Wireless vibration monitoring of movable engine parts

• US 10,378,994 B2
• Filed: 03/05/2015
• Issued: 08/13/2019
• Est. Priority Date: 03/05/2015
• Status: Active Grant

• Current Assignee: Ai Alpine Us Bidco LLC
• Original Assignee: Ai Alpine Us Bidco LLC
• Inventors: Raman, Venkatesh, Nandigama, Pavan Chakravarthy
• Primary Examiner(s): Seo, Justin
• Assistant Examiner(s): Singer, David L
• Application Number:
  US14/639,704
• Publication Number:
  US 20160258836A1
• Time in Patent Office: 1,622 Days
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 15/14 Testing gas-turbine engines or jet-propulsion engines
• CPC Class Codes: G01M 5/0066 by exciting or detecting vibration or acceleration vibration testing of structures G01M7/00
• CPC Class Codes: G01N 2291/269 Various geometry objects
• CPC Class Codes: G01N 29/04 Analysing solids using acoustic emission techniques G01N29/14
• CPC Class Codes: G01N 29/2437 Piezoelectric probes
• CPC Class Codes: G01N 29/44 Processing the detected response signal , e.g. electronic circuits specially adapted therefor digital signal processing per se G06F17/00

Abstract

Condition based engine parts (e.g., movable engine parts) monitoring is disclosed. The techniques may enable detecting cracks present in engine parts while the engine is operational. In one embodiment, a system includes a wireless sensor configured to be disposed on a movable part internal to a machine and communicate wirelessly and a controller that includes a processor. The processor may be configured to initiate communication with the wireless sensor by receiving a wireless signal indicative of a frequency of vibration of the internal movable part from the wireless sensor, to obtain an acceptable threshold range of vibrations for the internal movable part from one or more data sources, to determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the internal movable part, and to initiate preventative actions when the frequency is not within the acceptable threshold range.

Claims

1. A system, comprising:

a wireless sensor disposed in a recess of a shank of a connecting rod internal to a reciprocating internal combustion engine and to communicate wirelessly; and

a controller comprising a processor configured to;

initiate communication with the wireless sensor by receiving a wireless signal indicative of a frequency of vibration of the connecting rod from the wireless sensor;

obtain an acceptable threshold range of vibrations for the connecting rod from one or more data sources;

determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the connecting rod; and

initiate preventative actions when the frequency is not within the acceptable threshold range, wherein the preventative actions comprise stopping operation of the reciprocating internal combustion engine.

2. The system of claim 1, wherein the processor is configured to wait for another wireless signal using a network interface, before initiating preventative actions, when the frequency is within the acceptable threshold range.

3. The system of claim 1, wherein the processor is configured to send an alert to display on a user interface screen of a control system, send the alert to a local or remote workstation to display, or some combination thereof, as the one or more preventative actions.

4. The system of claim 1, wherein the processor is configured to initiate communication with the wireless sensor by receiving a second wireless signal indicative of a second frequency of vibration of the connecting rod from the wireless sensor when the frequency is not within the acceptable threshold range prior to initiating preventative actions, determine whether the second frequency of vibration is within the acceptable threshold range of vibrations for the connecting rod, and to initiate preventative actions when the second frequency is not within the acceptable threshold range.

5. The system of claim 1, wherein the processor is configured to:

initiate communication with the wireless sensor by receiving a wireless signal indicative of one or more angular velocity, acceleration, displacement, or some combination thereof, of the connecting rod from the wireless sensor;

obtain an acceptable threshold range of angular velocity, acceleration, displacement, or some combination thereof, for the connecting rod from one or more data sources;

determine whether the angular velocity, the acceleration, the displacement, or some combination thereof, is within the acceptable threshold range for the connecting rod; and

initiate preventative actions when the angular velocity, the acceleration, the displacement, or some combination thereof, is not within the acceptable threshold range.

6. The system of claim 1, wherein the processor is configured to generate an indication that the connecting rod has cracked when the frequency of vibration exceeds the acceptable threshold range of vibration.

7. The system of claim 1, wherein the acceptable threshold range of vibrations for the connecting rod is based at least in part on a natural frequency of the connecting rod.

8. The system of claim 1, comprising an additional wireless sensor configured to be disposed on a piston internal to the reciprocating internal combustion engine and to output an additional wireless signal to the controller indicative of a frequency of vibration of the piston.

9. A system, comprising:

a reciprocating combustion engine;

a wireless sensor disposed in a recess of a shank of a connecting rod internal to the reciprocating combustion engine and to communicate wirelessly; and

a controller comprising a processor configured to;

initiate communication with the wireless sensor disposed in the recess of the shank of the connecting rod internal to the reciprocating combustion engine by receiving a wireless signal indicative of a frequency of vibration of the connecting rod;

obtain an acceptable threshold range of vibrations for the connecting rod from one or more data sources;

determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the connecting rod; and

initiate preventative actions when the frequency is not within the acceptable threshold range, wherein the preventative actions comprise stopping operation of the reciprocating combustion engine.

10. The system of claim 9, wherein the processor is configured to initiate waiting for another wireless signal using a network interface when the frequency is within the acceptable threshold range.

11. The system of claim 9, wherein the processor is configured to set a baseline value of the frequency of vibration when the wireless signal is initially received and to determine whether a phase of the frequency of vibration deviates from a phase of the baseline value for subsequently received wireless signals.

