Track database integrity monitor for enhanced railroad safety distributed power

• US 6,434,452 B1
• Filed: 10/31/2001
• Issued: 08/13/2002
• Est. Priority Date: 10/31/2000
• Status: Expired due to Term

• Current Assignee: GE Global Sourcing LLC (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: General Electric Company
• Inventors: Gray, Robert
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Marc-Coleman, Marthe Y.
• Application Number:
  US09/999,461
• Publication Number:
  US 20020072833A1
• Time in Patent Office: 286 Days
• Field of Search: 701/19, 701/117, 246/182.R, 246/122.R, 246/182.B, 246/182.C
• US Class Current: 701/19
• CPC Class Codes: B61L 15/0081 On-board diagnosis or maintenance
• CPC Class Codes: B61L 2205/04 Satellite based navigation systems, e.g. global positioning system [GPS]
• CPC Class Codes: B61L 25/021 Measuring and recording of train speed
• CPC Class Codes: B61L 25/023 Determination of driving direction of vehicle or train
• CPC Class Codes: B61L 25/025 Absolute localisation, e.g. providing geodetic coordinates
• CPC Class Codes: B61L 27/53 for trackside elements or systems, e.g. trackside supervision of trackside control system conditions

Abstract

A distributed power system for remotely controlling a locomotive, the system comprising a position-determining device for determining a position of the locomotive, a pre-stored track database comprising terrain and contour data about a railroad track, a track database integrity monitor for detecting errors with the pre-stored track database, a processor comprising an algorithm to determine a distributed power for the locomotive and to use the track database integrity monitor to determine if errors exist in the pre-stored track database, and a memory device connected to the processor.

Claims

1. A distributed power system for remotely controlling a locomotive, said system comprising:

a position-determining device for determining a position of said locomotive;

a pre-stored track database comprising terrain and contour data about a railroad track;

a track database integrity monitor for detecting errors with said pre-stored track database;

a processor comprising an algorithm to determine a distributed power for said locomotive and to use said track database integrity monitor to determine if errors exist in said pre-stored track database; and

a memory device connected to said processor.

2. The system of claim 1 further comprising a remote monitoring facility and a communication device to communicate between said locomotive and said monitoring facility.

3. The system of claim 1 further comprising a second database comprising situational data.

4. The system of claim 1 wherein said track database integrity monitor detects an error in said pre-stored track database by synthesizing estimated track terrain contours.

5. The system of claim 4 wherein said position-determining device is used to compare said synthesized terrain contours with said pre-stored track database.

6. The system of claim 1 wherein said track database integrity monitor uses a three-dimensional train profile for comparison with said pre-stored track database.

7. The system of claim 1 wherein said track database integrity monitor uses a two-dimensional train profile for comparison with said pre-stored track database.

8. The system of claim 1 wherein said track database integrity monitor uses a one-dimensional train profile for comparison with said pre-stored track database.

9. The system of claim 8 wherein said one-dimensional train profile is a horizontal channel.

10. The system of claim 8 wherein said one-dimensional train profile is a vertical channel.

11. The system of claim 8 wherein said one-dimensional train profile is a time channel.

12. The system of claim 1 wherein said track database integrity monitor uses a disparity algorithm for integrity monitoring.

13. The system of claim 12 wherein said disparity algorithm is a Mean Absolute Difference algorithm.

14. The system of claim 12 wherein said disparity algorithm is a Mean-Square Difference algorithm.

15. The system of claim 1 wherein said memory device stores said pre-stored track database.

16. The system of claim 1 further comprising a second track database created by using said track database integrity monitor.

17. The system of claim 16 wherein said second track database is stored in said memory device.

18. The system of claim 1 further comprising a controller connected to said processor for controlling said locomotive.

19. A method for remotely controlling a locomotive, said method comprising:

determining a position of said locomotive with a position-determining device;

providing a pre-stored track database comprising track terrain and contour information;

providing coupler sensor data;

processing said position of said train, said coupler sensor data and comparing said position with said pre-stored track database to determine a distributed power to apply to said locomotive;

applying a track database integrity monitor to determine whether said pre-stored track database and said position correlate;

if said track database integrity monitor corresponds with said pre-stored track database, calculating and applying a distributed power to said locomotive; and

creating a second track database based on applying said track database integrity monitor.

