Apparatus for analysing the condition of a machine

• US 20050177333A1
• Filed: 01/20/2003
• Published: 08/11/2005
• Est. Priority Date: 01/18/2002
• Status: Active Grant

• Current Assignee: S.P.M. Instrument AB
• Original Assignee: S.P.M. Instrument AB
• Inventors: Lindberg, Jar-Ove, Lindberg, Stefan, Kummelstam, Jim, Hedlund, Hakan
• Granted Patent: US 7,324,919 B2
• Time in Patent Office: Days
• US Class Current: 702/113
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence
• CPC Class Codes: G01H 1/14 Frequency
• CPC Class Codes: G01H 1/16 Amplitude
• CPC Class Codes: G01M 1/28 with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G01M 15/04 Testing internal-combustion engines
• CPC Class Codes: G01M 15/048 by monitoring temperature
• CPC Class Codes: G01M 15/12 by monitoring vibrations
• CPC Class Codes: G05B 23/0221 Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
• CPC Class Codes: G07C 3/08 Registering or indicating the production of the machine either with or without registering working or idle time
• CPC Class Codes: G07C 3/10 using counting means
• CPC Class Codes: G07C 9/27 with central registration
• CPC Class Codes: G07C 9/33 by means of a password

Abstract

An apparatus for analysing the condition of a machine having a rotating shaft, includes: at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine, the measurement data being dependent on rotation of the shaft; and a data processing device for processing condition data dependent on the measurement data. The data processing device includes a device for performing a plurality of condition monitoring functions (F1, F2, Fn), wherein the data processing device includes a Field Programmable Gate Array circuit coupled to the at least one input.

Claims

1. An apparatus for analysing the condition of a machine having a rotating shaft, comprising:

at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine;

said measurement data being dependent on rotation of said shaft;

data processing means for processing condition data dependent on said measurement data;

said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2,Fn), wherein

said data processing means includes a Field Programmable Gate Array circuit coupled to said at least one input.

2. The apparatus according to claim 1, wherein:

said data processing means comprises at least two data processing devices co-operating so as to control operation of said condition analysis apparatus;

a first one of said data processing devices being said Field Programmable Gate Array circuit.

3. The apparatus according to claim 1, wherein:

a second one of said data processing devices (50A) operates to control the operation of the Field Programmable Gate Array circuit.

4. The apparatus according to claim 1, further comprising:

a plurality of memory segments for storing program code; and

program code means, stored on at least one of said memory segments, which when run on said Field Programmable Gate Array circuit (50B) causes the condition analysis apparatus to execute a condition monitoring function.

5. The apparatus according to claim 4 when dependent on claim 3, further comprising:

program code means, stored on at least one of said memory segments, which when run on said second data processing device (50A) causes the second data processing device to control the operation of the Field Programmable Gate Array.

6. The apparatus according to claim 1, wherein:

said Field Programmable Gate Array circuit (50B) is programmable to execute said plurality of condition monitoring functions.

7. The apparatus according to claim 1, wherein:

at least some of said plurality of condition monitoring functions (F1, F2, Fn) are at least partly embodied by computer program code.

8. The apparatus according to claim 1, wherein

at least one of said condition monitoring functions (F1, F2,Fn) generates said condition data in response to measurement data indicative of vibration.

9. The apparatus according to claim 1, wherein

said at least one input includes an input adapted to receive shock pulse measurement data;

said adapted input comprising means for treatment of said shock pulse measurement data and delivery of said treated data to said data processing means.

10. The apparatus according to claim 1, wherein

at least one of said condition monitoring functions (F1, F2,Fn), when running, generates said condition data in response to measurement data indicative of temperature.

11. The apparatus according to claim 10, wherein said at least one input includes an input adapted to receive measurement data indicative of temperature;

said adapted input comprising means for treatment of said temperature measurement data and delivery of said treated data to said data processing means.

12. The apparatus according to claim 1, wherein

said at least one input includes an input adapted to receive an analogue measurement signal indicative of temperature;

said apparatus further comprising

an A/D-converter (44B) which is coupled to receive said analogue temperature measurement signal; and

wherein

said Field Programmable Gate Array circuit is coupled to receive digital temperature data from said A/D-converter.

13. The apparatus according to claim 1, wherein

said at least one input includes at least one analogue-to-digital converter coupled so as to enable reception of an analogue signal and delivery of a corresponding digital signal to said data processing means.

14. The apparatus according to claim 1, wherein

said at least one input includes an input (42D) adapted to receive binary tachometering measurement signals.

15. The apparatus according to claim 1, wherein

said at least one input for receiving measurement data comprises a plurality of inputs coupled to said Field Programmable Gate Array circuit.

