Sensor electronics in a vehicle door handle
US8482303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2010 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Oct 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960705
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A solution for sensor electronics provided in a door handle of a vehicle with a sensor control circuit (6) that is provided on a circuit board (1) and with a sensor electrode (11) of a capacitive sensor for detection of the approach of an object to the door handle connected to the sensor control circuit through which the sensitivity is improved, interference is decreased, and a compact structure is achieved. This task is solved by sensor electronics with a ground-metallization plane having a ground potential and a shielding electrode provided between the sensor electrode (11) and the ground-metallization plane, whereby the circuit board (1) has at least four metallization planes (7, 8, 9, 10) insulated from each other by insulating layers (13, 14, 15), whereby a first metallization plane (7) is provided on an upper side (5) of circuit board (1) including wiring connections between the components of the sensor control circuit (6), a second metallization plane (8) that is the ground-metallization plane, a third metallization plane (9) that includes the shielding electrode, and a fourth metallization plane (10) that includes the sensor electrode (11) so that the wiring connections of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.