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Method and apparatus for detecting railway activity

  • US 5,713,540 A
  • Filed: 06/26/1996
  • Issued: 02/03/1998
  • Est. Priority Date: 06/26/1996
  • Status: Expired due to Term
First Claim
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1. A railway warning system for reporting activities and conditions, comprising:

  • an acoustic sensor circuit coupled to and in fixed stationary relation to a railway for passively detecting sound waves resulting from physical vibrations thereon occurring on the railway due to a disturbance located away from the sensor;

    an acoustic analyzer unit coupled to said acoustic sensor circuit for analyzing said detected sound waves to identify the activities on and conditions of the railway, and for generating an alarm indicating a hazardous condition on the railway.

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