System and method for computing car switching solutions in a switchyard using car ETA as a factor

• US 7,983,806 B2
• Filed: 05/11/2010
• Issued: 07/19/2011
• Est. Priority Date: 12/30/2005
• Status: Active Grant

• Current Assignee: Canadian National Railway Company
• Original Assignee: Canadian National Railway Company
• Inventors: Morency, Vincent, Pathak, Anshu, Muinonen, Kari, Barker, Matthew
• Primary Examiner(s): To; Tuan C
• Application Number:
  US12/777,426
• Publication Number:
  US 20100222947A1
• Time in Patent Office: 434 Days
• Field of Search: 701/19, 246/182.AB, 246/162, 246/176, 246/220, 246/415.R, 246/14, 246/2.S, 104/26.1, 104/130.01
• US Class Current: 701/19
• CPC Class Codes: B61L 17/00 Switching systems for classification yards

Abstract

A system for computing car switching solutions in a railway switch yard. The system is computer based and has an input for receiving data conveying information about one or more arrival trains arriving at the switch yard and data conveying information about departure trains to depart the switch yard. A processing entity processes the data and computes car switching solutions for the railcars.

Claims

1. A system for selecting a classification track in a railway switchyard in which to switch a train block, a plurality of classification tracks and a switch, said system comprising:

a. a data processing apparatus having a CPU and a machine readable storage encoded with software for execution by the CPU, the data processing apparatus;

i. determining in several ones of the classification tracks space available for receiving cars from a train block, wherein the train block includes a plurality of cars and at least one of the cars is enroute to the railway switchyard when the determining is performed, the determining including processing with the software first data conveying an expected time of arrival (ETA) of the at least one car, the ETA providing an estimate of the time at which the at least one car is expected at the railway switchyard, to generate second data, the second data indicating if a classification track on which the determining is performed can receive the train block;

ii. selecting a classification track amongst the plurality of classification tracks at least in part on the basis of the second data;

b. the data processing apparatus having an output for releasing results of the selecting.

2. A system as defined in claim 1, wherein the determining includes computing available space in several ones of the classification tracks to receive the train block in its entirety.

3. A system as defined in claim 1, wherein the train block is a first train block, a first classification track of the plurality of classification tracks holding a second train block, the first train block and the second train block belong to different departure trains, the determining computing available space in the first classification track for receiving cars of the first train block.

4. A system as defined in claim 3, wherein the determining includes processing with the software third data conveying a pull time of the second train block, the pull time indicating when the second train block is expected to vacate the first classification track.

5. A system as defined in claim 4, wherein the output releases the results of the selecting before the second train block vacates the first classification track and the results of the selecting indicate that the first classification track has enough space to hold the first train block in its entirety.

6. A system as defined in claim 1, wherein the data processing apparatus computes an expected switch time for one or more cars of the train block, the expected switch time for a particular car of the train block being indicative of an approximate time at which the particular car is expected at the switch.

7. A system as defined in claim 6, wherein the data processing apparatus uses the expected switch time as a factor during the determining.

8. A system as defined in claim 1, wherein the data processing apparatus has in input for receiving the first data.

9. A system as defined in claim 1, wherein the railway switch yard is a hump yard.

10. A system as defined in claim 1, wherein the railway switch yard is a flat yard.

11. A railway switchyard, comprising:

a. a switch;

b. a plurality of classification tracks;

c. a data processing apparatus having a CPU and a machine readable storage encoded with software for execution by the CPU, the data processing apparatus;

1. determining in several ones of the classification tracks space available for receiving cars from a train block, wherein the train block includes a plurality of cars and at least one of the cars is enroute to the railway switchyard when the determining is performed, the determining including processing with the software first data conveying an expected time of arrival (ETA) of the at least one car, the ETA providing an estimate of the time at which the at least one car is expected at the railway switchyard, to generate second data, the second data indicating if a classification track on which the determining is performed can receive the train block;

2. selecting a classification track amongst the plurality of classification tracks at least in part on the basis of the second data;

d. the data processing apparatus having an output for releasing results of the selecting.

12. A railway switchyard as defined in claim 11, wherein the determining includes computing available space in several ones of the classification tracks to receive the train block in its entirety.

13. A railway switchyard as defined in claim 11, wherein the train block is a first train block, a first classification track of the plurality of classification tracks holding a second train block, the first train block and the second train block belong to different departure trains, the determining computing available space in the first classification track for receiving cars of the first train block.

14. A railway switchyard as defined in claim 13, wherein the determining includes processing with the software third data conveying a pull time of the second train block, the pull time indicating when the second train block is expected to vacate the first classification track.

15. A railway switchyard as defined in claim 14, wherein the output releases the results of the selecting before the second train block vacates the first classification track and the results of the selecting indicate that the first classification track has enough space to hold the first train block in its entirety.

16. A railway switchyard as defined in claim 11, wherein the data processing apparatus computes an expected switch time for one or more cars of the train block, the expected switch time for a particular car of the train block being indicative of an approximate time at which the particular car is expected at the switch.

17. A railway switchyard as defined in claim 16, wherein the data processing apparatus uses the expected switch time as a factor during the determining.

18. A railway switchyard as defined in claim 11, wherein the data processing apparatus has in input for receiving the first data.

19. A railway switchyard as defined in claim 11, wherein the railway switch yard is a hump yard.

20. A railway switchyard as defined in claim 11, wherein the railway switch yard is a flat yard.

21. A railway switchyard as defined in claim 11, wherein the output is connected to the switch, the switch being responsive to the data processing apparatus to switch cars in accordance with results of the selecting.