基于單片機(jī)電子密碼鎖的設(shè)計(jì)

電子論文編號(hào):JD1128  論文字?jǐn)?shù):19969,頁(yè)數(shù):42（摘要到參考文獻(xiàn)）  附開(kāi)題報(bào)告，任務(wù)書，外文翻譯 
目 錄
第1章 課題概述 1
 1.1密碼鎖的特點(diǎn)及意義 1
 1.2設(shè)計(jì)要求概述 2
 1.3單片機(jī)密碼鎖的功能介紹 2
 1.4方案論證 3
第2章 系統(tǒng)硬件基礎(chǔ)及設(shè)計(jì) 5
 2.1 AT89C51概述及其引腳功能介紹 5
 2.1.1 AT89C51單片機(jī)內(nèi)部結(jié)構(gòu) 5
 2.1.2 AT89C51引腳功能介紹 8
 2.2非編碼鍵盤及其接口技術(shù) 12
 2.2.1  非編碼鍵盤的結(jié)構(gòu) 12
 2.2.2非編碼鍵盤的工作方式 14
 2.3 四位數(shù)碼管顯示器及其工作方式 15
 2.3.1 數(shù)碼管的工作原理 15
 2.3.2 數(shù)碼管顯示器的工作方式 16
 2.4 開(kāi)鎖機(jī)構(gòu) 17
 2.5 設(shè)計(jì)思路及具體電路的設(shè)計(jì) 17
第3章 電路圖的繪制及成品的制作 20
 3.1 原理圖及印制電路板的設(shè)計(jì) 20
 3.1.1設(shè)計(jì)電路原理圖 21
 3.1.2電氣法則測(cè)試及報(bào)表的生成 22
 3.1.3 印制電路板的設(shè)計(jì) 22
 3.2電路板的制作與調(diào)試 24
 3.3 元器件的焊接及密碼鎖成品的制作 25
 3.3.1元器件的焊接 26
 3.3.2密碼鎖成品 26
第4章 系統(tǒng)軟件設(shè)計(jì) 27
 4.1匯編語(yǔ)言程序設(shè)計(jì)的步驟 27
 4.2程序流程圖及系統(tǒng)程序 29
結(jié)論 35
參考文獻(xiàn) 36
致謝 37
附錄A 外文文獻(xiàn) 38
附錄B 系統(tǒng)原理圖 48
附錄C 匯編源程序 50

摘 要
 隨著科學(xué)技術(shù)的不斷發(fā)展，人們對(duì)日常生活中的安全保險(xiǎn)器件的要求越來(lái)越高，安全已成為人們關(guān)注的焦點(diǎn)之一。為滿足人們對(duì)鎖的使用要求，增加其安全性，用密碼代替鑰匙的密碼鎖應(yīng)運(yùn)而生。論文詳細(xì)地論述了由AT89C51單片機(jī)控制的電子密碼鎖的硬件和軟件的設(shè)計(jì)過(guò)程。該密碼鎖是一種通過(guò)密碼輸入來(lái)控制電路或是芯片工作，從而控制機(jī)械開(kāi)關(guān)的閉合，完成開(kāi)鎖、閉鎖任務(wù)的電子產(chǎn)品。它由四部分組成：非編碼式鍵盤、顯示電路、輸入輸出控制電路、報(bào)警提示電路。利用目前使用的微處理器AT89C51 作為控制元件設(shè)計(jì)的這種電子密碼鎖，其具有安全性高、成本低、功耗低、易操作等優(yōu)點(diǎn)，克服了普通鎖需要隨身攜帶鑰匙且易丟失、保密性差的缺點(diǎn)，在賓館、辦公大樓、倉(cāng)庫(kù)、保險(xiǎn)柜和大型超市普遍適用。基于以上思路，單片機(jī)密碼鎖可實(shí)現(xiàn)的功能大體上包括以下幾個(gè)方面：
 1.用戶可以自由設(shè)定密碼。
 2.具有報(bào)警提示功能。
 3.可設(shè)置萬(wàn)用密碼。
 4.具有掉電存儲(chǔ)密碼功能。
 
 
 關(guān)鍵字：密碼鎖  單片機(jī)  控制
 

Abstract
 With the developing of the technology, the people are becoming more and more attach importance to the safety of insurance devices in the daily life, security has become one of the focuses which are paid to much attention. In order to meet the requirements of the people to increase the security of locks, the key to the lock replaced by the password came into being. This paper discusses the designing process of the hardware and software of the electronic code lock in detail，which is controlled by the AT89C51 single-chip microcomputer. This electronic products controls the circuit or chips by inputting the password, so as to close the mechanical switch and complete the task of lock or unlock. It consists of determinant keyboard, the circuit of display, input and output control circuits, alarming circuit. This electronic code lock is designed to use AT89C51 microprocessor as a control components .And with its advantage of safety, low cost, low power consumption, easy-to-use, etc., it overcomes the shortcoming of the general lock that the users have to carry the key which is easy to loss. So it is applied in hotels, office buildings, warehouses, safe and large supermarkets universally. Based on the above ideas, in general the functions of the single-chip code lock are as follows:
 1. The user can set different passwords freely.
 2. Alarming function..
 3. You can set an almighty password.
 4. The power-down memory function.
 
 
 Keywords: code lock  single-chip  control