Bidirectional, interactive fire detection system

Details Bidirectional, interactive fire detection system Bidirectional, interactive fire detection system

1984-03-15

1985-03-26

Yusko, Donald J.

Communications: electrical

Condition responsive indicating system

With particular system function

340505, 34082536, H04Q 900, G08B 2900

Patent

active

045076529

ABSTRACT:
A Communication System useful for fire detection which transfers data/commands bidirectionally between a controller and connected transponders on a real time, interactive basis. This system makes possible accurate data recovery, whether a transponder has its output shorted, or although multiple transponders are replying and makes possible the remote determination and constant monitoring of transducer sensitivity, at the controller. The sensitivity can be adjusted remotely at the controller, and different transducers can have different thresholds simultaneously, which can be changed collectively or individually to different settings manually or automatically at the controller. The system transmits reference data for supervision of system accuracy. Compensation for long-term changes is provided for both transponders and transducers in this system.

REFERENCES:
patent: 3702474 (1972-11-01), Fink et al.
patent: 4006460 (1977-02-01), Hewitt et al.
patent: 4196417 (1980-04-01), Fasching et al.
patent: 4361833 (1982-11-01), Allgood
patent: 4385287 (1983-05-01), Eatwell
patent: 4404548 (1983-09-01), Muller et al.

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