基于Andorid平台下的可见光通信室内定位技术研究与实现

发布时间：2018-03-10 12:53

本文选题：可见光通信　切入点：室内定位　出处：《南京邮电大学》2016年硕士论文　论文类型：学位论文

【摘要】：在室内情况下,全球定位系统(Global Positioning System,GPS)的信号大大衰减,不能满足人们日趋增长的室内精确定位需求。可见光通信(Visible Light Communication,VLC)是一种兼顾照明的光通信技术,使用其进行室内定位具有无电磁干扰、保密性好、定位误差较小、易部署、易实现、成本低廉等优点。本论文以智能手机红米2为硬件平台,提出了一种可见光通信室内定位技术方案,并对其展开了系统的研究,主要有以下三个方面的内容:首先,根据室内定位实际需求提出定位方案,该方案将位置标识符(Location identification,Lid)信息加载在快速响应矩阵(Quick Response,QR)码中,然后,将其调制到发光二极管(Light Emitting Diode,LED)阵列上,当用户进入LED阵列照明区域时,在不增加任何硬件的智能手机接收并识别光信号,解析出LED阵列发送的定位信息,并利用该信息与SQLite数据库相匹配,进而得到地图以及标明特定产品所在的区域,完成定位功能。其次,验证该了方案的可行性。在发送端,使用XMplayer3将Lid加载到LED阵列上,在接收端,使用MATLAB对QR码预处理进行模拟。结果表明,发送端能够调制LED阵列,并且接收端能够还原正确的QR码符号。最后,设计并搭建室内定位平台,包括发送端硬件的选取、信号的加载、调制和接收端的Android平台搭建以及定位软件的设计。调试该定位软件的各个功能模块,以保证其正常运行,然后成功模拟并实现了商场的定位,为基于可见光通信的室内定位系统研究奠定了理论和实验基础。
[Abstract]:Under indoor conditions, the signal of Global Positioning system (GPS) is greatly attenuated and can not meet the increasing demand of indoor precise positioning. Visible Light Communication (VLC) is a kind of optical communication technology which takes lighting into account. It has the advantages of no electromagnetic interference, good confidentiality, small positioning error, easy deployment, easy realization, low cost and so on. In this paper, a visible-light communication indoor positioning scheme is put forward, and a systematic study is carried out on it. The main contents are as follows: firstly, according to the actual needs of indoor positioning, a positioning scheme is proposed. The scheme loads the location identification / Lidinformation into the Quick response Matrix (QR) code, then modulates it onto the light-emitting diode Emitting Diodec LED array, and when the user enters the LED array lighting area, A smartphone that does not add any hardware receives and recognizes optical signals, parses the location information sent by the LED array, uses that information to match the SQLite database, and then gets a map and an area where a particular product is located. Secondly, the feasibility of the scheme is verified. At the sending end, the Lid is loaded into the LED array by using XMplayer3. At the receiving end, the QR code preprocessing is simulated with MATLAB. The result shows that the sender can modulate the LED array. And the receiver can restore the correct QR code symbol. Finally, the indoor positioning platform is designed and built, including the selection of the hardware of the transmitter and the loading of the signal. The Android platform of modulation and receiver and the design of positioning software are designed. The function modules of the software are debugged to ensure its normal operation, and then the market positioning is successfully simulated and realized. It lays a theoretical and experimental foundation for the research of indoor positioning system based on visible light communication.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.1

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