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    Pressure sensor
    1.
    发明授权
    Pressure sensor 有权

    公开(公告)号：US12130192B2

    公开(公告)日：2024-10-29

    申请号：US17894664

    申请日：2022-08-24

    申请人： Yazaki Corporation

    发明人： Daichi Muramoto

    IPC分类号： G01L19/14 ,  G01L9/04 ,  G01L19/00

    CPC分类号： G01L19/14 ,  G01L9/04 ,  G01L19/0069

    摘要： Provided is a pressure sensor including: a housing portion including a housing part housing a pressure sensor module, a concave portion facing the housing part across an inner wall, and a through hole part formed in the inner wall; a filter covering the through hole part; and a cover mounted on the housing portion while covering the concave portion and including cutout parts. The concave portion includes a bottom surface that is one surface of the inner wall, and two side surfaces perpendicular to the bottom surface and opposed to each other. The cover is formed with a rectangular upper plate and two rectangular side plates continuous with edges of the upper plate in a vertical direction and opposed to each other. The upper plate is arranged to face the bottom surface. The two side plates are arranged between the two side surfaces opposed to each other.

    Bridge sensor error check
    6.
    发明授权
    Bridge sensor error check 有权

    公开(公告)号：US11480631B2

    公开(公告)日：2022-10-25

    申请号：US15969053

    申请日：2018-05-02

    申请人： Melexis Technologies SA

    发明人： Javier Bilbao de Mendizabal ,  Mathieu Poezart ,  Gael Close

    IPC分类号： G01R33/00 ,  G01R33/07 ,  G01L27/00 ,  G01R33/09 ,  G01L9/04 ,  G01D18/00 ,  G01R31/28 ,  G01R17/10

    摘要： A method for detecting an error in a bridge sensor which is adapted for measuring a physical parameter. The method comprises biasing a first contact pair of the bridge sensor at least two times in a first direction and at least one time in a second direction opposite to the first direction; while biasing the first contact pair, measuring an output signal on a different contact pair of the bridge sensor, thus obtaining at least three output measurements which are representative for the physical parameter and which are separated by time intervals; combining the output measurements to obtain an output value which is indicative for an error in the bridge sensor, wherein the output measurements which are combined are only those output measurements which are measured when biasing the first contact pair.

    SINGLE-USE PLASTIC PRESSURE SENSOR
    8.
    发明申请
    SINGLE-USE PLASTIC PRESSURE SENSOR 有权

    公开(公告)号：US20220099514A1

    公开(公告)日：2022-03-31

    申请号：US17038789

    申请日：2020-09-30

    申请人： Rosemount Inc.

    发明人： Charles R. Willcox ,  Jason H. Rud

    IPC分类号： G01L9/12 ,  G01L9/04 ,  G01L9/00

    摘要： A polymeric fluid sensor includes an inlet configured to receive fluid and an outlet. A polymeric tube is fluidically interposed between the inlet and the outlet and has a first sensing location with a first sidewall thickness and a second sensing location, spaced from the first sensing location, with a second sidewall thickness. A sleeve is disposed about the polymeric tube. The first sidewall thickness is less than the second sidewall thickness and a first sensing element is disposed at the first location and a second sensing element is disposed at the second location. In another example, the first and second sidewall thicknesses are the same and a fluid restriction is disposed within the polymeric tube between the first and second sensing locations.

    Temperature-compensated strain gauge measurements
    9.
    发明授权
    Temperature-compensated strain gauge measurements 有权

    公开(公告)号：US11287347B2

    公开(公告)日：2022-03-29

    申请号：US16941570

    申请日：2020-07-29

    申请人： ABB Schweiz AG

    发明人： Paul Szasz ,  Andreas Decker

    IPC分类号： G01L9/06 ,  G01L9/04 ,  G01L27/00 ,  G01L9/02 ,  G01L19/00

    摘要： A device for measuring a strain of an object independently of temperature variations includes: at least one strain gauge that is attachable directly or indirectly to the object whose strain is to be measured; a first temperature sensor for measuring a temperature of the at least one strain gauge; read-out electronics for measuring a change of electrical resistance of the at least one strain gauge as a measured electrical resistance change, the read-out electronics including at least one fixed resistor whose value is relied upon when obtaining a value of the change of electrical resistance of the strain gauge as a result of the measurement, the read-out electronics being such that a temperature of the at least one fixed resistor is known and/or obtainable by measurement; and an evaluation unit for: correcting the measured electrical resistance change, and/or a strain of the strain gauge and/or the strain of the object.

    PRESSURE SENSOR
    10.
    发明申请
    PRESSURE SENSOR 有权

    公开(公告)号：US20210108977A1

    公开(公告)日：2021-04-15

    申请号：US17064145

    申请日：2020-10-06

    申请人： AZBIL CORPORATION

    发明人： Hirofumi TOJO

    IPC分类号： G01L9/00 ,  G01L9/04

    摘要： A pressure sensor includes a sensor chip. The sensor chip has two diaphragms, recessed portions that serve as first pressure inlet chambers disposed so as to respectively adjoin top surfaces of the diaphragms, and recessed portions that serve as second pressure inlet chambers disposed so as to respectively adjoin bottom surfaces of the diaphragms. A cavity is provided in the sensor chip such that, when a difference between pressures respectively applied to a top surface and bottom surface of the diaphragm is zero, an output voltage of a Wheatstone bridge circuit made up of strain gauges provided in the diaphragm is zero.