Electrical capacitance proximity sensor
US7138809B2 · kind B2 · utility
11Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/9602
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electrical capacitance proximity sensor with high detector sensitivity has an insulating substrate, a detector electrode and an earth electrode formed in a fixed pattern on one face of the insulating substrate, and a detector circuit which detects an object approaching the detector electrode and the earth electrode by detecting the capacitance between the detector electrode and the earth electrode. The detector electrode is formed in a shape such that it surrounds the earth electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.