System and method for inspecting a route during movement of a vehicle system over the route

Patent metadata

Field	Value
Publication number	US-9908543-B2
Application number	US-201715485697-A
Country	US
Kind code	B2
Filing date	Apr 12, 2017
Priority date	May 23, 2012
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

A sensing system includes a leading sensor, a trailing sensor, and a route examining unit. The leading sensor is onboard a first vehicle of a vehicle system that is traveling along a route. The leading sensor measures first characteristics of the route as the vehicle system moves along the route. The trailing sensor is disposed onboard a second vehicle of the vehicle system. The trailing sensor measures second characteristics of the route as the vehicle system moves along the route. The route examining unit is disposed onboard the vehicle system and receives the first characteristics of the route and the second characteristics of the route to compare the first characteristics with the second characteristics. The route examining unit also identifies a segment of the route as being damaged based on a comparison of the first characteristics with the second characteristics.

First claim

What is claimed is:

1. A sensing system comprising:
a leading sensor configured to be coupled to a leading vehicle of a vehicle system that travels along a route, the leading sensor also configured to acquire first inspection data indicative of a condition of the route in an examined section of the route as the vehicle system travels over the route;
a trailing sensor configured to be coupled to a trailing vehicle of the vehicle system and to acquire additional, second inspection data indicative of the condition of the route subsequent to the leading vehicle passing over the examined section of the route and the leading sensor acquiring the first inspection data; and
a route examining unit configured to be disposed onboard the vehicle system, the route examining unit also configured to direct the trailing sensor to acquire the second inspection data in the examined section of the route when the first inspection data indicates damage to the route such that both the leading sensor and the trailing sensor acquire the first inspection data and the second inspection data, respectively, of the examined section of the route during a single pass of the vehicle system over the examined section of the route,

wherein the leading sensor is configured to acquire the first inspection data at a first resolution level and the trailing sensor is configured to acquire the second inspection data at a second resolution level that is greater than the first resolution level such that the second inspection data includes a greater amount of data than the first inspection data at least one of per unit time, per unit distance, or per unit area.

2. The sensing system of claim 1 , wherein at least one of the route examining unit or the trailing sensor is configured to select the second resolution level, from among a plurality of available sensor resolution levels, based on at least one of a current speed of the vehicle system, a category of the damage, or a degree of the damage.

3. The sensing system of claim 1 , wherein the leading vehicle and the trailing vehicle are mechanically interconnected with each other by one or more other vehicles in the vehicle system.

4. The sensing system of claim 1 , wherein the first inspection data acquired by the leading sensor and the second inspection data acquired by the trailing sensor are different types of inspection data, with at least one of the types of inspection data being non-optical inspection data.

5. The sensing system of claim 1 , wherein the trailing sensor is configured to acquire the second inspection data responsive to the route examining unit determining that the first inspection data indicates the damage to the route.

6. The sensing system of claim 1 , wherein the route examining unit is configured to direct a controller of the vehicle system to at least one of autonomously control the vehicle system or direct an operator of the vehicle system to decrease slack in one or more coupler devices that couple the trailing vehicle with one or more other vehicles in the vehicle system when the first inspection data indicates the damage to the route and prior to the trailing sensor traveling over the damage to the route.

7. The sensing system of claim 1 , wherein the route examining unit is configured to identify the damage to the route by comparing a first inspection signature representative of changes in magnitudes of the first inspection data with respect to one or more of time or distance along the route with a second inspection signature representative of changes in magnitudes of the second inspection data with respect to the one or more of time or distance along the route.

8. The sensing system of claim 7 , wherein the route examining unit is configured to compare the first inspection signature with the second inspection signature to identify the damage to the route by normalizing one or more of the first inspection signature or the second inspection signature by one or more of expanding or contracting one or more of a time scale or a distance scale of the one or more of the first inspection signature or the second inspection signature, dividing two or more of the first inspection signature, the second inspection signature, or the one or more of the first inspection signature or the second inspection signature that is normalized into smaller signature portions, temporally or spatially correlating the smaller signature portions obtained from the two or more of the first inspection signature, the second inspection signature, or the one or more of the first inspection signature or the second inspection signature that is normalized with each other, and comparing the smaller signature portions obtained from at least one of the first inspection signature, the second inspection signature, or the one or more of the first inspection signature or the second inspection signature that is normalized with the smaller signature portions obtained from at least another one of the first inspection signature, the second inspection signature, or the one or more of the first inspection signature or the second inspection signature that is normalized.

9. The sensing system of claim 7 , wherein the route examining unit is configured to combine the first inspection signature with the second inspection signature to form a net inspection signature of the route, wherein the route examining unit is configured to identify the damage to the route based on the net inspection signature.

10. The sensing system of claim 9 , wherein the route examining unit is configured to combine the first inspection signature with the second inspection signature such that the net inspection signature represents sums of the first characteristics in the first inspection signature and the second characteristics in the second inspection signature.

11. The sensing system of claim 9 , wherein the route examining unit is configured to combine the first inspection signature with the second inspection signature such that the net inspection signature represents differences between the first characteristics in the first inspection signature and the second characteristics in the second inspection signature.

12. The sensing system of claim 7 , wherein one or more of the leading sensor or the trailing sensor include an acoustic pick up device configured to measure acoustics of the route as one or more of the first characteristics of the first inspection signature or the second characteristics of the second inspection signature.

13. The sensing system of claim 12 , wherein the route examining unit is configured to determine one or more of the first inspection signature or the second inspection signature as a frequency spectrum of the acoustics of the route.

14. The sensing system of claim 7 , wherein one or more of the leading sensor or the trailing sensor include a receiver configured to receive light reflected off of the route and the route examining unit is configured to determine one or more of the first inspection signature or the second inspection signature based on the light that is received by the receiver.

15. The sensing system of claim 1 , wherein the leading vehicle and the trailing vehicle are communicatively interconnected with each other by a wireless communication link of the vehicle system.

16. A sensing system comprising:
a leading sensor configured to be disposed onboard a first vehicle of a vehicle system that travels along a route, the leading sensor also configured to measure first characteristics of the route as the vehicle system travels along the route;
a trailing sensor configured to be disposed onboard a second vehicle of

Assignees

• Gen Electric

Inventors

• Cooper Jared Klineman
• Kraeling Mark Bradshaw
• Smith Eugene
• Corry James Glen
• Mckay David Lowell
• Mcmanus Brian Joseph
• Szewczyk Keith
• Noffsinger Joseph Forrest

Classifications

• B61L2205/02

  Global system for mobile communication - railways [GSM-R] · CPC title

• B61L23/042 Primary

  Track changes detection · CPC title

• B61L25/025

  Absolute localisation, e.g. providing geodetic coordinates · CPC title

• B61K9/10

  for detecting cracks in rails or welds thereof · CPC title

• B61L25/021

  Measuring and recording of train speed · CPC title