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False triggering prevention in a resonant phase sensing system

  • US 10,642,435 B2
  • Filed: 03/06/2019
  • Issued: 05/05/2020
  • Est. Priority Date: 03/29/2018
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a resistive-inductive-capacitive sensor;

    a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to;

    at a plurality of periodic intervals, measure phase information associated with the resistive-inductive-capacitive sensor; and

    based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor; and

    a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.

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