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PASSIVE MICROWAVE SYSTEM AND METHOD FOR PROTECTING A STRUCTURE FROM FIRE THREATS

  • US 20110155397A1
  • Filed: 01/06/2011
  • Published: 06/30/2011
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. An integrated fire detection, protection and suppression system for a glass structure comprisinga plurality of passive microwave receivers comprising at least one directional receiver located for receiving passive microwave radiation emitted in an area to be protected, the passive microwave receivers operating within a range of frequencies not being used for active radiation in the area to be protected and for outputting an electrical signal proportional to a passively received level of microwave radiation over time;

  • a signal processor for receiving the electrical signal output of the plurality of passive microwave receivers and for comparing the received electrical signal output with a reference level and with characteristic event signature data and outputting a signal indicating a significant fire event;

    a memory connected to the signal processor for storing characteristic thermal event signature data for one of a fuel fire, a motor, an electrical fire and a human being;

    an exterior sprinkler system for protecting the glass structure, the data processor actuating the sprinkler system for protecting the glass structure responsive to the significant fire event signal output.

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