汽車中高端智能儀表設(shè)計(jì)

1.9萬(wàn)字 44頁(yè) 原創(chuàng)作品，已通過(guò)查重系統(tǒng)



目錄
第1章 緒論................................................1
1.1 課題研究的目的和意義.........................................1
1.2 國(guó)內(nèi)外汽車儀表的研究現(xiàn)狀.....................................1
1.3 本課題研究的主要內(nèi)容.........................................2
第2章 系統(tǒng)整體方案設(shè)計(jì)....................................3
2.1 CAN總線儀表的功能..........................................3
2.2 系統(tǒng)的設(shè)計(jì)原則..............................................3
2.3 系統(tǒng)的總體技術(shù)方案..........................................4
第3章 CAN通信原理與節(jié)點(diǎn)設(shè)計(jì)..............................5
3.1 CAN總線原理...............................................5
3.2 儀表CAN節(jié)點(diǎn)的設(shè)計(jì).........................................6
第4章 硬件模塊選型與電路設(shè)計(jì)..............................8
4.1 系統(tǒng)總體設(shè)計(jì).................................................8
4.2 微控制器的選擇...............................................9
4.2.1 處理器的選型...............................................9
4.2.2 ARM內(nèi)核簡(jiǎn)介................................................9
4.2.3 LPC2119簡(jiǎn)介................................................9
4.3 步進(jìn)電機(jī)驅(qū)動(dòng)電路設(shè)計(jì).........................................10
4.4 LCD驅(qū)動(dòng)電路及EEPROM設(shè)計(jì)....................................13
4.4.1 LCD驅(qū)動(dòng)器簡(jiǎn)介.............................................13
4.4.2 總線概述..................................................14
4.4.3 LCD驅(qū)動(dòng)電路設(shè)計(jì)...........................................14
4.4.4 EEPROM設(shè)計(jì)................................................15
4.5 脈沖信號(hào)處理電路............................................16
4.6 A/D轉(zhuǎn)換模塊.................................................18
4.7 其他外圍器件電路設(shè)計(jì)........................................19
4.7.1 電源模塊..................................................19
4.7.2 儀表背光調(diào)節(jié)電路..........................................21
4.7.3 指示燈組設(shè)計(jì)..............................................23
4.7.4 上位機(jī)通信設(shè)計(jì)............................................24
4.7.5 語(yǔ)音報(bào)警電路設(shè)計(jì)..........................................24
4.8 系統(tǒng)抗干擾設(shè)計(jì)..............................................25
第5章 軟件功能模塊設(shè)計(jì)....................................26
5.1 任務(wù)劃分與分析...............................................26
5.2 主程序.......................................................27
5.3 CAN總線收發(fā)以及中斷任務(wù).....................................29
5.4 脈沖量測(cè)量任務(wù)..............................................30
5.5 步進(jìn)電機(jī)驅(qū)動(dòng)任務(wù)............................................31
5.6 LCD顯示任務(wù).................................................33
5.7 A/D轉(zhuǎn)換采樣任務(wù).............................................34
5.8 危機(jī)報(bào)警和看門狗任務(wù)........................................35
結(jié)論............................................................................................................37
致謝...........................................................................................................38
參考文獻(xiàn).....................................................................................................39



摘要 本課題設(shè)計(jì)的一種新型嵌入式數(shù)字式組合儀表，核心MCU采用高性能低功耗的32位ARM7芯片LPC2119，擁有步進(jìn)電機(jī)、LCD等多種顯示方式，可對(duì)車速、行駛里程、發(fā)動(dòng)機(jī)轉(zhuǎn)速、冷卻水溫度、剩余燃油量、電壓等多個(gè)參數(shù)進(jìn)行實(shí)時(shí)測(cè)量和顯示。系統(tǒng)還預(yù)留了CAN總線接口，便于功能擴(kuò)展或者與汽車其他電子控制系統(tǒng)聯(lián)接通信。


關(guān)鍵詞：汽車儀表，嵌入式，CAN總線