【正文】 機的交通燈控制系統(tǒng)系 別 自 動 化 工 程 系專業(yè)名稱 自 動 化班級學號 5060535學生姓名 彭 川指導教師 任 彥 碩 2022 年 6 月 18 日 東北大學秦皇島分校畢業(yè)設計（論文） 第 I 頁基于單片機的交通燈控制系統(tǒng)摘 要十字路口車輛穿梭，行人熙攘，車行車道，人行人道，有條不紊?？康木褪浅鞘薪煌ㄐ盘枱舻淖詣又笓]控制系統(tǒng),來實現(xiàn)交通的井然有序。本文分析了傳統(tǒng)交通燈存在的缺點，設計了一種新型交通燈控制系統(tǒng)，突破了傳統(tǒng)固定配時模式,可依據(jù)實時交通流量靈活運行?；贏T89C51單片機的交通燈模擬控制系統(tǒng),該系統(tǒng)能根據(jù)實際車流量情況通過外部鍵盤增加或減少通行禁止時間。針對復雜多變的路況環(huán)境，特別增設了緊急情況處理模塊，改善了十字路口的通行效率,進一步完善了交通燈控制系該系統(tǒng)具有實用性強、操作簡單、擴展性好等特點。關鍵詞:單片機，交通燈，Proteus 仿真 東北大學秦皇島分校畢業(yè)設計（論文） 第 II 頁traffic light control system based on MCUAuthor：Peng Chuan Tutor：Yanshuo RenAbstract Pedestrian crossing transports, bustling, garage, pedestrian humanitarian, orderly driveway. The urban traffic signal lights of the mand and control system, automatic to traffic orderly. Urban traffic control system is designed for automatic mand urban traffic control system is one of the most important parts of it. This paper discusses the traffic simulation based on AT89C51 control system, this system can according to actual situation through traffic outside the keyboard to increase or decrease traffic banned. Using LED digital display its corresponding pipe using light emitting diode, the actual situation of traffic simulation. According to the plex conditions, especially an environmental emergency module, improve the efficiency of the intersection traffic lights, further improve the control systems with practical, simple operation, good scalability. Using the powerful Proteus simulation software simulation function, can be flexible, efficient electronic circuit design.Key Words: MCUAT89C51, traffic light , Proteus emulation 東北大學秦皇島分校畢業(yè)設計（論文） 第 III 頁目 錄1．緒論 ..............................................................1 歷史背景與意義 ....................................................................................................1 國內(nèi)外研究現(xiàn)狀與發(fā)展趨勢 ................................................................................2 論文研究的主要內(nèi)容 ............................................................................................32．交通燈的設計方案 ..................................................4 交通燈的設計要求 ................................................................................................4 交通燈的控制要求 ................................................................................................43．單片機概述 ........................................................6 單片機技術(shù)的發(fā)展與應用 ....................................................................................6 單片機技術(shù)的發(fā)展 ............................................6 單片機技術(shù)的應用 ............................................6 單片機的選型 ........................................................................................................8 AT89C51 片內(nèi)各功能部件 ...................................................................................9 微處理器（CPU） .............................................9 數(shù)據(jù)處理器（RAM） ...........................................9 程序存儲器(Flash) ...........................................9 中斷系統(tǒng) ....................................................9 定時器/計數(shù)器 ..............................................10 全雙工串行口 ...............................................12 并行輸入輸出（I/O）口 ......................................12 特殊功能寄存器（SFR） ......................................12 AT89C51 內(nèi)部電源及引腳 .................................................................................12 單片機最小系統(tǒng) ..................................................................................................14 時鐘電路 ...................................................14 復位電路 ...................................................154．系統(tǒng)硬件電路的設計 ...............................................16 系統(tǒng)總框圖 ..........................................................................................................16 控制系統(tǒng) ..............................................................................................................16 信號燈電路 ..........................................................................................................16 時間顯示電路 ......................................................................................................17 緊急轉(zhuǎn)換開關電路 ..............................................................................................17 驅(qū)動電路 ..............................................................................................................18 系統(tǒng)硬件 ..............................................................................................................215．系統(tǒng)的程序設計 ...................................................22 程序設計思想 ......................................................................................................22 1S定時 ..................................................................................................................22 相應程序代碼 ......................................................................................................23 東北大學秦皇島分校畢業(yè)設計（論文） 第 IV 頁 程序設計流程圖 ..................................................................................................24 ....................................................27 KEIL C51 概述 ......................................................................................................27 KEIL C51 簡介 ......................................................................................................27 KEIL 的使用 .........................................................................................................28 PROTEUS 的電路設計和仿真 ......................................32 PROTEUS 仿真軟件簡介 .......................................................................................32 用 PROTEUS 繪制電路圖 ......................................................................................32 PROTUES 對單片機的仿真 ...................................................................................33結(jié) 論 ..........