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Sensors 2016, 16(12), 2143;

Thermal Property Analysis of Axle Load Sensors for Weighing Vehicles in Weigh-in-Motion System

Department of Measurement and Electronics, AGH University of Science and Technology, 30-059 Krakow, Poland
Author to whom correspondence should be addressed.
Academic Editor: Simon X. Yang
Received: 6 October 2016 / Revised: 25 November 2016 / Accepted: 29 November 2016 / Published: 15 December 2016
(This article belongs to the Special Issue Sensors for Transportation)
Full-Text   |   PDF [3685 KB, uploaded 15 December 2016]   |  


Systems which permit the weighing of vehicles in motion are called dynamic Weigh-in-Motion scales. In such systems, axle load sensors are embedded in the pavement. Among the influencing factors that negatively affect weighing accuracy is the pavement temperature. This paper presents a detailed analysis of this phenomenon and describes the properties of polymer, quartz and bending plate load sensors. The studies were conducted in two ways: at roadside Weigh-in-Motion sites and at a laboratory using a climate chamber. For accuracy assessment of roadside systems, the reference vehicle method was used. The pavement temperature influence on the weighing error was experimentally investigated as well as a non-uniform temperature distribution along and across the Weigh-in-Motion site. Tests carried out in the climatic chamber allowed the influence of temperature on the sensor intrinsic error to be determined. The results presented clearly show that all kinds of sensors are temperature sensitive. This is a new finding, as up to now the quartz and bending plate sensors were considered insensitive to this factor. View Full-Text
Keywords: vehicle axle load sensors; Weigh-in-Motion; pavement temperature vehicle axle load sensors; Weigh-in-Motion; pavement temperature

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Burnos, P.; Gajda, J. Thermal Property Analysis of Axle Load Sensors for Weighing Vehicles in Weigh-in-Motion System. Sensors 2016, 16, 2143.

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