本文選題：RGB-LED　切入點(diǎn)：可見(jiàn)光通信　出處：《吉林大學(xué)》2017年碩士論文

【摘要】：可見(jiàn)光通信(Visible Light Communication)技術(shù)由于其低功耗、高速可調(diào)制,并且可實(shí)現(xiàn)高速數(shù)據(jù)通信的特性,在幾年之內(nèi)便受到了世界各界人士的推崇和研究�？梢�(jiàn)光通信的研究局限在于可見(jiàn)光有限的調(diào)制帶寬,研究者們已經(jīng)提出了多種方案進(jìn)行改進(jìn)。本設(shè)計(jì)采用波分復(fù)用技術(shù)設(shè)計(jì)了一款通過(guò)RGB三基色組成三路信道進(jìn)行信息傳輸?shù)南到y(tǒng),通過(guò)三路LED驅(qū)動(dòng),將三種顏色的燈光混合為白光,使得在正常照明的同時(shí)實(shí)現(xiàn)第二功能——信息傳輸。本文首先對(duì)可見(jiàn)光通信的背景和研究意義做了詳細(xì)介紹,列舉了如今國(guó)內(nèi)外可見(jiàn)光通信的研究現(xiàn)狀,目前許多研究學(xué)者的研究項(xiàng)目主要是白光LED通信,基本上都是以熒光型白光LED為主,三基色的研究較少,本文則選擇了對(duì)RGB-LED進(jìn)行通信研究。經(jīng)過(guò)理論研究,設(shè)計(jì)了系統(tǒng)整體方案,制作出了系統(tǒng)樣機(jī)。本系統(tǒng)以ARM7-LPC2148為主控芯片,通過(guò)改進(jìn)的OOK編碼調(diào)制將三路信號(hào)與三路LED驅(qū)動(dòng)電壓分別進(jìn)行耦合加載到RGB-LED上進(jìn)行信息發(fā)送。在系統(tǒng)的接收端,使用四種光電探測(cè)器對(duì)光信號(hào)進(jìn)行接收,然后通過(guò)選擇模塊對(duì)四路信號(hào)中的一路信號(hào)進(jìn)行放大、濾波、整形處理,然后通過(guò)接收端的主控芯片LPC2148進(jìn)行解調(diào)解碼,將數(shù)據(jù)送到液晶屏OLCD12864上進(jìn)行顯示。系統(tǒng)樣機(jī)完成后,對(duì)系統(tǒng)進(jìn)行了測(cè)試,該系統(tǒng)的通信速率為8.4KHz,此系統(tǒng)的最佳通信狀態(tài)為傳輸距離為1.5cm,光強(qiáng)為33701μx。
[Abstract]:Visible light communication (Visible Light Communication) technology due to its low power consumption, high speed modulation, and can realize the characteristics of high-speed data communication, in a few years it has been the world from all walks of life and respected research. Limitations of visible light communication is visible light modulation bandwidth is limited, researchers have proposed a variety of solutions to improve this design using WDM technology to design a system for information transmission through the RGB three color composition of the three channel, driven by three LED, the three color light mixed into white light, to achieve second functions: information transmission in normal lighting at the same time. This paper made a detailed introduction on the background of visible light communication and research significance, are now at home and abroad for visible light communication, research status, current research project many scholars mainly white LED communication base This was all to fluorescent white light LED, three primary research less, we choose the communication study of RGB-LED. Through theoretical research, the overall design scheme of the system, making the prototype system. The system uses ARM7-LPC2148 as the main control chip, through improved OOK code modulation signal and the three road three LED drive voltage are coupled respectively loaded into RGB-LED send information. At the receiving end of the system, using the four photodetector receives the optical signal, and then through the selection module of four signals in a signal amplification, filtering, shaping processing, and then through the main control chip LPC2148 demodulation receiver decoding, the data is sent to the OLCD12864 display on the LCD screen. The system prototype is completed, the system was tested. The communication speed of the system is 8.4KHz, the best communication state of this system for transmission distance It is 1.5cm, and the light intensity is 33701 u X.

【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN929.1

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