【正文】 系列單片機。 在夜間車流量較少的情況下， 正常東西方向和南北方向通車，通車時間均為 10秒， 相對與白天通行模式，車輛等待時間減少，提高了通行效率 。因此，單片機的學(xué)習(xí)、開發(fā)與應(yīng)用將造就一批計算機應(yīng)用與智能化控制的科學(xué)家、工程師。縱觀單片機的發(fā)展過程，可以 預(yù)示單片機的發(fā)展趨勢，大致有： (1) 低功耗 CMOS 化 MCS51 系列的 8031 推出時的功耗達 630mW，而現(xiàn)在的單片機普遍都在 100mW左右，隨著對單片機功耗要求越來越低，現(xiàn)在的各個單片機制造商基本都采用了 CMOS(互補金屬氧化物半導(dǎo)體工藝 )。早期的交通信號燈使用“固定配時”方式實行自動控制，這種方式對于早期交通流量不大的情況曾起過一定的作用。s waiting a lot of equipments of professions is closely related with calculator. Therefore, a good traffic light control system will hustle for road, give technique innovation. This paper describes a 80C52 microcontrollerbased traffic light control system, detailed description of the use 89C52 development process of the traffic light control system. Focus on a detailed analysis of the hardware designing， software programming, analysis and debugging process of the modular system, on the part of the circuit are introduced one by one. The circuit is posed of AT89C51 SCM, keyboard, digital tube and LED lamp and the realization of software simulation in Proteus. Keywords: Traffic Control； SCM； AT89C51； Simulation 安徽工程大學(xué)畢業(yè)設(shè)計（論文） III 目錄 摘 要 ...................................................................................................................................... I Abstract ...................................................................................................................................II 目錄 ....................................................................................................................................... III 插圖清單 ................................................................................................................................ V 引言 ....................................................................................................................................... VI 第 1 章 緒 論 ..................................................................................................................... 1 基于單片機的交通燈控制系統(tǒng)設(shè)計的目的及意義 .............................................. 1 單片機的發(fā)展趨勢 .................................................................................................. 2 論文的主要內(nèi)容 ...................................................................................................... 5 第 2 章 系統(tǒng)的方案設(shè)計 ..................................................................................................... 6 系統(tǒng)的正常模式 ...................................................................................................... 6 系統(tǒng)的緊急模式 ...................................................................................................... 7 第 3 章 系統(tǒng)硬件設(shè)計 ....................................................................................................... 10 單片機模塊 ............................................................................................................ 10 顯示模塊 ................................................................................................................ 15 按鍵模塊 ................................................................................................................ 15 第 4 章 系統(tǒng)軟件設(shè)計 ....................................................................................................... 17 正常工作模式子程序 ............................................................................................ 19 延時子程序 ............................................................................................................ 21 顯示倒計時子程序 ................................................................................................ 22 夜間模式子程序 .................................................................................................... 24 綠燈閃爍子程序 .................................................................................................... 26 第 5 章 系統(tǒng)測試與實現(xiàn) ................................................................................................... 27 匯編源程序 ............................................................................................................ 27 Proteus 仿真 ............................................................................................................ 28 結(jié)論與展望 ........................................................................................................................... 31 致謝 ....................................................................................................................................... 32 參考文獻 ............................................................................................................................... 33 袁建明：單片機交通控制燈的設(shè)計與實現(xiàn) IV 附錄 A 英文文獻翻譯 ....................................................................................................... 34 英文原文 ................................................................................................................ 34 中文譯文 ................................................................................................................ 41 附錄 B 交通燈控制系統(tǒng)源程序 ....................................................................................... 45 附錄 C 系統(tǒng)總電路圖 ....................................................................................................... 51 安徽工程大學(xué)畢業(yè)設(shè)計（論文） V 插圖清單 圖 21 系統(tǒng)的正常模式 ....................................................................................................... 7 圖 22 系統(tǒng)的緊急模式 ....................................................................................................... 8 圖 23 系統(tǒng)的夜間模式 ....................................................................................................... 9 圖 31 單片機與其它模塊的連接 ..................................................................................... 14 圖 32 顯示模塊 ................................................................................................................. 15 圖 33 按鍵模塊 ......................................................................................