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Self-Operated Perimeter Intrusion Detection System

  • US 20080157965A1
  • Filed: 01/01/2007
  • Published: 07/03/2008
  • Est. Priority Date: 01/01/2007
  • Status: Active Grant
First Claim
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15. A method for operating an assembly of an anti-intruder system which sets up an alarm when being breached comprising the steps of:

  • (a) providing at least a first and a second array having each a multiplicity of infra-red optical transceivers, each transceiver includes a light source and a light detector, the arrays are mounted oppositely and facing, each other in a master/slave configuration, wherein the light detector of each transceiver of said at least first and second arrays is illuminated by more than a single light source of said transceiver of said opposite array,(b) adjusting intensity of the light emitted by said light source of said transceiver of said master array in response to a level of illumination received by said light detector of said transceiver of said slave array and(c) identifying an origin light source among said light sources of said master array s and a destination light detector among said light detectors of said slave array of a light beam which was blocked by an intruding object.

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