Back-up and redundancy of modules in locomotive distributed control systems

• US 8,935,020 B2
• Filed: 11/30/2012
• Issued: 01/13/2015
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Progress Rail Locomotive Inc. (Caterpillar Incorporated)
• Original Assignee: Electro-Motive Diesel Incorporated (Caterpillar Incorporated)
• Inventors: Wiemeyer, James Fredrick, Deitz, Michael Patrick, Brown, Dale Alexander, Przybylski, Lawrence Stanley, Rudolph, Wayne Allen
• Primary Examiner(s): Cheung, Mary
• Assistant Examiner(s): BUTLER, RODNEY ALLEN
• Application Number:
  US13/691,103
• Publication Number:
  US 20140156119A1
• Time in Patent Office: 774 Days
• Field of Search: 701/19, 701/20, 701/34.4, 701/31.6, 701/32.7, 105/61, 105/48
• US Class Current: 701/19
• CPC Class Codes: B61C 17/12 Control gear; Arrangements for controlling locomotives from remote points in the train or when operating in multiple units control from points outside the train B61L3/00; fluid-actuated telemotors, servomotors F15B; control devices in general G05

Abstract

The present disclosure is directed to a distributed control system for a locomotive. The distributed system may include a network, a plurality of electronic modules and a plurality of control elements distributed within the locomotive. Each of the electronic modules is communicatively coupled to the network in a standardized scalable architecture. Each of the electronic modules may be programmatically reconfigurable to implement distributed control of the locomotive. A first electronic module and a second electronic module of the plurality of electronic modules may be communicatively connected to one of the plurality of control elements via separate communication paths. The first electronic module may be configured to control the control element, and the second electronic module may be configured to control the control element when the first electronic module enters into a failure condition.

Claims

1. A consist, comprising:

a plurality of locomotives, each locomotive comprising;

a network disposed within the locomotive;

a plurality of electronic modules spatially distributed within the locomotive, each of the electronic modules communicatively coupled to the network in a standardized scalable architecture and being programmatically reconfigurable to implement distributed control of the locomotive; and

a plurality of control elements distributed within the locomotive,

wherein a first electronic module and a second electronic module of the plurality of electronic modules are communicatively connected to one of the plurality of control elements via separate communication paths,

the first electronic module is configured to control the control element,

the second electronic module is configured to control the control element when the first electronic module enters into a failure condition, and

wherein the first electronic module enters into the failure condition when a consumption of processing capacity of the first electronic module exceeds a threshold value.

15. The distributed control system of claim 1, wherein the second electronic module is configured to monitor the first electronic module to determine whether the first electronic module enters into the failure condition.

16. The distributed control system of claim 1, wherein a third electronic module of the plurality of electronic modules is configured to monitor the first electronic module to determine whether the first electronic module enters into the failure condition.

17. The distributed control system of claim 1, wherein the first electronic module enters into the failure condition when a communication between the first electronic module and the control element is failed.

18. The distributed control system of claim 1, wherein the first electronic module enters into the failure condition when the first electronic module is unable to perform a designated control function.

2. A method for controlling a locomotive, the method comprising:

monitoring, by a processor in the locomotive, a first electronic module of a plurality of electronic modules spatially distributed within the locomotive, the plurality of electronic modules being communicatively coupled to a network in a standardized scalable architecture and being programmatically reconfigurable to implement distributed control of the locomotive, the first electronic module and a second electronic module of the plurality of electronic modules being communicatively connected to one of a plurality of control elements via separate communication paths, and the first electronic module being configured to control the control element;

determining, by the processor, whether the first electronic module enters into a failure condition, wherein determining whether the first electronic module enters into a failure condition includes determining whether the consumption of processing capacity of the first electronic module exceeds a threshold value; and

when the processor determines that the first electronic module enters into the failure condition, instructing, by the processor, the second electronic module to control the control element.

3. The method of claim 2, wherein the processor is included in the second electronic module.

4. The method of claim 2, wherein the processor is included in a third electronic module of the plurality of electronic modules.

5. The method of claim 2, wherein determining whether the first electronic module enters into a failure condition includes determining whether the first electronic module is able to perform a designated control function.

6. The method of claim 2, wherein determining whether the first electronic module enters into a failure condition includes determining whether a communication between the first electronic module and the control element is failed.

7. The method of claim 2, wherein the first and second electronic modules are configured to perform the same algorithmic activity.

8. The method of claim 2, wherein each of the plurality of electronic modules includes a configurable controller, an internal circuitry of the configurable controller being reconnectable in different configurations to implement at least one of a plurality of control functions associated with distributed control of the locomotive.

9. The method of claim 8, wherein at least one of the electronic modules further includes a programmable controller in communication with each of the configurable controller and the network.

10. A distributed control system for a locomotive, comprising:

a network disposed within the locomotive;

a plurality of electronic modules spatially distributed within the locomotive, each of the electronic modules communicatively coupled to the network in a standardized scalable architecture and being programmatically reconfigurable to implement distributed control of the locomotive; and

a plurality of control elements distributed within the locomotive,

wherein a first electronic module and a second electronic module of the plurality of electronic modules are communicatively connected to one of the plurality of control elements via separate communication paths,

the first electronic module is configured to control the control element,

the second electronic module is configured to control the control element when the first electronic module enters into a failure condition, and

wherein the first electronic module enters into the failure condition when a consumption of processing capacity of the first electronic module exceeds a threshold value.

11. The distributed control system of claim 10, wherein the first and second electronic modules are configured to perform the same algorithmic activity.

12. The distributed control system of claim 10, wherein each of the plurality of electronic modules includes a configurable controller, an internal circuitry of the configurable controller being reconnectable in different configurations to implement at least one of a plurality of control functions associated with distributed control of the locomotive.

13. The distributed control system of claim 12, wherein the configurable controller is a field programmable gate array.

14. The distributed control system of claim 12, wherein at least one of the electronic modules further includes a programmable controller in communication with each of the configurable controller and the network.