Low power inertial sensor architecture and methods
US11236999B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Apr 22, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5649
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A controller for a MEMS gyroscope includes a first portion for generating a drive signal in response to an output from drive capacitors of the MEMS gyroscope, wherein the output signal has a resonant frequency and a phase, a second portion for determining a sampling signal in response to the output, wherein the sampling signal has a frequency that is a multiple of the resonant frequency, and has the phase, a multiplexer for outputting a multiplexed data comprising first data signals from first capacitors and second capacitors of the MEMS gyroscope multiplexed in response to the sampling signal, and a processing portion for reducing the resonant frequency from the multiplexed data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.