To ensure a safe environment for railway operation, track geometry measurements as well as video data are essential; the monitoring of these should be carried out without disturbance to normal railway operation.

For the track environment EURAILSCOUT can provide high precision track geometry data and high quality video images. All data is recorded on vehicles that can operate at speeds up to 160 km/h, thus avoiding any disturbance to other railway operations. The logistics of measuring a defined part of any infrastructure network without missing any sections and without disturbing normal operation is an issue, which should not be underestimated.

Track geometry
With respect to track geometry parameters, the requirements are defined in the European Standard EN13848. However due to national specifics and for historic reasons every client has different needs regarding additional parameters and their definition.

For track geometry recording EURAILSCOUT combines a non contact laser based optical gauge and an inertial measurement system. The location information is gathered by a distance measurement calculation based on the same inertial system together with odometers and satellite based D-GPS data.

Standard geometry parameters recorded are

  •  Track gauge 
  • Vertical profiles (top) 
  • Horizontal profiles (alignment)    

Super elevation (cant)  

  • Twist with different base lengths (calculated from the cant signal)
  • Inclination
  • Equivalent conicity
  • Cross section profile

More specific parameters such as cyclic top, cant deficiency (depending on speed) and dip angle can be part of the product as well. In fact any parameter based on the principal signals can be created.

Both inertial and chord parameters can be provided by the system. It is therefore possible to measure all track geometry parameters according to a national or customer specified standard and according to the new European standard EN 13848 on one single run. Wave length bandwidths and threshold levels can be configured independently or according to specified standards. The system is very flexible and can meet any customer or country specific requirements.

Visual inspection (video)
An additional means to monitor track reliability is the recording of image data. With line scan imaging defect sleepers and missing fasteners can be found an seen. The drivers view images can allow any railroad employee the get a digital view of the track, anytime

Rail corrugation
The non-contact laser-based system for identification of rail corrugation (short wave rail head faults) measured every 5 mm to identify all kinds of corrugation between 10 mm and 1 m on each rail. Up to four wavelength bandwidths can be configured to assess different kinds of corrugation in one single run