Synchronous timing to MEMS resonant frequency
US12152884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2022 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Nov 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A signal processing system for a sensor. The system comprises a digital signal processing system configured to set a drive signal frequency for the primary drive transducer, a voltage controlled oscillator configured to receive an input indicative of the resonant frequency and to generate a first periodic signal at a first multiple of the resonant frequency, and a first phase locked loop, configured to receive the first periodic signal, and to generate a second periodic signal at a second multiple of the resonant frequency. The first and second periodic signals are used to control the operation of an analog-to-digital converter (ADC) configured to sample the primary pick off signal and a digital-to-analog converter (DAC) configured to generate a drive signal waveform applied to the primary drive transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.