Field measurements

Field measurements

Catenary karusell

  • Train running past Fokstua on the Dovre railway line, Norway. Photograph by NTNU/Petter Nåvik.Train running past Fokstua on the Dovre railway line, Norway. Photograph by NTNU/Petter Nåvik.

     

     

  • Parts of the monitoring system mounted on a catenary system, master unit on supoport and one sensor by the steady arm. Photograph by NTNU/Petter Nåvik.Parts of the monitoring system mounted on a catenary system, master unit on supoport and one sensor by the steady arm. Photograph by NTNU/Petter Nåvik.

     

     

  • Some of the sensor mounted on the catenary at Hovin Station. Photograph by NTNU/Petter Nåvik.Some of the sensor mounted on the catenary at Hovin Station. Photograph by NTNU/Petter Nåvik.

     

     

tekst catenary field measurements

Field measurements is an important tool for understanding and analysing the dynamic behaviour of railway catenary systems during train passages. NTNU has in collaboration with Elektromotus developed a monitoring system specifically for this application. The system is designed not to interfere with train operation, and also to resist the disturbance from the electrical currents in the catenary cables.

The monitoring system is easy to mount and unmount, and has been successfully used to measure accelerations on in-operation railway catenary sections throughout Norway. Up to 10 sensors are supported in the system. The sensors consists of a tri-axis accelerometer and a tri-axis gyroscope that can be arbitrarily mounted on the catenary wires, and a master unit that stores the data and controls that the measurements are sampled synchronously.