基于可见光通信技术的便携式光天线设备
Handheld Visible Light Communication Antenna Design
摘要
基于可见光通信技术原理, 设计开发了一款便携式光天线设备, 该设备具有带宽大、安全性高和无电磁辐射污染等优点; 上下行通信链路均使用1 W白光LED(发光二极管)作为发射光源, 能够同时满足照明和通信的需求; 设计了发射机电路和高灵敏度接收机电路, 对传输数据进行曼彻斯特编解码处理, 大幅提升了接收端灵敏度; 使用UART(串行异步收发)接口进行数据收发, 实现了传输速率为115.2 kbit/s、传输距离为3 m的全双工数据收发, 可满足在电磁辐射敏感的场合进行短距低速通信的需求。
Abstract
Based on the principle of Visible Light Communication (VLC) technology, we design a portable antenna light equipment, which has the advantages of large bandwidth, high security, no electromagnetic radiation pollution, etc. The device uplink and downlink use a 1 W white Light-Emitting Diode (LED) as an emission source, which can meet the needs of lighting and communications. We also designed transmitter circuits and high-sensitivity receiver circuits, and data transmission, which is based on the Manchester encoding and decoding process and dramatically improves the sensitivity of the reception end. Using Universal Asynchronous Receiver/Transmitter (UART) send and receive data, we demonstrate a transfer rate of 115.2 kbit/s and 3 m full-duplex data transmission experiment, which satisfy the requirement of the electromagnetic radiation sensitive occasions for short-range demand low speed communication.
丁昆, 张涛, 郑伟波. 基于可见光通信技术的便携式光天线设备[J]. 光通信研究, 2017, 43(1): 76. DING Kun, ZHANG Tao, ZHENG Wei-bo. Handheld Visible Light Communication Antenna Design[J]. Study On Optical Communications, 2017, 43(1): 76.