基于可见光传输的多路数字音频通信系统

Multi-channel digital audio communication system based on visible light transmission

针对现有点对点数字通信系统传输距离近、成本高等问题,采用白光LED设计并实现了基于可见光传输的多路数字音频通信系统。该系统结合音频编解码芯片TP3067实现多路音频信号的复用传输,采用FPGA作为主控制器控制编码信号的时隙。实验结果表明,该系统可实现最高2.048 Mbit/s的传输速率,最多可传输32路音频信号,且传输稳定。

In view of problem of short transmission distance and high cost of existing point to point digital communications system,multi-channel digital audio communication system based on visible light transmission was designed and implemented by use of white LED.The system combines audio codec chip of TP3067 to implement multiplexing transmission of multi-channel audio signals,and uses FPGA as the main controller to control time slot of encoder signals.Experimental results show that the system can achieve transfer rate of up to 2.048 Mbit/s,and audio signal of up to 32-channels can be transmitted stably.