Apparatus and methods for proximity sensing circuitry
US9599448B2 · kind B2 · utility
0Cited by
13References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 29, 2007 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Jan 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive proximity sensor is disclosed. The proximity sensor includes a source circuit with an inductive element configured to deliver energy to a resonator when a source current is changed. In various embodiments, the source current is provided a step current source. In various embodiments, the source current is provided by constant current source coupled to the inductive element by a switch. Apparatus and methods for operating the inductive proximity sensor are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.