Development of a Novel Railway Positioning System Using RFID Technology.

Area of Science:

• Railway Engineering
• Geospatial Technology
• Automation and Control Systems

Background:

• Current train positioning systems on railway networks suffer from limited precision.
• Accurate vehicle location is crucial for monitoring equipment like the track recording vehicle (TRV).
• Aligning vehicle data with specific switch and crossing (S&C) locations requires enhanced precision.

Purpose of the Study:

• To test and validate the suitability of Radio Frequency Identification (RFID) technology for precise train positioning.
• To assess RFID's capability in aligning railway vehicles with switch and crossing (S&C) positions.
• To establish a definitive reference point for vehicle location using S&C key features.

Main Methods:

• Installation of two RFID tags on switch-toe and crossing-nose sleepers.
• Utilization of an RFID reader installed underneath the monitoring vehicle.
• Conducting over 400 tests with passive and semi-passive RFID under varied conditions (speed, distance, signal strength).

Main Results:

• Passive RFID technology demonstrated superior performance compared to semi-passive RFID.
• The proposed RFID system successfully provided S&C identification and GPS coordinates as vehicles passed.
• Lab testing and data analysis confirmed the viability of the RFID-based positioning concept.

Conclusions:

• Passive RFID technology is the most suitable for precise vehicle alignment to S&C positions.
• The developed RFID solution offers a significant improvement in train location accuracy within the network.
• This technology provides a definitive reference point for train positioning, enhancing operational data.