汽車can總線技術(shù)研究





中文摘要


　　　對正在迅速發(fā)展之中的汽車CAN總線技術(shù)進(jìn)行了研究。

　　　自行設(shè)計(jì)、研制了一個(gè)典型的能實(shí)際運(yùn)行的汽車電控系統(tǒng)，包括CAN總線、電控單元以及控制元件（電機(jī)）等。該系統(tǒng)總共由三個(gè)節(jié)點(diǎn)組成，并通過控制器局域網(wǎng)(CAN-bus)連接起來，形成一個(gè)基于CAN總線的通信網(wǎng)絡(luò)。第一個(gè)CAN節(jié)點(diǎn)是由計(jì)算機(jī)構(gòu)成的控制平臺,接收用戶指令，通過CAN總線控制另兩個(gè)節(jié)點(diǎn)上的電機(jī)，并實(shí)時(shí)顯示它們反饋的運(yùn)行情況。第二個(gè)CAN節(jié)點(diǎn)保持與節(jié)點(diǎn)1的通信,根據(jù)節(jié)點(diǎn)1的要求實(shí)時(shí)監(jiān)控一個(gè)電機(jī)。第三個(gè)節(jié)點(diǎn)的ID不同于第二個(gè)CAN節(jié)點(diǎn)，監(jiān)控另一個(gè)電機(jī)。整個(gè)系統(tǒng)已經(jīng)完成并調(diào)試通過，測試證明完全符合車上通信網(wǎng)絡(luò)的需要。

　　　針對實(shí)際應(yīng)用，提出了一個(gè)在摩托車中應(yīng)用CAN技術(shù)的解決方案，分析了方案的特點(diǎn)及工作原理，并完成了初步設(shè)計(jì)。

　　　對包括CAN總線的汽車電控系統(tǒng)研發(fā)的步驟、方法以及規(guī)律性等進(jìn)行了探索，并為我校本科教學(xué)中開設(shè)相關(guān)實(shí)驗(yàn)進(jìn)行了準(zhǔn)備工作，提出了具體的設(shè)想與方案。


關(guān)鍵詞  汽車  電子控制  CAN總線  通信  網(wǎng)絡(luò)


 


 


 




　　　　　　　

　　　　　　　

　　　　　　　畢業(yè)設(shè)計(jì)說明書（論文）外文摘要


Title    Study of Vehicle’s CAN-bus Technique          

　　　　

                                                           


Abstract

Vehicle’s CAN-bus technique which is in quick development is thorough studied.

A typical and operable vehicle’s electrical control system is designed and developed and the system includes the CAN-bus, the electrical unit and the control component etc. Three nodes in the system communicate through a CAN-bus. The system uses commands from a CAN node and sends this message through a CAN-bus to other two CAN nodes. They are controlling a DC motor separately. The first CAN node acts like a user control panel. It monitors all user inputs and displays the real time motor speed. The second CAN node is responsible for generating various signals for motor control, and responsible for monitoring the feedback signal and relays its data to the first CAN node. The third node runs like the second CAN node, but the ID is different form the second CAN node. The whole system was already completed and can properly operate. More important, the system verifies that the CAN-bus can meet the demand of the communication in vehicle completely. Aiming at the practical application, a solution for applying the technique of CAN-bus in motorcycle was put forward, it’s characteristics and work principles are analyzed, and the preliminary design is done. The development procedure, method and rules etc. of vehicle’s electrical control system that includes CAN-bus are investigated. Setting up the related experiment for education purpose is prepared, and some proposal is given.


Key words: Vehicle Electrical control CAN-bus Communications Network


 


 


 




 目   次


緒論…………………………………………………………………………………………… 4

　　1.1 汽車CAN總線技術(shù)的研究意義…………………………………………………… 4

　　1.2 汽車CAN總線技術(shù)的發(fā)展現(xiàn)狀…………………………………………………… 4

　　1.3 本課題的主要研究內(nèi)容和方法………………………………………………… 6

　　2 CAN總線系統(tǒng)總體方案設(shè)計(jì)………………………………………………………… 8

　　2.1 系統(tǒng)方框圖……………………………………………………………………… 8

　　2.2 CAN總線主要參數(shù)的選擇……………………………………………………… 9

　　2.3 CAN總線應(yīng)用層的定義……………………………………………………………12

　　2.4 程序設(shè)計(jì)方法選擇 ………………………………………………………………12

　　3 基于單片機(jī)的CAN節(jié)點(diǎn)的CAN接口設(shè)計(jì)……………………………………………13

　　3.1 接口硬件設(shè)計(jì) ……………………………………………………………………14

　　3.1.1接口元器件選擇…………………………………………………………………15

　　3.1.2 接口電路圖設(shè)計(jì)………………………………………………………………15

　　3.2 接口軟件設(shè)計(jì) ……………………………………………………………………15

　　3.2.1 初始化子程序的設(shè)計(jì)…………………………………………………………15

　　3.2.2 發(fā)送子程序的設(shè)計(jì)……………………………………………………………16

　　3.2.3 接收子程序的設(shè)計(jì)……………………………………………………………16

　　4 基于單片機(jī)的CAN節(jié)點(diǎn)的功能部分設(shè)計(jì)……………………………………………18

　　4.1功能部分硬件設(shè)計(jì) ……………………………………………………………18

　　4.1.1元器件的選擇 ………………………………………………………………18

　　4.1.2電路..