Data improvement system and method

• US 9,002,545 B2
• Filed: 01/07/2011
• Issued: 04/07/2015
• Est. Priority Date: 01/07/2011
• Status: Active Grant

• Current Assignee: Wabtec Holding Corp (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: Wabtec Holding Corp (Westinghouse Air Brake Technologies Corporation)
• Inventors: Olson, Lee, Schouten, Matthew, Wilson, M. Frank
• Primary Examiner(s): EL CHANTI, HUSSEIN A
• Application Number:
  US12/986,482
• Publication Number:
  US 20120179309A1
• Time in Patent Office: 1,551 Days
• Field of Search: 701/19
• US Class Current: 701/19
• CPC Class Codes: B61L 15/0072 On-board train data handling
• CPC Class Codes: B61L 23/00 Control, warning or like safety means along the route or between vehicles or trains
• CPC Class Codes: B61L 27/57 for vehicles or trains, e.g. trackside supervision of train conditions
• CPC Class Codes: G06F 16/122 using management policies backup systems G06F11/1446; file migration policies for HSM systems G06F16/185
• CPC Class Codes: G06F 16/2365 Ensuring data consistency and integrity
• CPC Class Codes: G06F 16/24573 using data annotations, e.g. user-defined metadata
• CPC Class Codes: G06F 16/254 Extract, transform and load [ETL] procedures, e.g. ETL data flows in data warehouses
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques

Abstract

A data improvement system, including an initial database, a verification database, and a processing device in communication with the initial database and the verification database. The processing device receives data from the initial database and the verification database, and determines verification data based thereon. A track data improvement system and a track database improvement system are also disclosed.

Claims

1. A data improvement system, comprising:

an initial database comprising a plurality of data fields representing initial data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof;

a verification database comprising a plurality of data fields representing subsequent data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof; and

a processing device in communication with the initial database and the verification database and configured to;

receive at least one data field from the initial database and at least one data field from the verification database; and

determine verification data based upon the at least one data field from the initial database and the at least one data field from the verification database, wherein the verification data includes at least one of the following;

error data, correction data, flagged data, corrected track data, corrected train data, or any combination thereof,

wherein at least one of the initial database, the verification database, and the processing device is configured to receive source data,

wherein the initial data includes initial track centerline data for a specified position on a track or segment of track, and the subsequent data includes subsequent track centerline data for the specified position on the track as derived from the source data, the processing device further configured to determine verification data in the form of improved track centerline data based at least partially upon the initial track centerline data and the subsequent track centerline data, and

wherein the initial track centerline data defines a centerline of the track, and wherein the subsequent track centerline data defines another centerline of the track.

2. The system of claim 1, wherein the initial data includes initial track data and the subsequent data includes subsequent track data, the processing device further configured to determine error data based upon a comparison of the initial track data and the subsequent track data.

3. The system of claim 2, wherein the initial track data includes track centerline data in the form of at least one coordinate for a specified position on a track, the subsequent track data includes track centerline data in the form of at least one coordinate for a specified position on the track, and the error data includes a cross track error value, the determination comprising:

comparing the at least one coordinate of the track centerline data from the initial track data with the at least one coordinate of the track centerline data from the subsequent track data; and

determining the cross track error value between the track centerline data from the initial track data with the track centerline data from the subsequent track data.

4. The system of claim 3, wherein the processing device is further configured to:

determine an acceptable error margin for the at least one coordinate for the specified position on the track for the initial track data;

compare the acceptable error margin with the determined cross track error value; and

determine whether the cross track error value exceeds the acceptable error margin at the specified position on the track.

5. The system of claim 4, wherein the processing device is further configured to log the specified position on the track where the cross track error value exceeds the acceptable error margin.

6. The system of claim 2, wherein the processing device is further configured to determine corrected track data based at least in part upon the error data.

7. The system of claim 6, wherein the processing device is in communication with and configured to transmit the corrected data to at least one of the following:

a central control system, an on-board controller, a track database, or any combination thereof.

8. The system of claim 2, wherein at least one of the verification database and the processing device is in communication with a geographic information system, and wherein at least a portion of the subsequent track position data is at least partially derived from the geographic information system.

