Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (5): 72-78.doi: 10.16180/j.cnki.issn1007-7820.2021.05.013

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Study on On-Line Detection of Surface Defects of Flat Enameled Wire

SONG Zhangming1,2,HE Huiyong1,2,HUANG Yuejun1,2   

  1. 1. School of Physics and Electronic Science,Changsha University of Science & Technology,Changsha 410114,China
    2. Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments,Changsha 410114,China
  • Received:2020-02-13 Online:2021-05-15 Published:2021-05-24
  • Supported by:
    Postgraduate Scientific Research Innovation Project of Hunan Province(CX2018B574)


In order to realize the on-line detection of flat enameled wire surface defects, a detection system based on image processing is designed in this study. The system uses a frame-to-frame difference method to separate the background of the flat enameled wire. In view of the jitter interference in the background-separated image, a debounce process is proposed. For images with defects, features such as the location, area, and perimeter of the defects are extracted using connected domain analysis and boundary tracking algorithms. The experimental results show that the accuracy of the system for detecting defects reaches 95%, which reduces the processing time of defect feature extraction, indicating that the system can meet the requirements of online detection and has good application value.

Key words: flat enameled wire, image processing, surface defects, online detection, frame difference method, background separation, jitter interference, feature extraction

CLC Number: 

  • TP751.1