| 研究生: |
馬海華 Ma, Hoi-Wa |
|---|---|
| 論文名稱: |
以系統單晶片的架構做印刷電路板銅箔自動影像擷取系統之設計 Design of Automatic Copper Foil Image Acquisition System in Printed Circuit Board under System-on-a-Chip Structure |
| 指導教授: |
毛齊武
Mao, Chi-Wu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電機工程學系 Department of Electrical Engineering |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 51 |
| 中文關鍵詞: | 系統單晶片 、印刷電路版 、場效可程式化閘陣 、嵌入式系統 |
| 外文關鍵詞: | FPGA, PCB, SoC, Embedded System |
| 相關次數: | 點閱:84 下載:2 |
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在現今的輕工業中,電子電路的製造業佔了很重要的比重,其中包括印刷電路板(PCB)的製造。以現在電路元件的普及性,大部份的生活用品都是由電子電路所組成,所以印刷電路板的製造扮演很重要的角色,生產線上的品管成為重要的因素,因為印刷電路板的產量非常龐大,以人工的方式去篩選良好的產品實在是不合乎效率,所以自動化的篩選系統因而產生。
在印刷電路板的錯誤偵測系統裡,主要分成二大部份,第一部份為影像擷取單元,第二部份為影像處理單元。在第一部份裡主要的工作是把待偵測的產品影像透過攝影機把它們的影像資料傳送到處理單元(把類比的影像訊號轉換成數位影像訊號),第二部份則負責根據數位影像訊號而加以辨識出產品的好壞,而在辨識之前,必須要先經過PCB上的銅箔擷取動作,才可以進一步的辨認出在印刷銅箔時有沒有出現錯誤的情形,本論文便是針對PCB銅箔自動擷取的系統做研究。
大多數的自動辨識系統都使用個人電腦(PC)作為運算系統,由於個人電腦的體積龐大,需要作業系統等軟體支援,而且成本較高,不太適合應用在工業的生產線上,所以本研究的目的便是利用價格低廉的場效可程式化閘陣(FPGA),把系統實現成體積微小的獨立式系統,由於不需要任何的作業軟體,而且FPGA的價格低廉,適合大量生產應用,所以比較合乎實際的商業用途。
Currently, manufacturing of electronic circuits, including printed circuit board (PCB), has been playing an important role in the light industry. Since most appliances are made of circuit elements, which are arranged on PCB, the manufacturing of the printed circuit board has become an important branch of electronic industry. The quality control of PCB on a production line is an essential work, however, because of the huge quantity of the production of PCB, detecting the defects on PCB with human eyes can not get a good efficiency. Thus the automatic detecting system is developed.
The defect detection system can be divided mainly into two units: image acquisition and image processing.In image acquisition unit, the pre-detecting product is placed under a video camera in which images are obtained and sent to the processing unit (here, analog image signal is converted to digital image signal). In the image processing unit, quality identification is done on the product according to the input digital image signal, however, before this action, pattern of copper foil of the PCB should be acquired, therefore if there is any defect or fault on the copper foil printing, it can be recognized. This thesis is aimed at the study of the automatic copper foil acquisition system.
Personal computers (PCs) are applied to most of the automatic identification systems as processing units.However, PC is large in size, operating system and other application software are required, so it causes a higher cost, it is not well to apply on an industrial production line. The aim of this study is to develop a tiny independent system with the application of low cost filed programmable fate arrays (FPGA). It is suitable for mass production, owning to the saving of software and applying of low cost FPGA. And it is more corresponding with practical and commercial purpose.
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