文档介绍：摘要
随着人们生活水平的提高,如何实现家庭防盗这一问题也变得尤其突出,传统的机械锁由于其构造简单,安全性能低,无法满足人们的需求。随着电子产品向智能化和微型化的不断发展,单片机已成为电子产品研制和开发中首选的控制器,所以具有防盗报警功能的电子密码控制系统逐渐代替传统的机械式密码控制系统,克服了机械式密码控制的密码量少,安全性能差的缺点。通过单片机编写密码程序,并用74LS47和3-8译码器74LS138驱动的数码管来显示密码。数码管可以时时显示当前输入的四位数字。当输入密码正确时,对应的指示灯亮;当密码不正确时,另一个对应的指示灯亮且并且发出声音报警。
关键词: 密码锁,单片机,报警
ABSTRACT
With the improvement of people's living standards, it has e particularly prominent about how to achieve Anti-theft family. The traditional mechanical lock has such ing as simple structure , Low security ,it can't meet people's electronic products are developing towards intelligence and minimization, single-puters(SCM) have e the first choice for controllers in the development of electronic products. Therefore, the electronic anti-theft alarm function password control system and gradually replace the traditional mechanical password control system, e the low mechanical password control password and the ings of poor safety performance,the password program written by SCM, and 3-8 with 74LS47 Decoder 74LS138-driven digital control to display the password。Digital tube can always display the current input of six digits。When you enter the password correctly, the corresponding indicator light;When the password is incorrect, the other, and the corresponding indicator light and sound alarm。
Keywords: Combination lock, Single-chip puter, alarm
目录
摘要 I
ABSTRACT II
目录 III
第1章绪论 1
电子密码锁简介 1
电子密码锁的发展趋势 1
本设计所要实现的目标 2
第2章系统方案选择与论证 3
3
3
各模块方案选择与论证 3
5
第三章系统的硬件设计与实现 6
系统硬件概述 6
6
6
7
8
8
第4章系统的软件设计 10
10
11
11
12
13
13
14
第5章系统仿真与调试 15
15
16
结论 17
致谢 18
参考文献 19
附录1 系统电路图 20
附录2系统程序 21
附录3 实物图 27
附录4 系统使用说明书 30
第1章绪论
电子密码锁简介
电子密码锁是一种通过密码输入来控制电路或是芯片工作,从而控制机械开关的闭合,完成开锁、闭锁任务的电