Fire monitoring system

Details Fire monitoring system Fire monitoring system

1987-05-01

1988-11-15

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340511, 340506, 340521, G08B 2600, G08B 2900

Patent

active

047852844

ABSTRACT:
A fire monitoring system used in a fire alarm arrangement includes a fire receiver and a plurality of fire sensors connected to signal/power supply zone lines from the fire receiver to a plurality of fire warning zones, the sensors for short-circuiting the respective zone lines with a low impedance in case of a fire. An analog detector having an address is located at a given warning zone among the fire warning zones. The analog detector is connected to the corresponding signal/power supply zone line through an analog sensor controller having an operation circuit for calculating an analog signal obtained by address polling from the analog detector.

REFERENCES:
patent: 4423410 (1983-12-01), Galvin et al.
patent: 4523183 (1985-06-01), Frick
patent: 4528610 (1985-07-01), Payne
patent: 4581604 (1986-04-01), Kimura et al.
patent: 4658243 (1987-04-01), Kimura et al.

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