基于可见光通信的无线语音收发系统设计与实现  

Design and Implementation of Wireless Voice Transceiver System Based on Visible Light Communication

作　　者：林关成 LIN Guancheng(College of Physics and Electrical Engineering,Weinan Normal University,Weinan 714099,China)

机构地区：[1]渭南师范学院,物理与电气工程学院,陕西渭南714099

出　　处：《微型电脑应用》2024年第12期10-14,共5页Microcomputer Applications

基　　金：国家自然科学基金项目(11574250);陕西省重点研发计划项目(2020GY-051);陕西省教育厅科研计划重点项目(20JS044);陕西省网络数据分析与智能处理重点实验室开放基金项目(XUPT-KLND(201901))。

摘　　要：针对无线接入网频谱资源开发、光载无线通信技术中存在的问题及电磁辐射干扰,为了探索一种频谱资源、绿色节能的高效数据传输方式,设计基于可见光通信技术的无线语音收发系统。系统发送端利用音频采集电路把语音信号转换为电信号,通过LED驱动电路将滤波和放大后的语音信号加载至LED可见光波,采用光信号的形式传输发送信息;系统接收端利用光电二极管接收光信号同时转换为电信号,采用光电检测电路和功率放大电路对电信号进行处理和放大,通过扬声器输出语音信号,实现语音信号的短距离无线传输。实验测试表明,通信距离在15~55 cm,系统利用可见光传输语音信号效果理想,具有传输速率高和能量损耗低等特点,满足总体设计要求,具有一定的应用推广价值。Aimed at the limitation of spectrum resource development of wireless access network,optical wireless communication technology and electromagnetic radiation,in order to explore a kind of untapped spectrum resources,green energy efficient data transmission,a wireless voice transceiver system based on visible light communication technology is designed.The sending end of the system uses the audio acquisition circuit to convert the voice signal into an electrical signal,and uses a filter circuit and a power amplifier circuit to filter and amplify the electrical signal,loads this electrical signal onto the LED wave through the LED drive circuit,the voice signal is radiated to the freedom of the airspace in the form of light signal,information is sent completely.At the receiving end of the system,the photodiode is used to receive the optical signal and convert it into the electrical signal at the same time,the photoelectric detection circuit and power amplifier circuit are used to further process and amplify the electrical signal,the voice signal is output through the loudspeaker.The test results show that the system has an ideal voice communication effect within a distance of 15 to 55 cm.The system has the characteristics of high transmission rate and low energy loss,so this system can meet the overall design requirements,and it has a promotion of value in the applications.

关 键 词：可见光通信 光电检测 LED驱动 语音传输 无线收发 

分 类 号：TN929.12[电子电信—通信与信息系统]