本科毕业设计__基于单片机的红外遥控系统设计 单片机与电子技术等专业 .doc

基于单片机的红外遥控系统设计 摘　　要 随着科技的发展以及人们生活水平的提高，各种遥控设备慢慢渗透到人们生活的方方面面，这些遥控设备极大的方便了人们的生活。传统的遥控器采用专用的编码和解码的集成电路芯片，这种电路虽然制作简单，但是用于其键数功能受到限制，只能用于某一特定的电器设备，因而其应用范围受到很大限制。而采用单片机进行设计的遥控系统，具有编程灵活多样、操作码个数可以随意设定等优点。 本设计采用AT89C52作为主控芯片，负责红外数据的解码和执行遥控操作；红外信号采用市场上现有的遥控器产生，它使用的编码芯片是HS6221，采用NEC编码方式；一体化红外接收头HS0038负责红外信号的接收和反向、放大等初步处理；为了更直观的观察红外遥控效果，本系统还增加了数码管来显示接收到的红外数据；使用28BYJ48型步进电机作为红外信号的最终操控的对象，利用遥控器发射不同的数值，实现对步进电机转速的控制。 关键词：单片机；AT89C52；红外遥控；步进电机 Microcontroller-based Infrared Remote Control System Design ABSTRACT With the development of science and technology as well as improvement of living standards, a variety of remote control equipment slowly penetrated into every aspect of peoples lives, these remote control devices, great convenience to peoples lives. Traditional remote control with a dedicated encoding and decoding integrated circuit chip, this circuit, although the production is simple, but for a number of key capabilities may be limited, which can only be used for a particular electrical equipment, and thus its scope of application has been greatly restrictions. Using the remote control system of the single-chip design, with a flexible programming, and operation code number can be set, etc. This design uses AT89C52 as the main chip, decoding and execution of remote operation responsible for the infrared data; infrared signal using the remote control available on the market that had been produced, it uses the encoding chip HS6221 that using NEC encoding; integrated infrared receiver head HS0038 responsible for the initial processing of the infrared signal receiver and reverse amplification; more intuitive observation of infrared remote control effect, the system also adds a digital control to display the received infrared data; 28BYJ48 stepper motor is the final manipulation of the infrared signal object, using the remote control to launch different values ??of the stepper motor speed control. Key Words: MCU; AT89C52; Infrared remote control; Stepper m