference electronic devices, analyzing, by a processor, the data and calibrating, by the processor, the electronic device based on the analyzed data obtained from the plurality of reference electronic devices.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: IMAGE INSIGHT INC.
    Inventors: Gordon A. DRUKIER, Eric P. RUBENSTEIN, Yonatan B. RUBENSTEIN, Joshua C. KESSLER, Peter R. SOLOMON, Marek A. WOJTOWICZ
  • Patent number: 8718956
    Abstract: Described is an apparatus for measuring mass change under high pressure, comprising: a high pressure cell comprising a reference quartz crystal microbalance sensor and a sample quartz crystal microbalance sensor, wherein the sample quartz crystal microbalance sensor is coated with a test sample selected from the group consisting of nanoporous materials and metal-organic frameworks; a pressure sensor operatively connected to the high pressure cell; a thermocouple operatively connected to the high pressure cell, wherein the high pressure cell is maintained at a pre-selected temperature; a gas inlet fluidly connected to the high pressure cell; and a gas outlet fluidly connected to the high pressure cell. Also described are methods of making and using the apparatus.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 6, 2014
    Assignees: Phillip 66 Company, Georgia Tech Research Corporation
    Inventors: Peter Hesketh, Sankar Nair, Ken McCarley, Milad Navaei, Kevin Bagnall, Anandram Venkatasubramanian
  • Patent number: 8676519
    Abstract: A device and a method for aiding inflation for a vehicle involves obtaining access to vehicle tire pressure and temperature data, and utilizing an under-inflation detection module and an inflation condition testing module, thus making it possible to carry out a test for detecting a possible optimal inflation condition if the following criteria are met:—there is a non-critical under-inflation state for at least one of the vehicle tires;—the tires are not in an overheated state;—and the tire state is unchanged by sunlight. When the test module determines the optimal inflation condition, a signal is outputted. Such a method causes tire inflation to be carried out under favorable conditions actually corresponding to the reference value provided by the manufacturers.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: March 18, 2014
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A., TRW Automotive U.S. LLC
    Inventors: Franck Liberge, Philippe Corniot
  • Patent number: 8666556
    Abstract: In some embodiments, a method of using feedforward to control a system component may include determining if a feedforward term exists in a feedforward table for a received operating set point. If a feedforward term does not exist, the system component may be incremented until the system is within a first acceptable tolerance of the desired set point. In some embodiments, a measure of steady state error may be determined and compared to a second acceptable tolerance. If within the acceptable tolerance, the corresponding feedforward term may be recorded in the feedforward table. In some embodiments, if the feedforward term exists for the operating set point, the system component may be controlled using controller output that corresponds to the feedforward term. When a change to the system is detected that is associated with possible changes to the feedforward values, new feedforward values may be generated for the feedforward table.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: March 4, 2014
    Assignee: Alcon Research, Ltd.
    Inventor: Daryush Agahi
  • Patent number: 8650415
    Abstract: System, methods, and apparatuses produce simulated human physiological waveforms such as electrocardiograph (ECG) and blood pressure signals where the microcontroller and/or digital-to-analog converters may be switched to a lower power-consuming state by programmable instructions and switched on in response to a programmable sleep timer.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: February 11, 2014
    Assignee: PRONK Technologies, Inc
    Inventor: Karl Ruiter
  • Patent number: 8634952
    Abstract: A fan control method performed by a computer having a processor and a fan includes predicting a load of the processor for a job to be executed by referring to a memory that stores information on the load of the processor according to a job type, determining fan rotation control according to a temperature of the processor under the load, and controlling the fan according to the determined fan rotation control.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: January 21, 2014
    Assignee: Fujitsu Limited
    Inventors: Satoshi Kazama, Yasushi Hara, Yoshiyasu Nakashima
  • Patent number: 8620556
    Abstract: A correction method in which characteristic curves and/or correction values are produced, by way of which the drive current for one or more electrically activated hydraulic values operated in an analog fashion is measured during a pressure regulation in such a way that, during the operation of an anti-lock regulation, one or a respective characteristic curve is first prescribed and then the prescribed characteristic curve is corrected, particularly in a learning process, wherein, after a pressure build-up phase, the current pressure model value (Pmod) is compared to and/or analyzed using a model locking pressure level (Pmax).
