针对工作空间测量定位系统(wMPS)存在交会误差, 且在复杂测量现场中存在空间遮挡问题, 文中在研究周向接收器测量原理的基础上设计了一种全新的周向接收器。该接收器在一个平面内固定了6个光电接收单元, 通过标定6个单元的位置关系使其成为一个整体, 进而实现测量功能。以两台发射站为基础, 详细阐述了该周向接收器标定方法, 并依托天津大学研发的wMPS实验平台对该方法进行了实验验证。实验结果显示: 周向接收器的测量重复性在0.2 mm以内, 测量精度在0.3 mm以内, 该方法在解决系统在复杂测量现场中的空间遮挡问题的同时, 从原理上消除了交会误差对测量结果的影响。

In allusion to the intersection error of workspace Measurement and Positioning System (wMPS) and the occlusion problem in the complicated measurement spot, a new circumference receiver was designed based on multi-angle circumference constraint location method and the calibration method was presented. With scanning laser plane measurement principle and feature, the receiver consisted of six photoelectric receiving elements was fixed on a cyclinder. The structure and the calibration method of the circumference receiver were elaborated in detail based on two laser transmitters in this paper. The calibration method was verified with wMPS experimental platform designed by Tianjin University. The experiment results show that the measurement repeatability of the calibration is within 0.2 mm and the accuracy is within 0.3 mm. This method solves the complicate measurement system space scene occlusion and eliminates the impact of intersection error on the measurement result in principle.