《红外发射机设计与实现》课程设计.docVIP

摘要 ABSTRACT The infrared remote control is the most widely used means of a communication and remote control. For the infrared remote control device with small size, low power consumption, strong function, high accuracy and fast speed, It is not only widely used in industrial, medical, home appliances and other equipment for opening and closeing control ，but also used in information transmission and control of a variety of working conditions such as mobile phones, computers, PDA. Among the industrial equipment, using the infrared remote control can isolate Electrical interference in high pressure, radiation, toxic gases, dust and other environments reliably and effectively. This design using the TC9012 chip as the core component,focus on how to use TC9012 to achieve infrared emission circuit design methods.TC9012,created with CMOS technology, is an infrared remote control system for the Toshiba series of special launch integrated circuit. It can add 32 buttons while providing 8 user codes and 3 dual key functions. TC9012 pin settings and external application lines are highly optimized to meet the PCBs layout and low cost. The transmitter circuit uses TC9012 to binary signal to be sent out 38KHz pulse code modulation signal through the infrared emission infrared emission control signal to the infrared as the transmission of information to achieve a short-medium range wireless remote control circuit, which can satisfies the needs of modern life, production and research. Key word: Infrared communication Infrared emission TC9012 目 录 1 引言 1 1.1 红外通信的背景 1 1.2 红外通信技术简介及其发展前景 1 1.2.1 红外无线通信的特点 1 1.2.2 IrDA无线通信协议简介 3 1.2.3 红外无线技术的发展前景 3 1.3 红外辐射 4 1.4 红外控制器 4 2 红外发射系统的设计 6 3 结束语 15 致谢 参考文献 附录  第1章 引言 1.1 红外通信的背景 随着电子技术的发展，无线通信得到了越来越广泛的应用，市场上许多无线通信产品都是基于无线电技术的。然而，无线电信号的频率范围已经非常拥挤，并且各个国家对无线电频谱范围管理都比较严格，可提供的频率范围已经非常短缺。因此，希望找到有一种能够适合各个国家规范要求的无线通信手段。另一方面，电磁波谱的光学范围在全球市场上没有严格管制，并且不需要认证。 随着笔记本和个人数字产品（PDA，Personal Digital Assistant）的增长，已经对用于个人无线传输（PWD,Personal Wireless D