毕业设计--红外遥控电子密码锁的设计与实现.doc

毕业设计论文 题 目: 红外遥控电子密码锁的设计与实现 系 别: 计算机学院 专 业: 电子信息工程 班 级: 080403 姓 名: 王善磊 指导教师: 武 伟 2012 年5月17日 摘要： 本设计是以STC89C52为主要芯片，以中断、计数等基本工作方式来控制、判断外部器件的工作、工作状态，结合采用数字信号编码的基本算法，用红外遥控器遥控发送密码、再用红外接收管接收密码，单片机根据红外接收管导通与否和持续时间结合二次调制方式的基本算法还原遥控器发送的密码，再与外部储存器AT24C02储存的密码对比，判断密码是否正确，辅助以LCD12864显示用户的操作结果，以蜂鸣器提醒，再通过矩阵键盘实现输入或修改密码等基本功能实现红外电子密码锁的设计。该设计运用了c语言编写程序，简单、明了，很好的实现了红外通信的要求。在以往设计的基础上，该设计添加了在线烧写程序，极大的方便了用户使用，特别是为工业生产带来了极大的便利。红外电子密码锁具有成本较低、操作方便、体积小、无污染、反应速度快等优势，具有很好的市场价值。 关键词： 编码、解码、密码、红外 Abstract: This design is based on STC89C52 as the main chip to interrupt, counting, and other basic way to control, judge work external device work, working status, combined with the digital signal encoding of the basic algorithm that USES the infrared remote control to send password, and garnish with infrared receiving tube receiving password, SCM according to infrared receiving tube conduction or not, and the time duration of secondary modulation method combined with the basic algorithm reduction of remote control to send password, again with external storage AT24C02 stored password contrast, judge the password is correct, aided by LCD12864 display user operation results to a buzzer remind, again through the matrix keyboard input or modify the password and realize the basic functions of the infrared electronic locks design. This design using c language program, simple, clear, very good realized the infrared communication requirements. In the traditional design, and on the basis of the design added online and write program, great convenience to the user use, especially for industrial production to a great convenience. Infrared electronic locks with low cost, convenient in operation, small in volume, no pollution, reaction speed of advantage, has the very good market value. Key words: Encoding, decoding, password, and infrared 目录 1 总体