Frequency-domain fluorescence based fiber optic fire alarm system
Identifieur interne : 000D55 ( Pascal/Checkpoint ); précédent : 000D54; suivant : 000D56Frequency-domain fluorescence based fiber optic fire alarm system
Auteurs : T. Sun [Singapour] ; Z. Y. Zhang [Royaume-Uni] ; K. T. V. Grattan [Royaume-Uni]Source :
- Review of scientific instruments [ 0034-6748 ] ; 2001-04.
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Abstract
Erbium and thulium doped fibers have been investigated in this work, for the first time, to determine their potential in fire or high temperature alarm applications based on the use of fluorescence decay in the frequency domain. Two configurations of the sensing system have been tested and compared, with particular reference to their minimum spatial resolution and location discrimination characteristics. The initial results show that temperature excursions of 125°C within 10 cm along a length of a 1.2 m sensing loop can be determined within a period of some tens of seconds, which is adequate for the sensor purpose, and work is continuing to increase the system's sensitivity. © 2001 American Institute of Physics.
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Pascal:01-0146461Le document en format XML
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<front><div type="abstract" xml:lang="en">Erbium and thulium doped fibers have been investigated in this work, for the first time, to determine their potential in fire or high temperature alarm applications based on the use of fluorescence decay in the frequency domain. Two configurations of the sensing system have been tested and compared, with particular reference to their minimum spatial resolution and location discrimination characteristics. The initial results show that temperature excursions of 125°C within 10 cm along a length of a 1.2 m sensing loop can be determined within a period of some tens of seconds, which is adequate for the sensor purpose, and work is continuing to increase the system's sensitivity. © 2001 American Institute of Physics.</div>
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