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Information Technology Journal
Year: 2014  |  Volume: 13  |  Issue: 4  |  Page No.: 683 - 689

A Real-time and Cost-Effective Image Processing System for Quality Assurance of Sheet Materials

Qiwu Luo, Yigang He, Wenxin Yu and Jian Zheng    

Abstract: Real-time surface defect inspection of sheet materials is increasing challenge due to the fast production rhythm and high requirement of quality. Choosing Xilinx Virtex-6 FPGA XC6VLX240T, this study presents an embedded hardware scheme for online image acquisition and parallel data processing, then realized it on a 12-layer Print Circuit Board (PCB) with a high performance of signal integrity. The equipped PCI express (PCIe) interface supports expansion with host PC smoothly which had achieved an actual peak transfer rate high up to 1.788 Gbps. At the end of this study, the designed FPGA platform was used as a sub-system to steel surface inspection equipment applying in a hot-rolled workshop. The application effects showed that this system was qualified for the real-time computational task when the maximum rolling speed is as high as 18 m sec-1. Due to the advantages of source-open, customization and cost-effectiveness, the embedded FPGA platform is standing ready for widespread adoption of quality assurance in the sheet material fields.

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