Method and circuitry for removing circling drifts in NDT/NDI measurement display
US9350985B2 · kind B2 · utility
0Cited by
2References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2013 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/9046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method and an apparatus for removing circling drifts on the display of the measured eddy current or other continuous waves. The circling dot which is supposed to be a static dot can obscure information required by the operator to judge if a small defect is present. Embodiments of presently disclosed harmonic rejection filters are tunable and employed to effectively abate or eliminate signals with frequencies that are multiples of operating frequencies, resulting in the removal of the circling effects on the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.