Tire Contact Force Equations for Vision-Based Vehicle Weight Identification

卡车 偏转(物理) 接触片 偏角 鉴定(生物学) 汽车工程 计算机科学 接触力 工程类 天然橡胶 量子力学 生物 光学 物理 有机化学 化学 植物
作者
Xuan Kong,Tengyi Wang,Jie Zhang,Lu Deng,Jiwei Zhong,Yuping Cui,Shudong Xia
出处
期刊:Applied sciences [Multidisciplinary Digital Publishing Institute]
卷期号:12 (9): 4487-4487 被引量:11
标识
DOI:10.3390/app12094487
摘要

Overloaded vehicles have a variety of adverse effects; they not only damage pavements, bridges, and other infrastructure but also threaten the safety of human life. Therefore, it is necessary to address the problem of overloading, and this requires the accurate identification of the vehicle weight. Many methods have been used to identify vehicle weights. Most of them use contact methods that require sensors attached to or embedded in the road or bridge, which have disadvantages such as high cost, low accuracy, and poor durability. The authors have developed a vehicle weight identification method based on computer vision. The methodology identifies the tire–road contact force by establishing the relationship using the tire vertical deflection, which is extracted using computer vision techniques from the tire image. The focus of the present paper is to study the tire–road contact mechanism and develop tire contact force equations. Theoretical derivations and numerical simulations were conducted first to establish the tire force–deformation equations. The proposed vision-based vehicle weight identification method was then validated with field experiments using two passenger cars and two trucks. The effects of different tire specifications, loads, and inflation pressures were studied as well. The experiment showed that the results predicted by the proposed method agreed well with the measured results. Compared with the traditional method, the developed method based on tire mechanics and computer vision has the advantages of high accuracy and efficiency, easy operation, low cost, and there is no need to lay out sensors; thus, it provides a new approach to vehicle weighing.
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