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为解决移动钢丝绳横向振动位移难以检测的问题,提出一种应用霍夫变换算法的提升钢丝绳平面横向振动检测方法。根据钢丝绳在图像中主要以直线形式呈现的特征,首先,对待检测的初始静态图像分别进行图像二值化、细化、膨胀及降噪处理,应用霍夫变换算法提取图像中的直线并编号;其次,根据霍夫变换处理结果,提出一种准确获得直线上待测点的处理方法;然后,利用边缘检测法实现了相机的标定,并在选择的感兴趣区域内基于像素遍历实现了待测点动位移的检测;最后,在MATLAB GUI环境中设计了钢丝绳平面横向振动检测软件系统。所提方法可实现矿井提升机、电梯及其他提升装备钢丝绳平面横向振动的非接触式全场检测。
Abstract：To solve the difficulty that transverse vibration displacement of moving steel wire rope cannot be easily acquired, the present study proposes a method using Hough transform to measure plane transverse displacement of hoisting rope. According to the feature that the steel wire rope is mapped into the image with a form of line, first, image binaryzation, thinning, dilation and noise reduction are carried out on the initial static image, line extraction and coding are then conducted by Hough transform. Subsequently, a precision solving method to get the measured point on the line is developed based on the results of Hough transform; then, camera calibration is done with edge detection, on the basis of the region of interest, the dynamic displacement of the measured point is acquired by pixel traversing. Eventually, a measurement software system using MATLAB GUI is developed to obtain the plane transverse vibration displacement of steel wire rope. The presented method can help realize the non-contact, full-filed measurement of steel wire rope, which may be used in the mine hoisting system, elevator-hoisting system or other hoisting equipment.
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基本信息:
DOI：10.12194/j.ntu.20190629001
中图分类号:TP391.41;TD532
引用信息:
[1]姚建南,邢强,许浩然.基于霍夫变换的提升钢丝绳平面横向振动检测方法[J],2021,20(01):47-54.DOI:10.12194/j.ntu.20190629001.
基金信息:
国家自然科学基金项目（51805273）;; 江苏省自然科学基金项目（BK20170441）;; 中国博士后科学基金项目（2018M630535）