51单片机红外收发器设计

电子机电论文编号:JD1090  论文字数:11472,页数:41

目  录

 摘  要 I
 ABSTRACT II
 1 绪论 1
 1.1研究背景 1
 1.2研究目的 1
 1.3研究意义 1
 2 系统分析 3
 2.1设计要求 3
 2.1.1整个控制系统的设计要求 3
 2.1.2红外载波、编码电路设计要求 3
 2.1.3 红外解码电路设计要求 3
 2.1.4 设备扩展模块设计要求 3
 2.2总体设计方案 4
 2.2.1 方案论证 4
 2.2.2 总体设计框图 6
 2.3 方案的可行性论证 7
 2.3.1 实用性 7
 2.3.2 经济可行性 7
 2.3.3 技术可行性 7
 2.4小结 7
 3 硬件设计 8
 3.1单片机及其硬件电路设计 8
 3.1.1 单片机的介绍 8
 3.1.2 时钟电路及RC复位电路 9
 3.2 单片机红外发射器的电路设计 11
 3.2.1  矩阵键盘电路 11
 3.2.2  红外发射电路 12
 3.3 单片机红外接收器的电路设计 15
 3.3.1  红外接收电路 15
 3.3.2 电源电路的设计 17
 3.3.3 八路LED开关电路 18
 3.3.4电磁式继电器 18
 3.3.5 LCD1602液晶显示电路 19
 3.4小结 20
 4 程序设计 21
 4.1红外发射模块 21
 4.1.1 发射电路主程序流程图 21
 4.1.2红外发射子程序流程图 22
 4.2红外接收模块 22
 4.2.1红外接收电路主程序流程图 22
 4.2.2红外接收电路子程序流程图 23
 4.3小结 24
 5 系统测试 25
 5.1系统功能测试 25
 5.2小结 26
 参考文献 27
 附  录1 28
 附  录2 32
 附  录3 33
 谢  辞 34

摘  要

 随着科学技术的发展，单片机因其高可靠性和高性价比，在智能化家用电器、仪器仪表等诸多领域内得到了极为广泛的应用。当前单片机对家用电器控制呈现出外型简单化、功能多样化、性能优越化的发展趋向。红外遥控器具用使用方便、功耗低、抗干扰能力强的特点，因此它的应用前景是不可估量。
 本课题以延伸红外无线遥控技术为目的，提出了一种红外遥控器集中控制的方案，核心是设计出一个无线红外多路遥控发射/接收系统。本设计以红外线作为传递信息的载体，可对8个受控对象的工作状态进行短距离无线控制，适用于工业、医疗、家用电器等设备的开启或关闭遥控，也可以对一种设备的八种工作状态同步进行控制，或对2种设备的4种工作状态同时控制。
 该系统可实现的具体参数如下：
1. 遥控距离不小于5m，即红外遥控发射机与红外接收机之间的距离不小于5m； 2. 遥控路数为8路，即可对8个受控设备同时进行开关控制； 
3. 工作频率为38KHz，即红外发射和接收的载频为38KHz；
4. 接收端可显示受控状态。
 
 关键词： 单片机 红外数据发送与接收 八路LED开关电路 键盘控制

51 MCU-based infrared encoder and decoder

ABSTRACT
 With the development of science and technology, SCM because of its high reliability and cost-effective, in the intelligent home appliances, instrumentation and many other areas has been very widely used. Control of the current SCM appliances shown on the simplistic appearance, diversification of function, the development trend of superior performance. Infrared remote control apparatus with easy to use, low power consumption, anti-jamming features, so its prospects are immeasurable.
 The topics to extend the infrared wireless remote control technology for the purpose, a centralized control infrared remote control program, the core is to design a wireless infrared remote control multiple transmit / receive system. The design of an infrared transmission of information as a carrier of controlled object can work 8 state short-range wireless control for industrial, medical, home appliances and other equipment on or off remotely, it can be a device eight kind of working state synchronization control, or two kinds of equipment working state of simultaneous control of 4.
The system can achieve the specific parameters are as follows:
1. Remote control distance is not less than 5m, the infrared remote control transmitter and the distance between the infrared receiver is not less than 5m;
2. Remote control for the 8 large ones, can be controlled on the eight switch control device at the same time;3. Working frequency is 38KHz, the infrared transmission and reception of the carrier frequency of 38KHz;4. Receiver to display control.

 Key words:  MCU  Send and receive IR data  Octal LED switching circuit  
 Keyboard control