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Sensors 2014, 14(10), 18268-18285; doi:10.3390/s141018268

An Intrusion Detection System for the Protection of Railway Assets Using Fiber Bragg Grating Sensors

Optoelectronic Division-Department of Engineering, University of Sannio, Corso Garibaldi 107, Benevento 82100, Italy
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Received: 23 June 2014 / Revised: 4 September 2014 / Accepted: 22 September 2014 / Published: 29 September 2014
(This article belongs to the Section Physical Sensors)
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Abstract

We demonstrate the ability of Fiber Bragg Gratings (FBGs) sensors to protect large areas from unauthorized activities in railway scenarios such as stations or tunnels. We report on the technological strategy adopted to protect a specific depot, representative of a common scenario for security applications in the railway environment. One of the concerns in the protection of a railway area centers on the presence of rail-tracks, which cannot be obstructed with physical barriers. We propose an integrated optical fiber system composed of FBG strain sensors that can detect human intrusion for protection of the perimeter combined with FBG accelerometer sensors for protection of rail-track access. Several trials were carried out in indoor and outdoor environments. The results demonstrate that FBG strain sensors bonded under a ribbed rubber mat enable the detection of intruder break-in via the pressure induced on the mat, whereas the FBG accelerometers installed under the rails enable the detection of intruders walking close to the railroad tracks via the acoustic surface waves generated by footsteps. Based on a single enabling technology, this integrated system represents a valuable intrusion detection system for railway security and could be integrated with other sensing functionalities in the railway field using fiber optic technology. View Full-Text
Keywords: intrusion detection; optical fiber; sensors; Fiber Bragg Grating; security; railway intrusion detection; optical fiber; sensors; Fiber Bragg Grating; security; railway
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Catalano, A.; Bruno, F.A.; Pisco, M.; Cutolo, A.; Cusano, A. An Intrusion Detection System for the Protection of Railway Assets Using Fiber Bragg Grating Sensors. Sensors 2014, 14, 18268-18285.

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