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An indoor navigation aid for visually impaired.

机译:室内视力障碍者的助航器。

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摘要

Indoor navigation for visually impaired is a highly challenging area due to the nature of limitations such as absence of GPS, inaccuracies with distance estimation with available technologies such as Bluetooth, Wi-Fi, etc. and particularly with mapping places visited for the first time or places that have been rebuilt to change from original layout. This thesis presents an indoor navigation system using Gimbal proximity beacons. The study aims to develop an easily deployable navigation aid to detect the user's approximate distance from beacons and inform them of their proximity to known locations.;Gimbal proximity utilizes Bluetooth smart beacons to provide a granular level of location awareness enabling application to determine with a high degree of accuracy their relative proximity to the beacon. A study has been performed to capture the signal strength variation of the beacons at different distances and different orientations of the beacon. Using this data a smartphone application has been developed that will help with the deployment and scanning of beacons to estimate user's approximate distance to each of the beacons. The user heading is obtained from the compass on the smartphone. Using the proximity and heading information user is informed of his surroundings with his proximity information of these known locations so that the user can navigate himself in the indoors with little to no help.
机译:由于缺乏GPS之类的局限性,例如蓝牙,Wi-Fi等可用技术的距离估计不准确,尤其是首次访问或绘制地图的地点时,视力障碍者的室内导航是一个极富挑战性的领域重建后的地方要从原始布局更改。本文提出了一种使用云台接近信标的室内导航系统。这项研究旨在开发一种易于部署的导航辅助设备,以检测用户与信标的大概距离,并告知他们与已知位置的接近程度。云台接近度利用蓝牙智能信标提供细粒度的位置感知功能,使应用程序能够以较高的分辨率确定它们相对于信标的准确度。已经进行了研究以捕获在信标的不同距离和不同方向上的信标的信号强度变化。使用该数据,开发了智能手机应用程序,它将有助于部署和扫描信标,以估计用户到每个信标的近似距离。用户方向是从智能手机上的指南针获得的。使用接近度和航向信息,利用他的这些已知位置的接近度信息将周围环境告知用户,从而使用户几乎不需要帮助就可以在室内导航。

著录项

  • 作者

    Gajula, Samatha Kiranmai.;

  • 作者单位

    San Diego State University.;

  • 授予单位 San Diego State University.;
  • 学科 Computer science.
  • 学位 M.S.
  • 年度 2016
  • 页码 46 p.
  • 总页数 46
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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