【正文】 \\ \\\\\\\\\ 攀枝花學(xué)院本科綜合實驗 (論文 ) 基于單片機(jī)實現(xiàn)電子密碼鎖 的設(shè)計 學(xué)生姓名： 學(xué)生學(xué)號： _____ 院（系）： _______ 年級專業(yè)： __________ 指導(dǎo)教師： ______ 攀枝花學(xué)院本科綜合實驗論文 摘要 I 摘 要 本設(shè)計是基于 51 系列的單片機(jī)進(jìn)行的電子密碼鎖設(shè)計，采用的是單片機(jī)作為數(shù)據(jù)處理主控芯片 。 電子密碼鎖 是一種通過 密碼 輸入 來控制電路或是芯片工作，從而控制機(jī)械開關(guān)的閉合，完成開鎖、閉鎖任務(wù)的電 子產(chǎn)品。它的種類很多，有簡易的電路產(chǎn)品，也有基于芯片的性價比較高的產(chǎn)品。應(yīng)用較廣的電子密碼鎖是以芯片為核心，通過編程來實現(xiàn)的。 電子密碼鎖的設(shè)計主要由四部分組成： 44? 矩陣鍵盤、以 AT89C52 芯片為核心的密碼鎖的數(shù)據(jù)處理及控制電路、掉電情況下依然能保存密碼的 EEPROM 存儲器芯片 ，輸出七段顯示電路。另外系統(tǒng)還有 LED 提示燈，報警蜂鳴器，單片機(jī)復(fù)位電路等。 電子密碼鎖設(shè)計的關(guān)鍵問題是實現(xiàn)密碼的輸入、清除、開鎖、更改等功能。同時該密碼具有設(shè)計方法合理，簡單易行，成本低， 安全實用等特點，符合住宅、辦公室等場所的用鎖要求，具有推廣價值。 關(guān)鍵詞 單片機(jī) ， 密碼鎖， 4*4 矩陣鍵盤， EEPROM 存儲芯片， AT89C52攀枝花學(xué)院本科綜合實驗論文 ABSTRACT II ABSTRACT This design is based on 51 series singlechip electronic bination lock design, USES a single chip microputer as the master control chip data processing. Electronic bination lock is a password or to control circuit, so as to control mechanical switches closed, lock, lock task of electronic products. It39。s a lot of more phyletic, has simple circuit products, also has a high cost performance products based on the chip. Widely used electronic coded lock based on chip as the core, through the programming. Electronic bination lock design is mainly posed of four parts: the matrix keyboard bination lock, AT89C52 chip as the core of data processing and control circuit, the electric block can still save password EEPROM memory chips, seven segment display circuit output. Additional system and LED lights, alarm buzzer, singlechip microputer reset circuit, etc. Electronic bination lock design is the key problem of password input, clear, lock, changes, etc. At the same time, the password is design method is reasonable, simple, low cost, safe and practical characteristics, conform to the requirements of the residential, office and other places with locks, has promotion value. Key words Microcontroller, trick lock, the 4 * 4 matrix keyboard, EEPROM memory chips, AT89C52攀枝花學(xué)院本科綜合實驗論文 目錄 1 目 錄 摘 要 ............................................................................................................................... I ABSTRACT .................................................................................................................... II 1 緒論 ...............................................................................................................................1 本課題研究的背景及意義 ....................................................................................... 1 國內(nèi)外研究現(xiàn)狀、水平 ........................................................................................... 2 本課題的發(fā)展趨勢 .................................................................................................. 2 本課題的研究內(nèi)容 .................................................................................................. 2 本題目所要實現(xiàn)的設(shè)計任務(wù) .................................................................................... 3 本設(shè)計實現(xiàn)的技術(shù)指標(biāo) ................................................................................. 3 本設(shè)計的創(chuàng)新點 ............................................................................................ 3 2 方案分析與選擇 .........................................................................................................4 設(shè)計方案 ................................................................................................................ 4 方案論證 ................................................................................................................. 5 3 系統(tǒng)的硬件設(shè)計與實現(xiàn) ...............................................................................................6 電路設(shè)計框圖 ......................................................................................................... 6 主要芯片介紹 ......................................................................................................... 6 單片機(jī)簡介 ...................................................................................... 6 存儲芯片 AT24C02 ....................................................................................... 11 LM032L 顯示器 ........................................................................................... 12 單片機(jī)最小系統(tǒng)設(shè)計 ............................................................................................ 13 鍵盤輸入模塊 ....................................................................................................... 13 密碼存儲模塊 ....................................................................................................... 14 晶振部分 .............................................................................................................. 14 顯示模塊 .............................................................................................................. 15 警報部分 .............................................................................................................. 16 4 系統(tǒng)的軟件設(shè)計 .........................................................................................................17 軟件的設(shè)計架構(gòu) ................................................................................................... 17 系統(tǒng)仿真電路圖 ................................................................................................... 17 顯示模塊仿真電路圖 ............................................................................................ 18 開鎖顯示仿真 ............................................................................................. 18 修改密碼顯示仿真 ...................................................................................... 19 程序代碼 ............................................................................................................