Weigh-in-motion sensors and traffic monitoring systems - Sate of the art and development trends

Dontu, A I; Bârsănescu, P D; Andrusca, Liviu; Danila, N. A.

doi:10.1088/1757-899x/997/1/012113

Cited by 21 publications

(20 citation statements)

References 22 publications

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“…The actual Weigh-in-Motion (WIM) sensors are usually made of: a pair of wired magnetic loops and a force sensor. The WIM station needs to determine the speed of vehicles, classify the vehicles, weigh the cars and trucks and provide real data traffic useful in avoiding traffic jams [5].…”

Section: Actual Types Of Wim Sensorsmentioning

confidence: 99%

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New composite polymer sensor for vehicle weighing

Dontu

Rakoşi

Bârsănescu

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The work presented in this paper describes a new concept of the sensor for weighing-in-motion of vehicles. This sensor has small dimensions and can be used for weighing the vehicles. The sensor has four strain gauges, two of them are external and two are embedded into polymer. It’s well known that the influence of temperature can affect the measurement process and also can change the output signal of strain gauges. The hysteresis and linearity graphics of strain gauges are compared in order to establish which one has higher values. The measurements lead to interesting results which are presented in this paper.

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Section: Actual Types Of Wim Sensorsmentioning

confidence: 99%

“…The tire applies the force on the sensor and the piezoelectric materials give an output signal which is the function of the force applied. This kind of sensor is narrow and have the width smaller than the tire footprint [4,5].…”

Section: Figurementioning

confidence: 99%

New composite polymer sensor for vehicle weighing

Dontu

Rakoşi

Bârsănescu

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

Self Cite

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“…Widespread applications of WIM sensors and systems require non-intrusive, low-cost, and durable solutions capable of accurately detecting vehicle types and estimating their speed and weight through the axle count, weight, and separations [9,14,25,26]. The use of multi-functional materials capable of sensing as non-intrusive and highly durable solutions has been studied by the authors and other researchers [27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Innovative Carbon-Doped Composite Pavements with Sensing Capability and Low Environmental Impact for Multifunctional Infrastructures

et al. 2021

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Recently, smart composites that serve as multi-functional materials have gained popularity for structural and infrastructural applications yielding condition assessment capabilities. An emerging application is the monitoring and prediction of the fatigue of road infrastructure, where these systems may benefit from the ability to detect and estimate vehicle loads via weigh-in-motion (WIM) sensing without interrupting the traffic flow. However, off-the-shelf applications of WIM can be improved in terms of cost and durability, both on the hardware and software sides. This study proposes a novel multi-functional pavement material that can be utilized as a pavement embedded weigh-in-motion system. The material consists of a composite fabricated using an eco-friendly synthetic binder material called EVIzero, doped with carbon microfiber inclusions. The composite material is piezoresistive and, therefore, has strain-sensing capabilities. Compared to other existing strain-sensing structural materials, it is not affected by polarization and exhibits a more rapid response time. The study evaluates the monitoring capabilities of the novel composite according to the needs of a WIM system. A tailored data acquisition setup with distributed line electrodes is developed for the detection of moving loads. The aim of the paper is to demonstrate the sensing capabilities of the newly proposed composite pavement material and the suitability of the proposed monitoring system for traffic detection and WIM. Results demonstrate that the material is promising in terms of sensing and ready to be implemented in the field for further validation in the real world.

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“…High-speed WIM systems use sensors based on different technologies. The design and performance characteristics of the most used are reported, among others, in the article [ 6 ]. These include piezo-polymer, piezo-quartz, bending plate, and single load cell sensors.…”

Section: Introductionmentioning

confidence: 99%

Influence of Trajectory and Dynamics of Vehicle Motion on Signal Patterns in the WIM System

Ryguła

Maczyński

Brzozowski

et al. 2021

Sensors

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This paper presents the analyses of the signals recorded by the main sensors of a WIM test station in the cases of abnormal runs (i.e., runs with the changes of trajectory or the dynamics of vehicle motion). The research involved strain gauges which are used for measuring the weight of vehicles, inductive loops, as well as piezoelectric sensors used, inter alia, to detect twin wheels and to determine where a vehicle passes through a station. Since the designers intend the station to be able to implement the direct enforcement function, the selection of runs deviating from the normative ones constitutes an important issue for the assessment of the measurement reliability. The study considered the location of the trajectory of the runs, the dynamics (acceleration/braking) and the trajectory changes. The change in the amplitude and the value of the signal recorded by the strain gauges as a function of the location (position) of the contact between sensor and tires is a noteworthy observation which indicates the need to monitor this parameter in automatic WIM systems. Other tests also demonstrated the influence of the analysed driving parameters on the recorded results. However, by equipping the WIM station with a set of duplicate strain gauges, the measurement errors of the gross weight and axle loads are normally within the accuracy limits of class A(5) stations. Only in the case of accelerating/decelerating, does the error in measuring the load of a single axle reach several per cent.

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Weigh-in-motion sensors and traffic monitoring systems - Sate of the art and development trends

Cited by 21 publications

References 22 publications

New composite polymer sensor for vehicle weighing

New composite polymer sensor for vehicle weighing

Innovative Carbon-Doped Composite Pavements with Sensing Capability and Low Environmental Impact for Multifunctional Infrastructures

Influence of Trajectory and Dynamics of Vehicle Motion on Signal Patterns in the WIM System

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