Method for applying extensometric sensors in railway tracks
First Claim
1. A method for applying extensometric sensors in railway tracks using electronic analog/digital signal recording equipment and software algorithms to measure mechanical magnitudes in a wheel-rail contact in railways, the method comprising:
- installing extensometric sensors on railway tracks, the extensometric sensors being disposed on first and second aluminum plates arranged on respective sides of a rail in a portion of a railway track, wherein the extensometric sensors are arranged in fours in each respective plate, two of them on an upper part of each respective plate, one placed perpendicularly to another, and another two on a lower part of each respective plate, one placed parallel to another, the extensometric sensors being adapted to measure micro-deformations in the rail;
wherein the two sensors on the upper part of a respective plate on one side of the rail, together with two sensors on an upper part of a corresponding plate placed symmetrically on the other side of the rail form a complete Wheatstone bridge, only sensitive to tensions and compressions produced in the portion of the track and providing a measurement of a vertical force or weight produced thereon;
whereas the two sensors on the lower part of the respective plate, together with two sensors on a lower part of the corresponding plate placed symmetrically in the other side of the rail form another complete Wheatstone bridge only sensitive to the bending of the rail in the portion of the track, measuring a moment produced and a lateral force which portion of the track is subjected to.
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Accused Products
Abstract
The invention relates to a method for applying extensometric sensors in railway tracks, in combination with electronic equipment and a post-processing of the signals and data obtained to measure the stresses on railway tracks and the like, as well as to measure contact forces between the wheel of the vehicle or train and the actual rail on which it is travelling. According to the method, the following is performed: capturing micro-deformations in a known point of the track; analyzing these micro-deformations; identifying the element corresponding to the micro-deformation signal peaks coinciding with the passage of the train over one of the cross members of the track; analyzing the micro-deformation signal peaks previously identified; obtaining signals by means of sensors (5) arranged in plates (6) screwed to the rail (7); and finally calibrating each detected micro-deformation peak and the relationship thereof with the magnitudes to be measured.
13 Citations
9 Claims
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1. A method for applying extensometric sensors in railway tracks using electronic analog/digital signal recording equipment and software algorithms to measure mechanical magnitudes in a wheel-rail contact in railways, the method comprising:
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installing extensometric sensors on railway tracks, the extensometric sensors being disposed on first and second aluminum plates arranged on respective sides of a rail in a portion of a railway track, wherein the extensometric sensors are arranged in fours in each respective plate, two of them on an upper part of each respective plate, one placed perpendicularly to another, and another two on a lower part of each respective plate, one placed parallel to another, the extensometric sensors being adapted to measure micro-deformations in the rail; wherein the two sensors on the upper part of a respective plate on one side of the rail, together with two sensors on an upper part of a corresponding plate placed symmetrically on the other side of the rail form a complete Wheatstone bridge, only sensitive to tensions and compressions produced in the portion of the track and providing a measurement of a vertical force or weight produced thereon;
whereas the two sensors on the lower part of the respective plate, together with two sensors on a lower part of the corresponding plate placed symmetrically in the other side of the rail form another complete Wheatstone bridge only sensitive to the bending of the rail in the portion of the track, measuring a moment produced and a lateral force which portion of the track is subjected to. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification