Foreign object detection method and power side capable of detecting foreign object
US11953645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2022 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A foreign object detection method for detecting whether a foreign object exists on a function pin of a power supplier side or a power receiver side, wherein the power supplier side and the power receiver side are coupled to each other in a detachable fashion. The foreign object detection method includes: discharging a capacitor via the function pin, wherein the capacitor is electrically connected to the function pin; providing a sensing current flowing through the function pin, to charge the capacitor; sensing a voltage variation of the function pin during a predetermined period; and comparing the voltage variation with a predetermined variation, so as to determine whether a foreign object exists on the function pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.