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本 科 毕 业 设 计 (论 文)

基于PROTEUS的单片机智能电子密码锁的

仿真设计

Based on the PROTEUS simulation design of the intelligent electronic combination

lock

学 院： 专业班级： 学生姓名： 指导教师： 电子信息工程学院 电子信息工程 电子091 惠 康 学 号： 510920141 韩晓春（高级实验师） 年 月

毕业设计（论文）中文摘要

基于PROTEUS的单片机智能电子密码锁的仿真设计 摘 要：在现代生活中，防盗早已成为人们的问题，为了解决防盗问题，锁充当了重要角色，现在我国许多人还是以传统机械锁为主，可是当前劣质的机械锁很大程度上都可以相互打开，此外，即使是一把质量相当不错的普通锁，通过强硬的手段开锁，那也是能在不破坏锁外表面的前提下将其打开。电子密码锁的诞生弥补了普通锁的这些弊端，它为安全锁提供了相当大的发展空间。 这次的设计采用单片机来作为控制中心，通过与单片机以外的电路进行组建，构成这一密码锁控制系统，所设计的锁有6个密码需要输入，而每个密码的数值范围在0～9这十个数之间，对于密码的修改，这是根据用户自行决定的。当用户进行开锁操作时，只有用户输入完全正确的密码，那么密码锁才会开锁，在用户输入的密码有错误时，会有提示，同时为了将安全性进一步的提高，在用户3次按键操作错误后会发出声音，在警报的这个阶段用户再按键是没有用的，这是为了防止窃贼进行多次试探密码的手段。 关键词：密码锁；单片机；警报

毕业设计（论文）外文摘要

Based on the PROTEUS simulation design of the intelligent

electronic combination lock

Abstract: In today's society, security has become a social problem, and since the

ancient times is the important tool, anti-theft lock at present domestic most people use or traditional mechanical locks, however, the counterfeit and inferior mechanical lock the mutual opening rate is very high, in addition, even if is a qualified mechanical lock, through the lock, even under the premise of without causing damage to the lock will open the lock. These drawbacks of mechanical lock to a new kind of electronic trick lock, the lock provides a great space for development.

The design USES the single chip microcomputer as main control chip, combining with the peripheral circuit, electronic password control system by combination lock, a total of six password, each value in the range of 0 ~ 9, the user can set and modify the password, sound and light hint every password button. Users want to play the lock, must first by providing keyboard input the correct password to have a prompt when password input error, in order to improve the security, when the password input error will report to the police for ten minutes, three times during the password you entered is invalid, to prevent the thief tempted password many times. Four password input is correct at the same time, to open the lock. Lock has backup battery, can only be set when the internal power on reset or change the password, so, just outside the door keys cannot be modified or set the password, so that the secrecy of strong, high flexibility.

Keywords: Electronic combination lock; SCM; give an alarm