12. The system of claim 9, wherein obtaining the acceptable threshold range comprises accessing pre-stored test data, a design specification, or some combination thereof, related to the connecting rod.

13. The system of claim 9, comprising an additional wireless sensor configured to be disposed on a piston internal to the reciprocating internal combustion engine and to output an additional wireless signal to the controller indicative of a frequency of vibration of the piston.

14. A system, comprising:

a wireless sensor disposed in a recess of a shank of a connecting rod internal to a reciprocating combustion engine and to communicate wirelessly; and

a controller configured to execute computer instructions, comprising a processor, configured to;

initiate communication with the wireless sensor disposed in the recess of the shank of the connecting rod internal to the reciprocating combustion engine by receiving a wireless signal from the wireless sensor, the wireless signal indicative of a frequency of vibration of the connecting rod;

obtain an acceptable threshold range of vibrations for the connecting rod from one or more data sources;

determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the connecting rod; and

initiate preventative actions when the frequency is not within the acceptable threshold range, wherein the preventative actions comprise controlling operation of the reciprocating combustion engine.

15. The system of claim 14, wherein initiating the one or more preventative actions comprises initiating sending of an alert to display on a user interface screen of a monitoring system, initiating sending of the alert to a workstation to display, or some combination thereof.

16. The system of claim 14, wherein obtaining the acceptable threshold range comprises obtaining the acceptable threshold range from local or remote data sources as the one or more data sources.

17. The system of claim 14, wherein obtaining the acceptable threshold range comprises retrieving pre-stored test data, a design specification, or some combination thereof, related to the connecting rod.

18. The system of claim 14, wherein the instructions are configured to determine that the connecting rod is cracked when frequencies of vibration exceed the acceptable threshold range of vibrations.

19. The system of claim 14, comprising an additional wireless sensor configured to be disposed on a piston internal to the reciprocating internal combustion engine and to output an additional wireless signal to the controller indicative of a frequency of vibration of the piston.

20. A system, comprising:

a reciprocal combustion engine;

a wireless sensor disposed in a recess of a shank of a connecting rod internal to the reciprocating combustion engine, said wireless sensor configured to communicate wirelessly; and

a controller comprising a processor configured to;

initiate communication with the wireless sensor disposed in the recess of the shank of the connecting rod internal to the reciprocating combustion engine by receiving a wireless signal from the wireless sensor, the wireless signal indicative of a frequency of vibration of the connecting rod;

obtain an acceptable threshold range of vibrations for the connecting rod from one or more data sources;

determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the connecting rod; and

initiate preventative actions when the frequency is not within the acceptable threshold range, wherein the preventative actions comprise controlling operation of the reciprocating combustion engine.

21. The system of claim 20, wherein the processor is configured to wait for another wireless signal using a network interface, before initiating preventative actions, when the frequency is within the acceptable threshold range.

22. The system of claim 20, wherein the processor is configured to send an alert to display on a user interface screen of a control system, send the alert to a local or remote workstation to display, or some combination thereof, as the one or more preventative actions.

23. The system of claim 20, wherein the processor is configured to initiate communication with the wireless sensor by receiving a second wireless signal.

24. The system of claim 20, wherein the processor is configured to:

initiate communication with the wireless sensor by receiving a wireless signal indicative of one or more angular velocity, acceleration, displacement, or some combination thereof, of the connecting rod from the wireless sensor;

obtain an acceptable threshold range of angular velocity, acceleration, displacement, or some combination thereof, for the connecting rod from one or more data sources;

determine whether the angular velocity, the acceleration, the displacement, or some combination thereof, is within the acceptable threshold range for the connecting rod; and

initiate preventative actions when the angular velocity, the acceleration, the displacement, or some combination thereof, is not within the acceptable threshold range.

25. The system of claim 20, wherein the processor is configured to generate an indication that the connecting rod has cracked when the frequency of vibration exceeds the acceptable threshold range of vibration.

26. The system of claim 20, wherein the processor is configured to initiate waiting for another wireless signal using a network interface when the frequency is within the acceptable threshold range.

27. The system of claim 20, wherein the processor is configured to set a baseline value of the frequency of vibration when the wireless signal is initially received and to determine whether a phase of the frequency of vibration deviates from a phase of the baseline value for subsequently received wireless signals.

28. The system of claim 20, wherein initiating the one or more preventative actions comprises initiating sending of an alert to display on a user interface screen of a monitoring system, initiating sending of the alert to a workstation to display, or some combination thereof.

29. The system of claim 20, wherein obtaining the acceptable threshold range comprises obtaining the acceptable threshold range from local or remote data sources as the one or more data sources.

30. The system of claim 20, wherein obtaining the acceptable threshold range comprises retrieving pre-stored test data, a design specification, or some combination thereof, related to the connecting rod.

31. The system of claim 20, wherein the processor is configured to determine that the connecting rod is cracked when frequencies of vibration exceed the acceptable threshold range of vibrations.

32. The system of claim 20, wherein the acceptable threshold range of vibrations for the connecting rod is based at least in part on a natural frequency of the connecting rod.

33. The system of claim 20, wherein controlling operation of the reciprocating combustion engine comprises stopping the reciprocating combustion engine.

34. The system of claim 20, comprising an additional wireless sensor configured to be disposed on a piston internal to the reciprocating internal combustion engine and to output an additional wireless signal to the controller indicative of a frequency of vibration of the piston.