Diagnostic system for monitoring structural health conditions
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United States of America Patent
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Oct 16, 2007
Grant Date -
Nov 30, 2006
app pub date -
Apr 3, 2006
filing date -
Sep 22, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Interrogation systems for monitoring structural health conditions. An interrogation system includes at least one wave generator for generating a wave signal and optical fiber sensors applied to a structure. The interrogation system also includes at least one electronic module for generating an input sensor signal and sending the input sensor signal to the optical fiber sensors. Each optical fiber sensor impresses the wave signal onto the input sensor signal to generate an output sensor signal that is frequency shifted from the input sensor signal. The electronic module generates an information signal in response to the output sensor signal. The interrogation system also includes a signal processing unit and a relay switch array module that has relay switches. Each relay switch relays the information signal to the signal processing unit and the signal processing unit generates a digital sensor signal that is subsequently sent to a computer.
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