Apparatus and methods for proximity sensing circuitry
US7808235B2 · kind B2 · utility
12Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Mar 31, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive proximity sensor is disclosed. The proximity sensor includes a resonator with a bifurcated inductance coupled to a plurality of transimpedance amplifiers. A portion of the resonator is configured to generate eddy currents in a target containing metal. In various embodiments, the transimpedance amplifiers provide signals associated with eddy currents to a synchronous detector. Apparatus and methods for operating the inductive proximity sensor are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.