Laser scanner gauges track geometry

The shoebox-sized scanner works with an eye-safe laser. It measures 800 profiles and performs 2 million measurements per second.

Detailed 3D point cloud

The measurements result in a high-resolution 3D image. Suitable algorithms extract the desired parameters from the measurement data.

Track Geometry

High-precision recording of track-related infrastructure

Nowadays, rail tracks and its infrastructure – such as sleepers or track beds – are usually recorded with camera-based systems. If, however, the ambient light is insufficient, artificial lighting is required; additionally, processing and evaluation of the data is quite complex. This is why Fraunhofer IPM has developed a laser scanner for the geometrical measurement of rails, railheads, sleepers and rail beds.

Rail Track Scanner RTS

The compact RTS is mounted on any rail vehicle only 1.2 meters above the track bed. An eye-safe laser scans the rails traversal to the forward motion of the vehicle over a width of approximately 1.7 meters. Two million measurements and up to 800 profiles per second form the basis for a very detailed, three-dimensional image of the rail tracks and the infrastructure directly linked to it. Suitable algorithms allow parameters such as distance, height and inclination of the rail track or the railhead geometry to be extracted from the point cloud generated in this way and to be compared with target profiles. The scan frequency can be adapted flexibly to the relevant task. Topographic structures and structural changes are reliably detected with a measurement uncertainty of less than one millimeter.