Radiant energy – Photocells; circuits and apparatus – Flame light source
Patent
1982-12-02
1985-08-06
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Flame light source
250227, 340578, H05R 3300
Patent
active
045338345
ABSTRACT:
A fire detection system using optical fibers to transmit flame signals from a plurality of remote monitoring stations to a central detection and analysis station, the invention comprises a network of optical fibers which connect the monitoring stations to the central detection station for the purpose of transmitting incident analog optical, infrared and ultraviolet spectra to the central station for detection of fire conditions. The central detection and analysis station preferably includes a rotary scanner which scans each of the optical fibers, light from the fibers being dispersed by a prism associated with the scanner to allow detection of the various spectral components of the dispersed light by light sensitive semiconductors. The detected spectral components are then compared to known fire signal signatures which include flicker rate and spectral content information.
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Gatto J.
Hollis Darrell E.
Nelms David C.
The United States of America as represented by the Secretary of
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