Self-configuring communication networks for use with process control systems

• US 7,460,865 B2
• Filed: 06/18/2003
• Issued: 12/02/2008
• Est. Priority Date: 06/18/2003
• Status: Expired due to Fees

• Current Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Original Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Inventors: Nixon, Mark, Aneweer, Tom, Eddie, Ron, Burr, Kent
• Primary Examiner(s): Tran; CongVan
• Application Number:
  US10/464,087
• Publication Number:
  US 20040259533A1
• Time in Patent Office: 1,994 Days
• Field of Search: 455/450, 455/436, 455/514, 455/525, 455/428, 455/422.1, 455/424, 455/423, 455/67.11, 455/426.2, 455/414.1, 455/414.3, 370/254, 370/328, 370/401
• US Class Current: 455/428
• CPC Class Codes: G05B 2219/21079 Allocate at start up also to each controlled device a code for the master
• CPC Class Codes: G05B 2219/25061 Configuration stored in central database
• CPC Class Codes: G05B 2219/25101 Detect connected module, load corresponding parameters, variables into module
• CPC Class Codes: G05B 2219/31121 Fielddevice, field controller, interface connected to fieldbus
• CPC Class Codes: G05B 2219/31123 Multi mode network controller, monitor, control, configuration, maintenance
• CPC Class Codes: G05B 2219/31151 Lan local area network
• CPC Class Codes: G05B 2219/33192 Radio link, wireless
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/20 Transfer of user or subscriber data
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y02P 90/80 Management or planning

Abstract

Disclosed herein are methods, apparatus and articles of manufacture for configuring a communication network associated with a plurality of wireless enabled field devices. A disclosed example method of establishing a communication network for use in a process control system having a controller and a plurality of wireless enabled field devices involves identifying a plurality of wireless communication links available for routing communications between the wirless enabled field devices and the controller. Each of the wireless enabled field devices is at least one of a sensor or an actuator. The example method also involves automatically assigning at least first and second ones of the plurality of wireless communication links to a first one of the wireless enabled field devices based on at least one predetermined signal criterion. The first wireless communication link wirelessly communicatively couples the first wireless enabled field device to a second wireless device. In addition, the second wireless communication link wirelessly communicatively couples the second wireless device to the controller.

Claims

1. A method of establishing a communication network for use in a process control system having a controller and a plurality of wireless enabled field devices, the method comprising:

identifying a plurality of wireless communication links available for routing communications between the wireless enabled field devices and the controller, wherein each of the wireless enabled field devices is at least one of a sensor or an actuator; and

automatically assigning at least first and second ones of the plurality of wireless communication links to a first one of the wireless enabled field devices based on at least one predetermined signal criterion, wherein the first wireless communication link wirelessly communicatively couples the first wireless enabled field device to a second wireless device, and wherein the second wireless communication link wirelessly communicatively couples the second wireless device to the controller.

2. A method as defined in claim 1, wherein identifying the plurality of wireless communication links includes identifying communication links available between each of the plurality of field devices and at least one of another one of the plurality of field devices, a wireless input/output interface or a wireless field device interface.

3. A method as defined in claim 1, wherein identifying the plurality of wireless communication links includes identifying at least two communication links available for routing communications from at least one of the wireless enabled field devices to the controller.

4. A method as defined in claim 1, wherein automatically assigning the first and second wireless communication links to the first wireless enabled field device based on the predetermined signal criterion includes assigning the first and second wireless communication links to the first wireless enabled field device to maximize communications quality.

5. A method as defined in claim 4, wherein the predetermined signal criterion includes one of signal strength or noise level.

6. A method as defined in claim 1, wherein automatically assigning the first and second wireless communication links to the first wireless enabled field device includes automatically reassigning the first and second wireless communication links to the first wireless enabled field device.

7. A method as defined in claim 1, wherein the second wireless device is a second one of the wireless enabled field devices.

8. A method as defined in claim 6, wherein automatically reassigning the first and second wireless communication links includes reassigning the first and second communication links in response to a communication problem associated with the first wireless enabled field device.

9. A system for establishing a communication network for use in a process control system having a controller and a plurality of wireless enabled field devices, the system comprising:

a memory;

a processor coupled to the memory and programmed to;

identify a plurality of wireless communication links available for routing communications between the wireless enabled field devices and the controller, wherein each of the wireless enabled field devices is at least one of a sensor or an actuator; and

assign at least first and second ones of the plurality of wireless communication links to a first one of the wireless enabled field devices based on at least one predetermined signal criterion, wherein the first wireless communication link wirelessly communicatively couples the first wireless enabled field device to a second wireless device, and wherein the second wireless communication link wirelessly communicatively couples the second wireless device to the controller.