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: December 31, 2013
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Jochen Müller, Jochen Zimmermann, Robert Schmidt, Dieter Burkhard
  • Patent number: 8606535
    Abstract: The invention describes a method for temperature compensation of measured pressure values in a tire pressure control system of a vehicle, which is equipped with wheels with pneumatic tires in which a pressure sensor arranged below the tire obtains the pressure values and a temperature sensor arranged below the tire obtains temperature values and the measured pressure values are referred to a predefined reference temperature, giving due consideration to the known proportionality between the pressure and the temperature at a volume of air in the tire which is assumed to be constant. The invention provides that an offset of the temperature supplied by the temperature sensor from the mean air temperature prevailing in the tire is estimated for the temperatures measured at any time in the tire, and the currently measured temperature values are corrected using the estimated temperature offset as a correction value.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 10, 2013
    Inventors: Ulrich Häfele, Michael Dennig
  • Patent number: 8600692
    Abstract: The present document describes a ready to use sensing device which is auto-configurable when turned on. The sensing device includes one or more sensors and a communication port. When turned on, the system automatically contacts a central server via the communication port and requests the address of a second server with which the sensing device is associated. Upon receipt of the address of the second server, the sensing device contacts the second server and requests its customized configuration settings. When received, the configuration settings are installed, and the sensing device starts to sample the output of the sensors and sends the samples to the second server for storage. The user may view the measurement data by accessing the second server through the internet. The minimum memory capacity required for operating the sensing device is very low, due to the fact that the samples are sent to the second server every time the samples are taken.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: December 3, 2013
    Assignee: Sysacom
    Inventor: Denis Lachapelle
  • Publication number: 20130317772
    Abstract: Apparatus, systems, and fabrication methods are provided for sensing devices. An exemplary sensing device includes a first sensing arrangement to measure a first property and provide one or more measured values for the first property, a second sensing arrangement to measure a second property, a storage element coupled to the second sensing arrangement to maintain a stored value for the second property measured by the second sensing arrangement, and a control system coupled to the first sensing arrangement and the storage element to determine one or more calibrated measurement values for the first property using the one or more measured values for the first property from the first sensing arrangement and the stored value for the second property.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 28, 2013
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventor: Chad S. Dawson
  • Patent number: 8594954
    Abstract: Method of estimating the volume (Vtk) of a tank (1), comprising: a step of calculating the volume (Vtk) of the tank (1) by applying the law of conservation of enthalpy (H) of the gas, considering that the transfer of the checking stream of gas is adiabatic (Ttk(t1)=Ttk(t2) and Tsi(t1)=Tsi(t2)), expressing the enthalpy of the gas in the tank as a function only of the temperature Ttk(ti) of the gas and the pressure Ptk(ti) of the gas (Htk=function of (Ttk(ti); Ptk(ti)), using the perfect gas law or a Van der Waals equation of state expressing the volume of the tank Vtk(ti) (in cubic meters) only as a function of the known or previously estimated variables.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: November 26, 2013
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jonathan Macron, Loïc Damongeot
  • Publication number: 20130311123
    Abstract: The invention relates to a method and a system for determining a target variable to be measured in a mobile device. A first physical variable is measured with the aid of a first sensor and a second physical variable with the aid of a second sensor. The second physical variable is different to the first physical variable, or is measured using a different technique. The value of the target variable is calculated with the aid of the measurement of the first and second physical variables. An estimate for the target variable is determined with the aid of at least the measurement of the first physical variable. At least a first error estimate is determined, which depicts the accuracy of the measurement of the first physical variable. The estimate of the target variable is filtered using both the first error estimate and the measurement of the second physical variable.
    Type: Application
    Filed: March 14, 2013
    Publication date: November 21, 2013
    Applicant: SUUNTO OY
    Inventors: Heikki Nieminen, Erik Lindman