Method for detecting a fire condition

Details Method for detecting a fire condition Method for detecting a fire condition

1993-09-02

1994-12-13

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G08B 1712, G01J 336

Patent

active

053731590

ABSTRACT:
A method of detecting a fire condition in a monitored region includes concurrently monitoring the region by a first sensor sensitive to radiation within a first bandwidth which includes the CO.sub.2 emission band, by a second sensor sensitive to radiation within a second bandwidth which includes wavelengths mainly lower than the CO.sub.2 emission band, and by a third sensor sensitive to the radiation within a third bandwidth which includes wavelengths higher than the CO.sub.2 emission band. The measurements of all these sensors are utilized in determining the presence or absence of the fire condition in the monitored region.

REFERENCES:
patent: 4639598 (1987-01-01), Kern et al.
patent: 4785292 (1988-11-01), Kern et al.
patent: 5153563 (1992-10-01), Goto et al.

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