Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-07-11
1999-06-08
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
250236, 250334, 250347, 340552, 340556, 356 309, 356 407, 356 501, G08B 13181
Patent
active
059107677
ABSTRACT:
A light beam, preferably from a laser, is reflected from a target, which is a potential intruder. The time period required for the beam to return to a light detector, as well as the intensity of the reflected light, is recorded. The system includes a computer and software for analyzing the measurements of distance and intensity of reflected light. The algorithm for detecting the presence of an intruder is based on changes in the measured distance and/or intensity of reflected light from initial measurements made during a "learning" period. The system tracks targets using data collected in consecutive searches of the area to be protected. Preferably, an alarm is sounded and/or a video camera is slaved to the system.
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Brochure for "CYCLOPS" by Intelsec Systems Ltd., 2 Meadway Ct., Meadway Technology Park, Rutherford Close, Stevenage Herts, SG1 EF, G.B.
Friedman Mark M.
Laser Guard
Swann Glen
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