Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-02-14
1998-11-24
Le, Que
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
385 13, 340555, H01J 516
Patent
active
058411305
ABSTRACT:
A system for monitoring strain in concrete structures comprises a frame for mbedding in the structure with first and second ends of the frame proximate an edge of the structure, a fiber-optic cable mounted on the frame and extending substantially from the frame first end to the frame second end, a light source in communication with a first end of the cable, a light detector in communication with a second end of the cable, and an information processor in communication with the light detector. The cable is adapted to propagate light from the source to the detector, and the processor is adapted to identify strain in the structure from data generated by the detector.
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patent: 5374821 (1994-12-01), Muhs et al.
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patent: 5381493 (1995-01-01), Egalon et al.
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patent: 5513913 (1996-05-01), Ball et al.
Ahmad Falih H.
Bombich Anthony A.
Evans James A.
Fehl Barry D.
Smith Lonnie L.
Le Que
Marsh Luther A.
The United States of America as represented by the Secretary of
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