[工学]红外电子密码锁.doc

摘 要 现代生活中，很多行业的许多地方都需要密码锁， the modern life, a lot of places of trade need password lock, the application of password locks seems particularly important. The development of science and technology, especially the situation that the technology of the micro-control unit and integrated circuit technology are ripe day by day, has offered the theft-proof remote control technology with a systematic circuit with such virtues as cheap cost, multiple function, easy operation, etc. It is a kind of scheme of combining technical application of the micro-control unit with infrared remote control technology that the infrared remote control password originally designed is locked, it is mainly applied to the system of burglary-resisting door of the family. Its task is: the homer locks and establishes a password for the password lock first. When the person outside wants to enter the door, he or she must type the code in the micro-control unit, and this password will be compared with the password that the homer has established in the EEPROM. If the password is correct, the system will urge the electromagnetic carrying out device to be turned on and locked, it is all right for people to enter the door; If the password is incorrect, the result is that the person is refused. Through such procedures, the possibility of strangers’ coming into the house doesn’t establish, and so does the safety of the house. Keywords：Coded-lock, Infrared remote control, Micro-control unit, the intelligent control 目 录 摘 要 I Abstact II 1 绪 言 1 1.1 课题背景 1 1.2 课题研究的目的和意义 2 1.3国内外概况 2 1.4课题的主要研究工作 3 2 系统设计方案的研究 4 2.1系统的控制特点与性能要求 4 2.2系统实现的原理 5 2.3系统实现方案分析 6 2.3.1红外遥控发射电路 6 2.3.2 遥控发射器及其编码： 6 2.3.3、接收器及解码 7 3 红外遥控密码锁的设计 8 3.1 元件的选用 8 3.1.1 中央控制器——AT89C51 8 3.1.2红外遥控发射器 11 3.1.3 红外遥控接收组件 13 3.1.4 EEPROM存贮器AT24C02电路 14 3.2 系统的设计 15 4 系统的实现 17 4.1软件子系统 17 4.2实验仿真系统的介绍 19 4.2.1系统概述 19 4.2.2系统组成 19 4.3实验仿真 20 4.3.1仿真实验接线 20 4.3.2 仿真实验演示 21 5 总结与展望 23 致谢 24 参考文献 25 附 录 27 1 绪 言 本章阐述了红外遥控智能密码锁的研