Key Highlights
- Four Automated Wheel Profile Measurement Systems (AWPMS) will be deployed across the Indian Railways network.
- The devices use laser scanners and high‑speed imaging to evaluate wheel geometry without physical contact.
- DMRC will procure, install, and commission the equipment, handling the entire project lifecycle.
- Real‑time defect alerts are expected to cut inspection time and enhance train‑operational safety.
- The collaboration fosters technology transfer and skill‑building for railway personnel.
Detailed Insights
The agreement, signed on 4 April 2025, formalises a strategic partnership between Indian Railways and the Delhi Metro Rail Corporation (DMRC). Under the contract, DMRC assumes responsibility for sourcing, installing, and commissioning four Automatic Wheel Profile Measurement Systems (AWPMS) at select railway locations.
AWPMS units employ precision laser ranging combined with high‑frame‑rate cameras to generate a three‑dimensional representation of a wheel’s tread and flange within seconds. Because the analysis is contact‑less, wear patterns are captured without exerting additional stress on the wheel, and any deviation from prescribed tolerances triggers an automatic notification to maintenance crews.
This capability addresses two long‑standing challenges: the labor‑intensive nature of traditional manual wheel inspections and the latency between defect detection and corrective action. By delivering instantaneous, data‑rich diagnostics, the system enables faster maintenance decisions, reduces rolling‑stock downtime, and improves overall train punctuality.
Beyond operational gains, the partnership is positioned as a conduit for knowledge exchange. DMRC’s experience with advanced metro‑level asset management will be shared with Indian Railways, while railway staff will receive training on laser‑based metrology, data interpretation, and preventive maintenance protocols.
Key Concepts
- Automatic Wheel Profile Measurement System (AWPMS): A contact‑less inspection apparatus that utilizes lasers and high‑speed imaging to produce precise wheel geometry readings in real time.
- Contact‑less measurement: A technique that assesses an object’s dimensions without physical interaction, thereby avoiding additional wear or damage.
- Preventive maintenance: A maintenance philosophy that relies on early detection of anomalies to conduct repairs before failures occur, extending asset life and enhancing safety.
- Technology transfer: The systematic sharing of technical expertise, processes, and tools between organizations to build internal capabilities.