Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-11-04
1995-02-21
Peng, John K.
Communications: electrical
Condition responsive indicating system
Specific condition
73862041, 338 2, G08B 1300
Patent
active
053920279
ABSTRACT:
A taut wire perimeter fence intrusion detection system is disclosed. The taut wire deflection sensors in the system each include a flexible housing into which is disposed a full resistance bridge having strain gages for each leg. Opposing strain gages in the bridge circuit have predominant directions in common directions. The strain gages are formed directly onto a printed circuit board. An amplifier circuit is also mounted onto the circuit board, for amplifying the differential bridge voltage from the bridge. The taut wire is connected to the housing, for example by way of a slotted bolt and nut, so that horizontal deflection of the taut wire creates strain on the circuit board which is sensed by the strain gage bridge, amplified by the amplifier, and communicated to a data processing system which generates the appropriate alarm condition.
REFERENCES:
patent: 3949822 (1976-04-01), English et al.
patent: 4200856 (1980-04-01), Gilcher
patent: 4385525 (1983-05-01), Phillips et al.
patent: 4736194 (1988-04-01), Sticksel
patent: 4804052 (1989-02-01), Griffen
patent: 4817022 (1989-03-01), Jornod et al.
patent: 4980913 (1990-12-01), Skret
patent: 5001755 (1991-03-01), Skret
patent: 5035148 (1991-07-01), Okada
patent: 5135062 (1992-08-01), Lockery et al.
Fink, et al., ed., Electronics Engineers' Handbook, 2d ed. (McGraw-Hill, 1982) pp. 17-23 through 17-26.
Holman, Experimental Methods for Engineers, 3d ed. (McGraw-Hill), pp. 110-113, date unknown.
PFT ME2 (Micro Engineering II), pp. 16, 18, 20., date unknown.
The Pressure Strain and Force Handbook, (Omega), p. E-3, date unknown.
"VTW-300 Electronic Taut Wire Fence Installation and Maintenace Manual" (Vindicator Coroporation, Aug. 1989).
Brunot Frank A.
Coppo Michael P.
Motsinger James V.
Detek Security Systems, Inc.
Mullen Jr. Thomas J.
Peng John K.
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