汽車電子儀表顯示裝置設(shè)計(jì)

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摘    要

隨著汽車工業(yè)的發(fā)展，人們對汽車的安全性、舒適性和節(jié)能等各方面的要求也逐漸提高，各種各樣的電子設(shè)備應(yīng)用于汽車中，這使得傳統(tǒng)的儀表遠(yuǎn)遠(yuǎn)不能滿足要求。新型的汽車儀表，多數(shù)是基于現(xiàn)場總線通信協(xié)議并且采用微電機(jī)驅(qū)動控制系統(tǒng)等新技術(shù)，并逐步向數(shù)字化、智能化、網(wǎng)絡(luò)化方向發(fā)展。

CAN總線作為一種有效支持分布式控制和實(shí)時(shí)控制的技術(shù)以其穩(wěn)定性好、可靠性高、抗干擾能力強(qiáng)、通訊速度高、維護(hù)成本低及其獨(dú)特的設(shè)計(jì)越來越受到人們的重視。CAN總線的汽車儀表是未來汽車儀表發(fā)展的趨勢和必然，基于CAN總線的汽車儀表的研究與開發(fā)具有非?，F(xiàn)實(shí)的意義。

關(guān)鍵詞：汽車儀表，CAN總線，單片機(jī)，步進(jìn)電機(jī)


 


ABSTRACT

With the development of the automobile industry,it requires thatutomobile safety,comfort and energy efficiency gradually upgrade Many kinds of electronic equipment has been used in car.This meansthat the traditional instrument is far from satisfying the demand.Newautomobile instrument,most of them is based on fieldbuscommunication protocol and use new technologies such asmicro-motor-driven control system,it is developing with digital,intelligent,network character step by step.

CAN Bus is a technology which efficiently supports distributedcontrol and real-time control.It attracted more and more people'sattention with good stability,high reliability anti-interference capability,high-speed communications,low costs and its unique design.Automobile instrument based on CAN Bus is the inevitable trend ofdevelopment and the future of automobile instrument.So theresearch and development of the automobile instrument based onCAN Bus have very realistic meaning.


Keywords：Car appearance, CAN total line, list slice machine, step enter electrical engineering


 


目   錄


中文摘要 Ⅰ

ABSTRACT Ⅱ

1緒論 1

  1.1 引言 1

  1.2 汽車儀表在國內(nèi)外的發(fā)展?fàn)顩r 3

  1. 3 國外汽車儀表發(fā)展的新特點(diǎn) 3

  1. 4 論文研究的目的和意義 6

  1. 5 課題任務(wù)、重點(diǎn)研究內(nèi)容、實(shí)現(xiàn)途徑

 2 設(shè)計(jì)概述 12

   2.1 車用主要儀表介紹

   2.2 芯片介紹

 3 系統(tǒng)硬件設(shè)計(jì)

   3.1 系統(tǒng)總體設(shè)計(jì)

    3.3.1車速傳感器的選擇

    3.3.2車速信號前置調(diào)理電路設(shè)計(jì)

    3.3.3轉(zhuǎn)速信號前置調(diào)理電路設(shè)計(jì)

   3.4模擬信號的處理

    3.4.1冷卻液水溫傳感器的選擇

    3.4.2機(jī)油壓力傳感器的選擇

    3.4.3模擬信號前置調(diào)理電路的設(shè)計(jì)

  3.5步進(jìn)電機(jī)驅(qū)動模塊

    3.5.1步進(jìn)電機(jī)介紹

    3.5.2步進(jìn)電機(jī)驅(qū)動器的選型

    3.5.3步進(jìn)電機(jī)的選型

  3.6 LCD模塊

  3.7系統(tǒng)電源設(shè)計(jì)

4 系統(tǒng)軟件設(shè)計(jì)

  4.1軟件模塊的劃分

  4.2數(shù)據(jù)采集及處理模塊

4.2.1車速里程測量程序設(shè)計(jì)

    4.2.2轉(zhuǎn)速測量程序設(shè)計(jì)

    4.2.3水溫及壓力測量程序設(shè)計(jì)

  4.3步進(jìn)電機(jī)驅(qū)動程序設(shè)計(jì)

  4.4 LCD顯示程序設(shè)計(jì)

5 結(jié)論 38

參考文獻(xiàn) 40

附錄A： 43