一种基于BLE的交钥匙室内定位系统,用于原地老化环境下的移动性评估。

PLOS digital health Pub Date : 2025-04-17 eCollection Date: 2025-04-01 DOI:10.1371/journal.pdig.0000774
Haixin Wang, Guha Ganesh, Michael Zon, Oishee Ghosh, Henry Siu, Qiyin Fang
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引用次数: 0

摘要

室内定位系统(IPS)可用于测量家庭活动,这是健康和幸福的重要指标。在这项工作中,我们设计并开发了一个基于蓝牙低功耗(BLE)的IPS,可以识别个人用户;不需要平面图;并允许最终用户执行现场安装/设置。此外,基于BLE信号强度的分布,实现了动态校准过程来学习房间边界。在两个家庭环境中验证了IPS系统的功能和性能。在测试过程中测量原始和滤波后的相对信号强度指标(RSSI)和RSSI的变异性。房间检测是通过比较用户输入位置(地面真实)与IPS检测到的300多个位置的位置来确定的。当使用RSSI和额外的运动传感器时,IPS产生了96%的正确检测房间位置的准确度。与现有的室内定位系统相比,PIR运动和超声波传感器信息的使用提高了有效性。该IPS的易用性和模块化设计使其成为在大规模智能医疗监控系统中实现的良好选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A BLE based turnkey indoor positioning system for mobility assessment in aging-in-place settings.

Indoor positioning systems (IPS) can be used to measure mobility at home, which is an important indicator for health and wellbeing. In this work, we designed and developed a Bluetooth Low Energy (BLE) based IPS that identifies individual users; does not require floorplans; and allows the end-users to perform on-site install/setup. Additionally, a dynamic calibration process is implemented to learn room boundaries based on the distribution of the BLE signal strength. The functionality and performance of IPS system were validated in two residential home settings. Raw and filtered relative signal strength indicators (RSSI) and variability of RSSI were measured during testing. Room detection was determined by comparing a user input location (ground truth) with the IPS detected location for over 300 positions. The IPS produced a 96% accuracy of correctly detecting room location when using RSSI and the additional motion sensors. The use of PIR motion and ultrasonic sensors information provided improved validity when compared with existing indoor positioning systems. The ease of use and modular design of this IPS makes it a good choice for implementation in larger scale smart healthcare monitoring systems.

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