Communications: electrical – Continuously variable indicating – With meter reading
Patent
1988-07-27
1989-08-15
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
340522, 340508, 340541, 34082531, 34082532, 34082534, 901 46, 901 49, 901 50, G08B 1316, H04B 900, B25J 1900
Patent
active
048579122
ABSTRACT:
An intelligent security assessment system includes a multiplicity of sens for detecting intrusion into an area. Each of the sensors operates on a different principle to detect intrusion. For example, sound, vibration, infrared, microwave and light level sensors are used. A computing system receives the outputs of each of the sensors and is programmed to provide an output based upon an algorithm that minimizes the likelihood of a false indication of intrusion by the intrusion sensors. Each sensor has an on and an off state and the computing system assigns a weighting factor for each sensor that is in the on state. The computing system sums the weighting factors and compares this sum to a reference and then provides a further output when the sum exceeds the reference. This computing system output is utilized to activate an additional intrusion detector such as an ultrasonic detection system and also to activate a video surveillance camera for observance of the area where the intrusion is indicated.
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patent: 3988570 (1976-10-01), Murphy et al.
patent: 4081669 (1978-03-01), Klingman, III
patent: 4401976 (1983-08-01), Stadelmayr
patent: 4622538 (1986-11-01), Whynacht et al.
patent: 4652202 (1987-03-01), Ross et al.
patent: 4772875 (1988-09-01), Maddox et al.
"Facility Instrusion Detection System", Ben Barker, 5/14/80, Abstract.
Everett, Jr. Hobart R.
Gilbreath Gary A.
Fendelman Harvey
Keough Thomas G.
Pudpud E. O.
The United States of America as represented by the Secretary of
Yusko Donald J.
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