目錄
1 緒論 １
1.1 倒車?yán)走_(dá)的研究背景與意義 １
1.2 汽車倒車?yán)走_(dá)的國內(nèi)外研究現(xiàn)狀 ２
1.2.1國外倒車?yán)走_(dá)系統(tǒng)的現(xiàn)狀 ２
1.2.2 國內(nèi)倒車?yán)走_(dá)系統(tǒng)的現(xiàn)狀 ３
1.3 本文主要研究的內(nèi)容 ３
2 系統(tǒng)的構(gòu)建與方案設(shè)計 ４
3 系統(tǒng)硬件設(shè)計 ６
3.1 控制模塊 ７
3.1.1 AT89C51單片機(jī)介紹 ７
3.1.2 控制模塊電路設(shè)計 10
3.1.3 復(fù)位電路 10
3.1.4 時鐘電路 11
3.2 語音模塊 12
3.2.1 語音芯片ISD2560介紹 12
3.2.2語音模塊電路設(shè)計 13
3.2.3 功放電路工作原理 16
3.3 電源模塊 17
4 系統(tǒng)軟件設(shè)計 19
4.1 軟件設(shè)計概述 19
4.2 系統(tǒng)主程序設(shè)計 19
4.3 語音模塊子程序設(shè)計 20
5 總結(jié) 22
5.1 結(jié)論 22
5.2 展望 22
致謝 23
參考文獻(xiàn) 24

基于單片機(jī)的倒車?yán)走_(dá)設(shè)計
              ——--語音播報部分
摘要： 本文在查閱、分析國內(nèi)外倒車?yán)走_(dá)系統(tǒng)相關(guān)技術(shù)的基礎(chǔ)上，結(jié)合最新研究成果，對倒車?yán)走_(dá)語音報警系統(tǒng)的研制進(jìn)行了深入探討和研究。該系統(tǒng)分為系統(tǒng)控制模塊和語音報警模塊，并分別對其進(jìn)行方案分析，構(gòu)建了倒車?yán)走_(dá)報警系統(tǒng)的系統(tǒng)構(gòu)架和設(shè)計方案;在硬件電路中，詳細(xì)闡述了運(yùn)用單片機(jī)技術(shù)實現(xiàn)的倒車?yán)走_(dá)語音報警系統(tǒng)的實現(xiàn)原理，分析了以AT89C51單片機(jī)為主控單元的系統(tǒng)硬件和軟件設(shè)計，并對該系統(tǒng)進(jìn)行了試驗和誤差分析，給出了本系統(tǒng)的穩(wěn)定性指標(biāo)。
試驗結(jié)果顯示，該系統(tǒng)對有限距離的及時播報具有較高的精度，實現(xiàn)了倒車提示和距離報警功能，其主要技術(shù)指標(biāo)達(dá)到了系統(tǒng)設(shè)計要求。

關(guān)鍵詞：倒車?yán)走_(dá)，語音報警，單片機(jī)

Design of Automobile Back a car Radar System Based on SCM
                      ——Part Of Voice Alarm System

Abstract:The thesis mainly analyzed deeply the research on the design of Car Reversing Radar-System. Firstly according to the latest researches in domestic and foreign countries. the system consisted of the Module Control Module and Display or Voice Alarm Module.The paper discussed the scheme of two module and selected the best system scheme in the paper. Secondly it presented the theory and characters of Voice Alarm-Measurement and analyzed in detail design of the hardware and software based on the AT89C51microcontroller. Thirdly the fuzzy control algorithm is proposed,the simulation is introduced into the system.At last. through the experiment and error analysis  it proved the stability of the system.
To monitor its reliability, imitations of main cases of the system have been carried out and stable instructions of voice alarm system have already been received,which verify its efficiency and feasibility.
Key words: reversing radar, voice alarm, SCM