Patent ID: 11879906
Assignee: INVENSENSE, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A microelectromechanical system (MEMS) inertial sensor, comprising:
a frequency scan generator that generates a frequency scan signal pattern, wherein the frequency scan signal pattern comprises a plurality of periodic signal portions each having a test frequency;
a proof mass that responds to an inertial force;
one or more sense electrodes that sense a movement of the proof mass;
sense circuitry coupled to the proof mass, wherein the sense circuitry is configured to generate a sense signal based on the sensed movement of the proof mass detected by the one or more sense electrodes; and
processing circuitry coupled to the sense circuitry; wherein the processing circuitry is configured to receive the sense signal generated by the sense circuitry, correlate the sense signal with the plurality of periodic signal portions to determine a plurality of correlation values, and identify a frequency associated with the sense signal based on one or more of the generated plurality of correlation values.