Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-09-22
1997-11-25
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340426, 340945, G08B 1320
Patent
active
056916973
ABSTRACT:
A security system includes a pressure sensing circuit for generating an electrical signal in response to changes in pressure and a signal processing circuit, connected to receive the electrical signal, for determining whether the electrical signal represents an intrusion pattern. A pressure sensing circuit generates an electrical signal in response to changes in pressure and a trigger circuit for determining whether an intrusion has occurred by determining whether a peak of the electrical signal has an amplitude that exceeds a floating amplitude threshold, wherein the floating amplitude threshold compensates for ambient noise in the enclosed area. A monitor mode measures intrusion data in a specific enclosed area and determines security system thresholds in accordance with the measured intrusion data.
REFERENCES:
patent: 4538140 (1985-08-01), Prestel
patent: 4647913 (1987-03-01), Pantus
patent: 4797657 (1989-01-01), Vorzimmer et al.
patent: 4920332 (1990-04-01), Philippe
patent: 4933668 (1990-06-01), Oyer et al.
patent: 5021766 (1991-06-01), Genahr et al.
patent: 5063371 (1991-11-01), Oyer et al.
patent: 5185593 (1993-02-01), DuRand, III et al.
patent: 5376919 (1994-12-01), Rickman
Fenwal Safety Systems Proposal SS-694, dated Jun. 27, 1994.
March Industries Brochure.
Quorum International, Ltd. Security Monitor.
Quorum Product Line Literature 1994.
Carvalho Carlos E.
Hallee Donald O.
Osborne John P.
Kidde Technologies, Inc.
Swann Glen
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