基于51单片机的LED可见光通信系统

摘要

LED可见光通信是应用前景非常广阔的新兴无线光通信技术.根据可见光通信原理,组建了基于STC89C52RC单片机的LED可见光通信系统,发射板和接收板具有较小体积和较低成本.系统链路采用直射式形式,光强度调制——直接检测技术,通过对白光LED的高速调制,利用串口调试软件验证了PC机间的LED可见光通信.实验结果表明,系统在PC机间能够实现简单的单工数据通信.%LED visible light communication is emerging wireless optical communications technology,and it has very broad application in the future.Based on visible light communication principles,the new LED visible light communication system based on the STC89C52RC microcontroller is formed.Transmitter and receiver board are smaller size and lower cost.System uses a direct-link forms and light intensity modulated-direct detection technology,through white light LED high-speed modulation,using serial port debugging software to verify the LED visible light communication between PC machines.Experimental results indicate that the system is able to achieve simple data communications between PC.