The paper presents the results of a study that monitored the wandering behavior of people suffering from dementia using a Bluetooth Low Energy (BLE) based localization system. The system consists of three main components: a localized device (tag) worn by the user, a set of BLE anchors distributed in the monitored area, and a system controller that processes the measurement data.
The localization algorithm employs an Extended Kalman Filter to predict the user's location based on their previous position and velocity, and then corrects the prediction using the signal strength measurements from the BLE anchors. The system was tested in a long-term care facility with four elderly people diagnosed with dementia who had exhibited wandering behavior.
The experiments revealed several wandering incidents, where the patients repeatedly moved along specific paths covering significant distances in a short time. The localization results were accurate enough to observe the repetitiveness of the movement trajectories, which is a key characteristic of wandering behavior. This demonstrates the potential of the BLE-based system to automatically detect and monitor wandering in persons with dementia, providing valuable information to caregivers.
The authors note that the presented results will be used to develop methods for real-time wandering detection as part of the final IONIS platform, a project focused on developing technologies to support the independent living of elderly people.
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by Marcin Kolak... : arxiv.org 04-01-2024
https://arxiv.org/pdf/2403.19704.pdfMélyebb kérdések