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《Ordnance Industry Automation》 2006-06
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Experimental Research on Precision Measurement of PCB Based on Image Recognition

YAO Xiao-dong1, ZHANG Yong-hong1,2, WU Qi1,3, XUE Bo1 (1. Research Center, Shanghai Yao’s Scientific Ltd. Corp, Shanghai 200030, China; 2. Dept. of Information & Communication, Nanjing University of Information Engineering, Nanjing 210044, China; 3. School of Mechanical & Power Engineering, Shanghai Jiaotong University, Shanghai 200030, China)  
The measurement system for PCB based on image recognition is composed of CCD camera, fitting lens, image acquisition card, horizontal workstation, PC and electric control. The system adjust focus of optical lens and working distance of horizontal workstation, according to enlargement factor and measurement precision of measurement object. In condition of the fixed distance of working distance and lens’ focus, measurement of any part of PCB can be realized by adjusting X axis and Y axis of workstation.
【Fund】: 上海市大学生科技创业基金资助(P05009)
【CateGory Index】: TN41
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