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DAMAGE DETECTION SYSTEM AND DAMAGE DETECTION METHOD

  • US 20190170656A1
  • Filed: 01/25/2019
  • Published: 06/06/2019
  • Est. Priority Date: 09/07/2016
  • Status: Active Grant
First Claim
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1. A damage detection system comprising:

  • optical paths that propagate lights in at least three different directions, the optical paths having at least two paths per one direction, the optical paths being disposed so that not less than three out of the optical paths do not intersect with each other at one position;

    a light source that makes the lights incident on one ends of the optical paths respectively;

    a photodetector that detects the lights output from other ends of the optical paths; and

    a signal processing circuitry that specifies at least one location of damage based on optical detection signals detected by the photodetector, an area being specified as the at least one location of the damage when each intensity of at least three lights output from at least three optical paths propagating the at least three lights in the at least three different directions has decreased, the area including each portion of the at least three optical paths, locations of damage corresponding to combinations of the at least three optical paths being specified when the combinations of the at least three optical paths exist.

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