TRANSDUCER DEVICE
    31.
    发明申请

    公开(公告)号:US20210028724A1

    公开(公告)日:2021-01-28

    申请号:US16982639

    申请日:2019-03-22

    Abstract: A transducer device includes a first dielectric layer, a first electrode layer and a second electrode layer that hold the first dielectric layer in a thickness direction, a second dielectric layer provided continuously from the first dielectric layer, a third electrode layer and a fourth electrode layer that hold the second dielectric layer in the thickness direction, and a controller. The controller calculates a command value of voltage to be applied to the first electrode layer and the second electrode layer and applies a voltage corresponding to the command value to the first electrode layer and the second electrode layer so that the first dielectric layer is deformed in the thickness direction. The controller measures a capacitance Cs of the second dielectric layer via the third electrode layer and the fourth electrode layer and calculates the command value in reference to the measured capacitance Cs.

    NONINVASIVE BLOOD PRESSURE SENSOR
    32.
    发明申请

    公开(公告)号:US20210018384A1

    公开(公告)日:2021-01-21

    申请号:US17063868

    申请日:2020-10-06

    Abstract: Example systems, apparatuses and methods are disclosed for sensing a force applied by an external source in a fluid monitoring tube. An example system comprises a force sensing device and signal conditioning circuitry configured to be electrically coupled to the force sensing device. The example system further comprises a housing configured to enclose the force sensing device and the signal conditioning circuitry. The housing comprises a snap structure configured to attach the housing to a base plate and retain the force sensing device and the signal conditioning circuitry in the housing.

    Pressure sensing apparatus and method

    公开(公告)号:US10852875B2

    公开(公告)日:2020-12-01

    申请号:US16430549

    申请日:2019-06-04

    Abstract: Apparatus (22) for processing signals from a touch panel (10) is described. The touch panel (10) includes a layer of piezoelectric material (16) disposed between a plurality of sensing electrodes (14, 20) and at least one common electrode (15). The apparatus (22) includes a first circuit (23) for connection to the plurality of sensing electrodes (14, 20). The first circuit (23) is configured to generate a plurality of first pressure signals (29). Each first pressure signal (29) corresponds to one or more sensing electrodes (14, 20) and is indicative of a pressure acting on the touch panel (10) proximate to the corresponding one or more sensing electrodes (14, 20). The apparatus (22) also includes a second circuit (24) for connection to the at least one common electrode (15). The second circuit (24) is configured to generate a second pressure signal (30) indicative of a total pressure applied to the touch panel (10). The apparatus (22) also includes a controller (25) configured to determine an external interference signal (32) based on a weighted sum over the second pressure signal (30) and the plurality of first pressure signals (29). The controller (25) is also configured to compare the external interference signal (32) against a pre-calibrated threshold (Vthresh). The controller is also configured, in response to the external interference signal (32) being greater than or equal to the pre-calibrated threshold (Vthresh), to output an interference flag (Intflag) indicating that the first and second pressure signals (29, 30) are influenced by coupling to one or more external electrical fields.

    Noninvasive blood pressure sensor
    34.
    发明授权

    公开(公告)号:US10830653B2

    公开(公告)日:2020-11-10

    申请号:US16366194

    申请日:2019-03-27

    Abstract: Example systems, apparatuses and methods are disclosed for sensing a force applied by an external source in a fluid monitoring tube. An example system comprises a force sensing device and signal conditioning circuitry configured to be electrically coupled to the force sensing device. The example system further comprises a housing configured to enclose the force sensing device and the signal conditioning circuitry. The housing comprises a snap structure configured to attach the housing to a base plate and retain the force sensing device and the signal conditioning circuitry in the housing.

    SENSOR ASSEMBLIES WITH INTEGRATED FEATURES
    35.
    发明申请

    公开(公告)号:US20200340868A1

    公开(公告)日:2020-10-29

    申请号:US16394915

    申请日:2019-04-25

    Abstract: Sensor assemblies comprise a sensor die including a first member and a second member. The first member comprises a diaphragm extending between opposed surfaces of the first member. A number of electrical sensing elements are disposed within the first member and positioned adjacent the diaphragm along a first member surface. The second member is attached with the first member along surface comprising the electrical sensing elements. The second member has a recessed section forming cavity with the first member to accommodate deflection of the diaphragm. The first member includes an actuation element that extends outwardly from a surface and that is positioned directly on the diaphragm. The sensor assembly includes metallic connectors and contacts for facilitating connection between the electrical sensing elements and an outer surface of the sensor die to provide a surface mount electrical connection of the sensor assembly.

    Pressure sensor with testing device and related methods

    公开(公告)号:US10788389B2

    公开(公告)日:2020-09-29

    申请号:US15797773

    申请日:2017-10-30

    Inventor: Alberto Pagani

    Abstract: A pressure sensor is for positioning within a structure. The pressure sensor may include a pressure sensor integrated circuit (IC) having a pressure sensor circuit responsive to bending, and a transceiver circuit coupled to the pressure sensor circuit. The pressure sensor may include a support body having a recess therein coupled to the pressure sensor IC so that the pressure sensor IC bends into the recess when the pressure sensor IC is subjected to external pressure.

    MEMS strain gauge sensor and manufacturing method

    公开(公告)号:US10775248B2

    公开(公告)日:2020-09-15

    申请号:US15753147

    申请日:2016-07-08

    Inventor: Man Wong Kevin Chau

    Abstract: The present invention is related to a sensor. In particular, the present invention is related to a MEMS strain gauge die and its fabrication process. The MEMS strain gauge die comprises a handle, a device layer and a cap all connected together. A silicon oxide layer is formed between the handle and the device layer. Another silicon oxide layer is formed between the device layer and the cap. Recesses are respectively formed on the handle and the cap and face each other. The handle recess and the cap recess are connected to form a cavity. The device layer, which spans the cavity, further comprises a bridge on which a plurality of piezoresistive sensing elements are formed. The present strain gauge die is more immune to temperature effects. It is especially suitable for operating in a high temperature environment and is capable of delivering accurate and reliable strain measurements at low cost.

    METHODS AND SYSTEMS FOR NON-CONTACT MAGNETOSTRICTIVE SENSOR RUNOUT COMPENSATION

    公开(公告)号:US20200166418A1

    公开(公告)日:2020-05-28

    申请号:US16678261

    申请日:2019-11-08

    Abstract: A stress sensing system for measuring stress in a conductive target material includes at least one sensor positioned proximate to the conductive target material. The sensor is configured to measure stress in the conductive target material and to transmit a signal indicative of the measured stress to a controller. The controller is coupled in communication with the sensor. The controller is configured to receive the signal from the sensor, determine a runout portion of the signal corresponding to the runout of the conductive target material, determine a runout pattern waveform from the runout portion, and subtract the runout pattern waveform from the signal.

    Multilayer tactile sensor with fastening means

    公开(公告)号:US10663360B2

    公开(公告)日:2020-05-26

    申请号:US15869153

    申请日:2018-01-12

    Abstract: Multilayer tactile sensor with a first layer that comprises a first electrode, a second layer that comprises a second electrode and an intermediate layer of pressure-sensitive material that is disposed between the first and second layers and that spaces apart the first electrode from the second electrode. The sensor further comprises a fastening means for fixing the first and second electrodes relative to each other. At least the first electrode is made of electrically conductive yarn and extends along a defined longitudinal direction. The fastening means comprises at least a first seam that extends in the longitudinal direction and that comprises at least one thread that is fed repeatedly multiple times through the pressure-sensitive material in order to fix the first electrode in a defined position.

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