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    INDUCTIVE SENSOR WITH DIGITAL DEMODULATION
    1.
    发明申请
    INDUCTIVE SENSOR WITH DIGITAL DEMODULATION 审中-公开

    公开(公告)号：US20190212171A1

    公开(公告)日：2019-07-11

    申请号：US15864097

    申请日：2018-01-08

    Applicant: Raytheon Company

    Inventor： John J. Anagnost

    IPC: G01D5/20 ,  G01R19/252

    CPC classification number: G01D5/20 ,  G01D5/2053 ,  G01R19/252

    Abstract: An eddy current displacement sensor includes devices or modules for digitizing and interpreting analog signals received from sensor coils. Periodic analog signals, such as sinusoidal or square wave signals, are sent to the coils with a suitable frequency. The output from the coils is then digitized using one or more analog-to-digital converters, at a sampling rate (frequency) that may be greater than that of the frequency of the input signal. The digitized output signals may then be processed to determine displacement of an object relative to the sensor coils, for example using magnitude and/or phase of the digital signals to estimate position. Digitizing the analog output signals directly, rather than only after such signals have been converted to DC signals, allows improvement in processing, as well as enabling flexibility in how the signals are used to estimate position.

    INDUCTIVE SENSOR DEVICE WITH LOCAL ANALOG-TO-DIGITAL CONVERTER
    2.
    发明申请
    INDUCTIVE SENSOR DEVICE WITH LOCAL ANALOG-TO-DIGITAL CONVERTER 审中-公开

    公开(公告)号：US20200049482A1

    公开(公告)日：2020-02-13

    申请号：US16056916

    申请日：2018-08-07

    Applicant: Raytheon Company

    Inventor： Philip H. Ives ,  John J. Anagnost

    IPC: G01B7/14 ,  G01B7/00

    Abstract: A position sensor device includes a sensor head with a sensor coil, and an analog-to-digital (A/D) converter for digitizing output from the sensor coil, and sending the digital input to electronics of the device for further processing. The A/D converter is located closer to the coil than it is to the electronics, which may be in an electronics box mounted remotely from the sensor head. The A/D converter may be a part of the sensor head, may be adjacent to the sensor head, and/or may be connected to the sensor coil by an analog output cable. The analog output cable between the sensor coil and the A/D converter may be of negligible length (and of negligible capacitance), and in any event may be shorter than a digital output cable between the A/D converter and the electronics.

    Inductive sensor device with local analog-to-digital converter
    4.
    发明授权
    Inductive sensor device with local analog-to-digital converter 有权

    公开(公告)号：US10816316B2

    公开(公告)日：2020-10-27

    申请号：US16056916

    申请日：2018-08-07

    Applicant: Raytheon Company

    Inventor： Philip H. Ives ,  John J. Anagnost

    IPC: G01B7/14 ,  G01B7/00

    Abstract: A position sensor device includes a sensor head with a sensor coil, and an analog-to-digital (A/D) converter for digitizing output from the sensor coil, and sending the digital input to electronics of the device for further processing. The A/D converter is located closer to the coil than it is to the electronics, which may be in an electronics box mounted remotely from the sensor head. The A/D converter may be a part of the sensor head, may be adjacent to the sensor head, and/or may be connected to the sensor coil by an analog output cable. The analog output cable between the sensor coil and the A/D converter may be of negligible length (and of negligible capacitance), and in any event may be shorter than a digital output cable between the A/D converter and the electronics.

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