Fluorescence based optical fibre fire alarm system [for aeroengine application]

Author

Sun, T. ; Grattan, K.T.V. ; Sun, W.M.

Author_Institution

Sch. of Eng., City Univ., London, UK

fYear

2002

Firstpage

471

Abstract

A fluorescence-based optical fibre fire alarm system, which offers the advantages of light weight and relatively low cost, has been discussed to address the specifications required for aeroengine fire detection. A temperature excursion as low as 50-100/spl deg/C has been detected and current spatial resolution achieved is /spl sim/20 cm. Lengths of 1.2 m of Er & Tm doped fibres have been tested and with a higher power laser diode in the future work an extension of the sensing length to the required maximum of 3 m seems possible. The referential method discussed has proved to be applicable under various testing conditions.

Keywords

aerospace engines; aircraft control; aircraft instrumentation; alarm systems; fibre optic sensors; fires; fluorescence; temperature sensors; aeroengine fire detection; differential method; fluorescence decay signal; fluorescence lifetime; fluorescence-based system; hot spot; light weight; optical fibre fire alarm system; referential method; relatively low cost; spatial resolution; temperature excursion detection; temperature sensors; varying background; Alarm systems; Costs; Diode lasers; Erbium; Fires; Fluorescence; Optical fiber testing; Optical fibers; Spatial resolution; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th

Conference_Location

Portland, OR, USA

Print_ISBN

0-7803-7289-1

Type

conf

DOI

10.1109/OFS.2002.1000694

Filename

1000694