System and method for structural monitoring using optical imagin

Details System and method for structural monitoring using optical imagin System and method for structural monitoring using optical imagin

1991-02-26

1993-01-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73800, H01J 516

Patent

active

051824493

ABSTRACT:
A sensor system for a structure includes at least one laser diode or LED light source coupled to a bundle of optical fibers, optical sensors integral with the structure and coupled to optical fibers wherein the sensors are adapted for modulating the intensity, frequency and phase of the optical signals in response to strain, temperature, pressure or another stimulus, a CCD video camera for collecting the modulated optical signals from optical fibers which are formed into a bundle representing a distinct structural area, and either a video monitor for visually evaluating the sensor data or a digital computer for image processing of the data.

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Zavodskaya Laboratoriya (U.S.S.R.), translated in Industrial Lab, vol. 36, No. 1, published Jan. 1970.

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