System and method for process control using wireless devices with multiple transceivers and at least one process element

• US 7,643,796 B2
• Filed: 04/12/2006
• Issued: 01/05/2010
• Est. Priority Date: 04/12/2006
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Webb, Christopher J., Morrison, Donald A. Jr.
• Primary Examiner(s): Corsaro; Nick
• Assistant Examiner(s): Chambers; Tangela T.
• Application Number:
  US11/402,677
• Publication Number:
  US 20070242629A1
• Time in Patent Office: 1,364 Days
• Field of Search: 370/310, 370/335, 455418-420
• US Class Current: 455/41.2
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 19/4185 characterised by the network communication
• CPC Class Codes: G05B 2219/25198 Brouter: transfers data from wireless to wired networks, router: wired to wired
• CPC Class Codes: G05B 2219/31162 Wireless lan
• CPC Class Codes: G05B 2219/31241 Remote control by a proxy or echo server, internet - intranet
• CPC Class Codes: G05B 2219/33192 Radio link, wireless
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

An apparatus includes at least one process element and a first transceiver configured to communicate with the at least one process element. The apparatus also includes a second transceiver configured to communicate wirelessly with the first transceiver and to communicate with a process control system. The process control system may transmit data to the at least one process element via the first transceiver and the second transceiver. The process control system may also receive data from the at least one process element via the first transceiver and the second transceiver.

Claims

1. An apparatus, comprising:

at least one process element configured to measure at least one process variable associated with an industrial process being controlled;

a first transceiver configured to communicate with the at least one process element; and

a second transceiver configured to communicate wirelessly with the first transceiver;

wherein the second transceiver is further configured to communicate with a process control system that is configured to control the industrial process, the process control system configurable to;

(i) indirectly infer values of the at least one process variable based on measurements of at least one other process variable; and

(ii) receive direct measurements of the at least one process variable taken by the at least one process element and provided by the second transceiver and control the industrial process using the direct measurements.

2. The apparatus of claim 1, wherein the process control system is configured to transmit data to the at least one process element via the first transceiver and the second transceiver.

3. The apparatus of claim 1, wherein the process control system is configured to receive data from the at least one process element via the first transceiver and the second transceiver.

4. The apparatus of claim 1, further comprising:

at least one second process element; and

a third transceiver configured to communicate with the at least one second process element, wherein the second transceiver is also configured to communicate wirelessly with the third transceiver.

5. The apparatus of claim 1, wherein the first transceiver is integrated into one of the at least one process element.

6. The apparatus of claim 1, wherein the at least one process element is configured to measure at least one condition of a reactor associated with a distillation tower.

7. The apparatus of claim 1, wherein the at least one process element is configured to measure at least one condition of a catalyst bed.

8. The apparatus of claim 1, wherein the second transceiver is configured to communicate with the first transceiver using one of:

an analog radio frequency signal and a digital radio frequency signal.

9. The apparatus of claim 1, wherein multiple process elements are connected to the first transceiver.

10. A process control system, comprising:

at least one process element configured to measure at least one process variable associated with an industrial process being controlled;

at least one controller configured to control the industrial process, wherein the at least one controller is configured to utilize advanced process control and optimization techniques to control the industrial process;

a first transceiver configured to communicate with the at least one process element; and

a second transceiver configured to communicate wirelessly with the first transceiver, the second transceiver further configured to communicate with the at least one controller;

wherein the at least one controller is configurable to;

(i) indirectly infer values of the at least one process variable based on measurements of at least one other process variable; and

(ii) receive direct measurements of the at least one process variable taken by the at least one process element and provided by the second transceiver and control the industrial process using the direct measurements.

11. The process control system of claim 10, wherein the at least one controller is configured to transmit data to the at least one process element via the first transceiver and the second transceiver.

12. The process control system of claim 10, wherein the at least one controller is configured to receive data from the at least one process element via the first transceiver and the second transceiver.

13. The process control system of claim 10, further comprising:

at least one second process element; and

a third transceiver configured to communicate with the at least one second process element, wherein the second transceiver is also configured to communicate wirelessly with the third transceiver.

14. The process control system of claim 10, wherein the first transceiver is integrated into one of the at least one process element.

15. The process control system of claim 10, wherein the first transceiver and the second transceiver are located such that a wired connection between them is not possible.

16. The process control system of claim 10, wherein the at least one process element is configured to measure at least one condition of a catalyst bed.

17. The process control system of claim 10, wherein the second transceiver is configured to communicate with the first transceiver using one of:

an

analog radio frequency signal and a digital radio frequency signal.

18. The process control system of claim 10, wherein multiple process elements are connected to the first transceiver.

19. A method, comprising:

identifying a process variable associated with an industrial process being controlled by a process control system, wherein values of the identified process variable are indirectly inferred based on measurements of at least one other process variable taken by the process control system;

placing at least one process element in the industrial process, the at least one process element configured to directly measure the identified process variable;

coupling the at least one process element to a first transceiver;

receiving data from the at least one process element at the first transceiver, the data comprising direct measurements of the identified process variable;

wirelessly communicating the data to a second transceiver;

communicating the data from the second transceiver to the process control system; and

controlling the industrial process at the process control system using advanced process control and optimization techniques and the direct measurements of the identified process variable.

20. The method of claim 19, further comprising:

receiving second data from the process control system at the second transceiver;

wirelessly communicating the second data to the first transceiver; and

communicating the second data from the first transceiver to the at least one process element.