9. The system of claim 1, wherein at least one of the initial data and the subsequent data comprises the source data, and wherein the source data is at least partially derived from at least one of the following:

digitized map data, reported position data, positioning system data, global positioning system data, track centerline data, or any combination thereof.

10. The system of claim 1, wherein the source data is received from an on-board controller of the train, which is in communication with a positioning system configured to provide the source data.

11. The system of claim 1, wherein the source data is associated with a specified position on a track or segment of track and received on at least one of the following:

a continual basis, a periodic basis, a predetermined basis, a dynamic basis, a real-time basis or any combination thereof.

12. The system of claim 1, wherein the source data is associated with a specified position on a track or segment of track, and the source data is collected from a respective plurality of trains, thereby providing aggregate position data for the specified position on the track or segment of track.

13. The system of claim 12, wherein the processing device is further configured to determine a set of subsequent position data based at least partially upon the aggregate position data.

14. The system of claim 1, wherein the on-board controller of the train is in communication with at least one locomotive interface configured to create the source data, which is transmitted from the on-board controller to at least one of the verification database and the processing device.

15. The system of claim 14, wherein at least a portion of the initial data comprises feature initial position data, and at least a portion of the subsequent data comprises feature subsequent position data, the feature subsequent position data at least partially derived from the source data transmitted from the on-board controller.

16. The system of claim 15, wherein the at least one locomotive interface is at least one of the following:

a receiver, a transceiver, a horn system, a cab signal system, a braking system, a drive system, or any combination thereof.

17. The system of claim 15, wherein the source data comprises a signal representative of at least one of the following:

(i) a cab signal;

(ii) horn activation;

(iii) received data;

(iv) transmitted data;

(v) speed;

(vi) braking, or any combination thereof.

18. The system of claim 1, wherein the initial data includes prediction data and the subsequent data includes actual measured data, the processing device further configured to determine error data based upon a comparison of the prediction data and the actual measured data.

19. The system of claim 18, wherein the prediction data includes at least one of the following:

predicted location, predicted position, predicted speed, predicted acceleration, predicted deceleration, predicted performance, predicted stopping position, predicted stopping distance or any combination thereof; and

the actual measured data includes at least one of the following;

measured location, measured position, measured speed, measured acceleration, measured deceleration, measured performance, measured stopping position, measured stopping distance, or any combination thereof.

20. The system of claim 18, wherein the prediction data and the actual measured data each comprise a plurality of data fields obtained from a plurality of wherein the plurality of data fields are associated with a specified one of a plurality of vehicles or groups of vehicles.

21. The system of claim 18, wherein the prediction data includes predicted acceleration, the actual measured data includes measured acceleration, and the error data is calculated based upon a difference between the predicted acceleration and the measured acceleration.

22. The system of claim 18, wherein the prediction data includes predicted stopping distance, the actual measured data includes measured stopping distance, and the error data is calculated based upon a difference between the predicted stopping distance and the measured stopping distance.

23. The system of claim 18, wherein the error data is used to determine at least one of the following:

corrected grade data, corrected feature location, corrected track data, corrected train data, or any combination thereof.

24. The system of claim 18, wherein the determined error data is translated into expected performance data correlated for a specified portion of the track.

25. The system of claim 24, wherein the processing device is further configured to:

compare the prediction data with the actual measured data for a plurality of trains at the specified portion of the track, thereby compiling expected performance data for the plurality of trains;

establish an expected error margin value based upon the compiled expected performance data for the plurality of trains at the specified portion of the track; and

log the identity of any train or locomotive where difference between the prediction data and the actual measured data exceeds the expected error margin value.

26. The system of claim 24, wherein the processing device is further configured to:

compare the prediction data with the actual measured data for a plurality of trains at the specified portion of the track, thereby compiling expected performance data for the plurality of trains;

establish an expected error margin value based upon the compiled expected performance data for the plurality of trains at the specified portion of the track;

determine an acceptable error margin value associated with the expected error margin value; and

log the identity of any train where difference between the prediction data and the actual measured data exceeds the acceptable error margin value.

