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Reserch of Face-To-Face Small-Gap Machine Vision System

Author: LiuXueJiao
Tutor: LiZiJie
School: Taiyuan University of Technology
Course: Physical Electronics
Keywords: Machine Vision Technology Image processing Optical design Automatic control technology
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 17
Quote: 1
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Abstract


Since the 1990s, the volume of the mobile phone, personal digital assistants (PDAs), laptop computers, digital cameras and other consumer electronics products are getting smaller and smaller, faster and faster work, more and more high degree of intelligence. These rapid changes in electronic packaging and assembly technology has brought many challenges and opportunities, but the electronic packaging and assembly manual equipment there are still slow, accuracy and low product quality and yield can not be guaranteed. Automation equipment is a good solution to the electronic packaging and assembly manual device speed and accuracy problems, Design and Implementation of this automation equipment depends on the core technology of machine vision systems. In this issue of machine vision technology quickly and accurately identify the chip and the substrate, high-precision machine actuators driven by ICC (industrial control computer) complete the chip and the substrate. The subject using optical technology, camera technology, microcomputer control technology, image processing technology to identify the target to complete the automatic alignment. For the development of efficient, stable, accurate, automated machine vision system provides a practical design. Topics from reality, machine vision and motion control technology combine to develop a face-to-face small gap machine vision systems. This paper introduces the machine vision technology and its components, the selection of the various parts of the application significance, domestic and foreign development; Then it focuses on the overall design of a small gap of machine vision systems, detailed description of the overall design ideas, part of the principle of selection, design principles, as well as the selection of the system. Wherein difficulty is due the welding object substrate and the chip is not usually transparent material, to ensure its work on the bit precision of the chip and the substrate spacing is very small, can not be used the combination of a conventional CCD camera direct imaging, instead of using a specially designed optical probe, to achieve small Pitch optical imaging function; and then describes the basics of image processing technology, the basic algorithm. Finally, the machine vision system automatic bit algorithm design and the use of the algorithm to carry out an experiment to test the performance of equipment. By analysis of the experimental data, for product testing, stability, speed and accuracy of the test the device performance of the machine vision system meets the requirements.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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