System, method, and computer program product for generating a drive signal in a vibrating measuring device

• US 9,354,097 B2
• Filed: 07/01/2008
• Issued: 05/31/2016
• Est. Priority Date: 07/01/2008
• Status: Active Grant

• Current Assignee: Micro Motion Incorporated (Emerson Electric Company)
• Original Assignee: Micro Motion Incorporated (Emerson Electric Company)
• Inventors: McAnally, Craig B.
• Primary Examiner(s): Toatley, Gregory J
• Assistant Examiner(s): SUAREZ, FELIX E
• Application Number:
  US12/996,926
• Publication Number:
  US 20110098945A1
• Time in Patent Office: 2,891 Days
• Field of Search: 702/45, 702/48, 702/50, 702/54, 702/56, 738/618.7
• US Class Current: 1/1
• CPC Class Codes: G01F 1/8436 signal processing
• CPC Class Codes: G01N 9/32 by using flow properties of fluids, e.g. flow through tubes or apertures

Abstract

The present invention relates to a system, method, and computer program product for generating a drive signal for a vibrating measuring device (5). A drive chain (C₁, C₂, C₃, C_N) is selected from at least two drive chains (C₁, C₂, C₃, C_N). Each drive chain (C₁, C₂, C₃, C_N) modifies at least one pick-off signal to generate the drive signal. Each drive chain (C₁, C₂, C₃, C_N) generates a different mode of vibration in the at least one conduit (103A). The drive signal generated by the selected drive chain (C₁, C₂, C₃, C_N) is provided to a drive (104) of the vibrating measuring device (5).

Claims

1. A system for generating a drive signal in a vibrating measuring device (5), comprising:

at least one conduit (103A) configured to receive a flowing substance;

at least one drive (104) that vibrates the at least one conduit (103A);

at least one pick-off (105) that measures motion of the at least one conduit (103A); and

one or more electronics (20) configured to receive at least one pick-off signal from the at least one pick-off (105), with the one or more electronics (20) including at least two available drive chains (C₁, C₂, C₃, C_N), wherein

each drive chain of the at least two available drive chains (C₁, C₂, C₃, C_N) modifies a pick-off signal to generate a drive signal including a different frequency and a different mode of vibration in the at least one conduit (103A);

with the one or more electronics (20) being configured to select a drive chain from the at least two available drive chains (C₁, C₂, C₃, C_N), process the at least one pick-off signal with the selected drive chain to generate a drive signal, and provide the drive signal to the at least one drive (104).

2. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein each drive chain (C₁, C₂, C₃, C_N) modifies at least one pick-off signal in a manner that reinforces a particular drive frequency and suppresses other drive frequencies.

3. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein each drive chain (C₁, C₂, C₃, C_N) includes a filter that filters out undesired modes of vibration.

4. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein each drive chain (C₁, C₂, C₃, C_N) includes a phase shift algorithm (P₁, P₂, P₃, P_N).

5. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein each drive chain (C₁, C₂, C₃, C_N) includes a gain adjusting algorithm (G₁, G₂, G₃, G_N).

6. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein a user or program selects the drive chain (C₁, C₂, C₃, C_N).

7. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to whether entrained gas is present in the flowing substance.

8. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to the noise of the pick-off signals.

9. The system for generating a drive signal in a vibrating measuring device (5) according to claim 1, wherein the drive chain (C₁, C₂, C₃, C_N) is selected by accessing a look up table that correlates a variety of conditions to particular drive chains (C₁, C₂, C₃, C_N).

10. A method for generating a drive signal for a vibrating measuring device (5), including at least one conduit (103A) configured to receive a flowing substance, at least one drive (104) that vibrates the at least one conduit (103A), at least one pick-off (105) that measures motion of the at least one conduit (103A), the method comprising the steps of:

providing one or more electronics (20) configured to receive at least one pick-off signal from the at least one pick-off (105), with the one or more electronics (20) including at least two available drive chains (C₁, C₂, C₃, C_N), wherein

each drive chain of the at least two available drive chains (C₁, C₂, C₃, C_N) modifies a pick-off signal to generate a drive signal including a different frequency and a different mode of vibration in the at least one conduit (103A);

with the one or more electronics (20) being configured to select a drive chain from the at least two available drive chains (C₁, C₂, C₃, C_N), process the at least one pick-off signal with the selected drive chain to generate a drive signal, and provide the drive signal to the at least one drive (104).

11. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein each drive chain (C₁, C₂, C₃, C_N) modifies at least one pick-off signal in a manner that reinforces a particular drive frequency and suppresses other drive frequencies.

12. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein each drive chain (C₁, C₂, C₃, C_N) includes a filter that filters out undesired modes of vibration.

13. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein each drive chain (C₁, C₂, C₃, C_N) includes a phase shift algorithm (P₁, P₂, P₃, P_N).

14. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein each drive chain (C₁, C₂, C₃, C_N) includes a gain adjusting algorithm (G₁, G₂, G₃, G_N).

15. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein a user or program selects the drive chain (C₁, C₂, C₃, C_N).

16. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to whether entrained gas is present in the flowing substance.

17. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to the noise of the pick-off signals.

18. The method for generating a drive signal in a vibrating measuring device (5) according to claim 10, wherein the drive chain (C₁, C₂, C₃, C_N) is selected by accessing a look up table that correlates a variety of conditions to particular drive chains (C₁, C₂, C₃, C_N).

19. A non-transitory computer readable medium containing computer instructions stored therein for executing a process for generating a drive signal for a vibrating measuring device (5), the process comprising the steps of:

receiving at least one pick-off signal from at least one pick-off (105);

selecting a drive chain (C₁, C₂, C₃, C_N) from at least two available drive chains (C₁, C₂, C₃, C_N), wherein

each drive chain of the at least two available drive chains (C₁, C₂, C₃, C_N) modifies a pick-off signal to generate a drive signal including a different frequency and a different mode of vibration in the at least one conduit (103A);

processing the at least one pick-off signal with the selected drive chain to generate a drive signal; and

providing the drive signal to at least one drive (104).

20. The non-transitory computer readable medium according to claim 19, wherein each drive chain (C₁, C₂, C₃, C_N) modifies at least one pick-off signal in a manner that reinforces a particular drive frequency and suppresses other drive frequencies.

21. The non-transitory computer readable medium according to claim 19, wherein each drive chain (C₁, C₂, C₃, C_N) includes a filter that filters out undesired modes of vibration.

22. The non-transitory computer readable medium according to claim 19, wherein each drive chain (C₁, C₂, C₃, C_N) includes a phase shift algorithm (P₁, P₂, P₃, P_N).

23. The non-transitory computer readable medium according to claim 19, wherein each drive chain (C₁, C₂, C₃, C_N) includes a gain adjusting algorithm (G₁, G₂, G₃, G_N).

24. The non-transitory computer readable medium according to claim 19, wherein a user or program selects the drive chain (C₁, C₂, C₃, C_N).

25. The non-transitory computer readable medium according to claim 19, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to whether entrained gas is present in the flowing substance.

26. The non-transitory computer readable medium according to claim 19, wherein the drive chain (C₁, C₂, C₃, C_N) is selected according to the noise of the pick-off signals.

27. The non-transitory computer readable medium according to claim 19, wherein the drive chain (C₁, C₂, C₃, C_N) is selected by accessing a look up table that correlates a variety of conditions to particular drive chains (C₁, C₂, C₃, C_N).