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Fire detection system

  • US 5,153,722 A
  • Filed: 01/14/1991
  • Issued: 10/06/1992
  • Est. Priority Date: 01/14/1991
  • Status: Expired due to Fees
First Claim
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1. A fire detection system comprising:

  • detector means for detecting the presence of energy within the spectrum of a fire and producing an analysis initiating signal;

    video means for producing color information video images of an observed area including objects therein;

    object means responsive to said video images for determining the presence of bright objects in the observed area;

    analyzing means responsive to said analysis initiating signal for determining that at least one bright object is a fire if it exhibits ragged edges, edge flicker, growth, stationarity, spectrum corresponding to a known fire spectrum, and spectral changes and producing an analysis output signal indicative of the occurrence of a fire; and

    threshold means analysis responsive to said output signal for determining the size of said bright object causing said analysis output signal and for causing a fire response when bright object determined to be a fire by said analyzing means exceeds a predetermined area.

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