Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (7): 61-66.doi: 10.16180/j.cnki.issn1007-7820.2021.07.011

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Concentric Detection of Micro-Precision Glass Encapsulated Electrical Connectors by Binary and Hole Filling Fusion Differential

WANG Gaowei,WANG Fuzhong,LIU Qunpo,WANG Manli,GAO Ruxin,WANG Zhenying   

  1. School of Electrical Engineering and Automation, Henan Polytechnic University,Jiaozuo 454000,China
  • Received:2020-04-06 Online:2021-07-15 Published:2021-07-05
  • Supported by:
    Special Projects Supported by the National Key Research and Development Plan(2016YFC0600906);Science and Technology Innovation Team of Henan University(20IRTSTHN019);Henan Province Innovative Science and Technology Talent Team Construction Project(CXTD2016054);Innovative Science and Technology Team of Henan University of Science and Technology(T2019-2);Doctor's Fund of Henan University of Science and Technology(722103/001/070);Henan Science and Technology Project(172102210270)


The micro-precision glass encapsulated electrical connector is widely used in the electronic industry. At present, manual detection is mainly used to detect concentricity, but the detection efficiency and accuracy can no longer meet the application needs. To solve the complex surface texture of cylindrical glass-encapsulated electrical connector and the difficulty in determining the boundary contour of high-temperature and low-temperature glass columns, a fusion difference algorithm based on binary and hole-filling is proposed, and clear inner circle image is successfully obtained. The image of the filled hole is processed by the maximum connected area method, the noise caused by the background texture is removed, and the outer circle image of the main body of the electrical connector is obtained. Then, a concentric calculation model is established based on the information of the inner and outer circle coordinates, and the concentricity parameters are obtained. The experimental results show that the time for concentric detection is shortened from more than 6.5 s for manual detection to less than 0.32 s, and the accuracy rate reaches more than 90%.

Key words: glass encapsulated, electrical connector, concentric detection, hole filling, difference operation, inner circle image, maximum area method, the main external circular

CLC Number: 

  • TP391