10. A system as defined in claim 9, wherein the processor is programmed to identify the plurality of wireless communication links by identifying communication links available between each of the plurality of field devices and at least one of another one of the plurality of field devices, a wireless input/output interface or a wireless field device interface.

11. A system as defined in claim 9, wherein the processor is programmed to identify the plurality of wireless communication links by identifying at least two communication links available for routing communications from at least one of the wireless enabled field devices to the controller.

12. A system as defined in claim 9, wherein the processor is programmed to assign the first and second wireless communication links to the first wireless enabled field device based on the predetermined signal criterion by assigning the first and second wireless communication links to the first wireless enabled field devices to maximize communications quality.

13. A system as defined in claim 12, wherein the predetermined signal criterion includes one of signal strength or noise level.

14. A system as defined in claim 9, wherein the processor is programmed to assign the first and second wireless communication links to the first wireless enabled field device by reassigning the first and second wireless communication links to the first wireless enabled field device.

15. A system as defined in claim 9, wherein the second wireless device is a second one of the wireless enabled field devices.

16. A system as defined in claim 14, wherein the processor is programmed to reassign the first and second wireless communication links by reassigning the first and second wireless communication links in response to a communication problem associated with the first wireless enabled field device.

17. A computer readable medium having computer executable instructions stored thereon that, when executed, cause a computer to:

identify a plurality of wireless communication links available for routing communications between a plurality of wireless enabled field devices and a controller, wherein each of the wireless enabled field devices is at least one of a sensor or an actuator; and

assign at least first and second ones of a plurality of the wireless communication links to at least a first one of the wireless enabled field devices based on at least one predetermined signal criterion, wherein the first wireless communication link wirelessly communicatively couples the first wireless enabled field device to a second wireless device, and wherein the second wireless communication link wirelessly communicatively couples the second wireless device to the controller.

18. A computer readable medium as defined in claim 17 having computer executable instructions stored thereon that, when executed, cause the computer to identify the plurality of wireless communication links by identifying communication links available between each of the plurality of field devices and at least one of another one of the plurality of field devices, a wireless input/output interface or a wireless field device interface.

19. A computer readable medium as defined in claim 17 having computer executable instructions stored thereon that, when executed, cause the computer to identify the plurality of wireless communication links by identifying at least two communication links available for routing communications from at least one of the wireless enabled field devices to the controller.

20. A computer readable medium as defined in claim 17 having computer executable instructions stored thereon that, when executed, cause the computer to assign the first and second wireless communication links to the first wireless enabled field device based on the predetermined signal criterion by assigning the first and second wireless communication links to the first wireless enabled field device to maximize communications quality.

21. A computer readable medium as defined in claim 17 having computer executable instructions stored thereon that, when executed, cause the computer to assign the first and second wireless communication links to the first wireless enabled field device by reassigning the first and second wireless communication links to the first wireless enabled device.

22. A computer readable medium as defined in claim 17, wherein the second wireless device is a second one of the plurality of wireless enabled field devices.

23. A computer readable medium as defined in claim 21 having computer executable instructions stored thereon that, when executed, cause the computer to reassign the first and second wireless communication links by reassigning the first and second wireless communication links in response to a communication problem associated with the first wireless enabled field device.

24. A wireless interface for use with a field device, comprising:

a wireless transceiver;

a memory; and

a processor coupled to the memory and programmed to;

identify wireless communication links available to the field device;

select at least first and second ones of the available wireless communication links based on at least one predetermined signal characteristic;

wirelessly exchange at least one of sensor measurement information or actuator control information with the field device via the first wireless communication link; and

wirelessly exchange the at least one of the sensor measurement information or the actuator information with a controller via the second wireless communication link.

25. A wireless interface as defined in claim 24, further including a physical connection configured to receive at least one signal from another field device.

26. A wireless interface as defined in claim 25, wherein the physical connection includes a screw terminal.

27. A wireless interface as defined in claim 24, further including circuitry configured to process analog information associated with the field device.

28. A wireless interface as defined in claim 24, further including circuitry configured to process digital information associated with the field device.

29. A wireless interface as defined in claim 28, wherein the digital information includes HART compliant information.

30. A wireless interface as defined in claim 24, wherein the wireless interface is configured to be integral with another field device.

31. A wireless interface as defined in claim 24, wherein the predetermined signal characteristic is one of signal strength or noise level.

32. A wireless interface as defined in claim 24, wherein the processor is programmed to request commissioning information for use by the field device.

33. A wireless interface as defined in claim 32, wherein the processor is programmed to receive the commissioning information and to commission the field device with the received commissioning information.

34. A wireless interface as defined in claim 24, wherein the processor is programmed to convey at least one of process control parameters, diagnostic information, alarm information, alert information or field device identification information associated with the field device via the first wireless communication link.