红外多路遥控发射接收系统［毕业设计，精品论文］.doc

红外多路遥控发射接收系统 摘 要：简述了以红外线作为传输媒介的数据通信的工作原理及其广阔的应用前景，给出了多路红外线遥控发射、接收系统的结构原理及其应用电路。该设计以 VD5026、VD5027专用编码解码芯片为核心器件，来实现以红外线为传送信息媒介的短距离无线遥控控制电路，具有准确度高、速度快的特点，本设计广泛应用于工业、医疗、家用电器等设备的开启和关闭控制。因为可以扩展1万多个编码状态，所以也可用于手机、计算机、PDA等的信息传输和对多种工作状态进行控制，因而有很大的推广、实用价值。 关键词：红外通信；调制；编码；解码 Infrared Multi-channel Remote Send and Receive System Liu Jia-jia Electronic Information Science and Technology No: 050522027 Tutor: LI Tian-chao Abstract: Has summarized the infrared remote control data communication principle of work and its broad application prospect, has produced the multi-channel infrared remote control launch, the receiving system structure principle and the application electric circuit. Application specific integrated chips VD5026 designed for modulation and VD5027 designed for demodulation are used in the design as the core component, which take the infrared as the pass-along message medium short distance wireless remote control circuit, which has the accuracy to be high, the speed quick characteristic. This design widely applies in equipment and so on industry, medical service, domestic electric appliances opening with the closure control. Because more than one million code pattern can be extended based on it, it can be used for information transmission for mobile telephone, PC, PDA etc, and control for many work pattern. Thus has the very big promotion, the use value. Key words: Infrared remote control; modulation; Code; Decode 目 录 摘要……………………………………………………………………………………………1 1 引言…………………………………………………………………………………………4 2 红外多路遥控系统…………………………………………………………………………4 2.1 红外线数据通信的工作原理……………………………………………………………4 2.1.1 红外线的定义……………………………………………………………………………4 2.1.2 红外通信定义……………………………………………………………………………4 2.1.3 红外遥控原理……………………………………………………………………………4 2.1.4 红外通信优点……………………………………………………………………………5 2.2 系统方案论证……………………………………………………………………………5 2.2.1方案一……………………………………………………………………………………5 2.2.2 方案二……………………………………………………………………………………5 2.3 系统总体原理框图………………………………………………………………………6 2.4 系统硬件电路设计………………………………………………………………………7 2.4.1 键盘及