Abstract

The invention relates to a methodology and means for using extensometric sensors, together with electronic devices and the post-processing of the signals and data obtained, in order to measure stresses on railway tracks and similar and to measure contact forces between the wheel of the vehicle or train and the actual track on which it is travelling. The method consists in: capturing micro-deformations at a known point on the track; analysing these micro-deformations; identifying the element corresponding to the signal peak of the micro-deformations coinciding with the passage of the train above one of the sleepers of the line; analysing the signals of the peaks of the micro-deformations previously identified; obtaining signals using sensors (5) disposed on plates (6) screwed to the track (6); and, finally, calibrating each detected micro-deformation peak and the relationship thereof with the values to be measured.

IPC Classes  ?

• G01B 21/32 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
• G01L 1/18 - Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
• B61K 9/08 - Measuring installations for surveying permanent way
• E01B 35/12 - Applications of measuring apparatus or devices for track-building purposes for measuring movement of the track or of components thereof under rolling loads, e.g. depression of sleepers, increase of gauge