Fiber optic based fire detection and tracking system

Details Fiber optic based fire detection and tracking system Fiber optic based fire detection and tracking system

1990-12-12

1992-09-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340577, H01J 516

Patent

active

051441250

ABSTRACT:
An apparatus and method is disclosed for a fiber optic based fire detection and tracking system. An optical time domain reflectometer (OTDR) interrogates at least one optical fiber with a melting point defining a threshold temperature for fire detection. The OTDR measure the time of flight of a light pulse originating at each optical fiber input end and reflected back to determine the linear position of interruptions along an optical fiber which allows for fire detection and location.

REFERENCES:
patent: 3981592 (1976-09-01), Williams
patent: 4379289 (1983-04-01), Peek
patent: 4450434 (1984-05-01), Nielsen et al.
patent: 4896141 (1990-01-01), Farquhar et al.
patent: 5015842 (1991-05-01), Fradenburgh et al.

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