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PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping and P. Iványi
Railway Traffic Monitoring by Use of Distributed Optical Fiber Sensors
A. Minardo1, G. Porcaro2, D. Giannetta3, R. Bernini4 and L. Zeni1,4
1Department of Industrial and Information Engineering
A. Minardo, G. Porcaro, D. Giannetta, R. Bernini, L. Zeni, "Railway Traffic Monitoring by Use of Distributed Optical Fiber Sensors", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 28, 2013. doi:10.4203/ccp.102.28
Keywords: distributed optical fiber sensors, structural health monitoring.
In this work, we report on the application of a distributed optical fiber sensor based on Brillouin scattering for train identification and dynamic load measurement. In our sensor, the weight of a passing train causes strain in the rail, which is transferred to the attached fiber. The test was carried out in the Peschici-San Severo regional railway line operated by Ferrovie del Gargano, during its normal operation. The rail sector selected for real-time monitoring tests was a continuous welded rail (CWR) situated near the San Menaio station. A single-mode optical fiber sensor was attached along a rail length of about 60 meters. The strain associated to the train passage was acquired along the monitored rail length at a 31 Hz acquisition rate and a 1 meter spatial resolution. The data acquired by the sensor demonstrates its capability in retrieving useful information in railway traffic monitoring, such as train identification, axle counting, speed detection, and dynamic load calculation.
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