【正文】 哈爾濱工業(yè)大學(xué) 華德應(yīng)用技術(shù)學(xué)院 畢業(yè)設(shè)計(jì)（論文） I 摘 要 本文設(shè)計(jì)了一種基于單片機(jī)的紅外遙控密碼鎖，并簡(jiǎn)要介紹了它的工作原理。紅外電子密碼鎖能實(shí)現(xiàn)多種控制功能，有較好的市場(chǎng)發(fā)展前景和技術(shù)應(yīng)用價(jià)值。 電子密碼鎖克服了機(jī)械式密碼鎖量少、安全性能差的缺點(diǎn)，特別是使用單片機(jī)控制的智能電子密碼鎖，不但功能全，而且具有更高的安全性和可靠性。并且電子密碼鎖只需記住一組密碼，無需攜帶鑰匙，免除了人們攜帶鑰匙的煩惱，被越來越多的人所喜歡。 針對(duì)傳統(tǒng)的機(jī)械鎖的各種缺點(diǎn)和對(duì)安全性要求，設(shè)計(jì)了一種紅外遙控電子密碼鎖，可以滿足安全方面的要求，也能夠?qū)崿F(xiàn)特殊環(huán)境下的使用需求。系統(tǒng)能完成開鎖、出錯(cuò)報(bào)警、修改用戶密碼等基本的密碼鎖的功能，并且能實(shí)現(xiàn)遙控、掉電存儲(chǔ)、聲音提示等功能。 關(guān)鍵詞： 電子密碼鎖；紅外遙控； AT89C51 單片機(jī) 哈爾濱工業(yè)大學(xué) 華德應(yīng)用技術(shù)學(xué)院 畢業(yè)設(shè)計(jì)（論文） II Abstract This paper designed the code lock controlled by infrared ray based on single chip. At the same time, we also give a brief introduction of the principle of the code lock. Infrared electronic coded lock can realize various control functions， have a good market prospects for development and technical application value。 According to all kinds of faults of the traditional mechanical lock and to meet the security requirement， designed a kind of infrared remote electronic coded lock， it can not only meet the safety requirements,but also can realize the use of special circumstances system has the basic function of opening the lock, error alarming and modifying the password of the users as well as the function of remote control, power down storeage, sound hinting function, etc. Key words: Electronic coded lock。 Infrared remote control。 Microcontroller 哈爾濱工業(yè)大學(xué) 華德應(yīng)用技術(shù)學(xué)院 畢業(yè)設(shè)計(jì)（論文） III 目 錄 摘 要 ......................................................................................................................... I Abstract .................................................................................................................... II 第 1 章 緒論 .............................................................................................................. 1 課題背景和意義 .......................................................................................... 1 電子密碼鎖的發(fā)展趨勢(shì) .............................................................................. 1 系統(tǒng)設(shè)計(jì)要求 .............................................................................................. 2 功能 .................................................................................................... 2 技術(shù)指標(biāo) ............................................................................................ 2 第 2 章 系統(tǒng)設(shè)計(jì)方案 .............................................................................................. 3 AT89C51 芯片的介紹 ................................................................................... 3 系統(tǒng)設(shè)計(jì)方案 .............................................................................................. 6 本章小結(jié) ............................................................................................................. 6 第 3 章 紅外密碼鎖硬件部分 .................................................................................. 7 74LS164 芯片 ............................................................................................... 7 單片機(jī)硬件電路 .......................................................................................... 7 電源電路 ............................................................................................ 7 復(fù)位電路 ............................................................................................ 8 晶振電路 ............................................................................................ 9 發(fā)射和接收裝置 .......................................................................................... 9 發(fā)射裝置 ............................................................................................ 9 接收裝置 .......................................................................................... 10 34 矩陣鍵盤 .............................................................................................. 11 數(shù)碼管 ........................................................................................................ 12 發(fā)光二級(jí)管 LED ....................................................................................... 13 LED 簡(jiǎn)介 .......................................................................................... 13 LED 特性 .......................................................................................... 13 電磁繼電器 ................................................................................................ 14 報(bào)警器 ........................................................................................................ 14 本章小結(jié) ........................................................................................................... 18 第 4 章 軟件程序設(shè)計(jì) ............................................................................................ 19 遙控發(fā)射部分程序設(shè)計(jì) ............................................................................ 19 主程序 .............................................................................................. 19 按鍵掃描程序 .................................................................................. 20 遙控編碼脈沖發(fā)射程序 .................................................................. 22 主機(jī)接收部分程序設(shè)計(jì) ............................................................................ 24 主程序 .............................................................................................. 24 哈爾濱工業(yè)大學(xué) 華德應(yīng)用技術(shù)學(xué)院 畢業(yè)設(shè)計(jì)（論文） IV 解碼接收程 序 .................................................................................. 25 本章小結(jié) ........................................................................................................... 28 第 5 章 系統(tǒng)調(diào)試 .................................................................................................... 29 調(diào)試儀器 .................................................................................................... 29 整體調(diào)試 .................................................................................................... 29 硬件單元調(diào)試 ...........................................................................................