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《Chinese Journal of Sensors and Actuators》 2007-08
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Study on On-Line Surface Defect Detection Vision System for Steel Strip

ZHANG Hong-tao1,DUAN Fa-jie1,DING Ke-qin2,YE Sheng-hua11.State Key Lab of Precision Measurement Technology & Instruments,Tianjin University,Tianjin 300072,China;2.Centre of Boiler and Pressure Vessel Inspection and Research,Beijing 100013,China  
A suit of intelligent non-contact detection system is designed to inspect surface defects on-line for steel strip.This inspection system consists of a new LED line light source,bright and dark field combined imaging optical system,high speed and high resolution linear CCD sensor,embedded FPGA processing board and auto-classifier subsystem.Main surface defects such as bubble,inclusion,rolling skin,scratch and roll-mark can be detected nondestructively,and these surface defects are classed automatically by Bayes theory.The steel strip is 1 800 mm at the most in width,in-line maximum speed is 1.5 m/s,detection resolution is 0.8 mm×0.8 mm and detection error is less than 1 mm in dimension.
【Fund】: 国家科技部科研院所专项基金资助(SY01院所专项-01)“跨世纪优秀人才支持计划”
【CateGory Index】: TH878
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【Co-citations】
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