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Alarm sensor multiplexing

  • US 6,317,034 B1
  • Filed: 04/16/1999
  • Issued: 11/13/2001
  • Est. Priority Date: 05/22/1992
  • Status: Expired due to Term
First Claim
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1. A system for monitoring an area and sounding an alarm comprising:

  • a) at least one sensor having at least one pulse generator generating at least one analog pulse having a characteristic responsive to the nature of a threat sensed by said sensor; and

    b) said at least one sensor connected to a controller by a single wire and said controller sounding an alert upon receipt of said at least one pulse.

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