Title :
System design for PCB defects detection based on AOI technology
Author :
LI, Ziyin ; Yang, Qi
Author_Institution :
Coll. of Opt. & Electron. Technol., China Jiliang Univ., Hangzhou, China
Abstract :
A design of PCB automatic defects detection system based on AOI technology is presented. The hardware design is emphatically introduced including illumination module, image acquisition module, motion control unit, PC, graphic display device and operation unit. Simultaneously, the software design is briefly explained. This design is a non-contact PCB defects detection technology which can not only detect open circuit and short circuit defects, but also can detect wire gaps, voids, scratch defects etc. The highest resolution of the design is 15μm and the detection success rate is over 95%.
Keywords :
automatic optical inspection; display devices; fault diagnosis; image processing; lighting; motion control; printed circuit manufacture; printed circuit testing; AOI technology; PC; PCB automatic defect detection system design; automatic optical inspection; graphic display device; hardware design; illumination module; image acquisition module; motion control unit; open circuit defect detection; operation unit; printed circuit board; scratch defect detection; short circuit defect detection; software design; void detection; wire gap detection; Cameras; Charge coupled devices; Computers; Feature extraction; Inspection; Lighting; Motion control; PCB defects detection; automatic optical inspection; image pretreatment; image processing;
Conference_Titel :
Image and Signal Processing (CISP), 2011 4th International Congress on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-9304-3
DOI :
10.1109/CISP.2011.6100553
