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Equipment for detecting the movement of a preceding vehicle and giving warning

  • US 5,153,559 A
  • Filed: 06/11/1991
  • Issued: 10/06/1992
  • Est. Priority Date: 06/27/1990
  • Status: Expired due to Term
First Claim
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1. An equipment for detecting the movement of a preceding vehicle and giving warning, said equipment comprising a distance measuring sensor for measuring the distance between the vehicle and said preceding vehicle when the vehicle is at a stop, a memory means for memorizing a value measured by said distance measuring sensor, a measurement command means for making said distance measuring sensor repeatedly measure the distance between the vehicle and said preceding vehicle, a comparison means for comparing said memorized value measured by said distance measuring sensor with values subsequently measured by said distance measuring sensor, and warning means for giving warning when any of said values subsequently measured is different from said memorized value.

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