基于单片机的红外翻页控制器的设计.doc

摘要 在教学、产品演示中，将PPT与投影仪配合使用，有很好的放映效果。针对操作者需要不断在计算机前操作鼠标才能实现幻灯片的放映这一不便之处，本文设计了一种结构简单，成本低廉，性能可靠的红外PPT翻页控制器，可以进行远距离控制PPT的放映。之所以选择红外线技术，是因为红外通信数据传输装置电路简单，易于实现，在一些需要数据交换的场合，当数据量不是很大，实时要求不是很高的情况下，使用红外通信方式，可以完成低误码率、高速率的信息传输。 本设计采用单片机来构建红外发射电路和解码电路，采用USB接口芯片PDIUSBD12来实现USB设备的枚举和数据传输，实现与PC机的USB总线通信，进而实现对PPT翻页的控制，且实现了设备的热插拔。该控制器可大大增强PPT演示人员与观众的交流。 关键词：红外编码、红外解码、单片机、PDIUSBD12芯片 Abstract In the school teaching and product demonstration,coordination PPT and the projecting apparatus has showed good effect. In view of the inconvenience which the coperator needs to operate the mouse constantly beside the computer .The paper is designed about the infrared controller which controls PPT remotely ,and is simple mechanism,low cost,and reliable performance. Infrared technology was chosen because infrared communication data transmission device circuit is simple and very easy to realize.In some occasions where it needs to exchange data and the data capacity is not large and the real-time requirement is not harsh ,the use of infrared communication mode can complete information transmission in the low-error rate and the rate of high-speed way. The design uses a microcontroller to build infrared transmitter circuit and decoding circuit. PDIUSBD12 which is USB interface chip is used to implement USB device enumeration and data transfer, and realize the USB-bus communication of PC device, so as to realize the control of the PPT page.And it realize the effect of hot-plug. The controller can greatly enhance the PPT presentation personnel exchanges with the audience. Keyword: IR codes IR decoding SCM PDIUSBD12 chip 目录 摘要 1 Abstract 2 1 前言 5 1.1 红外遥控的认识 5 1.1.1 遥控技术 5 1.1.2 红外通信的协议标准 5 1.1.3 红外遥控的基本原理 6 1.1.4 单片机和红外线控制 6 1.2 USB接口技术 7 1.2.1 USB技术简介 7 1.2.2 PDIUSBD12芯片特点 7 1.3 论文研究内容和意义 7 1.3.1 研究内容 7 1.3.2 研究意义 7 2 系统分析 9 2.1 方案论证 9 2.2 总体设计框图 11 3 红外发射电路设计 12 3.1 单片机及其硬件电路设计 12 3.1.1 单片机的介绍 12 3.1.2 振荡电路 15 3.1.3 复位电路 15 3.1.4 按键电路 16 3.1.5 红外发射二极管电路 16 3.2 单片机红