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Proceedings Paper

A temperature compensated fibre Bragg grating (FBG)-based sensor system for condition monitoring of electrified railway pantograph
Author(s): Ye Chen; Miodrag Vidakovic; Matthias Fabian; Martin Swift; Lee Brun; Tong Sun; Kenneth T. V. Grattan
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Paper Abstract

This paper presents the results obtained from fibre Bragg grating (FBG) sensors integrated into a railway current-collecting pantograph for accurate measurement of contact force and contact location when it is subjected to various temperature conditions. The temperature change of the pantograph is simulated, at the industrial laboratory of Brecknell Willis in the UK, by changing the DC current applied to pantograph from 0 to 1500 A. This test is primarily designed to verify the effectiveness of the temperature compensation mechanism built in the FBG sensor design. For this verification, 3 thermocouples co-located with the FBG sensor packages are used to measure the temperature change seen from 25 °C to 55 °C. The tests were repeated several times and the sensor system has shown its temperatureindependence, confirming that the intrinsic cross-sensitivity of FBGs to temperature variation for strain measurement has been fully compensated through the use of this innovative sensor design and data processing.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236T (23 April 2017); doi: 10.1117/12.2263998
Show Author Affiliations
Ye Chen, City, Univ. of London (United Kingdom)
Miodrag Vidakovic, City, Univ. of London (United Kingdom)
Matthias Fabian, City, Univ. of London (United Kingdom)
Martin Swift, Brecknell Willis (United Kingdom)
Lee Brun, Brecknell Willis (United Kingdom)
Tong Sun, City Univ. of London (United Kingdom)
Kenneth T. V. Grattan, City Univ. of London (United Kingdom)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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