【正文】 蘇州大學(xué) 學(xué)院（部） 城市軌道交通學(xué)院 課 題 基于單片機(jī)的 LED 顯示屏設(shè)計(jì) 年級(jí) 20xx 級(jí) 專業(yè) 電氣控制及自動(dòng)化 班級(jí) 10 控制 學(xué)號(hào) 1042402029 姓名 陸昊龍 指導(dǎo)老師 陳紅仙 職稱 高級(jí)實(shí)驗(yàn)師 論文提交日期 目錄 摘要 ....................................................................................................................... 1 Abstract .................................................................................................................. 2 第一章 緒論 .......................................................................................................... 3 第 節(jié) 研究的課題內(nèi)容 ................................................................................. 3 第 節(jié) 研究的背景與意義 ............................................................................. 3 LED 燈的發(fā)展背景與研究意義 ................................................................. 3 第 節(jié) 國內(nèi)外發(fā)展現(xiàn)狀 ............................................................................... 6 第 節(jié) 論文組織結(jié)構(gòu) ................................................................................... 7 第二章 硬件設(shè)計(jì) .................................................................................................. 8 第 節(jié) 方案設(shè)計(jì) ............................................................................................. 8 方案一的設(shè)計(jì) ............................................................................................ 8 方案二的設(shè)計(jì) .......................................................................................... 11 方案三的設(shè)計(jì) .......................................................................................... 13 方案的對(duì)比與選擇 .................................................................................. 14 第 節(jié) 主要元器件的介紹 ........................................................................... 16 器件的種類 .............................................................................................. 16 AT89S52 單片機(jī)的介紹 ........................................................................... 16 74HC574 鎖存器的介紹 ........................................................................... 19 ULN2803 驅(qū)動(dòng)器的介紹 .......................................................................... 21 LED 點(diǎn)陣的介紹 ....................................................................................... 22 第三章軟件設(shè)計(jì) .................................................................................................. 24 第 節(jié) LED 點(diǎn)陣屏顯示的兩種編程方法分析 ............................................. 24 第 節(jié) LED 點(diǎn)陣屏 C 語言編程方框圖與邏輯框圖 ..................................... 25 第 節(jié) 程序的設(shè)計(jì)與分析 ........................................................................... 26 鍵盤模塊的設(shè)計(jì)與分析 .......................................................................... 26 LED 顯示程序分析 ................................................................................... 29 總結(jié) ..................................................................................................................... 33 參考文獻(xiàn) ............................................................................................................. 34 致謝 ..................................................................................................................... 35 蘇州大學(xué)本科生畢業(yè)設(shè)計(jì)（論文） 1 摘要 在科技與經(jīng)濟(jì)發(fā)展迅速的現(xiàn)代社會(huì)中，人們對(duì)能 源節(jié)省以及高效可控性提出了更高的要求。經(jīng)過長期的發(fā)展， LED 燈以其獨(dú)有的節(jié)省能源，壽命長以及無輻射等特點(diǎn)逐漸代替了其他燈具步入了現(xiàn)代社會(huì)的殿堂。本次畢業(yè)設(shè)計(jì)就是經(jīng)過對(duì) LED 點(diǎn)陣，單片機(jī)以及其他電路元器件的學(xué)習(xí)與分析后，設(shè)計(jì)制作基于單片機(jī)應(yīng)用的 LED 電子顯示屏。通過電路原理的理論分析與電路的方案設(shè)計(jì)，來確定自己的設(shè)計(jì)思路，并畫出電路原理圖。確立了研究的方向后，開始焊接制作，并對(duì)焊接電路進(jìn)行檢測(cè)與查錯(cuò)。根據(jù)實(shí)際電路來進(jìn)行程序流程的分析及程序的總體設(shè)計(jì)。將程序?qū)雴纹瑱C(jī)，然后對(duì)程序?qū)氲慕Y(jié)果與進(jìn)行檢測(cè)與分析，并修改程序。最終達(dá)到在由 5個(gè) 16*16的 LED點(diǎn)陣組成的電子顯示屏上顯示動(dòng)態(tài)滾動(dòng)的 “ 軌道學(xué)院歡迎你 ” 字幕的效果與目的。 關(guān)鍵詞： LED 點(diǎn)陣；單片機(jī)；電路設(shè)計(jì) 蘇州大學(xué)本科生畢業(yè)設(shè)計(jì)（論文） 2 Abstract In modern society, which has rapid development of science and technology and the economic, people put forward higher requirements for energy saving and high controllability. After the longterm development, LED lamp with its unique energy saving, long service life and no radiation gradually replaced other lamps into modern society. This graduation design ,which is based on the study and analysis of LED lattice, single chip and the other circuit ponents, is to design and manufacture LED electronic display screen under the control of the si ngle chip. By analysing the circuit principle and planning the circuit scheme, I determine my own design ideas, and draw the circuit schematic diagram. After making sure the design direction, I start the welding production, and then I test and check the welding circuit. According to the actual circuit, I carry on the task of program flow analysis and program overall design. Put the program into the single chip, test the results of the procedure import, and modify the program. Eventually achieve the purpose and the target of displaying the dynamic rolling s