Method and system for noise immunity for automatically triggered impedance and capacitance sensors
US11256363B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2021 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Jun 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensor system includes a receiver circuit including a receiver electrode, a transmitter electrode, and control logic. The control logic is configured to determine that an amplitude of a transmitter electrode output signal is greater than an amplitude threshold. Based on this determination, the control logic is configured to whether a frequency of the transmitter electrode output signal is within an allowed frequency range. Based on a determination that the frequency of the transmitter electrode output signal is not within the allowed frequency range, the control logic is configured to determine that noise is present in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.