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毕业设计 红外接收装置的设计 共82页，26352字
摘 要
随着电子技术的发展，红外遥控技术广泛应用于日常生活之中，例如红外测量体温、红外遥控DVD和电视、音响等。由于红外线遥控器具有体积小、功耗低、功能强、成本低等特点。红外线遥控是目前应用最广泛的一种通信和遥控手段。
本文利用单片机实现了红外遥控中的接收部分,即用某种编码芯片组成的发射电路发射编码,而将经红外预接收电路预处理后的编码信号直接送入单片机中进行解码处理,经过对各个按键的重新定义，显示解码结果和控制结果，并给出了硬件实施方案和编、解码的软件设计流程。
本设计的主要工作是这样的，设计原理图---设计PCB图---硬件安装---软件设计。本设计通过软件程序对红外遥控器发射的脉冲波形检测得出信号码,从而为软件解码提供依据。在控制部分，主要是用遥控器控制三个DS18B20的温度采集的显示。本设计工作的主要过程是这样的，按键----单片机编码----调制并发射----单片机接收、解码----切换通道并显示。本论文的主要成果包括:代码在发光二极管和LED数码管的显示，按键的控制功能是1号，2号，3号键控制1号，2号，3号通道的采集温度，4号为加1控制，5号为减1控制, 其它的待定。
关键词：红外遥控; 软件解码; 单片机;温度采集
ABSTRACT
With the development of the electronic technology, infrared remote-control technology is now widely applied in real life, for example, infrared temperature measurement, infrared remote control DVD and television, audio, and so on. Because of its traits of small size, low waste, strong functions, low cost, and so on. Now, infrared remote control technology is widely used in communication.
This paper realize the receiving of infrared remote control technology based on single-chip microcomputer, which is codes are transmitted through transmitting circuit, then the coding signal is sent to microcomputer to be decoded, which must be pretreated by infrared pre-receive circuit. In order to display the result of decoding and controlling, it is necessary to define keys again. Besides, the executive plan of hardware and the design flow of coding and decoding are introduced.
In this paper, it is the main course of this, the design of the principles of blueprint---the design of PCB blueprint---the equipment of hardware---the design of software. In the paper, pulse waves are sent to infrared remote devices through software program and are examined to get signal codes, which provide evidences for software decoding. In the controlling, it is the main to control the acquisition of temperature about three DS18B20 by infrared remote controller. In this paper, it is the main course of this, SCM coding keys ---- SCM modulation and fired for receiving, decoding ---- control the volume or switch channels and instructions. The main works finished and results obtained are as follows: the display of the codes in the diode and led indicator, Controlling function of keys has: the first, the second and the third keys acquisitive temperature of the first, the second and the third DS18B20, The forth keys is to add one and the fifth keys is to subtract one, when you press the keys every time.
Key words：infrared remote control; decoding software; single-chip computers; the acquisition of temperature
目录
第一章 绪论 1
1.1 引言 1
1.2选题背景与意义 2
1.3 研究内容 3
1.4 本文的结构 3
第二章 主要元件的概述 4
2.1 AT89S51单片机简介 4
2.2 SM0038红外接收头 11
2.2.1 SM0038红外接收头特点 12
2.2.2遥控发射器及其编码 12
2.2.3遥控信号接收 13
2.3 DS18B20温度传感器 14
2.3.1 DS18B20温度传感器性能 14
2.3.2 DS18B20控制方法 16
第三章 硬件电路设计 17
3.1 方案设计的选择 17
3.2 总体方案设计 18
3.3 具体硬件电路设计 19
3.3.1单片机外围电路 19
3.3.2电源电路 19
3.3.3红外接收模块设计 20
3.3.4温度采集模块设计 21
3.3.5红外解码信号及结果显示 21
3.3.6画硬件图 23
第四章 软件设计 25
4.1概述 25
4.2软件设计总流程图 25
4.3软件模块设计 26
4.3.1红外接收模块设计 26
4.3.2温度采集模块设计 29
4.3.3加数，减数模块设计 31
4.3.4 LED显示模块设计 33
第五章 调试过程 35
5.1 硬件调试 35
5.2 软件调试 37
5.2.1各个模块的调试 37
5.2.2 程序联调 38
5.3相关的结果显示 40
5.3.1 按键代码显示 40
5.3.2 DS18B20的ROM序列号的显示 41
5.3.3 最终结果显示 42
第六章 结论 43
6.1 论文总结 43
6.2 感想 43
致谢 45
参考文献 46
附录A：硬件设计原理图与PCB图 47
附录B：软件设计程序 49
附录C：英文资料 72
附录D：英文资