Method and apparatus for configuring a bus network in an asset management system

• US 20090240853A1
• Filed: 03/21/2008
• Published: 09/24/2009
• Est. Priority Date: 03/21/2008
• Status: Abandoned Application

• Current Assignee: Rochester Institute of Technology
• Original Assignee: Rochester Institute of Technology
• Inventors: Piggott, Christopher E.
• Application Number:
  US12/077,774
• Publication Number:
  US 20090240853A1
• Time in Patent Office: Days
• US Class Current: 710/104
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices

Abstract

A method and system for managing assets includes a controller area network bus having a first end and a second end. One or more sensor systems are connected to the network bus. The sensor systems are connected to one or more assets to obtain at least one of operational data and condition data for the one or more assets. A self-healing bridge is connected to the first end and the second end of the network bus and is adapted to minimize a loss of connectivity in the network bus.

Claims

1. An asset management system, the system comprising:

a controller area network bus having a first end and a second end;

one or more sensor systems connected to said network bus;

one or more assets, said sensor systems connected to said one or more assets to obtain at least one of operational data and condition data for said one or more assets;

a self-healing bridge connected to said first end and said second end, said self-healing bridge configured to minimize a loss of connectivity in said network bus.

2. The system of claim 1, wherein said self-healing bridge further includes a microprocessor.

3. The system of claim 2, wherein said self-healing bridge has a first interface and a second interface connected to said microprocessor, said first interface and said second interface configured to transmit and receive communication packets along said network bus such that a communication packet received by said first interface is transmitted from said second interface and a communication packet received by said second interface is transmitted from said first interface.

4. The system of claim 2, wherein the microprocessor detects for a loss of connectivity in said network bus.

5. The system of claim 4, wherein the microprocessor has a first interface and a second interface, said microprocessor operable to repeat at said second interface communication packets received at said first interface if a loss of connectivity is detected.

6. The system of claim 1, wherein said self-healing bridge uses passive detection to detect for loss of connectivity in said network bus.

7. The system of claim 6, wherein said passive detection is continuous.

8. The system of claim 6, wherein said passive detection comprises continuously receiving communication packets at a plurality of interfaces connected to a microprocessor in said self-healing bridge, said loss of connectivity established when said communication packet is not received by at least one of said interfaces.

9. The system of claim 1, wherein said self-healing bridge uses active detection to detect for loss of connectivity in said network bus.

10. The system of claim 9, wherein said active detection is continuous.

11. The system of claim 9, wherein said self-healing bridge includes a microprocessor, said active detection comprising transmitting a periodic signal out of an interface connected to said microprocessor, said signal moving through said network bus, and if there is no loss of connectivity in said network bus, said signal is received at another interface connected to said microprocessor.

12. The system of claim 1, further including a display configured to display that a loss of connectivity occurred in said network bus.

13. A method for minimizing a loss of connectivity in a controller bus area network bus for an asset management system, the method comprising:

connecting a self-healing bridge to a first end and a second end of said network bus, said self-healing bridge having a plurality of interfaces;

transmitting communication packets along said network bus;

monitoring one or more of said plurality of interfaces for said communication packets; and

if said communication packets are not received at said monitored plurality of interfaces, repeating said transmission of said communication packets received by one of said interfaces at another one of said interfaces.

14. The method of claim 13, wherein said monitoring of said one or more plurality of interfaces is continuous.

15. The method of claim 13, wherein said monitoring of said one or more plurality of interfaces is active.

16. The method of claim 15, wherein said active monitoring comprises transmitting a periodic monitoring signal out of one of the plurality of interfaces, said signal moving through said network bus, and if there is no loss of connectivity in said network bus said signal is received at another monitored interface.

17. A system for minimizing a loss of connective in an asset management system, the system comprising:

a plurality of sensor systems connected to a plurality of controller area network buses, each network bus having a first end and a second end;

a plurality of assets having said one or more of said plurality of sensors system connected thereto, said sensor system configured to obtain at least one of operational data and condition data for said plurality of assets;

a self-healing bridge connected to said first end and said second end of each network bus, each self-healing bridge configured to minimize a loss of connectivity in said network buses.

18. The system of claim 17, wherein at least one of the self-healing bridges includes a microprocessor having a first interface and a second interface connected thereto for detecting a loss of connectivity in said network bus.

19. The system of claim 18, wherein if a loss of connectivity is detected, said microprocessor is operable to repeat at said second interface communication packets received at said first interface.

20. The system of claim 17, wherein at least one of said self-healing bridges uses passive detection to detect for loss of connectivity in said network bus.

21. The system of claim 20, wherein said passive detection is continuous.

22. The system of claim 17, wherein at least one of said self-healing bridges uses active detection to detect for loss of connectivity in said network bus.

23. The system of claim 22, wherein said active detection is continuous.

24. The system of claim 17, further including a display configured to display that a loss of connectivity occurred in at least one of said network buses.