MEMS sensor compensation for off-axis movement

    公开(公告)号:US10766764B2

    公开(公告)日:2020-09-08

    申请号:US16538166

    申请日:2019-08-12

    Abstract: A microelectromechanical system (MEMS) sensor includes a MEMS layer that includes fixed and movable electrodes. In response to an in-plane linear acceleration, the movable electrodes move with respect to the fixed electrodes, and acceleration is determined based on the resulting change in capacitance. A plurality of auxiliary electrodes are located on a substrate of the MEMS sensor and below the MEMS layer, such that a capacitance between the MEMS layer and the auxiliary loads changes in response to an out-of-plane movement of the MEMS layer or a portion thereof. The MEMS sensor compensates for the acceleration value based on the capacitance sensed by the auxiliary electrodes.

    MEMS sensor with high voltage switch

    公开(公告)号:US10427930B2

    公开(公告)日:2019-10-01

    申请号:US15620619

    申请日:2017-06-12

    Abstract: A system and/or method for utilizing microelectromechanical systems (MEMS) switching technology to operate MEMS sensors. As a non-limiting example, a MEMS switch may be utilized to control DC and/or AC bias applied to MEMS sensor structures. Also for example, one or more MEMS switches may be utilized to provide drive signals to MEMS sensors (e.g., to provide a drive signal to a MEMS gyroscope).

    MEMS CIRCUIT FOR CAPACITIVE NON-LINEAR CORRECTION

    公开(公告)号:US20170336205A1

    公开(公告)日:2017-11-23

    申请号:US15159655

    申请日:2016-05-19

    Inventor: Matthew Thompson

    CPC classification number: G01C19/56 G01C19/5776 G01P15/123 G01P15/125

    Abstract: A micro-electro-mechanical system includes a proof mass, an anchor, an amplifier, a sense element, a reference element, and a feedback element. The proof mass is configured to move in response to a stimulus. The anchor is coupled to the proof mass via a spring. The amplifier is configured to receive a proof mass signal from the proof mass via the spring and the anchor. The amplifier may be configured to amplify the received proof mass signal to generate an output signal. The sense element may be connected between the proof mass and a first input signal. The reference element may be connected between the anchor and a second input signal. The feedback element may be connected between the proof mass and the output signal. The feedback element and the sense element may change in response to proof mass displacement.

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