THE CHEMICAL STAIN INSPECTION OF POLYSILICON SOLAR CELL WAFER BY THE FUZZY THEORY METHOD

被引:6
作者
Lin, Chern-Sheng [1 ]
Lin, Chih-Wei [2 ]
Yang, Shih-Wei [3 ]
Lin, Shir-Kuan [3 ]
Chiu, Chuang-Chien [1 ]
机构
[1] Feng Chia Univ, Dept Automat Control Engn, Taichung 40724, Taiwan
[2] Wonder Syst Corp, Taichung, Taiwan
[3] Natl Chiao Tung Univ, Inst Elect & Control Engn, Hsinchu, Taiwan
关键词
Solar wafer; Laser-reflection-point based AOI method; Chemical stain inspection; Fuzzy theory; Back-propagation; Image binarization algorithm; Stain recognition; CRYSTALLINE SILICON; DEFECT;
D O I
10.1080/10798587.2013.778052
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This study proposed an automatic optical inspection (AOI) technique to improve the inspection of chemical stains on solar wafers. Poly-silicon solar cell wafers were inspected for chemical stains, and the inspection was rapid and stable. The system used a laser-reflection-point-based AOI method for solar wafer chemical stain inspection. Based on the fuzzy theory, the image binarization algorithm could efficiently filter irrelevant image information, and the back-propagation method was also utilized to determine if the image was stained. The inspection algorithm integrated fuzzy theory and the back-propagation method in order to shorten the comparison time and quickly find the target. The experiment proved that the validity of the proposed method could achieve a recognition rate of 98% from among 1000 images.
引用
收藏
页码:391 / 406
页数:16
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