使用车载光达进行铺面平整度侦测可行性研究-中国鑛冶工程学会互动.PDF

使用車載光達進行鋪面平整度偵測可行性 研究* The Feasibility Study of Pavement Roughness Detecting By Mobile LiDAR 1 2 3 4 P.L. Li, T.T. Yu, C.S. Chan, Y.S. Chen At present, the measurement of pavement roughness is by manual, method utilizing the 3m-straight edge or the Hi-Lo detector, and the efficiency is about 0.8 kilometer 0.8 per hour. To meet the need of the high population density and complex traffic net in Taiwan, the current measurement is time-taken, laborious and inefficient, this study imports mobile LiDAR data to improve the efficiency. It has several advantages such as accessing road or pavement information much more quickly, higher accuracy data and less operating 40 error than the traditional method under the operating rate of 40 kilometers per hour. Therefore, we preprocess and deal strip adjustment with the point cloud data of pavement from two laser scanner in the mobile LiDAR system. To compare the result in different condition of strip adj ustment, we examine on distinct speed, turning angles and properties 60km/ of pavement. It shows that the amount of systematic errors hr 40 in strip adjustment will be reduced to 50% when the speed is lower than 60km/hr, and the turning angle is less than 40 degree. At the end, we could offer pavement roughness analysis and also elevation change of road. 關鍵字： Key words: Mobile LiDAR, Strip dj ustment, Precision Improvement, Pavement Roughness