Energy-harvesting railroad tie for self-powered wayside
This technology is a specially designed railroad tie that captures the energy from trains rolling over it and converts that movement into electricity. Each time a train wheel presses down on the rail, internal mechanical components—springs, a ball screw, and a one-way clutch—translate that downward force into a spinning motion that drives a small generator. The one-way clutch ensures the generator only spins in one direction, making the power output cleaner and more usable. The system springs back to its original position after each wheel passes, ready to harvest the next pulse of energy. The electricity generated can power trackside equipment like sensors, signals, or communication devices without needing external power infrastructure.
What you could build
A drop-in replacement railroad tie that continuously generates low-level electricity from passing train traffic to power wayside sensors, signal equipment, or IoT monitoring nodes; primary buyers would be Class I and regional freight railroads and rail infrastructure OEMs seeking to reduce maintenance costs on remote track segments.
Who in Virginia should care
Virginia's Class I rail corridors (CSX, Norfolk Southern) and the Virginia Department of Rail and Public Transportation are natural early evaluation partners, as are defense-adjacent rail logistics operations at installations like Fort Belvoir.
Readiness: Prototype likely
Concept — described but not yet demonstrated. Lab validated — supported by experimental results in the patent. Prototype likely — the text describes a built, working embodiment.
Readiness is inferred from the patent text, not from a lab visit.
The record
- Inventors
- Yu Pan, Lei Zuo, Mehdi Ahmadian
- Granted
- September 10, 2024
- Status
- Granted patent
- Patent number
- 12088180
Ready to talk?
Virginia Tech Intellectual Properties handles licensing for this technology.
Prosim summaries are generated from public patent text and are not legal advice.