Presence-detecting system

Details Presence-detecting system Presence-detecting system

1994-11-01

1995-10-17

Swarthout, Brent

Communications: electrical

Condition responsive indicating system

With particular coupling link

34031001, 34031008, 340565, 340573, G08B 108

Patent

active

054594502

ABSTRACT:
A system for detecting presences has modules or devices equipped with electronic circuits for the transmission and reception of binary messages by carrier current passing through the normal domestic electric network. The devices, connected to the electric network by an incorporated plug, are in addition equipped with actuators for the control (command) of the electric power equipment in order to intercommunicate at an equivalent rank level. This system consisting of an ensemble of several devices of the above-mentioned kind associated with devices having presence-detecting characteristics is capable of carrying out the function of an anti-intrusion alarm installation.

REFERENCES:
patent: 3633199 (1972-01-01), Curry
patent: 3805265 (1974-04-01), Lester
patent: 4660023 (1987-04-01), Thern et al.
patent: 4807255 (1989-02-01), Idland
patent: 4812821 (1987-03-01), Santy et al.
patent: 5157383 (1992-10-01), Fisher

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