JISE

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Journal of Information Science and Engineering, Vol. 40 No. 3, pp. 551-566

Design and Implementation of Automatic Punching Management System Based on Computer Vision

GANG KE^1,3, SHI WANG¹, JUN YANG^2,+, XIAOYUN XIA²,
CONGYUAN XU² AND FENG LIU³
¹College of Electronic Information
Dongguan Polytechnic University
Dongguan, P.R. China
E-mail: {keg; 2014012}@dgpt.edu.cn
²College of Information Science and Engineering
Jiaxing University
Jiaxing, 314001 P.R. China
E-mail: {juneryoung; xiaxiaoyun; cyxu}@zjxu.edu.cn
³School of Computer Science and Engineering
Macau University of Science and Technology
Macau, 999078 P.R. China
⁴Guangdong Faith Long Crystal Technology Co., Ltd.
Dongguan, 523808 P.R. China

Multistage draw-bar is an important component of suitcase. Achieving high punching precision and efficiency for the tube is crucial for large-scale production of suitcases. Aiming at the problems of low efficiency and poor accuracy of manual and semi-automatic punching for tube, this paper first design an improved real-time tube image contour matching algorithm, and then implement automatic punching management system based on computer vision. Firstly, the contour image of the tube port is obtained; Secondly, the image feature extraction and template real-time matching algorithm are designed; Thirdly, we design the communication scheme between programmable logic controller unit (PLC) and industrial computer; Finally, a couple of stepper motors are controlled by PLC to adjust the posture of the tube. In this way each tube can enters the pneumatic punching machine with the correct posture for accurate and rapid punching. The test results of the management system show that it has good stability and can realize tube automatic punching accurately and efficiently.

Keywords: automatic punching, management system, pneumatic punching machine, computer vision, contour matching

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