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12.03.2015: The use of LTR crates for rails diagnostics system when passing trains

Data acquisition system recieves an information about the impact on the rails from the rolling stock according to various criteria:

  • vertical forces transmitted from the wheel to the rail;
  • lateral forces transmitted from the wheel to the rail;
  • longitudinal forces transmitted from the wheel to the rail;
  • dynamic tensile stresses in the edges of the rail sole;
  • tension in the ballast under the sleeper;
  • stresses on the main ground of the roadbed;
  • deflection of the sole of the rail; lateral rail head release;
  • lateral flattening of the rail sole; transverse movement of the tie in ballast.

This system has been successfully used for several years and continues to progress. The complex includes L-CARD products, the basis of the system is LTR-EU-8 (8-place crate with USB 2.0 interfaces, Ethernet and power supply) with LTR212 modules (specialized ADC module for strain gauges), as well as programs for data acquisition and primary processing to LGraph2 and LTR server.


LTR-EU-8, connected to the data acquisition system


Installation of sensors on the railway


Attaching sensors to the signal conditioning module


Deflectometer installing


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