Vehicle Weighing in Motion with Fibre Optic Sensors

Joseph, Boby; Teral, Stephane R.; Caussignac, Jean-Marie; Siffert, M

doi:10.1177/002029409302600202

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…"Smart road" technology already exists in some countries, however, road monitoring system in our country is not very perfect. It is important for the highway governor to master the information of vehicles running on the road in real time [1,2]. Generally, the road vehicle information parameters which are detected including vehicle speed, vehicle classification, vehicle weight and traffic flow are crucial to traffic safety and management.…”

Section: Introductionmentioning

confidence: 99%

Road Vehicle Information Collection System Based on Distributed Fiber Optics Sensor

Feng

Wang

Ruan

et al. 2014

AMR

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A novel distributed fiber optics sensor used for road vehicle information collection system was proposed. Optical fiber was fixed on the road surface to be used as the sensing media. The vehicle information such as speed, vehicle type, vehicle weight and traffic flow can be obtained. To increase the sensitivity of such sensor, an optical Fabry-Perot (F-P) fiber interference was used. Sensing optical fiber was designed to be with a metal coating for fiber protection and high performance. Experiment results show that such distributed fiber optics sensor may be with a high performance in transportation area without digging when it is installed on the road surface.

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Section: Introductionmentioning

confidence: 99%

Road Vehicle Information Collection System Based on Distributed Fiber Optics Sensor

Feng

Wang

Ruan

et al. 2014

AMR

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“…Due to these positive attributes of optical fibers, efforts have been directed towards developing sensors for civil engineering infrastructures, including WIM systems and bridge monitoring, using fiber optics technology [ 10 - 24 ]. Optical fiber techniques proposed for WIM systems, include those based on light polarization and interferometry [ 10 , 15 , 17 , 23 ], bending loss, modulation of light intensity through an optical fiber having a single core [ 11 , 13 , 14 ], and on the concept of bragg grating [ 19 , 20 , 24 ]. However, none of these have found widespread practical use so far.…”

Section: Introductionmentioning

confidence: 99%

“…Other fiber optic techniques investigated for WIM systems include those based on light polarization, interferometry [ 10 , 15 ]; measurement of transmitted light intensity through the fiber having a single core [ 11 , 13 , 14 ]; and on the concept of fiber Bragg grating [ 17 , 18 , 14 ]. Interferometric techniques are complicated and require a different interferometer for each fixed sensing point, separated from other interferometers by a system of fiber optic couplers.…”

Section: Introductionmentioning

confidence: 99%

A Special Fiber Optic Sensor for Measuring Wheel Loads of Vehicles on Highways

Malla

Sen

Garrick

2008

Sensors

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This paper presents results from an investigation on a special optical fiber as a load sensor for application in Weigh-in-Motion (WIM) systems to measure wheel loads of vehicles traveling at normal speed on highways. The fiber used has a unique design with two concentric light guiding regions of different effective optical path lengths, which has the potential to enable direct measurement of magnitudes as well as locations of forces acting at multiple points along a single fiber. The optical characteristic of the fiber for intended sensing purpose was first assessed by a simple fiber bending experiment and by correlating the bend radii with the output light signal intensities. A simple laboratory load transmitting/fiber bending device was then designed and fabricated to appropriately bend the optical fiber under applied loads in order to make the fiber work as load sensor. The device with the optical fiber was tested under a universal loading machine and an actual vehicle wheel in the laboratory. The test results showed a good relationship between the magnitude of the applied load and the output optical signal changes. The results also showed a good correlation between the time delay between the inner and outer core light pulses and the distance of the applied load as measured from the output end of the fiber.

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<title>Fiber optic weigh-in-motion sensor: correlation between modeling and practical characterization</title>

Teral¹,

Larcher²,

Caussignac

et al. 1996

SPIE Proceedings

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This paper shows the way to turn a defect inherent to single-mode fiber, namely birefringence, into a prime quality for a powerful and reliable sensor. The latter is entirely devoted to Weigh-In-Motion (WIM) applications extended to complete active traffic management systems. After a brief description of the sensor and its principle of operation, the theoretical model is developed. Then, a full characterization made in both static and dynamic conditions is presented. The results obtained illustrate how it is difficult to interpret a weight measured in dynamic conditions and correlate the value with the static weight.

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Vehicle Weighing in Motion with Fibre Optic Sensors

Cited by 4 publications

References 1 publication

Road Vehicle Information Collection System Based on Distributed Fiber Optics Sensor

Road Vehicle Information Collection System Based on Distributed Fiber Optics Sensor

A Special Fiber Optic Sensor for Measuring Wheel Loads of Vehicles on Highways

<title>Fiber optic weigh-in-motion sensor: correlation between modeling and practical characterization</title>

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