基于單片機(jī)的紅外無線開關(guān)設(shè)計(jì)

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摘要 無線遙控技術(shù)的誕生，起源于無線電通訊技術(shù)，最初的構(gòu)想是建立無線電電報(bào)技術(shù)網(wǎng)。真空電子管的發(fā)明使得無線電技術(shù)的應(yīng)用和普及很快發(fā)展到民用和軍用等各個(gè)域。
隨著晶體管的發(fā)明和集成電路的誕生，無線電遙控技術(shù)達(dá)到了更加完善的程度，現(xiàn)如今我們所知道的導(dǎo)彈、衛(wèi)星、航天飛機(jī)等高科技技術(shù)都是與無線遙控技術(shù)分不開的，它也不僅是軍事領(lǐng)域的成員，我們的日常生活可以說是已經(jīng)離不開了無線遙控，如：遙控監(jiān)視、報(bào)警、遙控電視、遙控玩具等等?，F(xiàn)在民用遙控裝置領(lǐng)域的拓展大大的改善了人們生活質(zhì)量和品質(zhì)，也使一些不可能變成了可能。家用電器中的遙控裝置也應(yīng)用極多。
本文設(shè)計(jì)的無線遙控裝置就是其中的一個(gè)小小應(yīng)用，主要是以單片機(jī)AT89C51作為主控芯片，利用紅外線遙控發(fā)射、接收的工作原理以及單片機(jī)外部中斷的原理而制作的一款遙控裝置，這款遙控裝置主要用于控制家用電器。其中發(fā)射部分包括鍵盤矩陣、編碼調(diào)制、LED紅外發(fā)送器；接收部分包括光、電轉(zhuǎn)換放大器、解調(diào)、解碼電路。另外，本設(shè)計(jì)利用匯編語言，完成了軟件系統(tǒng)的編程，能夠?qū)崿F(xiàn)定時(shí)設(shè)置、顯示狀態(tài)和風(fēng)速換擋等功能。此設(shè)計(jì)硬件電路簡(jiǎn)單，控制內(nèi)容多，功耗小，抗干擾能力比較強(qiáng)。

關(guān)鍵詞 遙控 紅外線 單片機(jī) 接收 硬件

Design of infrared wireless switch based on single chip microcomputer
ABSTRACT The birth of wireless remote control technology originated in the radio communication technology, the initial idea is to build a radio telegraphy.The invention of vacuum tubes made radio technology popular and quickly applied to the civil and military fields.
With the birth of the invention of transistor and integrated circuits, wireless remote control technology has achieved a more perfect degree,as we know of missile, satellite, space shuttle and other high-tech technology are inseparable from the wireless remote control technology, it is not only a member of the military field, our daily life can be said to be already left do not open the wireless remote control, such as: remote monitoring, alarm, remote control television,remote control toys. Now the development of civilian remote control device field has greatly improved the quality and the quality of people's life, made the impossible possible. Remote control device of household appliances are also applied a lot.
A small application of wireless remote control device designed in this paper is one of those applications, is mainly based on AT89C51 micro-controller which is the main control chip, and the use of infrared remote to control launching or receiving, working principle and MCU external interrupt principle of a remote control device, a remote control device is mainly used for the control of household appliances.One part includes the keyboard matrix, coded modulation, the LED infrared transmitter emission; receiving part comprises a light, electricity conversion amplifier, demodulation, decoding circuit. In addition, the design of the use of assembly language,the software system programming, can realize the timing setting, display the status and functions of the wind speed shift. The design of the hardware circuit is simple, the control content, small power consumption,anti-interference ability is strong.

Key words control from a distance infrared ray single chip computer Receive hardware

目錄
第一章 緒論 1
1.1 紅外遙控技術(shù)概述 1
1.1.1 什么是紅外線 1
1.1.2 紅外遙控的基本原理 1
1.1.3 紅外遙控的應(yīng)用范圍 2
1.2 紅外遙控技術(shù)的研究和成果 2
1.3 多功能紅外遙控器國內(nèi)外現(xiàn)狀和發(fā)展趨勢(shì)  3
1.4 本文主要內(nèi)容 4
第二章 系統(tǒng)方案設(shè)計(jì) 5
2.1 系統(tǒng)方案論證與方案選擇 5
2.1.1 方案一 無線遙控 5
2.1.2 方案二 采用PT2262/PT2272實(shí)現(xiàn)的無線遙控 6
2.1.3 方案三 采用AT89C51單片機(jī)實(shí)現(xiàn)的紅外遙控 6
2.2 系統(tǒng)構(gòu)成 7
2.2.1遙控開關(guān)的系統(tǒng)框圖 7
2.2.2 硬件電路元器件 8
第三章 系統(tǒng)的硬件電路組成部分 15
3.1 系統(tǒng)控制電路 15
3.2 紅外遙控器的工作原理 16
3.2.1 紅外線遙控發(fā)射電路 16
3.2.2 編碼過程 17
3.2.3 紅外線遙控譯碼 19
3.3 繼電器執(zhí)行電路 20
3.4 報(bào)警器提示電路 20
3.5 工作指示燈電路 21
3.6 LED顯示電路 21
3.7 系統(tǒng)功能設(shè)置 22
3.7.1 控制電器的開啟和關(guān)閉 22
3.7.2 遙控器按鍵功能設(shè)置 22
3.7.3 狀態(tài)顯示設(shè)置 22
3.7.4 定時(shí)功能設(shè)置 22
3.8 紅外無線開關(guān)的工作過程 23
第四章 單片機(jī)系統(tǒng)的軟件設(shè)計(jì) 24
4.1 軟件系統(tǒng)的組成部分 24
4.2 程序流程及說明 24
4.2.1 發(fā)射控制流程 25
4.2.2 按鍵掃描流程 25
4.2.3 發(fā)射流程 26
4.2.4 接收控制流程 27
4.2.5 中斷流程 27
第五章 總結(jié)與展望 29
致謝 30
參考文獻(xiàn) 31
附錄 程序源代碼 32