一种简易红外通信装置的设计与实现  

The Design and Implementation of a Simple Infrared Communication Device

作　　者：李一鸣[1] 荣军[2] 王岳斌[1] 严权峰[1] 彭锦[1] 

机构地区：[1]湖南理工学院计算机学院,湖南岳阳414006 [2]湖南理工学院信息与通信工程学院,湖南岳阳414006

出　　处：《电子器件》2015年第6期1385-1392,共8页Chinese Journal of Electron Devices

基　　金：湖南省教育厅一般项目(15C0620;15C0622)

摘　　要：设计了一种简易数字控制红外通信装置,系统硬件部分由红外发射电路、红外接收电路和中转电路3部分组成。系统以STM32F051C4为控制核心,以红外线为载体,采用PWM调制技术、曼彻斯特编码方式,实现了语音和温度信号的实时传输。系统设计完成后经过实验测试,在输入800 Hz的正弦信号,输出电压有效值不低于0.4 V时,红外光发射电路与红外光接收电路之间的传输距离最大为4 m,输出的噪声电压小于40 m V;电路最大供电电流不超过20 m A。A simple and digital controlling infrared communication device has been designd,and the hardware ofthe system is made up an infrared emitting circuit,an infrared receiving circuit and a relay circuit. The system usesSTM32F051C4 as the control center,and the infrared light as the carrier,adopts PWM modulation technique andManchester encoding to realize the real- time transmission of voice and temperature signal. After the system hasbeen completed through the experimental test,the effective value of output voltage is not less than 0.4 V when re-ceiver inputs 800 Hz sine signal,and the maximum transmission distance is 4 m between the infrared transmitterand infrared receiver circuit. When decreasing the range of the input signal in transmitting terminal to 0 V,thenoise outputted voltage is less than 40 m V,and the circuit for maximum supply current does not exceed 20 m A.

关 键 词：红外通信 PWM调制 曼彻斯特编码 占空比 奇偶校正 

分 类 号：TM29[一般工业技术—材料科学与工程]