Challenges We Address

For infrastructure diagnostics, it’s not about a point on a map, but the specific track and a reproducible location on it. Without unambiguous localization, measurement data from different runs cannot be compared.

Satellite Signal Loss

Tunnels, overhead structures, and narrow valleys weaken or interrupt the satellite signal.

Parallel Tracks Remain Open

A single coordinate alone does not differentiate parallel tracks in station and switch areas.

Measurement Errors Accumulate

Odometry and inertial sensors drift without reference points with every distance traveled.

Track geometry is directly integrated into position calculation

OpenTLS combines GNSS, IMU, odometer, and balise with the digital infrastructure model. Because the rail network is already incorporated into the calculation, the position remains stable and track-level precise even with limited satellite reception.

Diagram showing the input sources of the OpenTLS SensorHub and the track-level precise position output.

Sensor Fusion, Precision, and Integration

The key characteristics for track-level precise and reproducible positioning.

Sensor Fusion

GNSS, IMU, odometer, and balise are integrated into one device.

Track-Level Precision

Accuracy under 25 cm in 99% of cases.

For Measurement and Construction Trains

Two configurable odometer outputs.

Manufacturer-Independent

Open interfaces for sensors from various manufacturers.

Easy Installation

Precise position data without the need to build expensive measurement vehicles.

In Use Since 2023

In operational use on SBB diagnostic platforms.

Same Sensor Technology, Two Form Factors

Rack and wall-mount versions feature identical sensor technology and connections. You choose the form factor that suits your installation situation.

Red SensorHub device on a white surface, with OpenTLS, status lights, and connection visible.

Rack Version

Compact 19-inch unit for rack installation.

A pink, wall-mounted SensorHub device with connections and plugs at the bottom.

Wall-Mount Version

Space-saving installation on a wall or control cabinet. Easy retrofitting without additional rack requirements.

So that measurement data remains comparable over years

Assign Measurements

Each measurement is reproducibly assigned to the same location in the network.

Detect Changes

Changes to tracks, switches, superstructure, and overhead lines are automatically detectable.

Plan Maintenance

Maintenance can be planned precisely, and resources deployed efficiently.

Questions about Deployment

Does the SensorHub fit into our vehicles?

In most cases, yes. There are two form factors with identical sensor technology: the 19-inch rack unit and the wall-mount for walls or control cabinets, retrofittable without additional rack requirements.

No. The interfaces are open and documented; data fusion works with sensors from various manufacturers.

Yes. Through fusion with odometry, inertial sensors, balises, and the infrastructure model, the position remains reliable even in tunnels and with signal obstruction.

Yes. The system has been operational with SBB since 2023 and achieves an accuracy of under 25 cm in 99.9 percent of cases.

Find the right form factor for your fleet

Track-level precise, reproducible position from every measurement run, in two form factors, open, and operational in SBB since 2023.

A man with glasses in a black shirt standing in front of a colorful, abstract SCS contact background.
Patrik Wernli

Software
+41 43 456 16 84

Non-binding expert discussion.