| 摘要 |
<p>Fire and explosion detection system (10) for detecting radiation (16) emitted from a fire or explosion (18), wherein long wavelength radiant energy responsive signals are processed in one (14) channel and compared to short wavelength radiant energy responsive signals which are processed in a second channel (12). At least one of the channels is responsive to a wavelength where at least one of the combustion products of the fire or explosion exhibits a strong absorption band. When the signals from the two channels are coincident at AND gate (28) in response to a fire or explosion of a predetermined threshold magnitude, an output fire suppression signal (38) is generated. </p> |
