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Related Experiment Video

Updated: Jul 29, 2025

Using a Real-Time Locating System to Measure Walking Activity Associated with Wandering Behaviors Among Institutionalized Older Adults
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Real-Time Indoor Geolocation Tracking for Assisted Healthcare Facilities.

Kinjal Gala1, Paul David Bryden2, Christopher Paolini1

  • 1San Diego State University, San Diego, USA.

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Summary
This summary is machine-generated.

This study introduces an open-source Wi-Fi-based system for real-time indoor tracking of elderly individuals. The technology aims to quickly locate seniors after a fall, reducing injury risks and improving medical response times.

Keywords:
Assisted Healthcare TechnologyIndoor GeolocationIndoor Location SystemIndoor Positioning SystemKalman FilteringLocation TrackingTrilaterationWireless Sensor Networks

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Area of Science:

  • Gerontology
  • Computer Science
  • Wireless Networking

Background:

  • Falls are a primary cause of injury in the elderly.
  • Delayed medical attention after a fall can worsen outcomes, especially for serious injuries like concussions or fractures.

Purpose of the Study:

  • To develop a real-time indoor geolocation system for elderly individuals.
  • To leverage existing Wi-Fi infrastructure for cost-effective tracking.
  • To mitigate harm by enabling faster medical response.

Main Methods:

  • Development of an open-source software framework.
  • Utilizing 802.11 Wi-Fi signals for indoor positioning.
  • Employing trilateration and Kalman filtering for accurate location calculation.
  • Integration of embedded software, web services, and a mobile application.

Main Results:

  • Achieved an indoor location accuracy of within 3 meters in areas with good Wi-Fi coverage.
  • The system provides real-time tracking capabilities.
  • Kalman filtering effectively reduced multipath interference.

Conclusions:

  • The developed framework offers a low-cost, extendible solution for indoor geolocation of elderly persons.
  • This technology can significantly improve response times in fall incidents.
  • Real-time tracking enhances safety and timely medical intervention for a vulnerable population.