嵌入式深溝球軸承裝配缺陷視覺檢測(cè)系統(tǒng)硬件設(shè)計(jì)

電子機(jī)電論文編號(hào):JD1027  論文字?jǐn)?shù):13745,頁(yè)數(shù):38，有開題報(bào)告，任務(wù)書，外文翻譯，原理圖

目　錄
前　言 1
第1章 緒論 3
1.2　視覺檢測(cè)技術(shù)的國(guó)內(nèi)外發(fā)展?fàn)顩r 4
1.2.1　軸承檢測(cè)機(jī)器視覺系統(tǒng)的實(shí)施方案 4
1.2.2  兩類系統(tǒng)方案的對(duì)比 5
1.3　嵌入式系統(tǒng)的特點(diǎn)及組成 5
1.4　嵌入式視覺檢測(cè)系統(tǒng)硬件設(shè)計(jì)流程 6
1.4.1  檢測(cè)要求及所要達(dá)到的技術(shù)指標(biāo) 6
1.4.2　檢測(cè)系統(tǒng)設(shè)計(jì)流程圖 7
1.5　本設(shè)計(jì)論文的主要工作 8
第2章 嵌入式視覺檢測(cè)系統(tǒng)硬件總體設(shè)計(jì) 9
2.1　嵌入式視覺檢測(cè)系統(tǒng)硬件設(shè)計(jì)方案 9
2.1.2　嵌入式視覺檢測(cè)系統(tǒng)的總體結(jié)構(gòu) 10
2.2  嵌入式視覺檢測(cè)系統(tǒng)工作流程 12
第3章　嵌入式視覺檢測(cè)系統(tǒng)硬件模塊設(shè)計(jì) 13
3.1　光源與照明方式的設(shè)計(jì) 13
3.1.1　光源的選擇 13
3.1.2   LED光源的特點(diǎn) 13
3.2　鏡頭的選擇 14
3.3　CCD攝像頭的選用 14
3.3.1　攝像頭的主要傳感部件CCD簡(jiǎn)介 14
3.3.2  IL-P3-B線陣CCD 15
3.4　視頻解碼芯片的選擇 16
3.4.1　視頻解碼芯片TLC5540的介紹 16
3.4.2　A/D轉(zhuǎn)換電路 17
3.5　FIFO器件的運(yùn)用 18
3.6　基于CPLD的數(shù)字邏輯電路設(shè)計(jì) 19
3.6.1 可編程邏輯芯片EPM7128S簡(jiǎn)介 19
3.7　DSP系統(tǒng)的電路設(shè)計(jì) 20
3.7.1　DSP芯片的選用 20
3.7.2　電源電路的設(shè)計(jì) 22
3.7.3　時(shí)鐘電路的選擇與設(shè)計(jì) 22
3.7.4　DSP芯片的硬件復(fù)位電路設(shè)計(jì) 23
3.7.5　JTAG電路設(shè)計(jì) 24
3.8  DSP存儲(chǔ)器擴(kuò)展 25
3.8.1　外擴(kuò)數(shù)據(jù)存儲(chǔ)器 25
3.8.2　外擴(kuò)程序存儲(chǔ)器 26
結(jié)　論 28
參考文獻(xiàn) 29
致　謝 31
附　錄 32

摘　要
 我國(guó)是世界第一大軸承生產(chǎn)國(guó)，軸承工業(yè)已成為國(guó)民經(jīng)濟(jì)的重要組成部分。但我國(guó)軸承的生產(chǎn)技術(shù)水平與國(guó)外相比，還存在較大差距，尤其體現(xiàn)在裝配缺陷的自動(dòng)檢測(cè)及質(zhì)量控制上。
 目前，軸承生產(chǎn)的自動(dòng)化程度日益提高，傳統(tǒng)的人工檢測(cè)方式已難以保證產(chǎn)品的質(zhì)量。機(jī)器視覺檢測(cè)技術(shù)具有檢測(cè)速度快、檢測(cè)精度高、非接觸等優(yōu)點(diǎn)，將其應(yīng)用于軸承裝配缺陷的自動(dòng)檢測(cè)，可以有效的克服人工檢測(cè)方式的不足，并提高軸承生產(chǎn)的生產(chǎn)效率與軸承的產(chǎn)品質(zhì)量。視覺檢測(cè)系統(tǒng)要完成軸承的在線檢測(cè)，必須提高視覺圖像的處理速度；采用數(shù)字信號(hào)處理器(DSP)能夠很好的完成自動(dòng)生產(chǎn)線上軸承裝配缺陷的檢測(cè)任務(wù)。
 在滾動(dòng)軸承的自動(dòng)裝配過程中，鉚釘和滾動(dòng)體的漏裝是最為常見的裝配缺陷。本設(shè)計(jì)將針對(duì)這一問題，利用光源、CCD攝像頭、DSP以及其它外圍芯片開發(fā)出能夠?qū)�軸承鉚釘、滾動(dòng)體裝配情況進(jìn)行自動(dòng)檢測(cè)的在線檢測(cè)系統(tǒng)。該設(shè)計(jì)對(duì)系統(tǒng)光學(xué)照明技術(shù)、圖像采集、視頻解碼芯片、DSP芯片等的選型做了分析，進(jìn)而，設(shè)計(jì)出各個(gè)功能模塊的電路圖。本系統(tǒng)具有功能集成、結(jié)構(gòu)簡(jiǎn)單、編程靈活的特點(diǎn)，滿足了檢測(cè)的實(shí)時(shí)性要求。本設(shè)計(jì)可望成為軸承生產(chǎn)企業(yè)解決滾動(dòng)體、鉚釘裝配缺陷的檢測(cè)技術(shù)甁頸的重要技術(shù)參考。

關(guān) 鍵 詞：滾動(dòng)軸承，視覺檢測(cè)，裝配缺陷，DSP，硬件設(shè)計(jì)
HARDWARE DESIGN OF EMBEDDED VISUAL DETECTION SYSTEM FOR DEEP GROOVE BALL BEARING ASSEMBLY DEFECT
ABSTRACT
 China is the world's largest producer of bearings, the bearings industry has become an important economic component. But in comparison with foreign countries, there still exists a wide gap of the technology level of bearings production between ours and the foreign ones, especially in the automatic control and quality control of assembly defect.
 Currently, the degree of automation is increasing in bearings production, while the traditional manual method of detection is difficult to guarantee the quality of their product. The technology of machine vision detection with a speediness detection, high precision, non-contact advantages, will be applied to the automatic detection of bearing assembly, can effectively overcome the shortcomings of artificial detection way, improve the efficiency and quality of production. Visual detection system have to complete on-line detection of bearing, so that we have to improve the visual image processing speed; Digital signal processor (DSP) can be well complete the detection task for bearing in automatic production line.
 The leakage of rivets and rolling balls are the most common assemble defects in the automatic assembly process. In response to this problem, the design will developed an online automatic testing system for detecting the leakage of rivets and rolling balls, by using lamp-house, CCD camera, DSP chip and other external chips. The design made analysis about lighting techniques, image acquisition, video decoder chips, the selection of DSP chip, further, designing some functional circuit module. The system has integrated function, simple structure, flexible programming features to satisfy the demand of real-time detection. The design is expected to be an important technical reference for resolving the technology bottle-neck of detecting the missing rivets and rolling balls in bearings enterprises.
KEY WORDS: rolling bearing, visual inspection, assembly defect, DSP, hardware design