27. The system of claim 1, wherein the processing device is further configured to:

analyze at least a portion of the plurality of data fields in at least one of the initial database and the verification database; and

translate at least a portion of the plurality of data fields to a readable format for human analysis.

28. The system of claim 1, wherein the initial data comprises initial heading data, and the subsequent data comprises measured heading data, and wherein the processing device determines the verification data by:

comparing the initial heading data and the measured heading data; and

determining heading error data based at least in part upon the comparison.

29. The system of claim 28, wherein at least a portion of the heading error data is associated with at least one position on the track.

30. The system of claim 29, wherein the processing device determines, based at least partially upon the heading error data, at least one of the following:

switch location error, track type data, curvature data, or any combination thereof.

31. A data improvement system, comprising:

an initial database comprising a plurality of data fields representing initial data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof;

a verification database comprising a plurality of data fields representing subsequent data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof; and

a processing device in communication with the initial database and the verification database and configured to;

receive at least one data field from the initial database and at least one data field from the verification database; and

determine verification data based upon the at least one data field from the initial database and the at least one data field from the verification database, wherein the verification data includes at least one of the following;

error data, correction data, flagged data, corrected track data, corrected train data, or any combination thereof,

wherein the initial data comprises initial heading data, and the subsequent data comprises measured heading data, and wherein the processing device determines the verification data by;

comparing the initial heading data and the measured heading data; and

determining heading error data based at least in part upon the comparison, and

wherein the initial heading data defines a heading of a track, and wherein the measured heading data defines another heading of the track.

32. A data improvement system, comprising:

an initial database comprising a plurality of data fields representing initial data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof;

a verification database comprising a plurality of data fields representing subsequent data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof; and

a processing device in communication with the initial database and the verification database and configured to;

receive at least one data field from the initial database and at least one data field from the verification database; and

determine verification data based upon the at least one data field from the initial database and the at least one data field from the verification database, wherein the verification data includes at least one of the following;

error data, correction data, flagged data, corrected track data, corrected train data, or any combination thereof,

wherein the initial data includes prediction data and the subsequent data includes actual measured data, the processing device further configured to determine error data based upon a comparison of the prediction data and the actual measured data,

wherein the determined error data is translated into expected performance data correlated for a specified portion of the track, and

wherein the processing device is further configured to;

compare the prediction data with the actual measured data for a plurality of trains at the specified portion of the track, thereby compiling expected performance data for the plurality of trains;

establish an expected error margin value based upon the compiled expected performance data for the plurality of trains at the specified portion of the track; and

log the identity of any train or locomotive where difference between the prediction data and the actual measured data exceeds the expected error margin value.

33. A data improvement system, comprising:

an initial database comprising a plurality of data fields representing initial data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof;

a verification database comprising a plurality of data fields representing subsequent data, which includes at least one of the following;

track data, identification data, location data, position data, heading data, curvature data, type data, grade data, coordinate data, cross track error data, centerline data, initial modeling data, positioning system data, geographic information system data, time data, log data, prediction data, feature data, train data, collected data, dynamic data, batch data, or any combination thereof; and

a processing device in communication with the initial database and the verification database and configured to;

receive at least one data field from the initial database and at least one data field from the verification database; and

determine verification data based upon the at least one data field from the initial database and the at least one data field from the verification database, wherein the verification data includes at least one of the following;

error data, correction data, flagged data, corrected track data, corrected train data, or any combination thereof,

wherein the initial data includes prediction data and the subsequent data includes actual measured data, the processing device further configured to determine error data based upon a comparison of the prediction data and the actual measured data,

wherein the determined error data is translated into expected performance data correlated for a specified portion of the track, and

wherein the processing device is further configured to;

compare the prediction data with the actual measured data for a plurality of trains at the specified portion of the track, thereby compiling expected performance data for the plurality of trains;

establish an expected error margin value based upon the compiled expected performance data for the plurality of trains at the specified portion of the track;

determine an acceptable error margin value associated with the expected error margin value; and

log the identity of any train where difference between the prediction data and the actual measured data exceeds the acceptable error margin value.