Railway wheels monitoring system and method
First Claim
1. A system to monitor railway wheels having sides arranged in parallel, the sides including an inner side and an outer side and a surface disposed perpendicularly in a space defined between the inner side and the outer side of the railway wheel, comprising:
- a system to measure a profile of the railway wheel comprising stereo cameras, including a first stereo camera and a second stereo camera;
a system to analyze the profile of the railway wheel based on a theoretical two-dimensional model of the railway wheel in a perfect condition; and
a system to analyze the surface of the railway wheel based on a theoretical three-dimensional model of the railway wheel in the perfect condition,wherein the stereo cameras are configured to capture images of the sides of the railway wheel, the first stereo camera capturing first images of the inner side of the railway wheel and the second stereo camera capturing second images of the outer side, andwherein the images captured by the stereo cameras are subjected to computational processing configured to generate a first three-dimensional reconstruction of the first side and a second three-dimensional reconstruction of the second side of the railway wheel.
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Abstract
It is described a system and method to monitor railway wheels, which includes obtaining images of the railway wheel by means of stereo cameras and performing a three-dimensional and two-dimensional model of the railway wheel by means of these images. This two-dimensional model is subjected to analysis of the profile of the railway wheel, comparing it with a two-dimensional model of an ideal wheel and thus measuring the effective wear of its profile. The three-dimensional model is subjected to analysis of the surface of the railway wheel, also comparing it with a three-dimensional model of an ideal wheel and thus measuring the effective wear of its surface.
10 Citations
18 Claims
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1. A system to monitor railway wheels having sides arranged in parallel, the sides including an inner side and an outer side and a surface disposed perpendicularly in a space defined between the inner side and the outer side of the railway wheel, comprising:
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a system to measure a profile of the railway wheel comprising stereo cameras, including a first stereo camera and a second stereo camera; a system to analyze the profile of the railway wheel based on a theoretical two-dimensional model of the railway wheel in a perfect condition; and a system to analyze the surface of the railway wheel based on a theoretical three-dimensional model of the railway wheel in the perfect condition, wherein the stereo cameras are configured to capture images of the sides of the railway wheel, the first stereo camera capturing first images of the inner side of the railway wheel and the second stereo camera capturing second images of the outer side, and wherein the images captured by the stereo cameras are subjected to computational processing configured to generate a first three-dimensional reconstruction of the first side and a second three-dimensional reconstruction of the second side of the railway wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method to monitor railway wheels, comprising:
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capturing a stereo image of both sides of a railway wheel obtained by stereo cameras; calibrating the stereo cameras due to distortions occurring on lenses of the stereo cameras; segmenting the railway wheel; reconstructing a three-dimensional model of the both sides of the railway wheel; removing distorted three-dimensional points, generating greater precision in the reconstructed three-dimensional model; fusioning the three-dimensional points, generating an observed three-dimensional model of the railway wheel; mapping the observed three-dimensional model to an observed two-dimensional model; measuring a profile of the railway wheel; analyzing an observed profile of the observed two-dimensional model of the railway wheel; and analyzing an observed surface of the observed three-dimensional model of the railway wheel. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification