Fire detector with electronic frequency analysis

Details Fire detector with electronic frequency analysis Fire detector with electronic frequency analysis

2005-08-09

2005-08-09

Epps, Georgia (Department: 2873)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S342000

Reexamination Certificate

active

06927394

ABSTRACT:
A process and system for flame detection includes a microprocessor-controlled detector with a first sensor for sensing temporal energy in a first optical frequency range, and a second sensor for sensing temporal energy in a second optical frequency range. The temporal energy sensed in the respective first and second optical frequency ranges are transformed into respective first and second spectra of frequency components. A compensated spectrum of frequency components is generated by performing a frequency bin subtraction of the first and second spectra of frequency components. The compensated spectrum represents the energy emitted from the environment with energy emitted from false alarm sources. An average amplitude and centroid of the compensated spectrum are obtained and used to determine if a monitored phenomenon represents an unwanted fire situation. The compensated spectrum can be compared to reference compensated spectra of frequency components generated from known unwanted fire sources and known false alarm sources.

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