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Light Source Optimization Technology of Paper Defect Detection System Based on Stroboscopic Imaging
Received:March 19, 2021  
DOI：10.11980/j.issn.0254-508X.2021.08.011
Key Words:stroboscopic imaging  paper defect detection  gray uniform value  gray uniformity
Fund Project:陕西省教育厅自然专项（17JK0645）；西安市科技计划项目（2020KJRC0146）。
Author NameAffiliationPostcode
TANG Wei College of Electrical and Control Engineering， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
CHENG Shuangshuang* College of Electrical and Control Engineering， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
FENG Bo College of Electrical and Control Engineering， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021
Haojing College of Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 712046 		712046
QU Yunhui College of Electrical and Control Engineering， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
WANG Mengxiao Shaanxi Xiwei Process Automation Engineering Co.， Ltd.， Xianyang， Shaanxi Province， 712000 712000
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Abstract:Aimed at the horizontal wave phenomenon in the process of collecting paper images， the reasons for the horizontal ripples were summarized through the inverse analysis of Shannon’s sampling theorem. Combined with stroboscopic imaging technology， a speed sensor， A/D conversion circuit and LED stroboscopic circuit were used to design a synchronization control system suitable for paper machine speed， camera scanning frequency and LED light source stroboscopic control. With the paper defect detection device independently designed by the research group， the effectiveness of the control system was verified by collecting paper images at different speeds of the paper machine. The results showed that the control system could effectively improve the imaging quality of paper， laying a good foundation for the detection and identification of paper defects.
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