Vibration-insensitive temperature sensing system based on fluorescence decay and using a digital processing approach

A fluorescence-based temperature sensor system using a digital signal processing approach has been developed and evaluated in operation on a working automotive engine. The signal processing approach, using the least-squares method, makes the system relatively insensitive to intensity variations in t...

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Bibliographic Details
Published in:Measurement science & technology 2006-07, Vol.17 (7), p.2010-2014
Main Authors: Dong, H, Zhao, W, Sun, T, Grattan, K T V, Al-Shamma'a, A I, Wei, C, Mulrooney, J, Clifford, J, Fitzpatrick, C, Lewis, E, Degner, M, Ewald, H, Lochmann, S I, Bramann, G, Merlone Borla, E, Faraldi, P, Pidria, M
Format: Article
Language:English
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Summary:A fluorescence-based temperature sensor system using a digital signal processing approach has been developed and evaluated in operation on a working automotive engine. The signal processing approach, using the least-squares method, makes the system relatively insensitive to intensity variations in the probe and thus provides more precise measurements when compared to a previous system designed using analogue phase-locked detection. Experiments carried out to determine the emission temperatures of a running car engine have demonstrated the effectiveness of the sensor system in monitoring exhaust temperatures up to 250 deg C, and potentially higher.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/17/7/046