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Title: | 可見光通訊於智慧型行動裝置上的應用 Visible Light Communication for Smart Mobile Devices |
Authors: | Yen-An Chen 陳彥安 |
Advisor: | 黃鼎偉(Ding-Wei Huang) |
Keyword: | 可見光通訊,行動裝置,安卓,發光二極體, VLC,visible light communication,smart mobile devices,Android,Li-Fi,LED, |
Publication Year : | 2015 |
Degree: | 碩士 |
Abstract: | 當發光二極體(LED)的製作成本降低且技術越來越成熟,LED 慢慢地取代其他 傳統光源滿足人們日常照明的需求,無論是節能減碳還是有較長的使用壽命,都 是 LED 日益趨向主流照明燈具且取代傳統照明的原因。相較於傳統照明,可以快 速開關因此藉由 LED 的特性所發展的可見光通訊,在這些年越來越多研究人員投 入研究,想完整的建構出像 Wi-Fi 或 4G LTE 的系統,並且用各種調變或是不同 的儀器配置,將可見光通訊的傳輸速度慢慢突破。
這幾年智慧型行動裝置普及,使用者可以用很低的代價取得這些裝置,尤其 是安卓裝置相當便宜,人們將行動裝置運用在生活上的很多地方,像是訊息的傳 遞、資訊獲取、消費、娛樂等等,公司和研究機構也因為行動裝置的普及創造新 的應用價值,除了一般的智慧型手機和平板電腦,穿戴型的行動裝置像是智慧型 手錶也在市場上受到消費者的喜愛,因此智慧型行動裝置在人類的生活中扮演一 個相當重要的角色。 此外科學期刊中,有關可見光通訊的文章,研究內容大多主要專注於藉由不 同的調變方式進而提升傳輸的速度,建構可見光通訊新的應用這部分的研究相對 較少,因此本論文想建立一套系統,將可見光通訊技術導入到智慧型行動裝置上, 欲使用相對簡單的架構去達到數據傳輸的目的,盡量符合行動通訊裝置的使用習 慣,在本論文中並透過許多情境測試,歸納適合這套系統的使用時機,藉由這些 測試得到可見光通訊目前和行動裝置最適合的應用項目,且目標在未來將接收與 傳送電路整合至小體積 USB 介面的元件,可直接插入智慧型行動裝置的 USB 埠, 讓使用者直接使用,使可見光通訊成為除了 Wi-Fi、NFC、或是藍芽技術外的選擇。 Owing to lower manufacturing cost and better production technology, the Light-Emitting Diode (LED) takes place of traditional light source gradually. Because of saving energy and longer life, LEDs become the main lighting devices for our daily life. LED can be turned on and turned off in extremely short period, so the characteristic can meet the requirement of the visible light communication (VLC). Hence, in the field, more and more people invent new technology to improve the performance of visible light communication in order to make the VLC be a mature system like the Wi-Fi or the 4G LTE. The smart mobile devices are popular in recent years. Users can get devices at low prices, especially Android devices. People can do many things with smart mobile devices, such as communication, acquiring information, shopping, entertainment and so on. Because smart mobile devices are widespread, companies and research centers create many innovative applications. Besides smart phones and tablets, wearable devices, such as smart watches, are favorable for customers. Hence, smart devices play an important role in human’s daily life. Furthermore, in many science journal papers, most of researches in VLC field focus on the transmission rate by changing different modulations. The applications of VLC are rarely shown on science journal papers, so in the thesis a system that is based on the combination of VLC and smart mobile devices is constructed. The system uses simple but efficient structure and follows the habits of users when it transmits and receives data. By testing in some scenarios, the results that are gotten from the tests are helpful to optimize the system. The noises are reduced, so the data rate and the signal quality become better. Users also have good experience on the App of the system. In the future, the transmitter and receiver of the system will be integrated in a USB chip. Users needn’t learn how to use the system, because it is similar to use the USB equipment that people use recently. Hence, the system provides another option for data transmission besides Wi-Fi, NFC and Bluetooth. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54777 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 光電工程學研究所 |
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File | Size | Format | |
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ntu-104-1.pdf Restricted Access | 4.02 MB | Adobe PDF |
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