毕业设计-基于51单片机的智能门铃设计.docVIP

PAGE 0 本科毕业设计(论文) (2012届) 论文题目 基于51单片机的智能门铃设计 (英文) The Design of Smart doorbell based on 51 single-chip 所在学院 电子信息学院 专业班级 电气工程及其自动化 学生姓名 学号 指导教师 职称 完成日期 2012 年 月 日 基于51单片机的智能门铃设计 2012年4月 摘 要 随着科技的发展，智能门铃在生活中会越来越多，智能门铃替代门铃的主要方式有智能识别与无线通信功能。无线门铃的英文名称是wireless door phone或wireless doorbell，又称无线遥控门铃或遥控门铃。无线门铃是利用民用无线技术（ Zigbee、 WIFI、 蓝牙、2.4G等）开发出来的一类 门铃。一般的无线门铃有效传输距离约40米。近年来采用2.4G频率无线传输视频或语音信号，传输距离在无障碍环境下传输距离可达400米。无线门铃不需要布线，安装简单灵活，但是传输距离受传输距离和现场环境影响较大。有线门铃正好与之相反。 本课题采用传统的电路设计方法，为设计智能门铃系统，首先从单片机外围电路、红外热释传感器电路、LED数码管电路、RS485通信接口电路以及电源供电电路对系统的硬件进行了设计；然后从主程序结构，显示程序及串行通信程序等方面介绍了智能门铃的软件设计；最后总结设计的经验与教训，进一步认识设计的不足方面。 关键词：单片机；A/D转换；LED数码管；智能门铃 Abstract With the development of science and technology, intelligent doorbell in life, more and more intelligent identification and wireless communication capabilities, the main way of the smart the doorbell alternative doorbell. The English name of the wireless doorbell of wireless door phone, or of wireless affordances are also known as a wireless remote control doorbell, or the remote control doorbell. The wireless doorbell is the use of civilian wireless technology (Zigbee, WIFI, Bluetooth, 2.4G, etc.) developed a doorbell. The wireless doorbell effective transmission distance of about 40 m. In recent years, using the 2.4G frequency wireless transmission of video or voice signals, the transmission distance transmission distance up to 400 meters in a barrier-free environment. Wireless doorbell does not require wiring, installation is simple and flexible, but the transmission distance by the transmission distance and on-site environmental impact. Wired doorbell just the opposite. This topic using the traditional circuit design method for the design of intelligent doorbell system, the first single-chip peripheral circuits, infrared pyroelectric sensor circuit, LED digital control circuit,