Device for sensing an obstacle in the opening range of a powered closure element for a motor vehicle
US6936986B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Jun 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for sensing an obstacle in the opening range of a movable closure element of a motor vehicle, more particularly an electrically powered window pane or sunroof is defined. The device is provided with at least one sensor electrode generating an electrical field in the opening range of the closure element. It is furthermore provided with a control unit for detecting a change in the capacitance of the electrical field caused by the presence of an obstacle in the opening range of the closure element, the control unit providing a control signal for a drive powering the closure element. The sensor electrode is connected to the control unit either directly or via a shielded conductor. The control unit is arranged on an electronic controller of the drive and compensates the influence of the shielded conductor on the electrical field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.