Intrusion barrier and detection apparatus

Details Intrusion barrier and detection apparatus Intrusion barrier and detection apparatus

1983-04-19

1986-02-18

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

256 12, 340552, 340564, 343 5PD, G08B 1300

Patent

active

045715785

ABSTRACT:
A ported coaxial cable is positioned within a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is confined within the tubular volume of the coil. Variations in the reflected energy caused by physical disturbances of the coil are processed by detection system signal processing equipment to determine the incidence and location of intrusion events.

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patent: 4525701 (1985-06-01), Leih
Woode et al., "Perimeter Protection with Microwaves", Microwave Systems News, vol. 6, No. 4, pp. 113-114, 117-118, Sep. 1976.

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