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Analog fire sensor

  • US 4,727,359 A
  • Filed: 03/28/1986
  • Issued: 02/23/1988
  • Est. Priority Date: 04/01/1985
  • Status: Expired due to Fees
First Claim
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1. A fire detection system for detecting a fire condition in any of a plurality of supervised regions, comprising:

  • a plurality of sensors respectively located in such regions and which produce analog data corresponding to a physical state relevant to a fire condition, each such sensor transmitting the analog data produced thereby in response to a polling signal received thereby only if such data exceeds a predetermined threshold level; and

    a central signal station adapted to poll said sensors sequentially and to receive the analog data transmitted thereby, and which makes a predictive calculation of the time remaining until outbreak of a fire on the basis of the analog data so received.

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