Title:
THERMO-OPTICAL CURRENT SENSOR AND THERMO-OPTICAL CURRENT SENSING SYSTEMS
Document Type and Number:
WIPO Patent Application WO1990010238
Kind Code:
A3
Abstract:
A thermo-optical current sensor includes a resistive or semiconducting sensing element that has an optical property that varies as a function of temperature. Current to be measured flows through the sensing element thereby causing heating that is detected by a change in the optical property. The sensing element may be either a resistive or semiconducting material having a temperature dependent optical property or a resistive or semiconducting material that is in thermal contact with an optical temperature sensor. The thermo-optical current sensor may be used as a field meter to measure the intensity of an electromagnetic field or as a current meter to measure the current flowing through a power line.
Inventors:
SAASKI ELRIC W (US)
LAWRENCE DALE M (US)
LAWRENCE DALE M (US)
Application Number:
PCT/US1990/000903
Publication Date:
October 18, 1990
Filing Date:
February 21, 1990
Export Citation:
Assignee:
METRICOR INC (US)
International Classes:
G01R1/07; G01R19/03; (IPC1-7): G01R19/03
Foreign References:
| US4051435A | 1977-09-27 | |||
| US4540293A | 1985-09-10 |
Other References:
IEEE International Microwave Symposium, Symp. 1975: Microwaves in Services to Man, Palo Alto, 12-14 May 1975, IEEE, (Piscataway, US), O.F. CANDAI et al.: "A Nonperturbing Liquid Crystal Fiberoptic Microwave Power Probe", pages 297-298
1987 IEEE Internatiol Symposium on Electromagnetic Compatibility, Atlanta, Georgia, 25-27 August 1987, IEEE, (US), K.R. LEE et al.: "Improved Measurement Techniques of Bridgewire Heating Caused by Induced Electromagnetic Radiation", pages 32-35 see Abstract; figure 1
Instruments and Experimental Techniques, Volume 14, No. 3II, May/June 1971, Plenum Publishing Corp., (New York, US), L.V. KUTUKOV et al.: "Use of Phosphors to Investigate the Thermal Modes of Radio-Electronic Circuits", pages 826-827
PATENT ABSTRACT OF JAPAN, Volume 7, No. 150 (P-207) (1295), 30 June 1983, & JP, A, 5862572 (Canon K.K.) 14 April 1983
1987 IEEE Internatiol Symposium on Electromagnetic Compatibility, Atlanta, Georgia, 25-27 August 1987, IEEE, (US), K.R. LEE et al.: "Improved Measurement Techniques of Bridgewire Heating Caused by Induced Electromagnetic Radiation", pages 32-35 see Abstract; figure 1
Instruments and Experimental Techniques, Volume 14, No. 3II, May/June 1971, Plenum Publishing Corp., (New York, US), L.V. KUTUKOV et al.: "Use of Phosphors to Investigate the Thermal Modes of Radio-Electronic Circuits", pages 826-827
PATENT ABSTRACT OF JAPAN, Volume 7, No. 150 (P-207) (1295), 30 June 1983, & JP, A, 5862572 (Canon K.K.) 14 April 1983
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