【正文】 學(xué)士學(xué)位論文（設(shè)計） 題 目： 基于 AT89S52單片機的 交通燈控制系統(tǒng)設(shè)計 姓 名： 學(xué) 號： 學(xué) 院： 工學(xué)院 專業(yè) /屆別： 工業(yè)電氣自動化 /2021 屆 指導(dǎo)教師： 職 稱： 教授 摘 要 交通燈對于當(dāng)今社會是不可或缺的存在，隨著我國的日益強盛，作為代步工具，車輛正在迅速的替代自行車，如雨后春筍般的出現(xiàn)在城市道路中。因此交通燈在城市交通的存在有著非常重要的意義。本文主要以單片機為核心， LED 為顯示信號同時運用到定時器來設(shè)計和制作交通燈。根據(jù)實際路況分析進行硬件設(shè)計，并對其進行軟件編程。進而用 Proteus 7 Professional 仿真，更直觀的觀察其不足之處以便對其改善。 關(guān)鍵詞：單片機； Proteus 7 Professional； LED Abstract Nowadays， Traffic lights can’t country is stronger and sronger,for Instead walk,cars are are rapidly alternative bike appeared mushroomed in the city ,traffic light has a very important significance in paper microcontroller as the core, LED display signals simultaneously applied to the timer to the design and production of traffic lights. According to the actual traffic analysis hardware design, and its software programming. Further simulation with Proteus 7 Professional, and more intuitive to observe the deficiencies of its improvement. 目錄 第一章 緒論 .................................................................................................................... 1 意義 ...................................................................................................................... 1 交通燈研究的發(fā)展概況 ...................................................................................... 1 主要內(nèi)容 .............................................................................................................. 1 第二章 整體設(shè)計方案 ..................................................................................................... 1 整體分析 ............................................................................................................... 1 功能要求分析 ....................................................................................................... 1 方案比較 .............................................................................................................. 2 方案選定 .............................................................................................................. 2 最終方案 .............................................................................................................. 2 第三章 硬件設(shè)計 ............................................................................................................ 2 整體分析 ............................................................................................................... 2 AT89S52 ...................................................................................................... 2 七段數(shù)碼管 ................................................................................................ 4 發(fā)光二極管 .................................................................................................... 6 單元電路設(shè)計 .................................................................................................... 7 CPU 最小系統(tǒng)電路圖 ...................................................................................... 7 串行口通信模塊 ............................................................................................ 7 顯示模塊 ....................................................................................................... 8 元件清單 ............................................................................................................ 8 第 四章 軟件設(shè)計 ............................................................................................................ 9 設(shè)計思路 ............................................................................................................ 9 倒計時的理論 ................................................................................................. 9 狀態(tài)燈的理論 ................................................................................................. 9 流程設(shè)計 ............................................................................................................ 9 控制流程設(shè)計圖 ............................................................................................ 9 主程序流程設(shè)計圖 ...................................................................................... 10 模塊化的程序設(shè)計 .......................................................................................... 11 設(shè)計的必要性 .............................................................................................. 11 設(shè)計步驟 ..................................................................................................... 11 第五章 仿真及調(diào)試 ....................................................................................................... 12 調(diào)試步驟 ................................................................................................................ 12 仿真 ....................................................................................................................... 13 聯(lián)調(diào) ....................................................................................................................... 15 總結(jié) ............................................................................................................................... 15 參考文獻 ...................................................