Source: http://www.google.com/patents/US7627441?dq=5191154
Timestamp: 2017-06-27 12:24:18
Document Index: 76014326

Matched Legal Cases: ['art 2', 'art 3', 'art 3', 'art 2', 'art 2', 'art 4', 'art 4']

Patent US7627441 - Process device with vibration based diagnostics - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn process device for use in an industrial process control or monitoring system is configured to couple to a process. A vibration sensor is configured to sense vibrations. Diagnostic circuitry provides a diagnostic output based upon the sensed vibrations....http://www.google.com/patents/US7627441?utm_source=gb-gplus-sharePatent US7627441 - Process device with vibration based diagnosticsAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7627441 B2Publication typeGrantApplication numberUS 10/675,014Publication dateDec 1, 2009Filing dateSep 30, 2003Priority dateSep 30, 2003Fee statusPaidAlso published asCN1856752A, CN100487616C, EP1668328A2, US20050072239, WO2005033639A2, WO2005033639A3Publication number10675014, 675014, US 7627441 B2, US 7627441B2, US-B2-7627441, US7627441 B2, US7627441B2InventorsRandy J. Longsdorf, Chad C. BlumeyerOriginal AssigneeRosemount Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (105), Non-Patent Citations (99), Referenced by (22), Classifications (9), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetProcess device with vibration based diagnostics
US 7627441 B2Abstract
1. An apparatus for use in an industrial process control or monitoring system, comprising:
a process device for coupling to an industrial process which includes a process transmitter or controller to monitor or control the industrial process and communicate;
a process coupling configured to couple the process device to a process which includes piping carrying a process fluid, the process coupling configured to receive vibrations from the process;
a vibration sensor configured to receive vibrations from the process which are transferred from the process through the process coupling and to sense vibrations and provide a sensed vibration signal; and
diagnostic circuitry located in the process device configured to receive the sensed vibration signal and responsively provide a diagnostic output related to a process disturbance or operation of a process component;
wherein the process device includes a process variable sensor separate from the vibration sensor configured to sense a process variable; and
wherein the diagnostic output is based upon a comparison of an accumulation of the sensed vibrations over at least a partial lifetime of use of the vibration sensor to a threshold.
2. The apparatus of claim 1 wherein the process device includes a control element separate from the vibration sensor configured to control operation of the process.
3. The apparatus of claim 1 wherein the process device includes an input configured to receive a process signal.
4. The apparatus of claim 1 wherein the process device includes output circuitry including communication circuitry configured to couple to a two-wire process control loop.
5. The apparatus of claim 1 wherein the vibrations are carried through process components.
6. The apparatus of claim 1 wherein the vibration sensor comprises an accelerometer.
7. The apparatus of claim 1 wherein the vibration sensor is configured to sense vibrations along one axis.
8. The apparatus of claim 1 wherein the vibration sensor is configured to sense vibrations along more than one axis.
9. The apparatus of claim 1 wherein the output from the diagnostic circuitry is transmitted on a process control loop.
10. The apparatus of claim 1 wherein the diagnostic output is related to failure of a process component.
11. The apparatus of claim 1 wherein the diagnostic output is related to degradation in performance of a process component.
12. The apparatus of claim 1 wherein the diagnostic output is related to an impending failure of a process component.
13. The apparatus of claim 1 wherein the diagnostic output is based upon a comparison of sensed vibrations to a base line level.
14. The apparatus of claim 13 wherein the base line level is determined based upon history of the process.
15. The apparatus of claim 1 wherein the diagnostic output is based upon trends in the sensed vibrations.
16. The apparatus of claim 1 wherein the diagnostic output is used to adjust a control algorithm.
17. The apparatus of claim 1 wherein the diagnostic output is used to compensate a process variable measurement.
18. The apparatus of claim 1 wherein the diagnostic output is based upon a frequency spectrum of the sensed vibrations.
19. The apparatus of claim 1 wherein the diagnostic output is based upon rules.
20. The apparatus of claim 1 wherein the diagnostic circuitry implements a neural network.
21. The apparatus of claim 1 wherein the diagnostic circuitry implements fuzzy logic.
22. The apparatus of claim 1 wherein the diagnostic output is based upon sensed spikes in the vibration signal.
23. The apparatus of claim 1 wherein the diagnostic output is based upon a rolling average of the vibration signal.
24. The apparatus of claim 1 wherein the vibration sensor is selected from a group of vibration sensors including of capacitive, electrodynamic, piezoelectric and Micro-Electro-Mechanical Systems (MEMS).
25. The apparatus of claim 1 wherein the diagnostic output is correlated with process operation.
26. The apparatus of claim 1 including a plurality of process devices configured to sense vibrations.
27. The apparatus of claim 1 wherein the process device is completely powered from a process control loop.
28. The apparatus of claim 1 wherein the process device is configured to couple to a process control loop selected from the group of process control loops consisting of two, three and four wire process control loops.
29. The apparatus of claim 1 wherein the vibration sensor senses vibration in the process received through a mounting arrangement.