20. The method of claim 19 further comprising if said track database integrity monitor does not correspond with said pre-stored track database and said position, (warming a) warning locomotive personnel.

21. The method of claim 19 further comprising if said track database integrity monitor does not correspond with said pre-stored track database and said position, operating said locomotive in a safe mode.

22. The method of claim 19 further comprising:

providing a car connected to said locomotive;

providing a coupler connecting said car to said locomotive;

determining a force at said coupler using said processor; and

optimizing said force based on a calculated distributed power.

23. The method of claim 19 wherein said processing step further comprises providing environmental data and factoring in said environmental data when determining said distributed power.

24. The method of claim 19 wherein said processing step further comprises providing situational data and factoring in said situational data when determining said distributed power.

25. The method of claim 19 wherein said track database integrity monitor comprises applying a disparity algorithm for integrity monitoring.

26. The method of claim 19 wherein said track database integrity monitor comprises a dimensional locomotive profile.

27. The method of claim 19 wherein said track database integrity monitor comprises a plurality of dimensional train profiles.

28. The method of claim 19 further comprising saving said second track database in a memory device.

29. A distributed power control system for controlling a train having a master locomotive and a slave locomotive where a car separates said master locomotive and said slave locomotive, said system comprising:

a position-determining device for determining a position of said train;

a pre-stored track database comprising terrain and contour data about a railroad track;

a track database integrity monitor for detecting errors with said pre-stored track database based on a position of said train;

a coupler separating each said locomotive from said car;

a coupler sensor to determine force applied to each said coupler;

a processor comprising an algorithm to determine a distributed power for said locomotive based on data received from said coupler sensor and to use said track database integrity monitor to determine if errors exist in said pre-stored track database;

a memory device connected to said processor; and

wherein said processor controls said train based on a calculated distributed power.

30. The system of claim 29 wherein said track database integrity monitor compares positioning data based on railroad track recently covered by with said pre-stored digitized track database to determine whether an error exists in a position of said train.

31. The system of claim 29 wherein said track database integrity monitor compares positioning data based on railroad track said train is about to cover with said pre-stored digitized track database to determine whether an error exists in a position of said train.

32. The system of claim 31 wherein a forward-looking device is used to identify said railroad track said train is about to cover.

33. The system of claim 29 wherein said track database integrity monitor uses a disparity algorithm.

34. The system of claim 29 wherein said track database integrity monitor detects an error in said pre-stored track database by synthesizing estimated track terrain contours.

35. The system of claim 29 wherein said track database integrity monitor uses a dimensional train profile for comparison with said pre-stored track database.

36. The system of claim 29 further comprising a warning device to notify train personnel that said track database integrity monitor found an error.

37. A method for distributing power in a (training) train with a master locomotive and a slave locomotive, said method comprising:

providing a position-determining device;

determining a position of said locomotive with a position-determining device;

providing a pre-stored track database comprising track terrain and contour information;

providing coupler sensor data;

processing said position of said train, said coupler sensor data and comparing said position with said pre-stored track database to determine a distributed power to apply to said master locomotive and said slave locomotive;

applying a track database integrity monitor to determine whether said pre-stored track database and said position correlate;

if said track database integrity monitor corresponds with said pre-stored track database, calculating and applying a distributed power to said master locomotive and said slave locomotive;

creating a second track database based on applying said track database integrity monitor;

providing couplers in said train;

determining a force at each said couplers using said processor;

optimizing said force based on a calculated distributed power; and

saving said second track database in a memory device.

38. The method of claim 37 further comprising if said track database integrity monitor does not correspond with said pre-stored track database and said position, warming a train personnel.

39. The method of claim 37 further comprising if said track database integrity monitor does not correspond with said pre-stored track database and said position, operating said train in a safe mode.