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System and method for detecting an intruder

  • US 5,980,123 A
  • Filed: 09/29/1998
  • Issued: 11/09/1999
  • Est. Priority Date: 01/08/1996
  • Status: Expired due to Fees
First Claim
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1. A system for detecting at least one intruder proximate to an area to be guarded, said area having a perimeter, the system comprising:

  • a. a plurality of detection units, each of which includes at least one passive infra-red sensor having a first field of view external to and directed generally along said perimeter, said plurality of detection units, being positioned within the area to be guarded, creating a pre-emptive detection zone external to said perimeter for detecting said at least one intruder before said at least one intruder reaches said perimeter; and

    b. at least one camera for viewing and recording said at least one intruder within a second field of view, said second field of view being wider than said first field of view.

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