Fire and explosion detection

Details Fire and explosion detection Fire and explosion detection

1980-07-07

1983-02-08

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250340, 250349, G01J 100

Patent

active

043731368

ABSTRACT:
A system for discriminating between radiation produced by a source of fire or explosion to be detected and that produced by a source not to be detected, comprises two radiation detectors 10, 12 respectively responsive to the intensity of radiation in different and spaced apart narrow wavelength bands. A rate of rise unit 22 and a threshold unit 24 responsive to detector 12 produce signals of a first binary type when the rate of, and the value of, the radiation intensity exceed predetermined values. A ratio unit 16 measures the ratio of the intensities of the radiation received by the two detectors and produces a signal of the opposite binary type when the ratio indicates that the source of radiation is a fire or explosion to which the system is not to respond. An AND gate 36 produces a fire and explosion indicating output only when the signals of the first type exist in the absence of the signal of the opposite type.

REFERENCES:
patent: 3825754 (1974-07-01), Cinzori et al.
patent: 4101767 (1978-07-01), Lennington et al.
patent: 4206454 (1980-06-01), Schapira et al.
patent: 4220857 (1980-09-01), Bright
patent: 4296324 (1981-10-01), Kern et al.

Affiliated with

Also associated with

Rating

Fire and explosion detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fire and explosion detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire and explosion detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-51127