基于STM32的VLC音频传输系统  

Visible light communication (VLC) audio transmission system based on STM32

作　　者：郝相林 高小珂 刘宁艳 HAO Xianglin;GAO Xiaoke;LIU Ningyan(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《实验技术与管理》2020年第7期36-39,共4页Experimental Technology and Management

摘　　要：针对可见光通信技术应用,该文提出了一种基于STM32的可见光通信音频传输系统,采用白光LED实现可见光强度调制通信。系统包括服务器、发射端和接收端3个模块。服务器用于存储音频文件并控制播放,在播放音乐时采用UDP协议实现网络通信,将音频数据传输给发射端;发射端由STM32单片机控制接收音频数据并解码,解码后的信号经LED驱动电路调制为可见光信号;接收端采用光电检测元件BPX65将接收到的光信号转换为电信号,再经互阻放大和滤波电路等处理,使扬声器播放出声音。For the application of visible light communication technology, a visible light communication audio transmission system based on STM32 is proposed, and white light LED is used to realize visible light intensity modulation communication. The system includes three modules: server, transmitter and receiver. The server is used for storing audio files and controlling when to play. When the system is working, the UDP protocol is used for network communication, and the audio data is transmitted to the transmitter. The transmitting end of the system uses the STM32 MCU to control the received audio data and decode it. The decoded signal is modulated into a visible light signal by the LED driving circuit. The receiver uses the photoelectric detecting component BPX65 to convert the received optical signal into an electrical signal, and then the signal is processed by a mutual impedance amplification and filtering circuit to make the speaker play the sound.

关 键 词：可见光通信 白光LED 光电二极管 音频传输 

分 类 号：TN929.12[电子电信—通信与信息系统]