【正文】 貴陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） 本科畢業(yè)設(shè)計(jì)（論文） 基于 CAN 總線汽車加速度信息采集系統(tǒng)設(shè)計(jì) 學(xué) 院： 機(jī)械工程學(xué)院 專 業(yè)： 汽車服務(wù)工程 班 級(jí)： 11 級(jí)汽車服務(wù) 學(xué) 號(hào)： 111400401063 學(xué)生姓名： 劉逍 指導(dǎo)老師： 丁小可 20xx 年 6 月 1 日 貴陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） I 基于 CAN 總線汽車加速 度信息采集系統(tǒng)設(shè)計(jì) 摘 要 隨著通訊技術(shù) .計(jì)算機(jī)技術(shù)的快速發(fā)展 ,CAN 總線技術(shù)隨之應(yīng)運(yùn)產(chǎn)生 ,推動(dòng)了測(cè)控領(lǐng)域的網(wǎng)絡(luò)化進(jìn)程 ,CAN總線 .屬于現(xiàn)場(chǎng)總線的范疇 ,CAN總線以其基礎(chǔ)構(gòu)成的分布式網(wǎng)絡(luò)方便 .低成本實(shí)現(xiàn)了工程實(shí)際要求 ,已經(jīng)逐漸成為了當(dāng)今自動(dòng)化領(lǐng)域發(fā)展的熱點(diǎn)之一。本文用 CAN 總線技術(shù)對(duì)汽車加速度進(jìn)行研究 ,討論了汽車加速度變化所帶來(lái)的變化。繼而可以理解和使用 CAN 總線的特點(diǎn)與優(yōu)勢(shì)所在 ,并敘述了光電檢測(cè)技術(shù)特點(diǎn)及發(fā)展趨勢(shì)。而后 ,針對(duì)本文所選用的現(xiàn)場(chǎng)總線 —— CAN 總線進(jìn)行了研究討論 ,論述了 CAN 總線的工作原理并針 對(duì) CAN 總線的性能特點(diǎn)詳細(xì)分析了其分層結(jié)構(gòu)協(xié)議和數(shù)據(jù)幀結(jié)構(gòu)。針對(duì)光電檢測(cè)領(lǐng)域的發(fā)展趨勢(shì) ,本文設(shè)計(jì)了一種基于 CAN總線汽車加速度的數(shù)據(jù)采集系統(tǒng) ,以 CAN總線作為通信總線 ,采用了以 DSP 芯片 TMS320F2812 為主控制器 ,外接刀 D 轉(zhuǎn)換芯片 AD977A進(jìn)行數(shù)據(jù)采集轉(zhuǎn)換 ,并通過 CAN 總線將數(shù)據(jù)傳輸至顯示器。軟件采用 TI 公司開發(fā)的 CCS作為開發(fā)環(huán)境 ,軟件設(shè)計(jì)采用模塊化設(shè)計(jì)方法完成了各個(gè)子模塊的設(shè)計(jì) ,通過對(duì)主程序的仔細(xì)分析與設(shè)計(jì) ,實(shí)現(xiàn)了各個(gè)任務(wù)的合理調(diào)度 ,達(dá)到了系統(tǒng)的設(shè)計(jì)要求 .嵌入式工控機(jī)顯示界面采用 MCGS 組態(tài)軟件 編寫 ,用以實(shí)現(xiàn)數(shù)據(jù)的處理和顯示。該系統(tǒng)通用性好 .可靠性高 .傳輸速率快 .操作方便 ,具有較好的應(yīng)用前景。 關(guān)鍵詞 : CAN 總線 、 數(shù)據(jù)采集 、 汽車加速度 、 單片機(jī)。 貴陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） II Abstract With the development of munication technology The development of puter technology, can bus technology will be shipped to produce, promote the process of work in the field of measurement and control, can bus. Belongs to the category of field bus, can bus as a new bus technology, which has a high performance。 The characteristics of high reliability, convenient bus at the base of the distributed work. Low cost to realize the practical requirements of the project, has gradually bee the one of the hot topics in the automation domain today in this paper, by CAN Bus Technology on vehicle speed research, discusses the changes in the vehicle acceleration changes brought about by the. Then we can understand and use the CAN bus characteristics and advantages, and describes the characteristics and development trend of photoelectric detection technology and then, in the field bus by a CAN bus research discussion, discusses the working principle of CAN bus and the CAN bus can analyze the characteristics of the hierarchical structure for the development trend of the field of photoelectric detection protocol and data frame structure this paper designs a data acquisition system of CAN bus based on acceleration, the CAN bus as the munication bus, using DSP chip TMS320F2812 as the main controller, the external cutter Dconversion chip AD977A for data acquisition and conversion, and transmits the data to the display byCAN bus. Software using CCS of TI pany development as a development environment, software design using modular design method to plete the design of each sub module, through careful analysis and design of the main program, realize the reasonable scheduling of each task, meets the system design requirements. embedded industrial puter display interface using MCGS configuration software written to realize the data processing and display the system has good universality! High reliability! Fast transmission speed, convenient operation, with good prospects of application。 Keywords: CAN bus. data acquisition. automobile acceleration。 貴陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） III 目 錄 基于 CAN總線汽車加速度信息采集系統(tǒng)設(shè)計(jì) ................................................................................... I 摘 要 ........................................................................................................................................... I Abstract ........................................................................................................................................ II 目 錄 ..........................................................................................................................................III 第 1 章 緒論 ................................................................................................................................. 5 什么是 CAN 總線 ............................................................................................................. 5 CAN 總線的產(chǎn)生與發(fā)展 .................................................................................................... 5 CAN 總線的產(chǎn)生背景 .................................................................................................... 5 CAN 總線的發(fā)展過程 ..................................................................................................... 5 CAN 總線的特 點(diǎn) .............................................................................................................. 6 CAN 總線的優(yōu)點(diǎn) .............................................................................................................. 6 光電檢測(cè)領(lǐng)域 .................................................................................................................. 7 光電檢測(cè)的特點(diǎn) ............................................................................................................. 7 光電檢測(cè)技術(shù)的發(fā)展趨勢(shì) ..