基于單片機的電子密碼鎖設計論文

共48頁

摘要:隨著電子產品向智能化和微型化的不斷發(fā)展，單片機已成為電子產品研制和開發(fā)中首選的控制器。隨著人們生活水平的提高，如何實現(xiàn)家庭防盜這一問題也變的尤其的突出，傳統(tǒng)的機械鎖由于其構造的簡單，安全性能低，無法滿足人們的需要。
本文從經濟實用的角度出發(fā)，采用美國Atmel公司的單片機AT89S51與低功耗CMOS型E2PROM AT24C02作為主控芯片與數(shù)據(jù)存儲器單元，結合外圍的鍵盤輸入、顯示、報警、開鎖等電路，用匯編語言編寫主控芯片的控制程序，設計了一款可以多次更改密碼具有報警功能的電子密碼鎖。
經實驗證明，該密碼鎖具有設計方法合理，簡單易行，成本低，安全實用等特點，符合住宅、辦公室用鎖要求，具有推廣價值。


關鍵詞:密碼鎖 單片機 報警


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 AT89S51 SCM and E2PROM AT24C02 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: Cipher lock SCM Alarm
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