基于约束配准的电力杆塔变形检测方法

A Detection Method for Transmission Line Tower Deformations Based on Binding Bars

在电力杆塔变形检测过程中,传统的方法因其成本优势一直被广泛使用。但是,随着新技术的发展,传统方法在检测过程中的劣势也更加显著。针对目前传统方法在电力杆塔变形检测过程中显现的检测效率低、精度差这一现象,将三维激光扫描技术引进;并提出了一种基于激光点云数据的杆塔变形检测方法;该系统考虑到杆塔的真实变形情况,在传统最近邻迭代(ICP)算法的基础上,设计了一种改进的带约束杆塔点云配准算法。此外,设计了一套完整的杆塔变形监测系统;该系统可实现对电力杆塔变形结果的偏差分析及可视化输出,全面地反映出杆塔的变形情况。系统的输入是能够反映电力杆塔表面真实坐标的点云数据,通过一系列高效的数据处理最终呈现高精度的变形结果。

In the deformation inspection of transmission line tower,some traditional methods are widely used for the cost consideration. However,these methods reveal extremely poor performance in accuracy and efficiency with the advance in technology. Considering the aforementioned limitations,the 3 D laser scanning technology was creatively introduced into the deformation inspection of transmission line towers and proposed a new framework to achieve the deformation inspection. On the basis of the traditional ICP algorithm,the constrained registration method was designed by considering the real deformation of the transmission line towers. Comprehensively,formation variance analysis was executed and visualized the analysis results with a user-friendly form. The framework takes as input massive point clouds which reflect the real surfaces of the transmission line towers and finally presents the deformation result with high accuracy and efficiency after some elaborately designed algorithms.