System Overview¶
Introduction¶
S.A.A.R.T.H.I. (System for Autonomous Assessment of Railway Track Health Infrastructure), marketed as RailwayMitra, is an autonomous track geometry inspection system developed by ERIC Robotics Pvt. Ltd.
It is designed to replace manual and semi-manual track inspection methods with a self-propelled, sensor-fused platform capable of measuring track geometry parameters continuously at inspection speeds.
Target Users¶
| Role | Use Case |
|---|---|
| ERIC Field Operators | Deploying and operating the system on-track |
| ERIC Engineers | Data analysis, calibration, firmware updates |
| Client PWI / SSE (P.Way) | Reviewing inspection reports and Format C data |
| Trial Coordinators | Managing corridor access and scheduling |
Architecture Overview¶
The system comprises three main subsystems:
1. Mechanical Platform¶
The inspection trolley — a rail-mounted, self-propelled platform carrying all sensor and compute hardware. Designed for gauge-adaptive operation across BG (1676 mm) and standard gauge corridors.
2. Sensor Suite¶
- Laser Rail Profilers — Left and right rail head profile measurement (0.105 mm X resolution, 2 um Z repeatability)
- IMU — Inertial measurement for roll, pitch, yaw
- Wheel Encoder — Odometry for distance-based sampling
- GNSS Receiver — Geo-tagging of measurement positions
3. Compute & DAQ¶
- Edge compute unit running the data acquisition pipeline
- IPC via iceoryx (zero-copy, lock-free)
- Per-service MCAP recording with mission-based folder structure
- Real-time dashboard for operator feedback
Measured Parameters¶
| Parameter | Description | Reference Standard |
|---|---|---|
| Gauge | Distance between inner faces of rail heads at 14 mm below rail top | IRPWM Chapter II |
| Cross-level | Relative height difference between left and right rail | EN 13848-1 |
| Alignment | Lateral deviation (versine method) | IRPWM Chapter II |
| Twist | Rate of change of cross-level over base length | EN 13848-1 |
| Unevenness | Vertical profile irregularity | EN 13848-1 |
What's Next¶
-> Unboxing & Setup — Get the system out of the case and ready to go.