30. The apparatus of claim 1 wherein the vibration sensor senses vibration in the process received through a wiring system.
31. A method of monitoring operation of an industrial process control system, comprising:
physically coupling a process device using a process coupling to an industrial process which carries a process fluid in process piping and which includes process transmitters or controllers to monitor or control the industrial process which communicate;
receiving vibrations from the process through the process coupling;
sensing process vibrations with a vibration sensor in the process device, the vibrations received through the physical coupling and transferred from the process through the process coupling and to the vibration sensor;
diagnosing operation of a process component or a process disturbance based upon the sensed vibrations;
sensing a process variable with a process variable sensor in the process device which is separate from the vibration sensor; and
wherein the diagnostic operation is based upon a comparison of an accumulation of sensed vibrations over at least a partial lifetime of use of the vibration sensor to a threshold.
32. The method of claim 31 including controlling operation of the process with a control element which is separate from the vibration sensor.
33. The method of claim 31 including outputting diagnostic data on a two-wire process control loop.
34. The method of claim 31 wherein the process vibrations are carried through process components.
35. The method of claim 31 wherein sensing vibrations comprises sensing vibrations along one axis.
36. The method of claim 31 wherein sensing vibrations comprises sensing vibrations along more than one axis.
37. The method of claim 31 wherein the diagnosing is related to failure of a process component.
38. The method of claim 31 wherein the diagnosing is related to an impending failure of a process component.
39. The method of claim 31 wherein the diagnosing is based upon a comparing of sensed vibrations to a base line level.
40. The method of claim 39 wherein the base line level is determined based upon history of the process.
41. The method of claim 31 wherein the diagnosing is based upon trends in the sensed vibrations.
42. The method of claim 31 including adjusting a control algorithm based upon the diagnosing operation.
43. The method of claim 31 including compensating a process variable measurement based upon the diagnosing.
44. The method of claim 31 wherein the diagnosing is based upon a frequency spectrum of the sensed vibrations.
45. The method of claim 31 wherein the diagnosing is based upon rules.
46. The method of claim 31 wherein the diagnosing is implemented in a neural network.
47. The method of claim 31 wherein the diagnosing is implemented in fuzzy logic.
48. The method of claim 31 wherein the diagnosing operation is based upon sensed spikes in the sensed vibrations.
49. The method of claim 31 wherein the diagnosing operation is based upon a rolling average of the sensed vibrations.
50. The method of claim 31 including correlating the diagnosing with process operation.
As discussed above, FIG. 1 is a diagram showing an example of a process control system 10 which includes process piping 16 which carries a process fluid and two wire process control loop 18 carrying loop current I. A transmitter 12, controller 22, which couples to a final control element in the loop such as an actuator, valve, a pump, motor or solenoid, communicator 26, and control room 20 are all part of process control loop 18. It is understood that loop 18 is shown in one configuration and any appropriate process control loop may be used such as a 4–20 mA loop, 2, 3 or 4 wire loop, multi-drop loop and a loop operating in accordance with the HART®, Fieldbus or other digital or analog communication protocol. In operation, transmitter 12 senses a process variable such as flow using sensor 21 and transmits the sensed process variable over loop 18. The process variable may be received by controller/valve actuator 22, communicator 26 and/or control room equipment 20. Controller 22 is shown coupled to valve 24 and is capable of controlling the process by adjusting valve 24 thereby changing the flow in pipe 16. Controller 22 receives a control input over loop 18 from, for example, control room 20, transmitter 12 or communicator 26 and responsively adjusts valve 24. In another embodiment, controller 22 internally generates the control signal based upon process signals received over loop 18. Communicator 26 may be the portable communicator shown in FIG. 1 or may be a permanently mounted process unit which monitors the process and performs computations. Process devices include, for example, transmitter 12 (such as a 3051S transmitter available from Rosemount Inc. of Chanhassen, Minn.), controller 22, communicator 26 and control room 20 shown in FIG. 1. A diagnostic unit 27 is also illustrated in FIG. 1 and can include a sensor, such as the vibration sensors discussed herein, which is not separately used to sense a process variable. Another type of process device is a PC, programmable logic unit (PLC) or other computer coupled to the loop using appropriate I/O circuitry to allow monitoring, managing, and/or transmitting on the loop.
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In Trust For The Owners Of The Syncrude ProjectMethod for diagnosing faults in slurry pump impellersUS20150293503 *Mar 18, 2015Oct 15, 2015Rolls-Royce PlcMethod and system for managing the health of a machine* Cited by examinerClassifications U.S. Classification702/56, 702/183, 73/861.355, 700/280International ClassificationG01F1/84, G05B23/02, G05B13/00Cooperative ClassificationG05B23/027European ClassificationG05B23/02S6F2Legal EventsDateCodeEventDescriptionNov 1, 2004ASAssignmentOwner name: ROSEMOUNT INC., MINNESOTAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LONGSDORF, RANDY J.;BLUMEYER, CHAD C.;REEL/FRAME:015943/0759Effective date: 20041019May 29, 2012CCCertificate of correctionMar 8, 2013FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services