tCat incorporates the new functionality of automatic calculation of REFOS

This 2021, from Telice we have been working on improving the LiDAR point cloud processing software integrated in our tCat unit, refining it, and adding new automatic calculation functionalities that our users demand.

Today we focus the blog article on one of these new additions: the automatic calculation of the REFOS.

REFOS is a geometric parameter that locates the catenary pole with respect to the reference system that defines the track axis and the running plane/TOR.

There is a consensus in the sector for its definition, with two alternatives being established:

“Horizontal distance between the inner face of the rail closest to the pole, and the face of the pole facing the track” (REFOS 1 in the picture below).

“Horizontal distance between the track axis and the face of the post facing the track” (REFOS 2 in the image below).

When working with the LiDAR point clouds generated by tCat, a series of assumptions must be made to cover all possible casuistry (poles with their footing above or below the running plane, platform gantry poles, etc.), so that:

  • The points of the cloud representing the poles are recognised by the tCat algorithm according to their rectilinear trend and their minimum distance from the track.
  • The pole gauge is measured at the intersection between the running plane (TOR) and the straight line representing the face of the pole facing the track, or its virtual extension.

The tCat software allows the measurement to be referenced both to the track axis and to the inner face of the rail closest to the post, by selecting the applicable criterion in the “Settings” tab.

The user can also choose between two complementary calculation alternatives:

  • Calculation in the field, in real time: the tCat user can immediately know this parameter by enabling the “REFOS” option in the software interface and clicking on the “MEASURE” button.

  • Post-process calculation in the office: it is not necessary to enable the “REFOS” option in the field measurement software interface. In other words, using the tCat “Inspection analysis” tool, this parameter can be calculated in the office and/or the values automatically recognised by the algorithm can be edited if the field calculation option has been enabled.

An example can be seen in the image below, where after using the “REFOS” calculation option in the office on a measurement profile recorded in the field, the tCat algorithm detects two candidate poles, and the office user must select the pole of interest; in this case, number 1.

The image below shows an example of the workbook generated in a measurement campaign.

By |2021-10-28T10:48:26+00:00October 28th, 2021|Business Cases, , Events, News, All|
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