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Fire alarm system

  • US 4,644,331 A
  • Filed: 06/18/1985
  • Issued: 02/17/1987
  • Est. Priority Date: 06/29/1984
  • Status: Expired due to Term
First Claim
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1. A fire alarm system comprising:

  • a detecting section for detecting and outputting an analog value corresponding to a change in a physical phenomenon of the ambient circumstances;

    sampling means for sampling at a predetermined period the analog detection signal outputted from said detecting section;

    data processing means for sequentially storing sampled data from said sampling means and for performing an averaging process of a plurality of said data stored as one group; and

    an alarm means for discriminating a fire on the basis of averaged data from said data processing means and then generating a fire alarm.

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