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Long-Range RFID Indoor Positioning System for an Autonomous Wheelchair.

João S Pereira^1,2,3

¹Polytechnic Institute of Leiria, School of Technology and Management, Regional University Network, 2411-901 Leiria, Portugal.

Sensors (Basel, Switzerland)

|April 26, 2025

Summary

A novel Radio-Frequency Identification (RFID) indoor positioning system (IPS) precisely tracks inexpensive passive RFID tags over a 12m range. This system enables reliable navigation for autonomous wheelchairs in GPS-denied environments.

Keywords:

IIoT IPS RFID smart wheelchair

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Last Updated: May 10, 2025

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Area of Science:

Robotics
Indoor Positioning Systems
Wireless Sensor Networks

Background:

Global Positioning System (GPS) is ineffective in indoor environments.
Existing Radio-Frequency Identification (RFID) tracking systems have limited range and precision.
Autonomous systems require robust indoor navigation solutions.

Purpose of the Study:

To develop a novel RFID indoor positioning system (IPS) for precise tracking of passive RFID tags.
To implement and test the RFID IPS for an autonomous wheelchair in GPS-denied areas.
To demonstrate a cost-effective tracking solution using inexpensive passive RFID tags.

Main Methods:

Development of a new RFID IPS with an extended 12m detection range.
Utilizing low-cost, sticker-form passive RFID tags for item identification.
Integration of the RFID IPS into a custom-built autonomous wheelchair platform.

Main Results:

The novel RFID IPS successfully locates and tracks passive RFID tags with enhanced precision.
The system demonstrated a 12m operational range, significantly larger than traditional RFID proximity systems.
The RFID IPS was effectively implemented for monitoring and navigation of the autonomous wheelchair.

Conclusions:

The developed RFID IPS offers a viable and precise solution for indoor positioning.
This technology enables reliable navigation for autonomous wheelchairs in environments lacking GPS.
The use of affordable passive RFID tags makes the system scalable and cost-effective for various tracking applications.