近景摄影测量在牵引车硬点检测中的应用  

Application of close range photogrammetry in measurement of tractor unit's hard spot

作　　者：陈芮 冉险生[1] 张渝[1] 

机构地区：[1]重庆交通大学,重庆400074

出　　处：《现代制造工程》2018年第2期130-135,共6页Modern Manufacturing Engineering

摘　　要：针对大型载重牵引货车底盘零/部件相应位置关系以及底盘零/部件在不同载荷状态下的位移变化量不易检测的特点,提出了使用工业近景摄影测量的方法对其进行精确测量。通过TRITOP光学测量系统重建某大型牵引车未拖挂和全拖挂两种状态的三维点云,将三维点云数据在三维软件中拟合,找出硬点并提取其坐标,据此求得测量值,并将其与理论值进行对比,同时计算出底盘零/部件在两种状态的位移变化量。实例表明该方法既满足了测量精度需求,又弥补了传统测量方法的不足,值得广泛推广应用。Measured the chassis parts position and displacement of large tractor unit with different loads is a major difficulty. Close-range photogrammetry is posed to be an accurate detection means. Reconstruction a large tractor unit＇ s 3D point cloud of two states, no trailer and full trailer, by TRITOP system. Then fit the hard point coordinare with the 3D software, and compared with the theoretical value dates, calculated the change in the classis components displacement of two states. Example shows that the method not only meet the needs of measurement accuracy, but also makes up for the shortcomings of traditional measurement methods, it is worth widely used.

关 键 词：大型牵引车 近景摄影测量 交向摄影 TRITOP光学测量系统 

分 类 号：P234.1[天文地球—摄影测量与遥感]