電子密碼鎖的設(shè)計(jì)
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[摘  要] 隨著電子產(chǎn)品向智能化和微型化的不斷發(fā)展，單片機(jī)已成為電子產(chǎn)品研制和開發(fā)中首選的控制器。隨著人們生活水平的提高，如何實(shí)現(xiàn)家庭防盜這一問題也變的尤其的突出，傳統(tǒng)的機(jī)械鎖由于其構(gòu)造的簡單，安全性能低，無法滿足人們的需要。
本文從經(jīng)濟(jì)實(shí)用的角度出發(fā)，采用美國Atmel公司的單片機(jī)AT89C51為主要芯片，結(jié)合外圍的鍵盤輸入、顯示、報(bào)警、開鎖等電路，用匯編語言編寫主控芯片的控制程序，設(shè)計(jì)了一款可以多次更改密碼具有報(bào)警功能的電子密碼鎖。
經(jīng)實(shí)驗(yàn)證明，該密碼鎖具有設(shè)計(jì)方法合理，簡單易行，成本低，安全實(shí)用等特點(diǎn)，符合住宅、辦公室用鎖要求，具有推廣價(jià)值。

[關(guān)鍵詞] AT89C51 密碼鎖  Proteus

The design of electronic code lock

Abstract: As electronic products are developing towards intelligence and minimization, single—chip computers (SCM ) have become the first choice for controllers in the development of electronic products. With the improvement of people's living standards, it has become particularly prominent about how to achieve Anti-theft family. The traditional mechanical lock has such shortcoming as simple structure , Low security, it can't meet people's demands.
For practicality, this paper designs a new electronic cipher lock, which has the function of alarm and whose cipher can be changed many times. This cipher lock uses AT89C51 as main chip and data memory cell . The author made this ciphor lock by use of making controlled program of master CMOS with periphery electrocircuit of keyboard input, display, alarm and unlock.
Experiments show that the designed cipher lock is characterized by its reasonable designing methods, simple operation, low cost and property of safety and practicality. Besides, it works well as a residence lock and has great potential for commercial development.

Key words: AT89C51  Electronic code lock  Proteus

 
目   錄
第1章 緒論 1
1.1 電子密碼鎖簡介 1
1.2 電子密碼鎖的發(fā)展趨勢(shì) 1
1.3 本設(shè)計(jì)所要實(shí)現(xiàn)的目標(biāo) 1
第2 章 設(shè)計(jì)方案的選擇 2
2.1 方案一：采用數(shù)字電路控制 2
2.2 方案二：采用以單片機(jī)為核心的控制方案 2
第3 章 主要元器件介紹 3
3.1 主控芯片AT89C51 3
3.1.1 AT89C51性能簡介 3
3.1.2 AT89C51引角功能說明 4
3.2 LM016L顯示器 5
3.2.1 LM016L性能簡介 5
3.2.2 LM016L引角功能說明 6
3.3 芯片74LS20 6
第4章 系統(tǒng)硬件構(gòu)成 8
4.1 設(shè)計(jì)原理 8
4.2 電路總體構(gòu)成 8
4.3 鍵盤輸入部分 9
4.4 復(fù)位部分 10
4.5 晶振部分 10
4.6 顯示部分 10
4.7 報(bào)警部分 11
第5章 系統(tǒng)軟件設(shè)計(jì) 12
5.1 程序框圖 12
5.2 程序設(shè)計(jì) 13
5.3 結(jié)論 25
第6章 Proteus系統(tǒng)仿真 26
6.1 關(guān)于Proteus 26
6.2 Proteus的基本操作 26
6.2.1 工作界面及基本操作 26
6.2.2 關(guān)閉Proteus.ISIS 29
6.3 仿真結(jié)果 29
結(jié)束語 31
參考文獻(xiàn) 32
致謝 33
英文文獻(xiàn) 34
譯文 39
附 錄 42