Intruder detecting security system

Details Intruder detecting security system Intruder detecting security system

G - Physics

08

B

349/30

G08B 13/00 (2006.01) G01S 11/14 (2006.01) G01V 1/20 (2006.01) G08B 13/16 (2006.01)

Patent

CA 1054251

INTRUDER DETECTING SECURITY SYSTEM Abstract of the Disclosure This electronic perimeter intruder detecting security system is arranged for measuring the differences of propagation times and/or velocities of a plurality of different seismic-like waves simultaneously set up by an intruder at a plurality of sensor stations and for calculating the location, velocity, and frequently for identifying the type of intruder. Provisions are disclosed for screening false alarms or waves emanating from without a guarded zone and for ignoring waves from sources not of interest in guarding that zone. -1-

263825

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