Method to obtain a temperature coefficient-compensated output signal in an optical current measuring sensor
US6417660B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 22, 1999 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0322
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a magneto-optical sensor with −/+ intensity norming, the temperature-coefficient-compensated output signal (S) is obtained by formation of a quotient of the alternating portion (PAC) of the intensity-normed signal (P) and a function (f(PDC, PACeff)), determined by a calibration measurement, of a direct portion (PDC) of the intensity-normed signal (P) and of a root-mean-square value (PACeff) of the alternating portion (PAC). A corresponding method for sensors with AC/DC intensity norming is indicated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.