fiber grating; Optical fiber; railway; sensors; Fiber Bragg Grating Sensors; Fiber gratings; Railway; Railway track; Railway traffic monitoring; Sensor head; Single optical fibers; State of the art; Strain distributions; Wave length division multiplexed (WDM); Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] Fiber Bragg gratings (FBGs) have already proven their efficiency in axle counting when distributed along a railway track and bring advantages with respect to competing sensors. In this work, two relevant originalities are proposed to broaden the state-of-the-art solutions. First, the strain distribution in the rail cross-section is studied to identify the sensitivity, depending on the charge and the position. Secondly, the sensor head, composed of four wavelength-division-multiplexed FBGs in a single optical fiber, is deployed along the railway and interrogated by a small smart read-out device. Two FBGs are used for the train direction determination and the remaining two bring redundancy to reach safety integrity level (SIL) 4. The smart interrogator has been especially developed for this work and is composed of a vertical-cavity surface-emitting laser (VCSEL) and a photodiode driven by a high-speed microprocessor. The useful information (i.e. the number of counted axles) can be wireless communicated. On-field experiments confirm that this approach offers an easier installation process and a democratization of the technology.
Disciplines :
Computer science Mechanical engineering
Author, co-author :
Van esbeen, Bastien ; Université de Mons - UMONS > Recherche > Service ERC Unit - Advanced Photonic
Finet, Cyrille; Electromagnetism and Telecommunication Department, Advanced Photonic Sensors Unit, Université de Mons, Mons, Belgium
Vandebroeck, Robin; Electromagnetism and Telecommunication Department, Advanced Photonic Sensors Unit, Université de Mons, Mons, Belgium
Kinet, Damien ; Université de Mons - UMONS > Recherche > Service ERC Unit - Advanced Photonic ; B-SENS, Mons, Belgium
Boelen, Kévin; B-SENS, Mons, Belgium
Guyot, Corentin ; Université de Mons - UMONS > Faculté Polytechnique > Service d'Electromagnétisme et Télécommunications ; B-SENS, Mons, Belgium
Kouroussis, Georges ; Université de Mons - UMONS ; Theoretical Mechanics, Dynamics and Vibrations Department, Mons, Belgium
Smart railway traffic monitoring using fiber Bragg grating sensors
Publication date :
May 2022
Event name :
Optical Sensing and Detection VII
Event date :
09-05-2022 => 15-05-2022
Main work title :
Optical Sensing and Detection VII
Editor :
Berghmans, Francis
Publisher :
SPIE
ISBN/EAN :
978-1-5106-5154-8
Peer reviewed :
Peer reviewed
Research unit :
F703 - Mécanique rationnelle, Dynamique et Vibrations F108 - Electromagnétisme et Télécommunications
Research institute :
R300 - Institut de Recherche en Technologies de l'Information et Sciences de l'Informatique
Funders :
City of Strasbourg CNRS et al. IdEx University of Strasbourg Light Work/s Exhibition The Society of Photo-Optical Instrumentation Engineers (SPIE)
Funding text :
C. Caucheteur is an Associate Researcher of the F.R.S.-FNRS. This work has been initiated thanks to the SmartµSens funding from the SPW Recherche. Authors acknowledge ALSTOM and INFRABEL for their collaboration on the on-field experiments.
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