基于三维空间模型的特高压耐张塔跳线间隙检测方法

Gap Detection Method for Jumper of UHV Tension Tower Based on Three-dimensional Space Model

提出一种基于三维空间模型的特高压耐张塔跳线间隙检测方法研究;利用三维激光扫描数据建立特高压耐张塔整体空间扫描模型,并描述激光扫描建模的原理,确定出待检测标的物的三维点云数据集合;通过预处理的方式去除点云数据检测系统内部噪声和环境噪声,对点云数据集合进行高斯平滑滤波、坐标转换和点云数据拼接,并输出空间点云数据的文件集合;获取的跳线检测测量结果中还有可能包含粗差、系统误差和偶然性误差,利用检测数据分析前必须消除各种误差因素的影响;实验数据表明,提出方法的坐标检测精度值能够控制在±1°,并且总体的检测残差分布也位于合理的区间范围之内,实际检测效果优于传统检测方法。

A new method for detecting jumper clearance of UHV tension tower based on three-dimensional space model is proposed. The overall spatial scanning model of UHV tensile tower is established by using 3D laser scanning data, and the principle of laser scanning modeling is described. The internal noise and environmental noise of the point cloud data detection system are removed by pre-processing, and the point cloud data set is carried out. Gauss smoothing filter, coordinate transformation and point cloud data mosaic, and output the file set of spatial point cloud data;the measured results of jumper detection may also contain gross errors, systematic errors and accidental errors, so the influence of various error factors must be eliminated before using detection data analysis. The experimental data show that the coordinate detection accuracy of the proposed method can be controlled at ±1, and the overall distribution of detection residuals is within a reasonable range. The actual detection effect is better than the traditional detection method.