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Light wave conductor-bending sensor with sliding rails for monitoring bridge structures or the like

  • US 4,972,073 A
  • Filed: 01/23/1990
  • Issued: 11/20/1990
  • Est. Priority Date: 02/02/1989
  • Status: Expired due to Term
First Claim
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1. A measuring device with a light wave conductor bending sensor for monitoring bridge structures, comprising a light emitter and a light receiver;

  • a multi-mode light wave conductor arranged to extend along a structural part and having two ends connected with said light emitter and said light receiver, respectively;

    an elongated plate having a lower side arranged to be placed on and connected with the structural part and also having an upper side provided with a longitudinal groove;

    two sliding rails arranged in said longitudinal groove and having outer ends fixed to said plate and inner ends spaced from one another to form an intermediate space and movable relative to said plate, said light wave conductor being fixed with one of said sliding rails, then extends through said intermediate space and forms a freely movable curve, and then extends along and is fixed to the other of said movable rails.

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