A Sensing Framework for Indoor Spatial Awareness for Blind and Visually Impaired Users
A Sensing Framework for Indoor Spatial Awareness for Blind and Visually Impaired Users
复制标题
DOI：
10.1109/access.2018.2886308
复制
发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Zhuorui Yang;A. Ganz
中科院分区：
文献类型：
--
作者：
Zhuorui Yang;A. Ganz
在本文中，我们提出了蓝牙低功耗（BLE）为基础的传感框架，提供真实的时间空间意识的盲人和视障（BVI）用户，同时独立导航通过大型公共场所。所提出的框架包括仅使用从BLE传感器获得的接收信号强度指示符的以下功能：1）确定用户的位置，2）估计用户的移动方向，以及3）检测用户旁边的地标的接近度。我们单独评估这些功能。此外，我们将所提出的框架在PERCEPT室内导航系统和测试它与BVI用户在一个大型的公共场所。测试结果表明，该框架计算的位置，移动方向和地标接近度，虽然不是很准确，但提供了足够的信息，使BVI用户能够独立地在大型室内场地导航。这一结论与诺贝尔奖获得者的发现一致，这些发现证实了内鼻-海马系统的空间性质和大脑中定位系统的存在。
In this paper, we present Bluetooth low energy (BLE)-based sensing framework that provides real time spatial awareness for blind and visually impaired (BVI) users while navigating independently through large public venues. The proposed framework includes the following functionalities using only the received signal strength indicator obtained from the BLE sensors: 1) determining the location of the user, 2) estimating the user’s moving direction, and 3) detecting the proximity of landmarks next to the user. We evaluate these functionalities individually. Moreover, we incorporate the proposed framework in PERCEPT indoor navigation system and test it with BVI users in a large public venue. Testing results show that the location, moving direction, and landmark proximity computed by the framework, although not very accurate, provide sufficient information to enable BVI users to independently navigate in large indoor venues. This conclusion aligns with Nobel Prize winning findings that confirm the spatial nature of the entorhinal-hippocampal system and the existence of a positioning system in the brain.