Current sensing system
US7394982B2 · kind B2 · utility
3Cited by
3References
42Claims
0Family size
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Key dates
| Filing date | Jun 17, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Dec 4, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current sensing system comprises a current transformer; a burden resistor connected across a secondary of the current transformer; a piezo-optic sensor coupled to the burden resistor, comprising a piezoelectric transducer, an optical fiber and a first optical filter with a first bandwidth; and an optical interrogator, configured for sending an originating signal to the first bandwidth optical filter and receiving a resulting data signal and a second optical filter with a second bandwidth for filtering the resulting data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.