水泥电杆病害现场监测目标特征几何分析  

Geometric analysis of target features for on-site monitoring of cement pole diseases

作　　者：喻志程 袁航 陈骞 YU Zhicheng;YUAN Hang;CHEN Qian(Yancheng Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Yancheng 224000,China)

机构地区：[1]国网江苏省电力有限公司盐城供电分公司,盐城224000

出　　处：《无损检测》2025年第1期47-51,65,共6页Nondestructive Testing

摘　　要：水泥电杆病害现场监测时,众多杆体病害特征混杂,难以准确分辨,而降低了水泥电杆病害监测的智能化效果。为提升水泥电杆的病害监测精度,提出杆体病害双目立体视觉特征几何分析方法。应用双目立体视觉三维成像算法,依据获取到的成像仪之间的位置关系以及不同成像仪扫描图像之间的三维坐标对应关系,进行现场杆体病害位置坐标转换,校正杆体病害定位误差,分析状态特征差异,构建并逐次优化杆体病害特征几何优化模型,引入随机梯度下降方法求解区分侵蚀、腐蚀、外力挤压、应力挤压等病害,辨识病害类型以及严重程度。试验结果表明,借助双目视觉三维成像技术,可完整提取出杆体全部裂缝特征。考虑到视差影响,将杆体病害特征几何进行优化,优化后的相对位移值测量结果精度较高,水泥电杆腐蚀强度与实际电杆腐蚀强度一致。该方法为水泥电杆病害现场监测提供了新思路。In the field monitoring of cement pole diseases,many pole diseases characteristics are complex and difficult to distinguish accurately,which reduces the intelligent effect of cement pole disease monitoring.In order to improve the monitoring accuracy of cement pole diseases,a geometric analysis method of binocular stereo vision features of pole diseases was proposed.Using binocular stereo vision 3D imaging algorithm and according to the position relationship between imagers and the corresponding relationship of 3D coordinates between different imager scanning images,the site rod disease position coordinates were converted,the rod disease positioning error was corrected,the difference of state characteristics was analyzed,the geometric feature optimization model of rod disease was constructed,the geometric feature of rod disease was optimized step by step and the random gradient descent method was introduced to solve the problem of distinguishing erosion disease,corrosion disease,external force,stress extrusion disease,etc.,and identify the disease type and severity.The experimental results showed that with the help of binocular vision 3D imaging technology,all the crack characteristics of the pole body were completely extracted.Considering the influence of parallax,the geometric characteristics of the pole body disease were optimized,the relative displacement measurement results had a high accuracy and the corrosion strength of the cement pole was consistent with that of the actual pole after optimization.The providing a new idea for on-site monitoring of cement pole diseases.

关 键 词：双目立体视觉 三维成像算法 水泥电杆 病害现场 监测方法 

分 类 号：TU746[建筑科学—建筑技术科学] TG115.28[金属学及工艺—物理冶金]