Target sensor
US9030212B2 · kind B2 · utility
0Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | May 29, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/9527
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Target sensor comprising: sensor probe having a resonance frequency that changes as the separation of the sensor probe and a target changes. Oscillator arranged to apply a radio frequency (RF) signal to the sensor probe, the oscillator having: control circuitry configured to regulate the frequency of the RF signal applied to the sensor probe to below the resonance frequency of the sensor probe. Detector arranged to detect an electrical characteristic of the oscillator that varies with the impedance of the sensor probe indicating an interaction of the sensor probe with the target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.