Digital eddy current proximity system: apparatus and method
US6346807B1 · kind B1 · utility
24Cited by
61References
25Claims
0Family size
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Key dates
| Filing date | Oct 22, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Oct 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/9046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital eddy current proximity system including a digital impedance measuring device for digitally measuring the proximity probes impedance correlative to displacement motion and position of a metallic target object being monitored. The system further including a cable-length calibration method, an automatic material identification and calibration method, a material insensitive method, an inductive ratio method and advanced sensing characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.