SYSTEM AND METHOD FOR COMPUTING RAIL CAR SWITCHING SOLUTIONS IN A SWITCHYARD INCLUDING LOGIC TO RE-SWITCH CARS FOR BLOCK SIZE

• US 20100324759A1
• Filed: 08/27/2010
• Published: 12/23/2010
• Est. Priority Date: 12/30/2005
• Status: Abandoned Application

• Current Assignee: Canadian National Railway Company
• Original Assignee: Canadian National Railway Company
• Inventors: DOYLE, Gordon, MUINONEN, Kari, MORENCY, Vincent, PATHAK, Anshu, BARKER, Matthew
• Application Number:
  US12/870,081
• Publication Number:
  US 20100324759A1
• Time in Patent Office: Days
• 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. ) An apparatus for determining car switching solutions in a railway switch yard, wherein the railway switch yard contains a switch, a plurality of classification tracks and a reswitching track, the reswitching track defining a path for directing a car from a position downstream the switch to a position upstream the switch, said apparatus comprising:

(1) a data processing entity programmed with software for execution by a CPU for computing a car switching solution for a car of a train block to be carried from the railway switchyard by a departure train, the computing of the car switching solution includes determining whether the car is to be switched by the switch to a classification track or to the reswitching track by using as a factor a parameter of the train block to be carried by the departure train;

(2) an output for releasing data conveying the computed car switching solution.

2. ) An apparatus as defined in claim 1, wherein the parameter of the train block is the size of the train block.

3. ) An apparatus as defined in claim 2, wherein the railway switch yard is a hump switch yard.

4. ) An apparatus as defined in claim 2, wherein the railway switch yard is a flat switch yard.

5. ) An apparatus as defined in claim 3, wherein the reswitching track includes a re-humping track.

6. ) An apparatus as defined in claim 2, wherein the data processing entity compares the size of the train block to a threshold in determining if the car of the train block is to be switched to a classification track or to the reswitching track.

7. ) An apparatus as defined in claim 6, wherein the data processing entity determines that the car is to be switched to the reswitching track when the size of the train block is below the threshold.

8. ) An apparatus as defined in claim 6, wherein the data processing entity determines that the car is to be switched to a classification track when the size of the train block is above the threshold.

9. ) An apparatus as defined in claim 2, wherein the data processing entity includes an input which receives information about an expected time of departure of the departure train.

10. ) An apparatus as defined in claim 2, wherein the data processing entity computes an expected switch time for one or more cars of the train block, the expected switch time for a car of the train block indicating an approximate time at which the car is expected at the switch.

11. ) An apparatus as defined in claim 9, wherein the data processing entity uses the expected time of departure as a factor in determining whether the car is to be switched to a classification track or to the reswitching track.

12. ) An apparatus as defined in claim 10, wherein the data processing entity computes a time difference between the expected time of departure of the departure train and the expected switch time of a given car as a factor in determining whether the given car is to be switched to a classification track or to the reswitching track.

13. ) An apparatus for determining car switching solutions in a railway switch yard, wherein the railway switch yard contains a switch, a plurality of classification tracks and a reswitching track, the reswitching track defining a path for directing a car from a position downstream the switch to a position upstream the switch, said apparatus comprising:

(1) a data processing entity programmed with software for execution by a CPU for computing a switching solution for cars in a train block to be carried by a departure train, the computing including determining whether the cars of train block are to be switched to a classification track or to the reswitching track by using as a factor the size of the train block;

(2) an output for releasing data conveying the computed switching solution.

14. ) An apparatus as defined in claim 13, wherein the railway switch yard is a hump switch yard.

15. ) An apparatus as defined in claim 13, wherein the railway switch yard is a flat switch yard.

16. ) An apparatus as defined in claim 14, wherein the reswitching track includes a re-humping track.

17. ) An apparatus as defined in claim 13, wherein the data processing entity compares the size of the train block to a threshold in determining if the cars of the train block are to be switched to a classification track or to the reswitching track.

18. ) An apparatus as defined in claim 17, wherein the data processing entity determines that the cars of the train block are to be switched to the reswitching track when the size of the train block is below the threshold.

19. ) An apparatus as defined in claim 17, wherein the data processing entity determines that the cars of the train block are to be switched to a classification track when the size of the train block is above the threshold.

20. ) An apparatus as defined in claim 13, wherein the data processing apparatus determines a size of the train block.

21. ) An apparatus as defined in claim 20, wherein the data processing apparatus determines a size of the train block by using as a factor a time of departure of the departure train.

22. ) An apparatus as defined in claim 21, wherein the data processing apparatus determines a size of the train block by using as a factor a number of cars that belong to a common train block that would be available on time to be carried in the departure train.

23. ) An apparatus for determining car switching solutions in a railway switch yard, wherein the railway switch yard contains a switch, a plurality of classification tracks and a reswitching track, the reswitching track defining a path for directing a car from a position downstream the switch to a position upstream the switch, said apparatus comprising:

(1) a data processing entity programmed with software for execution by a CPU for computing a car switching solution for a car of a train block to be carried from the railway switchyard by a departure train, the computation of the car switching solution includes a selection of at least one car switching option among a set of car switching options, one car switching option of the set including switching the car of the train block to a classification track and another car switching option of the set including switching the car of the train block to the reswitching track, the data processing entity selecting between a car switching option to switch the car to a classification track and a car switching option to switch the car to the reswitching track by using as a factor a size of the train block to be carried by the departure train;

(2) an output for releasing data conveying the computed car switching solution.