基于图像边缘与Hough变换的振动位移测量方法  

Vibration Displacement M easurement Method Based on Image Edge and Hough Transform

作　　者：郭强 许涛 李建平 陈玉立 高琛 GUO Qiang;XU Tao;LI Jianping;CHEN Yui;GAO Chen(School of Mechanical and Electrical Engineering,Xi′an Polytechnic University,Xi′an 710600,China;Xi′an Key Laboratory of Modern Intelligent Textile Equipment,Xi′an Polytechnic University,Xi′an 710049,China)

机构地区：[1]西安工程大学机电工程学院,陕西西安710600 [2]西安工程大学西安市现代智能纺织装备重点实验室,陕西西安710049

出　　处：《轻工机械》2023年第6期76-81,共6页Light Industry Machinery

基　　金：广东省精密齿轮柔性制造装备技术企业重点实验室2022年度开放基金(2021B1212050012-05);陕西省科技厅自然科学基金面上项目(2019JM-417)。

摘　　要：为了解决振动位移测量场合受限于传感器的安装空间,以及其本身质量对测量精度的影响,课题组提出了一种基于视频图像的振动测量方法,建立了图像边缘检测结果与目标物体位移之间的联系。由于使用经典Canny算法进行图像测量时,其图像边缘会出现不连续或虚假的情况,因此采用图像灰度与Hough变换相结合的方法,提高其测量精度。为验证该方法的有效性,搭建了箱体模型(目标物体)进行振动实验;并将经典Canny算法得出的结果及文中提出的视频图像测量的结果与传感器测得结果进行比较。实验结果表明,提出的方法相比使用经典Canny算法进行图像测量时精度提高了大约12%,且具有测量简单和测量范围灵活等优点。该方法为测量环境受限的场地提供了一种新的思路。In order to solve the problem of vibration displacement measurement being limited by the installation space of sensors,and reduce the impact of sensor quality on measurement accuracy,a vibration measurement method based on video image was proposed,and the relation between image edge detection results and target object displacement was established.Due to the presence of discontinuity or falsehood in image edges by using the classic Canny algorithm for image measurement,a method of combining image gray level and Hough transform was adopted to improve the measurement accuracy.In order to verify the effectiveness of this method,a vibration experiment based on a vibration test bench box was designed.And the results obtained from the classic Canny algorithm and video image measurement results proposed in the article were compared with the results measured by sensors.The experimental results show that the proposed method improves the accuracy of image measurement by approximately 12%compared to using the classic Canny algorithm.The proposed method has the advantages of simple measurement and flexible measurement range,and provides a new way to measure the site with limited environment.

关 键 词：振动测量 图像灰度矩 边缘检测 HOUGH变换 

分 类 号：TH113.1[机械工程—机械设计及理论] TP391.411[自动化与计算机技术—计算机应用技术]