文档介绍：2013年全国大学生电子设计竞赛
红外光通信系统(F题)
【本科组】
2013年9月7日
组员:廖伟雄
张鑫淼
叶志豪
摘要
该红外光通信系统以STC12C5A60S2单片机作为控制核心,进行信息的采集和处理,利用放大电路以及内置A/D转换芯片实现语音信号的输入,经过红外编码将信号编码调制到465K红外载波上,然后经红外发射电路发射出去,在接收指令时通过红外接收管接受红外信号,经选频放大电路和滤波电路完成解调,通过解码还原数据,同时利用D/A转换和音频放大线路完成语音信号的还原,,硬件部分包括红外发射模块与红外接收模块,其中红外发射模块主要实现的功能是语音信号输入、红外信号编码和红外发射,语音输入模块与红外发射电路组成,红外接收模块主要实现的功能是红外信号接为收、液晶显示温度,由红外接收电路、,把系统划分成发射部分与接收部分,其中发射部分主要包括语音A/D转换程序和红外发射程序,接收部分主要包括红外接收子程序、液晶显示子程序和语音D/,本系统基本实现了单片机红外光通信联络的功能.
关键词:红外通信,调制解调,温度传感,语音传输,A/D、D/A转换
ABSTRACT
The voice contact system with munication as the foundation, the design with STC12C5A60S2 modulator as the core to control, information collection and processing, use Voice input matrix realize instructions, through infrared coding will signal coding modulation to infrared carrier, then by infrared emission circuit launch out, receiving orders through the integration in receiving plete demodulation, through the decoding reduction data, and to use D/A and LCD1602 type LCD display chip plete the corresponding speech broadcast and LCD display task. This design using two pieces of STC12C5A60S2 model respectively of the single chip puter control of the infrared signal the emitting and receiving, hardware including infrared emission module and infrared receiving modules, which infrared emission module mainly realizes function is the Voice input, the infrared signal mands and infrared emission, the Voice input module and infrared emission of circuit, infrared receiving module mainly function of the realization of the infrared signal is received, liquid crystal display and speech broadcast, by infrared to receive.
Keywords: munication, modulator and demodulator; temperature;
Voice transmission; A/D; D/A
目录
1系统方案 1
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2系统理论分析与计算 2
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