Method of detecting a user's intention to lock or unlock an automotive vehicle door and associated detection device
US10648203B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Nov 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/65
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for detecting a user's intention to lock or to unlock a door of a motor vehicle, using a detection device integrated into a handle of the door, including an ultra-high-frequency antenna, one face of which is situated close to a second outer locking surface or respectively a first outer unlocking surface of the handle, an ultra-high-frequency antenna matching circuit, an ultra-high-frequency signal generator and an electronic unit. The method includes determining a parameter representative of a ratio between a power of a signal transmitted by the ultra-high-frequency signal generator to the ultra-high-frequency antenna and a power of a signal reflected from the ultra-high-frequency antenna to the ultra-high-frequency signal generator, which powers are measured beforehand, and detecting the intention to lock or respectively to unlock when the parameter is higher than or lower than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.