Satellite unit identification system

Details Satellite unit identification system Satellite unit identification system

1994-05-27

1996-03-19

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340531, 340555, 455 671, 359145, 359172, G08B 108

Patent

active

055006396

ABSTRACT:
In a fire, smoke or intruder detection system including a master unit and satellite units with remote sensors, the satellite units send alarm transmissions to the master unit over a radio frequency channel. In order to register satellite units with the master unit each satellite unit is provided with a unique identification code and, after suitable triggering, sends a signal including this code to the master unit over a line-of-sight communications channel. The master unit registers satellite unit identification codes received on the line-of-sight channel and disregards radio frequency transmissions if they include unregistered satellite unit identification codes.

REFERENCES:
patent: 3513443 (1970-05-01), Andersen
patent: 4020477 (1977-04-01), Brunius
patent: 4622540 (1986-11-01), Guscott et al.
patent: 4630035 (1986-12-01), Stahl et al.
patent: 4692742 (1987-09-01), Raizen et al.
patent: 4737770 (1988-04-01), Brunius et al.
patent: 4855713 (1989-08-01), Holland

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