Smart Rail Wheelset Bearing

Patent metadata

Field	Value
Publication number	US-2019391049-A1
Application number	US-201816015449-A
Country	US
Kind code	A1
Filing date	Jun 22, 2018
Priority date	Jun 22, 2018
Publication date	Dec 26, 2019
Grant date	—

Abstract

In some embodiments, a method (and system) may include measuring data points within (or on) a wheelset environment. The wheelset environment may be local to a wheelset of a train. The method (and system) may compare a signature of the data points of the wheelset environment to an expected signature. The expected signature may represent a baseline of normal operations within a rail environment. The method (and system) may determine a condition within the rail environment responsive to the comparison of the signature to the expected signature.

First claim

What is claimed is:

1 . A method comprising:
measuring data points within a wheelset environment, the wheelset environment local to a wheelset of a train; comparing a signature of the data points of the wheelset environment to an expected signature, the expected signature representing a baseline of normal operations within a rail environment; and determining a condition within the rail environment responsive to the comparison of the signature to the expected signature.

2 . The method of claim 1 , further comprising communicating the determined condition to one or more devices across a network.

3 . The method of claim 1 , wherein the condition is a fault within the rail environment, the condition including any of:
an actual failure; a potential failure, the potential failure including one or more of a recommendation of maintenance and predicted failure; and the signature deviating from the expected signature over a threshold.

4 . The method of claim 3 , wherein the fault within the rail environment includes at least one of:
a failure of a bearing of the wheelset; a failure of a wheel of the wheelset; a failure of a rail or weld of a track in contact with the train; a misaligned geometry of the track in contact with the train; a derailment of a wheelset; and a failure of an axle of the wheelset.

5 . The method of claim 1 , wherein the data points of the wheelset environment include at least one of:
an acoustic signal; a vibration signal; a rotation of an axle of the wheelset; a temperature; an atmospheric pressure; a time, a location of the wheelset; and a velocity of the wheelset.

6 . The method of claim 5 , wherein the wheelset environment includes a history of one or more of the data points.

7 . The Method of claim 1 , further comprising at least one of:
diagnosing one or more faults within the wheelset environment associated with one or more sensors, the measuring being performed by the one or more sensors, the diagnosing being performed based upon loss of at least one message or signal sent to or received from an external source; and correlating the expected signature to location data.

8 . The method of claim 1 , further comprising harvesting power based upon a rotation of an axle of the wheelset, the harvested power enabling one or more of the measuring, the comparing, the communicating, and the determining.

9 . The method of claim 8 , wherein harvesting power is based upon at least one of:
a self-contained power generator enclosed within a housing of a bearing of the wheelset; and a power generator comprised of a rotor and a stator in an outer housing of a bearing of the wheelset.

10 . A system comprising:
a sensor configured to measure data points of a wheelset environment, the wheelset environment local to a wheelset of a train; a processor; and a memory with computer code instructions stored therein, the memory operatively coupled to said processor such that the computer code instructions configure the processor to implement: comparing a signature of the data points of the wheelset environment to an expected signature, the expected signature representing a baseline of normal operations within a rail environment; and determining a condition within the rail environment responsive to the comparison of the signature to the expected signature.

11 . The system of claim 10 , wherein the processor is further configured to communicate the determined condition to one or more devices across a network.

12 . The system of claim 10 , wherein the condition is a fault within the rail environment, the condition including any of:
an actual failure; a potential failure, the potential failure including one or more of a recommendation of maintenance and predicted failure; and the signature deviating from the expected signature over a threshold.

13 . The system of claim 12 , wherein the fault within the rail environment includes at least one of:
a failure of a bearing of the wheelset; a failure of a wheel of the wheelset; a failure of a rail or weld of a track in contact with the train; a misaligned geometry of the track in contact with the train; a derailment of a wheelset; and a failure of an axle of the wheelset.

14 . The system of claim 10 , wherein the data points of the wheelset environment include at least one of:
an acoustic signal; a vibration signal; a rotation of an axle of the wheelset; a temperature; an atmospheric pressure; a time; a location of the wheelset; and a velocity of the wheelset.

15 . The system of claim 14 , wherein the wheelset environment includes a history of one or more of the data points.

16 . The system of claim 10 , wherein the processor is further configured to perform at least one of:
correlating the expected signature to location data; and diagnosing one or more faults within the wheelset environment associated with one or more sensors, the measuring being performed by the one or more sensors, the diagnosing being performed based upon loss of at least one message sent to or received from an external source.

17 . The system of claim 10 , further comprising an energy harvesting module configured to harvest power based upon a rotation of an axle of the wheelset, the harvested power enabling one or more of the measuring, the comparing, the communicating, and the determining.

18 . The system of claim 17 , wherein the harvesting power is based upon at least one of:
a self-contained power generator enclosed within a housing of a bearing of the wheelset; and a power generator comprised of a rotor and a stator in an outer housing of a bearing of the wheelset.

19 . A non-transitory computer-readable medium configured to store instructions for determining a condition within a rail environment, the instructions, when loaded and executed by a processor, causes the processor to:
measure data points of a wheel set environment, the wheelset environment local to a wheel set of a train; compare a signature of the data points of the wheelset environment to an expected signature, the expected signature representing a baseline of normal operations within the rail environment; and determine the condition within the rail environment responsive to the comparison of the signature to the expected signature.

20 . The non-transitory computer readable medium of claim 19 , wherein the condition is a fault within the rail environment, the condition including any of:
an actual failure; a potential failure, the potential failure including one or more of a recommendation of maintenance and predicted failure; and the signature deviating from the expected signature over a threshold.

Assignees

• Charles Stark Draper Laboratory Inc

Inventors

• Jones Troy B

Classifications

• B61L23/044

  Broken rails · CPC title

• G01M17/10 Primary

  Suspensions, axles or wheels · CPC title

• G01M5/0025

  of elongated objects, e.g. pipes, masts, towers or railways (G01M5/0058 takes precedence) · CPC title

• B61L15/0081

  On-board diagnosis or maintenance · CPC title

• G01M5/0033

  by determining damage, crack or wear · CPC title