Communication apparatus for real-time embedded control

• US 20060268855A1
• Filed: 05/31/2005
• Published: 11/30/2006
• Est. Priority Date: 05/31/2005
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Lyons, Mike R., Breitkreutz, Travis O., Brandt, Wayne D.
• Application Number:
  US11/139,652
• Publication Number:
  US 20060268855A1
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 2219/25032 CAN, canbus, controller area network bus
• CPC Class Codes: G05B 2219/25211 Broadcast mode, length message, command, address of originator and destination
• CPC Class Codes: G05B 2219/25221 Identification of messages and their relative priority
• CPC Class Codes: G05B 2219/2616 Earth moving, work machine
• CPC Class Codes: G05B 2219/31191 Shorten header, message can be sent with less bytes, short form PDU

Abstract

A communication apparatus is provided, which may include a node having a processor and a computer-readable medium, the node being associated with an electrical component of a real-time embedded control system configured to control one or more electronic components. The communication apparatus may further include a program stored on the computer readable medium that, when executed by the processor, is operable to identify data to be communicated, and divide the data into one or more frames. Each frame may include a frame header and a frame data payload portion. The frame data payload portion may include one or more segments, forming a sequence of segments, each segment including a segment header including segment data indicating a location of the segment in the sequence. The segment may also include a segment data payload portion.

Claims

1. A communication apparatus, comprising:

a node having a processor and a computer-readable medium, the node being associated with an electrical component of a real-time embedded control system configured to control one or more electronic components; and

a program stored on the computer readable medium that, when executed by the processor, is operable to;

identify data to be communicated; and

divide the data into one or more frames, each frame including;

a frame header; and

a frame data payload portion;

the frame data payload portion including one or more segments, forming a sequence of segments, each segment including;

a segment header including segment data indicating a location of the segment in the sequence; and

a segment data payload portion.

2. The apparatus of claim 1, wherein the segment header further includes priority data indicated in a two-bit field.

3. The apparatus of claim 1, wherein the frame header includes destination address information corresponding to one or more locations within a local network.

4. The apparatus of claim 1, wherein each segment header includes destination address information corresponding to one or more locations within a local network.

5. The apparatus of claim 1, wherein the segment data is not included in the segment data payload portion.

6. The apparatus of claim 1, wherein the segment data payload portion is an 8-byte field for transporting data.

7. The apparatus of claim 1, wherein the segment header does not include data identifier information.

8. The apparatus of claim 1, wherein the real-time embedded control system is associated with a work machine;

and

wherein the node includes a maintenance module configured to transfer data to or receive data from the one or more electrical components of the embedded control system.

9. The apparatus of claim 8, wherein the one or more electrical components includes at least one of an electronic control unit (ECU) and an engine control module (ECM).

10. A method of communicating between electrical components of a real-time embedded control system, comprising:

identifying data to be communicated; and

dividing the data into one or more frames, each frame including a frame header and a frame data payload portion;

the frame data payload portion including one or more segments, forming a sequence of segments, each segment including;

a segment header including segment data indicating a location of the segment in the sequence; and

a segment data payload portion.

11. The method of claim 10, further including updating software associated with at least one of the components by transferring data to the at least one component from a maintenance module configured to interface with the at least one component.

12. The method of claim 11, wherein the step of updating software includes transferring data from the maintenance module, configured to interface with the components, to a work machine including the components.

13. The method of claim 10, further including providing priority data in a two-bit field of the segment header, the priority data indicating a transmission priority level of the segment.

14. The method of claim 10, further including incorporating into the frame header destination address information corresponding to one or more locations within a local network.

15. The method of claim 10, further including incorporating into each segment header destination address information corresponding to one or more locations within a local network.

16. The method of claim 10, wherein dividing the data does not include incorporating segment data into the segment data payload portion.

17. The method of claim 10, wherein dividing the data does not include incorporating data identifier information into the segment header.

18. The method of claim 10, further including transferring data to one or more electrical components associated with a work machine.

19. The method of claim 18, wherein the one or more electrical components includes at least one of an electronic control unit (ECU) and an engine control module (ECM).

20. A work machine, comprising:

a frame;

a power source;

a real-time embedded control system configured to control one or more functions of the work machine, the real-time embedded control system including;

a node having a processor and a computer-readable medium, the node being associated with an electrical component of the real-time embedded control system; and

a program stored on the computer readable medium that, when executed by the processor, is operable to;

identify data to be communicated; and

divide the data into one or more frames, each frame including;

a frame header including destination address information corresponding to a location within a local network; and

a frame data payload portion including one or more segments forming a sequence of segments;

each segment including;

a segment data payload portion; and

a segment header including the destination address information, segment data indicating a location of the segment in the sequence, and priority data indicating a transmission priority level of the segment.