Using Fibre Optic Cables To Deliver Intelligent Traffic Management In Smart Cities

Hall, A. J.; Minto, Chris

doi:10.1680/icsic.64669.125

Cited by 16 publications

(11 citation statements)

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“…The cable position with respect to the road and the dependencies of the system quality on the cable laying options are considered in [ 99 ]. The results of a two-year test of a system on a small section of urban highway, presented in [ 100 ], reported accuracies of 70% and 95%, for the classification of car types and their speed, respectively.…”

Section: Das In the Engineering Sciences (Andrey A Zhirnov And Konsta...mentioning

confidence: 99%

Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective

Gorshkov

Yüksel

Fotiadi

et al. 2022

Sensors

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This work presents a detailed review of the development of distributed acoustic sensors (DAS) and their newest scientific applications. It covers most areas of human activities, such as the engineering, material, and humanitarian sciences, geophysics, culture, biology, and applied mechanics. It also provides the theoretical basis for most well-known DAS techniques and unveils the features that characterize each particular group of applications. After providing a summary of research achievements, the paper develops an initial perspective of the future work and determines the most promising DAS technologies that should be improved.

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Section: Das In the Engineering Sciences (Andrey A Zhirnov And Konsta...mentioning

confidence: 99%

Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective

Gorshkov

Yüksel

Fotiadi

et al. 2022

Sensors

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“…These systems are used extensively by TMCs to monitor abnormal traffic patterns, accidents, and congestion for rerouting traffic and responding to disasters ( 21 , 22 ). Although there is an extensive amount of literature on the applicability of DFOS for monitoring railway traffic ( 23 , 24 ), gas flow in pipelines ( 25 , 26 ), intrusions ( 12 , 27 ), and structural health ( 28 – 30 ), the use of DFOS to monitor traffic is still an emerging field ( 9 ). This motivates us to introduce a basic framework required to realize a DFOS based highway traffic monitoring system.…”

Section: Distributed Fiber-optic Sensingmentioning

confidence: 99%

“…These can then be used to detect congestion, abnormal traffic patterns, and travel times. The potential of DFOS for measuring the traffic properties has recently being studied ( 6 – 10 ). To the best of our knowledge, these is no literature which provides sufficient information on how the sensor data is processed and used to monitor traffic.…”

mentioning

confidence: 99%

Overcoming Challenges of Distributed Fiber-Optic Sensing for Highway Traffic Monitoring

Narisetty

Hino

Huang

et al. 2020

Transportation Research Record: Journal of the Transportation R

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This work presents a wide-area highway monitoring system based on distributed fiber-optic sensing (DFOS) as a cost-effective way of gathering traffic information at numerous sensing points along a fiber cable. The primary advantage of our proposed DFOS system is that it utilizes an existing fiber cable buried beneath the highway to detect and localize the vibrations of passing vehicles. Each section along the fiber cable acts as a sensing point and registers the vibration of nearby vehicles. The amplitude and location of vibrations as measured by DFOS can supplement the information obtained from existing point sensor systems (traffic camera, inductive loop detector) which are typically installed hundreds of meters apart. We trained a neural network for speed estimation ( SpeedNet) and also proposed novel solutions to some of the challenges posed when using DFOS to monitor traffic. To demonstrate the potential of DFOS, we conducted a field test for two days on a 45-km section of the Tomei expressway in Japan. Our proposed SpeedNet model estimated average traffic speeds every minute for an overall accuracy of over 90% as compared with existing loop detector-based sensors. As cameras suffer from weather and intensity changes, and loop detectors can be difficult to install at multiple locations, monitoring traffic using DFOS over an existing fiber-optic cable shows tremendous potential.

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“…The recent studies have focused on qualitative evaluation of roadside φ-OTDR data obtained from unused roadside telecommunications fiber (called dark fiber) to monitor vibrations caused by vehicles. 12 For example, Liu et al (2020) showed that DAS data from a roadside array can be used to classify vehicles based on their acoustic signatures. 13 Lindsey et al (2020) explored the mechanics that cause the signals at low frequency, identifying the source of <1 Hz signals as roadbed strain.…”

Section: Introductionmentioning

confidence: 99%

“…This study demonstrates how φ‐OTDR can be used to sense strains caused by different roadway activities. While recent studies have focused on qualitative evaluation of roadside φ‐OTDR data obtained from unused roadside telecommunications fiber (called dark fiber) to monitor vibrations caused by vehicles 12 . For example, Liu et al showed that DAS data from a roadside array can be used to classify vehicles based on their acoustic signatures 13 .…”

Section: Introductionmentioning

confidence: 99%

Road deformation monitoring and event detection using asphalt‐embedded distributed acoustic sensing (DAS)

Hubbard

et al. 2022

Structural Contr & Hlth

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Distributed acoustic sensing (DAS) is a new technology that is being adopted widely in the geophysics and earth science communities to measure seismic signals propagating over 10's of kilometers using an optical fiber. DAS uses the technique of phase-coherent optical time domain reflectometry (φ-OTDR) to measure dynamic strain in an optical fiber as small as nε by examining interferences in scattered light. This technology is opening a new field of research of examining very small strains in infrastructure that can be indicative of performance and use level. In this study, a fiber optic strain sensing cable was embedded into an asphalt concrete test road and spatially distributed dynamic road strain was measured during different types of loading. It is demonstrated that φ-OTDR can be used to quantitatively measure strain in roads associated with events as small as a dog walking on the surface. Optical frequency domain reflectometry (OFDR), a widely implemented but less accurate distributed fiber optic strain monitoring technology, is used along with traditional pavement strain gauges and 3D finite element modeling to validate the φ-OTDR pavement strain measurements. After validation, φ-OTDR strain measurements from various events are presented including a vehicle, pedestrian, runner, cyclist and finally a dog moving along the road. This study serves to demonstrate the deployment of φ-OTDR to monitor roadway systems.

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Using Fibre Optic Cables To Deliver Intelligent Traffic Management In Smart Cities

Cited by 16 publications

References 0 publications

Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective

Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective

Overcoming Challenges of Distributed Fiber-Optic Sensing for Highway Traffic Monitoring

Road deformation monitoring and event detection using asphalt‐embedded distributed acoustic sensing (DAS)

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