【正文】 ought a new revolution for the modern industry observation and control domain, lived for the humanity has brought the radical change. But two organic synthesis,will bring happier tomorrow to the humanity. This graduation project,I summarized own university39。關鍵詞： 89C51芯片；單片機；紅外遙控開關 仿真器Abstract:With the infiltration in the social field of the puter in recent years, the application of the onechip puter is moving towards deepening constantly, drive tradition is it measure crescent benefit to upgrade day to control at the same time. In measuring in real time and automatically controlled onechip puter application system, the onechip puter often uses as a key part, only onechip puter respect knowledge is not enough, should also follow the structure of the concrete hardware , and direct against and use the software of target39。這次畢業(yè)設計，我總結了自己大學的專業(yè)所學和多次實踐經(jīng)驗，并結合紅外遙控技術和單片機機技術，比較系統(tǒng)地介紹了單片機機技術在紅外遙控系統(tǒng)中的應用，可以說是對紅外遙控技術和單片機機技術的一次總結和升華。而微機技術的出現(xiàn)，則使現(xiàn)代科學研究得到了質(zhì)的飛躍，給現(xiàn)代工業(yè)測控領域帶來了一次新的革命，給人類生活帶來了根本的改變。為改變目前汽車上的車頭路牌指示燈（以下簡稱車號器），無法靈活改變的缺陷，把紅外遙控用在其中，使其可以輕松實現(xiàn)遠距離、非接觸性的一次改變車號的目的，從而改變以前用人工翻牌的舊模式。由于紅外線遙控器具有體積小、功耗低、功能強、成本低等特點。本次畢業(yè)設計設計了基于紅外遙控和89C51單片機控制的多路紅外遙控開關，給出了系統(tǒng)的硬件組成和硬軟件設計方法．為達到準確控制，將發(fā)射脈沖分為連接段、控制段和結束段等3部分，并在接收端進行校驗．系統(tǒng)在實際使用后，證明其方便、可靠并具有實用價值．遙控技術根據(jù)控制方式的不同，一般分紅外遙控、聲控和無線遙控，俗稱三遙。摘要 60 引 言 9第一章 緒論 10 課題背景 10 設計應用前景 11第二章 總體設計方案 11 12 12 12 AT89C51單片機的硬件結構： 13 1硬件功能劃分 14 總體方案設計 14第三章 系統(tǒng)的設計 15 15 15 鍵盤接口 18 LED顯示器 19 發(fā)射部分 20 21 系統(tǒng)軟件設計 22 22 23 24 遙控發(fā)射編碼 24 25 30 30 30第四章 系統(tǒng)程序分析 33 鍵盤掃描程序 33 36 37 40 調(diào)光程序 43 延時子程序 45第五章 系統(tǒng)的調(diào)試 46 46： 475．2軟件調(diào)試 48 48 49 調(diào)試后的系統(tǒng)運行結果 50第六章 畢業(yè)設計總結 51參考文獻： 52附錄: 53摘 要近年來隨著計算機在社會領域的滲透, 單片機的應用正在不斷地走向深入，同時帶動傳統(tǒng)控制檢測日新月益更新。在實時檢測和自動控制的單片機應用系統(tǒng)中，單片機往往是作為一個核心部件來使用，僅單片機方面知識是不夠的，還應根據(jù)具體硬件結構，以及針對具體應用對象特點的軟件結合，以作完善。紅外線遙控是目前應用最廣泛的一種通信和遙控手段。因此，彩電、錄像機、音響設備、空調(diào)、玩具、門鈴以及遙控汽車路牌等其它小型裝置上也紛紛采用紅外線遙控。 紅外遙控技術的出現(xiàn)，不僅大大提高了勞動生產(chǎn)率，降低了成本，而且減輕了人們的勞動強度，改善了勞動條件。而兩者的有機結合，將給人類帶來更美好的明天。正是鑒于紅外技術在民用中有如此普遍及重大的意義，本人在畢業(yè)設計選擇了家用電器的紅外遙控器設計，在畢設過程中，本人對紅外通信技術以及單片機技術進行了長期、全面地了解和學習，并對很多前輩們的研究成果進行了研究，以求嘗試在學習前人經(jīng)驗的基礎上取得新的突破。s characteristic to bine concretly, in order to do perfectly. The remote control technology basis control mode difference, generally divides the infrared remote control, the voice control and the wireless remote control, is named remotely three. The infrared remote control is at present applies the most widespread one kind of correspondence and the remote control method. Because the infrared remote control has the volume slightly, the power loss low, the function strong, the cost is low and so on the characteristic. Therefore, the color television, the video recorder, the acoustic equipment, air conditioning, the toy, the doorbell as well as the remote control automobile street sign and so on other small install also in abundance uses the infrared remote control. In order to change on the present automobile the front of a train street sign indicating lamp (to hereafter refer to as vehicle number), is unable flaw which nimbly changes, uses the infrared remote control in among, enables its to be allowed with ease to realize the longdistance range, a noncontact change vehicle number goal, thus change before with artificially turns the sign the old pattern. Infrared remote control technology appearance, not only greatly enhanced the labor productivity, reduced the cost, moreover reduced people39。s specialty to study and the many times experience, and the union infrared remote control technology and the monolithic integrated circuit machine technology, pared with systematically introduced the monolithic integrated circuit machine technology in the infrared remote control system application, was allowed outside to say was bees lucky controls remotely technical and a monolithic integrated circuit machine technology summary and the sublimation. It precisely in view of the fact that the infrared technology in civil center has so universal and the significant, myself have chosen the domestic electric appliances infrared remote control design in the graduation project, in finishes supposes in the process outside, myself became lucky the munications well as the monolithic integrated circuit technology have carried on longterm, prehensively the understanding and the study, and has conducted the research to the very many seniors research results,attempted in order to in studies in the foundation which the predecessor experienced to obtain the new breakthrough. Keyword：89C51 chip；single chip microputer；0 引 言單片機具有體積小，重量輕，控制靈活方便，價格低廉等優(yōu)點，通常配以簡單的外圍電路就可以構成一個完整的控制系統(tǒng)．紅外遙控具有控制簡單、實施方便、可靠性高等特點．目前，紅外遙控技術已廣泛應用于各種家電產(chǎn)品和娛樂設施中，為用戶提供了方便的操控手段．本設計以89C51單片機為核心，附以相應的外圍電路，構成基于單片機控制的多路紅外遙控開關。目前通用紅外遙控器大都采用曼徹斯特（Manchester）編碼方案。紅外數(shù)據(jù)傳輸具有體積小、功耗低、功能強、成本低等特點，為數(shù)眾多的彩電、錄象機、空調(diào)、音響設備和其他小型家電都使用了紅外通信模塊，此外，在高壓、輻射、有毒、粉塵等工業(yè)設備環(huán)境中，采用紅外通信技術不僅安全可靠而且能有效地隔離各種干擾。單片機以其卓越的性能，得到了廣泛的應用，已經(jīng)深入到各個領域。它能方便地組裝成各種智能測控設備及各種智能儀表儀器。單片機芯片本身是按工業(yè)測控環(huán)境要求設計的，分為民用、工業(yè)品、軍品、其中工業(yè)品和軍品具有較強的適應惡劣環(huán)境的能力。單片機的應用領域十分廣泛，自20世紀80年代以來，單片機的應用已經(jīng)深入到工業(yè)、農(nóng)業(yè)、國防、科研、機關、教育、商業(yè)以及家電、生活、娛樂、玩具