Foreign object detection method for wireless charging systems
US9735585B2 · kind B2 · utility
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1References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Apr 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00034
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, device and techniques are disclosed for measuring a parasitic load in an environment. A transmitter may transmit an out of order pulse such that a receiver with synchronous rectification circuitry rejects induced power from the transmitter based on the out of order pulse. The parasitic load is determined by measuring the amount of power induced by the transmitter while the intended receiver rejects the power subtracted by known inherent loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.