Keyless entry assembly having capacitance sensor operative for detecting objects
US9199608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96079
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A keyless entry assembly includes a carrier with an electrical conductor thereon, a light pipe having an indicator, and a controller. The light pipe is connected to the carrier such that the indicator and conductor are in alignment. The light pipe is operable for receiving light to illuminate the indicator. The carrier with the light pipe connected thereto is mountable to a user accessible portion of a vehicle. The conductor capacitively couples to an electrically conductive object proximal to the conductor while the conductor is driven with an electrical charge such that capacitance of the conductor changes due to the conductor capacitively coupling with the object. The controller is operable for driving the conductor with the electrical charge, measuring the conductor capacitance to determine whether an electrically conductive object is proximal to the conductor, and controlling a vehicle operation as a function of the object being proximal to the conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.