基于高亮度可见led的光学无线

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI:10.1109/IAS.1999.805968

Grantham K. H. Pang, T. Kwan, H. Liu, Chi-Ho Chan

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引用次数: 29

摘要

这篇论文是关于一种由发光二极管(led)构成的照明或信号装置的新用途。这个想法是基于它们的并发使用，用于同时发送信号和通信。led发出的可见光可以通过音频或数据信号进行调制和编码。因此，LED指示灯或交通灯可以成为信息广播设备。这种由高亮度可见led组成的系统可以提供开放空间、无线广播音频或数据信号的功能。给出了一个实现系统并给出了实验结果。设计了一种便携式接收机，用于对光传输信息进行解调。LED交通灯的音频传输距离可达20米以上。光链路采用直接检测的强度调制。该系统仅限于视距通信。然而，这种led的并发使用将开辟许多新的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Optical wireless based on high brightness visible LEDs

This paper is on a novel use of lighting or signaling devices constructed by light-emitting diodes(LEDs). The idea is on their concurrent use for simultaneous signaling and communications. The visible light from LEDs can be modulated and encoded with audio or data signal. Hence, an LED indicator lamp or traffic light can become an information broadcasting device. Such a system made up of high brightness visible LEDs can provide the function of open space, wireless broadcasting of audio or data signals. An implemented system with experimental results is shown. A portable receiver is designed to demodulate the optically transmitted information. The distance for audio transmission of an LED traffic light can reach over 20 m. The optical link employs intensity modulation with direct detection. The system is limited to line-of-sight communications. However, this concurrent use of LEDs will open up many new applications.

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Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)

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