Smart railway traffic monitoring using fiber Bragg grating sensors

Esbeen, Bastien Van; Finet, Cyrille; Vandebrouck, Robin; Kinet, Damien; Boelen, Kévin; Guyot, Corentin; Caucheteur, Christophe

doi:10.1117/12.2624778

Cited by 5 publications

(3 citation statements)

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“…Intensity sensors can use the Faraday effect and measure the magnetic field; in this way an optical sensor can be created that works similarly to induction loops [8]. Another possible use of fiber optic sensors is spectral measurement, here FBGs (Fiber Bragg Gratings) are usually used, many papers deal specifically with the use of these sensors in transportation [9][10][11]. Their main limitation is the design of the sensor itself and the requirements for the spectral evaluation unit.…”

Section: Introductionmentioning

confidence: 99%

New approach for speed and direction measurement by fiber optic sensor

Cubik,

Nedoma,

Fajkus

et al. 2024

Specialty Optical Fibres VIII

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Traffic monitoring is the subject of scientific publications and technical solutions, primarily due to the need to optimize and increase traffic safety. There are many systems that can determine direction, velocity, or make vehicle classifications. These can be, for example, traditional camera systems, laser gates, LIDAR scanning, pneumatic sensors, or induction loops. A non-traditional approach is the use of optical fibers as a traffic sensor. Optical fiber sensors use different technologies, one of them being sensors that evaluate the phase change of light (interferometers). The enormous sensitivity of these sensors combined with electromagnetic inertia are promising parameters for deploying system in areas that may be disturbed by magnetic fields or require special security requirements. The focus of this research is an optical fiber sensor based on the Michelson interferometer. The paper deals with the sensitivity of the measuring arm when changing its arrangement. Different configurations of the measuring fiber arrangement in relation to the objects to be monitored lead to the construction of a monitoring system with properties useful for direction monitoring and velocity measurement. This paper deals with the asymmetric configuration of the measuring arm of an optical fiber interferometer. Experiments in outdoor vehicular traffic conditions together with frequency spectrum analysis investigate the usability of the measurement system. The system itself can be extended to classify the measured objects by analyzing the amplitude frequency spectrum and using machine learning.

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Section: Introductionmentioning

confidence: 99%

New approach for speed and direction measurement by fiber optic sensor

Cubik,

Nedoma,

Fajkus

et al. 2024

Specialty Optical Fibres VIII

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“…Vibration-based techniques can identify changes that indicate damage, but they cannot localize where the damage occurs or make observations about the cause. Recently, as new Bragg gratings continue to emerge [7] , specialists and scholars proposed a method of fiber Bragg grating (FBG) to monitor the wind turbine [8] , but FBG is measured at discrete locations along an optical fiber and inability to accurately locate. Instead, OFDR has high spatial resolution [9][10] , and it can accurately detect where the damage has occurred.…”

Section: Introductionmentioning

confidence: 99%

Research on damage detection of wind turbine tower based on OFDR

Gu,

Luo,

Han

et al. 2023

AOPC 2023: Optic Fiber Gyro

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A wind turbine tower damage detection method based on optical frequency domain reflection (OFDR) technology is proposed in this paper, which can detect structural damage position and damage degree of wind turbine towers. The damage location of the wind turbine tower structure can be accurately detected by the method with a spatial resolution of 1cm, the detection error of damage degree is less than 2.2%. This method provides a candidate solution for real-time detection of wind turbine tower damage.

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“…Some of them are also used in the field of transport for vehicle detection, for security monitoring of a structural load of road and motorway tunnels, etc. When we focus on physical principles based on optics, many of these sensors are based on interferometric measurements [5][6][7][8] and on the use of Bragg gratings [9][10][11][12]. Designs of compressive force and weight sensors that use the detection of changes in the intensity of optical power transmitted by an optical fiber are beginning to appear [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Measuring the pressure force by detecting the change in optical power intensity

Jargus

Kostelanský²,

Fridrich³

et al. 2022

Electro-Optical Remote Sensing XVI

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This article describes the research work in search of an optimized solution for the measurement of compressive force using the detection of the intensity of the optical power coupled into the optical fiber. In the experimental part of the research a product realized by 3D printing was used the outer case of which was made of FLEXFILL 98A material and the inner part was formed by a three-part PETG layer while the middle sensory part was changeable. This model was used to test different shapes of deformation elements in the variable part to find suitable configurations of the deformation plate. A standard 50/125 μm multimode graded index optical fiber was placed in the sensory part. It can be assumed that the results of this research can be used for the design of sensors based on the detection of changes in optical power intensity

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Smart railway traffic monitoring using fiber Bragg grating sensors

Cited by 5 publications

References 0 publications

New approach for speed and direction measurement by fiber optic sensor

New approach for speed and direction measurement by fiber optic sensor

Research on damage detection of wind turbine tower based on OFDR

Measuring the pressure force by detecting the change in optical power intensity

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