Systems and methods for capacitive proximity sensing
US9568301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Apr 29, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes first, second, third and fourth capacitive sensors, each disposed about a longitudinal axis. The first capacitive sensor is disposed along a first axis radial to the longitudinal axis, and the third capacitive sensor is disposed along the first axis opposite the first capacitive sensor. The second capacitive sensor is disposed along a second axis radial to the longitudinal axis, the fourth capacitive sensor is disposed along the second axis opposite the second capacitive sensor, and the second axis is different from the first axis. Each capacitive sensor is configured to transmit a respective signal based at least in part on a position of a rotational component along the respective axis relative to the longitudinal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.