Capacitive sensor, the associated evaluation circuit and actuator for a motor vehicle
US10161765B2 · kind B2 · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2015 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Sep 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9622
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to a capacitive sensor, the associated evaluation circuit and an actuator for a motor vehicle having the above-mentioned sensor for detecting the distance, speed, or position of an object, having a reference capacitance and two measuring capacitances, wherein a square-wave voltage is applied to the reference capacitance and the measuring capacitances via a resistor and a pulse which has a variable period and represents a measure of the particular measuring capacitance is obtained with the aid of a switching stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.