16. The apparatus according to claim 15, wherein

said plurality of inputs comprises two or three or more types of inputs selected from the group consisting of shock pulse measurement signal input (42A), temperature signal input (42B), vibration measurement signal input (42C), tachometering measurement signal input (42D).

17. The apparatus according to claim 1, wherein

said plurality of condition monitoring functions (F1, F2,Fn) includes two or three or more functions selected from the group consisting of:

vibration analysis, temperature analysis, shock pulse measuring, spectrum analysis of shock pulse measurement data, Fast Fourier Transformation of vibration measurement data, graphical presentation of condition data on a user interface, storage of condition data in a writeable information carrier on said machine, storage of condition data in a writeable information carrier in said apparatus, tachometering, imbalance detection, misalignment detection.

18. The apparatus according to claim 1,

said plurality of condition monitoring functions (F1, F2,Fn) includes a function for imbalance detection.

19. The apparatus according to claim 18, wherein said plurality of condition monitoring functions (F1, F2,Fn) includes a function for balancing.

20. The apparatus according to claim 1, wherein

said plurality of condition monitoring functions (F1, F2,Fn) includes a function for misalignment detection.

21. The apparatus according to claim 20, wherein said plurality of condition monitoring functions (F1, F2,Fn) includes a function for alignment.

22. The apparatus according to claim 1, wherein

at least one of said plurality of condition monitoring functions (F1, F2,Fn) has an enabled state and a disabled state.

23. The apparatus according to claim 1, having:

an apparatus body; and

a display provided on, at or in, said apparatus body.

24. The apparatus according to claim 23, wherein:

said display has a display area of at least 4125 mm².

25. The apparatus according to claim 23, wherein:

said apparatus body has a body volume of less than 1006 250 mm².

26. The apparatus according to claim 23, wherein:

said display has a display area of at least 4800 mm².

27. The apparatus according to claim 23, wherein:

said apparatus body has a body volume of less than 800 000 mm².

28. The apparatus according to claim 23, wherein:

said apparatus body is portable; and

said apparatus body is shaped and adapted to enable a one-hand grip;

said apparatus body including user interaction means adapted to enable user interaction by means of said one hand.

29. The apparatus according to claim 23, wherein:

said apparatus body is houses readable and writeable memory means having a storage capacity exceeding 8 megabits.

30. The apparatus according to claim 29, wherein:

said storage capacity exceeds 240 megabits.

31. The apparatus according to claim 1, further comprising:

a logger for registering use of at least one of said condition monitoring functions (F1, F2,Fn).

32. The apparatus according to claim 31, further comprising:

a communication port (16);

wherein

said apparatus is adapted to be capable of delivering data indicative of said registered use on said communication port (16).

33. The apparatus according to claim 1, wherein:

at least one of said plurality of condition monitoring functions (F1, F2,Fn) has an enabled state and a disabled state.

34. The apparatus according to claim 1, wherein:

all or several of said plurality of condition monitoring functions (F1, F2,Fn) have an enabled state and a disabled state such that each of said all or several condition monitoring functions can be individually enabled or disabled.

35. The apparatus according to claim 31, further comprising:

means for comparing said registered use with a first reference value,

means for disabling said data processing means or at least one of said condition monitoring functions (F1, F2,Fn) in response to the outcome of said comparison.

36. The apparatus according to claim 31, further comprising:

key reception means adapted to allow further use of said data processing means in response to reception of a first key.

37. The apparatus according to claim 1, further comprising:

key reception means adapted to allow further use of a selected one of said condition monitoring functions (F1, F2,Fn) in response to reception of a key associated with said selected function.

38. The apparatus according to claim 36, wherein:

said key reception means includes a communication port (16); and

said key includes a key word comprising information indicative of an amount of usage to be allowed.

39. The apparatus according to claim 33, further comprising:

a user interface for allowing an operator to indicate a desire to execute a condition monitoring function (F1, F2,Fn);

means for checking whether the indicated function is disabled or enabled;

means for causing execution of said indicated function when enabled.

40. The apparatus according to claim 31, wherein:

said logger is adapted to register use of a first condition monitoring function a first rate; and

said logger is adapted to register use of a second condition monitoring function at a second rate.

41. The apparatus according to claim 40, wherein

said second rate is such that use registered at said second rate causes a higher cost per unit of usage than use registered at said first rate.

42. The apparatus according to claim 40, wherein

said second rate is such that use registered at said second rate causes a lower cost per unit of usage than use registered at said first rate.

43. The apparatus according to claim 31, wherein:

said registered use is a parameter indicative of a number of executions of at least one of said condition monitoring functions (F1, F2,Fn).

44. The apparatus according to claim 31, wherein:

said registered use is a parameter indicative of an extent of time.