G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 13/22 (2006.01) G08B 29/18 (2006.01)
Patent
CA 2113026
ABSTRACT A multisensor intrusion detection system having greatly improved immunity to false alarms is disclosed. This system employs a first sensor for sensing an intrusion in a volume of space by a first physical phenomenon and a second sensor for detecting an intrusion in the volume of space by a second physical phenomenon different from the first physical phenomenon. The first sensor generates a first signal in response to the detection of an intrusion into the volume of space, and the second sensor generates a second signal in response to a detection of an intrusion. A microcontroller generates an alarm signal upon the occurrence of one first signal and one second signal within a first interval, the occurrence of another first signal within a subsequent second interval and the occurrence of another second signal within a third subsequent interval.
Hoseit Paul Michael
Whiting Gordon Stanley
C. & K. Systems Inc.
Smart & Biggar
LandOfFree
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