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工業技術研究院

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技術名稱: LED可見光通訊技術(寬頻應用)

技術簡介

可見光通訊技術(Visible Light Communication System;VLC)可將你我周遭的光源都當成發射訊號的發射器來傳送資料,日常生活中常見的室內外照明光源、顯示器光源、紅綠燈與看板等等,只要是肉眼可見的光源都可以用來當作可見光發射器來傳輸訊號。可見光的波段分布極廣,例如白光或暖白光甚至從紅光至紫光波段等等。 一般統稱發光波長在380nm~780nm的光波為可見光,所以可見光可用頻寬極為寬廣,約有320THz。可見光通訊的調變方式也相對簡易,只需將調變過的0或1的信號載在這些波段的光載波中,在接收端再透過光電轉換,將0或1的資料回復並傳遞至終端設備,便可達到可見光通訊目的。

Abstract

Visible light communication technology (VLC) use lighting as the transmitter transmits signals, such as daily life of common indoor and outdoor lighting, display light, traffic lights and billboards and so on, as long as visible light can be used as a transmitter to transmit signals. Visible light Spectral are very wideband, such as from red to violet band. Usually referred to as the emission wavelength of visible light at 380nm ~ 780nm light waves, so the available bandwidth is very wide about 320THz. Visible light communication modulation approach is relatively simple, signal modulation over 0 or 1 are contained in bands of light carrier, at the receiving end and then through the photoelectric conversion, data recovery 0 or 1, and transmitted to the terminal equipment.

技術規格

1. 具照明與通訊功能 (Phosphor-LED)。 2. 最大PHY Rate 100Mbps上(IR-LED)/下(Phosphor- LED)傳光信號。 3. 傳輸距離可達3m內(依燈具照度定義傳輸速率)。 4. 使用者端提供乙太網路或USB介面版本。 5. 通訊模組功耗約3.5W。

Technical Specification

1. Integration of Lighting and Communication (Based on Phosphor-LED) 2. Max PHT Rate 100Mbps upstream (IR-LED)/ Downstream Traffic (Phosphor-LED) 3. <5m Transmission Distance (depend on lighting illuminance) 4. Support Ethernet and USB Type module 5. Power Supply 3.5W

技術特色

本技術開發之雙向白光Phosphor-LED整合紅外線之可見光通訊(VLC)系統,除了照明之外,還可同時提供高速100Mb/s通訊傳輸應 用,光源指向特性適用於高資訊保密場域。

應用範圍

可應用於室內通訊,如: 會議室、醫院、辦公室應用場域等等…。

接受技術者具備基礎建議(設備)

通訊系統和照明光學系統。

接受技術者具備基礎建議(專業)

具備基本通訊網路系統和照明系統知識。

技術分類 通訊

聯絡資訊

聯絡人:陳瑛芬 企劃與推廣組

電話:+886-3-5917281 或 Email:almada@itri.org.tw

客服專線:+886-800-45-8899

傳真:+886-3-5820240

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