红外遥控装置的设计毕设论文.doc

保密类别? ???? 编 号? ???? xx学院 毕 业 论 文 红外遥控装置的设计 系 别 电子信息科学系 专 业 电子信息工程 年 级 xxxxxxxx 学 号 xxxxx 姓 名 xxxx 指导教师 xxxx 武汉大学珞珈学院 2012年 2 月 28 日摘 要 红外遥控是20世纪70年代才开始发展起来的一种远程控制技术，其原理是利用红外线来传递控制信号，实现对控制对象的远距离控制，具体来讲，就是有发射器发出红外线指令信号，有接收器接收下来并对信号进行处理，最后实现对控制对象的各种功能的远程控制。和部分本设计方案基于市场的需求，结合红外遥控设计简单、作方便、成本低廉等特点ABSTRACT With the kind of household appliances increased and the use of remote controller being more and more universal. Many people start to choose IR (Infra-red) remote-operated controller. But the market of IR (Infrared) learning remote controller is not as well as the technology in our country. In paper a design of IR learning remote-operated controller with touch screen is to be discussed to improve the production of IR learning technology. The traditional method for IR coding is collecting the IR signal through Interrupt mode or Query mode by single-chip microcomputer. In some condition this method needs repeat for many times. In paper, PC (Personal Computer) is used to record the whole wave and optimize the wave through software, which makes it easy to finish the decoding for one time; By experiment, the infrared emission distance is turned to be affected by the duty ratio of carrier wave and the current of IR emitting diode. After debugging, the infrared emission distance is increased to 10 meters. The device is also tested by interfering signal. With the data of experiment and the functionlsqcurvefit of matlab, the wandering of touch screen is settled by the corrected parameters. In color display, every key is simplified by combination of Arrow keys、Enter key and virtual digital tubes, which successfully solve the problem of wasting the resources of single-chip microcomputer. Moreover, in system only BMP (R5G6B5) is supported, and the image size is 176*220(72. 6KB), which is too large to AT89C51. So in paper, a new image compressed format is discussed and the definite format is g