中文摘要：

分析工程车辆荷重动态检测系统的功能原理、力学设计要求，设计新系统传感器结构方案。根据新系统传感器的结构特点，介绍应用有限元法进行力学模型简化的方法，结合工程实际，进行有限元分析及优化设计，提高传感器强度、刚度及动态检测的精度。

英文摘要：

A sensor of weigh in motion （WIM） system for vehicles was proposed. Based on the analysis of the communication condition, weigh-in-shaftfor vehicles, and functional principle, a 3D Finite element for the WIM system was analyzed. As well as, the sensors＇ sensitivity and flexible in the research projects were identified.