| QFP芯片外观视觉检测系统及检测方法 |
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| 引用本文： | 郑金驹,李文龙,王瑜辉,罗明成. QFP芯片外观视觉检测系统及检测方法[J]. 中国机械工程, 2013, 24(3): 290-294,301 |
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| 作者姓名： | 郑金驹 李文龙 王瑜辉 罗明成 |
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| 作者单位： | 华中科技大学数字制造装备与技术国家重点实验室,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(50835004,50975112);中央高校基本科研业务费资助项目(2012QN251) |
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| 摘 要： | 基于QFP芯片的管脚外观检测的需要,开发了基于机器视觉的QFP芯片外观检测系统,并简要介绍了该系统的硬件系统和软件系统。为实现管脚外观检测要求,采用Canny算子边缘检测算法针对QFP管脚的图像进行处理,着重论述了管脚栈高的检测方法及基于三点法的管脚共面度的检测方法。测试结果表明,该外观检测系统能达到在线生产的工艺要求。
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| 关 键 词： | QFP外观检测 机器视觉 Canny算子 三点法 |
QFP Chip Visual Inspection System and Its Inspection Method |
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| Zheng Jinju Li Wenlong Wang Yuhui Luo Mingcheng. QFP Chip Visual Inspection System and Its Inspection Method[J]. China Mechanical Engineering, 2013, 24(3): 290-294,301 |
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| Authors: | Zheng Jinju Li Wenlong Wang Yuhui Luo Mingcheng |
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| Affiliation: | Zheng Jinju Li Wenlong Wang Yuhui Luo Mingcheng State Key Laboratory of Digital Manufacturing Equipment & Technology, Huazhong University of Science and Technology,Wuhan,430074 |
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| Abstract: | In order to inspect the appearance of QFP chip lead, an automatic inspection system based on machine vision was designed. Hardware structure and software system were introduced herein. In the software system, Canny algorithm was successfully applied to detect the edge of the QFP chip lead. After that, the inspection method of standoff and the detecting method based on three-point seating plane of co-planarity were discussed. Finally, the testing experiments with respect to the QFP chip visual inspection system were carried out, which achieves satisfactory results. |
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| Keywords: | QFP visual inspection machine vision Canny algorithm three-point seating plane method |
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