惯性基准高程测量方法在路面平整度检测中的应用  

Measurement of the Pavement Elevation Based on Inertia Benchmark

作　　者：刘新宇[1] 肖传宇[1] 吴勇[1] 

机构地区：[1]武汉理工大学水路公路交通安全控制与装备教育部工程研究中心,武汉430063

出　　处：《交通信息与安全》2009年第5期166-169,共4页Journal of Transport Information and Safety

基　　金：国家自然科学基金资助项目(批准号:50578128);863计划资助项目(批准号:2006AAZ215)资助

摘　　要：介绍了路面国际平整度指标计算原理,设计了基于高精度激光测距传感器和加速度传感器的路面平整度检测系统,采用截至频率为20 Hz的二阶巴特沃斯低通滤波器和零均值化对检测车垂直振动加速度数据进行预处理,同时利用直接积分法计算检测车垂直振动位移。实验结果表明,检测车垂直振动位移计算结果与实际测量值基本吻合。When vehicle sensors are used to inspect international pavement roughness index, it is needed to calculate the displacement of vehicle vibration, and to modify data of the pavement elevation. This paper introduces the inspecting principle of international roughness index, and uses the precision laser and acceleration sensors to design inspecting system of pavement roughness. The study designs a second-order Butterworth low-pass filter whose stopband is 20 Hz and it makes a mean normalization processing on-vehicle vibration data. Finally, this paper calculates the displacement of vehicle vibration through acceleration numerical integration. The test result shows that the displacements of vehicle vibration are the same between calculation data and actual lmeasurement data

关 键 词：国际不平整度指标 路面高程 加速度传感器 数值积分 

分 类 号：U416[交通运输工程—道路与铁道工程]