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| Titre: | A Simple fiber optic temperature sensor for fire detection in hazardous environment based on differential time rise/decay phosphorescence response |
| Auteur(s): | Fouzar, Samia
Bulgaria, Plovdiv
Kostova, Irena
Dimitrova, Todorka L.
Benmounah, Abdelbaki |
| Mots-clés: | Fiber optic sensor
Fire prevention
Phosphorescence
Rise/decay responses
Strontium aluminates
temperature sensing |
| Date de publication: | 2022 |
| Editeur: | IEEE |
| Collection/Numéro: | Transactions on instrumentation and measurement, vol. 71; |
| Résumé: | — In the present article, we report the development
of a simple temperature sensor based on the difference in the
temperature dependences of the rise and decay time and the
intensity responses of Eu2+, Dy3+-doped strontium aluminates.
A 374-nm pulsed LED was used as a UV source in combination
with a lead-in and -out optical fiber to excite the sample and
capture the phosphorescence. We show that because of the
power law rise and decay time responses, the differential signals
measured at earlier instants exhibit the highest sensitivities
to temperature over the range from about 5 ◦C to 95 ◦C.
Normalized differential signals are characterized by a wide range
of linear responses to temperature changes, sensitivity of up to
≈−1.89%/◦C, and a relative error of less than 0.5%. Application
to fire prevention is discussed and argumented |
| URI/URL: | https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=19
http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/10410 |
| ISSN: | 1557-9662 |
| Collection(s) : | Publications Internationales
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