Dong, H; Zhao, W; Sun, T; Grattan, KTV; Al-Shamma'a, AI; Wei, C; Mulrooney, J; Clifford, J; Fitzpatrick, C; Lewis, E; Degner, M; Ewald, H; Lochmann, SI; Bramann, G; Borla, EM; Faraldi, P; Pidria, M

2006

July

Measurement Science & Technology

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

Published

()

optical fibre sensors temperature measurements digital signal processing FIBER

17

7

2010

2014

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 degrees C, and potentially higher.

0957-0233

10.1088/0957-0233/17/7/046