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FIBER OPTIC TRACK CIRCUIT

  • US 20060202860A1
  • Filed: 03/10/2006
  • Published: 09/14/2006
  • Est. Priority Date: 03/10/2005
  • Status: Abandoned Application
First Claim
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1. A fiber optic track circuit, comprising:

  • a light source, a first fiber Bragg grating (FBG) unit, and a first receiver all connected by optical fiber;

    said light source to provide a light beam and said optical fiber to convey said light beam to first FBG unit;

    said first FBG unit being mountable on a first portion of a railway system directly effected by the weight of a passing train;

    said first FBG unit to receive said light beam and to provide a first reflected beam to said first receiver;

    said first receiver to provide a first receiver signal based on said first reflected beam; and

    a processor to determine based on pre-set criteria and said first receiver signal whether to communicate and what to communicate as a track circuit signal to an external device.

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