基于白光LED的可见光通信系统研究

Visible light communication system research based on white LED

针对白光LED可见光语音通信问题,设计了9W白光LED通信系统,实现了300~8000Hz语音信号的传输。首先给出了基于UART的通信系统设计方案,然后制作了白光LED的可见光通信系统硬件装置,最后以该硬件装置为基础进行了单片机程序设计。经过测试,该系统通信距离为36cm,串口波特率为227kb/s,输出语音功率为0.7W,达到了设计要求。

To solve the question of visible light sound commtmication based on white LEDs, a 9W white LED communication system is designed which can realize 300-8000Hz sound signal transmission. Firstly, the paper gives the overall design scheme based on UART according to the requirements. Secondly, the hardware e- quipment is made. Finally, the program of MCU is designed. Testing and practical application show that the communication distance is 36cm, the baud rate is 227kb/s, the sound power is 0.7W, the system reaches the design requirements.