摘要
基于可见光通信原理设计了LED可见光模拟通信实验系统，该系统实现了短距离无线传输模拟信号。系统包括三个主要模块：电源、发射端、接收端。实验系统的发射端采用大功率10WLED灯作为信号源，接收端采用高精度TDA2030音频专用功率放大器和20000Hz低通滤波器，用以提升该实验系统的传输距离和效果，经测试该系统可传输300～15000Hz的模拟信号，传输距离可达5m以上，接收到的信号强度大且无明显失真。
A LED visible light communication experimental simulation system that implements the short - range wireless transmission of analog signals is introduced in this paper, which based on visible light communication principle. The system consists of three main modules, power supply, transmitter and receiver. The transmitter uses high -power 10 W LED lamp as the source, and the receiver adopts high precision TDA2030 dedicated audio power amplifier with and 20 000 Hz low - pass filter to enhance the transmission distance and the effect of the experimental system. After testing the system can trans- mit 300 -15 000 Hz analog signals, the transmission distance is up to 5 m and more, and the received signal strength is large and has no obvious distortion.
出处
《电声技术》
2015年第9期37-41,共5页
Audio Engineering
基金
山东省教学研究与改革项目(2012150)
中国石油大学(华东)国家级大学生创新创业训练计划(201410425067)
关键词
LED可见光
无线通信
模拟信号
LED visible light
wireless communication
analog signal
