Systems and methods for visualizing and analyzing a rail surface

Patent metadata

Field	Value
Publication number	US-2023331267-A1
Application number	US-202217942893-A
Country	US
Kind code	A1
Filing date	Sep 12, 2022
Priority date	Jul 28, 2017
Publication date	Oct 19, 2023
Grant date	—

Abstract

A system for analyzing a railroad track comprises a transport device, a camera coupled to the transport device, an electronic display device, a memory device, and one or more processors. The camera is disposed adjacent to a rail of the railroad track and generates image data reproducible as one or more images of at least a portion of a surface of the rail. The processors can produce an image of the rail surface, which includes a plurality of elongated portions. The image is analyzed to identify any defects that exist within each elongated portion of the rail surface. The processors determine a value of a metric for each elongated portion of the rail surface. The metric is associated with the identified defects. The electronic display device displays a graph indicative of the metric for each elongated portion, the image of the rail surface, or both.

First claim

1 .- 78 . (canceled)

79 . A system for visualizing and quantifying surface damage of a railroad track, the system comprising:
a camera configured to be coupled to a transport device such that the camera is (i) disposed adjacent to a rail of the railroad track and (ii) configured to generate image data reproducible as an image of a surface of the rail, the transport device being configured to travel along the railroad track; an electronic display device; a memory device configured to receive and store therein the generated image data; and one or more processors configured to:
produce, based on the image data, a plurality of first images, each of the plurality of first images being of a respective elongated portion of the surface of the rail;
analyze the plurality of first images to identify one or more defects in the surface of the rail within each of the elongated portions of the surface of the rail;
determine a value of at least one metric for each of the elongated portions of the surface of the rail, the at least one metric being associated with the identified one or more defects in the surface of the rail within each respective one of the elongated portions of the surface of the rail; and
cause the electronic display device to display (i) a second image including each of the elongated portions of the surface of the rail and (ii) a graph indicative of the at least one metric for each of the elongated portions of the surface of the rail.

80 . (canceled)

81 . The system of claim 80 , wherein the first visual marker indicates a first location in the second image along the surface of the rail, and wherein the second visual marker indicates the value of the at least one metric at a corresponding one of the elongated portions of the surface of the rail that includes the first location.

82 . The system of claim 81 , wherein movement of the first visual marker from the first location along the surface of the rail to a second location along the surface of the rail causes the second visual marker to indicate the value of the at least one metric at a corresponding one of the elongated portions of the surface of the rail that includes the second location.

83 . The system of claim 79 , wherein each of the elongated portions of the surface of the rail extends a distance along a length of the rail.

84 . The system of claim 79 , wherein the one or more processors are configured to cause the electronic display device to display only the graph indicative of the at least one metric for each of the elongated portions of the surface of the rail.

85 . The system of claim 79 , wherein the graph indicative of the at least one metric shows the value of the at least one metric along a length of the rail for each of the plurality of elongated portions of the surface of the rail.

86 .- 87 . (canceled)

88 . A system for visualizing and quantifying surface damage of a railroad track, the system comprising:
a camera configured to be coupled to a transport device such that the camera is (i) disposed adjacent to a rail of the railroad track and (ii) configured to generate image data reproducible as an image of at least a portion of a surface of the rail, the transport device being configured to travel along the railroad track; an electronic display device; a memory device configured to receive and store therein the generated image data; and one or more processors configured to:
produce, based on the image data, an image of the surface of the rail, the surface of the rail in the image including a plurality of elongated portions;
divide the image of each of the plurality of elongated portions of the surface of the rail into a plurality of regions;
analyze the divided image to identify one or more defects within each of the plurality of regions of each of the plurality of elongated portions of the surface of the rail;
determine a value of at least one metric for each of the plurality of regions of each of the plurality of elongated portions of the surface of the rail, the at least one metric being associated with the identified one or more defects within each of the plurality of regions of each of the plurality of elongated portions of the surface of the rail; and
cause the electronic display device to display a graph indicative of the at least one metric for each of the plurality of regions of each of the plurality of elongated portions of the surface of the rail.

89 . The system of claim 88 , wherein the processors are further configured to cause the system to transmit, to an external device, (i) the image data, (ii) the image of the portion of the surface of the rail, (iii) the graph indicative of the at least one metric, or (iv) any combination of (i), (ii), or (iii).

90 . A system for visualizing and quantifying surface damage of a railroad track, the system comprising:
a camera configured to be coupled to a transport device such that the camera is (i) disposed adjacent to a rail of the railroad track and (ii) configured to generate image data reproducible as an image of at least a portion of a surface of the rail, the transport device being configured to travel along the railroad track; an electronic display device; a memory device configured to receive and store therein the generated image data; and one or more processors configured to:
produce, based on the image data, an image of the surface of the rail, the surface of the rail in the image including a plurality of elongated portions;
analyze the image to identify one or more defects within each of the plurality of elongated portions of the surface of the rail;
determine a value of a plurality of metrics for each of the plurality of elongated portions of the surface of the rail, the plurality of metrics including at least one metric that is a weighted sum of two or more other metrics, the plurality of metrics being associated with the identified one or more defects within each of the plurality of elongated portions of the surface of the rail; and
cause the electronic display device to display (i) the image of the surface of the rail, (ii) a graph indicative of the plurality of metrics for each of the plurality of elongated portions of the surface of the rail, and (iii) a visual marker indicating the value of each of the plurality of metrics for one of the plurality of elongated portions of the surface of the rail.

91 . The system of claim 79 , wherein the one or more processors are configured to cause the electronic display device to display the image of the surface of the rail.

92 . The system of claim 79 , wherein the one or more processors are further configured to:
divide each of the plurality of first images into a plurality of elongated portions across a width of the surface of the rail.

93 . The system of claim 92 , wherein the one or more processors divide each of the plurality of first images into a plurality of elongated portions such that each of the plurality of elongated portions have generally equal lengths.

94 . The system of claim 79 , wherein the one or more defects include one or more cracks, pitting, or both, and the at least one metric associated with the identified one or more defects within a first one of the plurality of elongated portions of the surface of the rail includes a crack density of the identified one or more cracks, an average crack angle of the identified one or more cracks, an average crack width of the identified one or more cracks, a pitting density of the identified pitting, a surface damage density, a surface region index, or any combination thereof.

95 . The system of

Assignees

• Totalenergies Onetech

Inventors

• Dick Matthew
• Liu Zhipeng
• Yilma Samson

Classifications

• B61L23/044 Primary

  Broken rails · CPC title

• B61K9/10

  for detecting cracks in rails or welds thereof · CPC title

• G01N21/8851

  Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges (G01N21/8806 and G01N21/93 - G01N21/95692 take precedence; optical measurement of dimensions G01B11/00; optical scanning G02B26/10; image transformation G06T3/00; computerised image enhancement G06T5/00; image processing per se for flaw detection G06T7/0002) · CPC title

• G01N21/95

  characterised by the material or shape of the object to be examined (G01N21/89 - G01N21/91, G01N21/94 take precedence) · CPC title

• H04N23/56

  provided with illuminating means · CPC title