J4 ›› 2014, Vol. 41 ›› Issue (3): 110-115+173.doi: 10.3969/j.issn.1001-2400.2014.03.016

• Original Articles • Previous Articles     Next Articles

Detection method for assembling results of electronic components

JIANG Jianguo1;WANG Guolin1,2;MENG Hongwei1;LI Fang1,3;ZENG Yi1,4   

  1. (1. School of Computer Science and Technology, Xidian Univ., Xi'an  710071, China;
    2. No.63726 Unit of PLA, Yinchuan  750001, China;
    3. Air Control & Navigation College, Air Force Engineering University, Xi'an  710051, China;
    4. No.94170 Unit of PLA, Xi'an  710082, China)
  • Received:2013-01-28 Online:2014-06-20 Published:2014-07-10
  • Contact: JIANG Jianguo E-mail:jgjiang@mail.xidian.edu.cn

Abstract:

In order to detect the common problems on PCB faster and more accurately, such as leakage welding, false welding or polarity inversion, a new detection method for assembling results of electronic components is proposed, which makes full use of the powerful search strategy and intelligent optimization mechanism of the EM algorithm. In the new algorithm, the initial population is generated by extracting the coordinate points from the feasible domain randomly and uniformly. The improved normalized correlation function is taken as the objective function. The images' matching points with the same name are regarded as charged particles. And the best image matching point is searched by moving and updating particles. Moreover, a non-uniform mutation operator is introduced to improve the operation of moving particles. Finally the implementation steps and basic process of the new method are designed. Experimental results show that the new method has a faster convergence speed and a higher recognition rate, and is suitable for the detection of PCB.

Key words: electronic components, assembling results detection, electromagnetism-like mechanism algorithm, template matching, normalized correlation function

CLC Number: 

  • TP391.4