Digital eddy current proximity system: apparatus and method
US6664782B2 · kind B2 · utility
16Cited by
64References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
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.