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Optical Fiber Sensors to Measure Collector Performance in the Pantograph-Catenary Interaction

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8 Author(s)
Boffi, P. ; Dept. of Electron. & Inf., Politec. di Milano, Milan ; Cattaneo, G. ; Amoriello, L. ; Barberis, A.
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Optical fiber sensors are proposed to detect static and dynamic collector strain for high-speed railway pantograph achieving electromagnetic immunity, nonelectrically conducting and small size. The implemented scheme based on a Michelson's interferometer with a 3 times 3 coupler allows local strain measurement insensitive to temperature variations with high reliability guaranteed by the employment of standard 1550 nm optical communications components. By a test rig to experimentally simulate the pantograph-catenary contact-force the sensor performance is compared with typical electric measurement.

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Sensors Journal, IEEE  (Volume:9 ,  Issue: 6 )