Analysis system for analysing the condition of a machine

• US 20050209811A1
• Filed: 01/20/2003
• Published: 09/22/2005
• 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, Stefan, Lindberg, Jarl-Ove, Kummelstam, Jim, Hedlund, Hakan
• Granted Patent: US 7,200,519 B2
• Time in Patent Office: Days
• US Class Current: 702/122
• 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

A system for analyzing the condition of a machine having a rotating shaft and a machine body with a measuring point includes a client part communicating with a supplier part computer via a communications network. The client part includes: a sensor attachable at the measuring point for generating measurement data dependent on shaft rotation; an analysis apparatus for analyzing the condition of the machine based on the measurement data, the analysis apparatus having at least one input receiving the measurement data; a data processor for processing condition data dependent on the measurement data, the data processor including an element for performing condition monitoring functions and a logger registering their use; a communication port coupled to the data processor and connectable to the communications network to communicate with the supplier part computer. The analysis apparatus can deliver registered use information to the supplier part computer via the communication port.

Claims

1. A system for analysing the condition of a machine having a rotating shaft (8) and a machine body with a measuring point (12);

the system comprising a client part connectable to a communications network (18) for communication with a supplier part computer (20);

said client part comprising;

a sensor (10) attachable on or at said measuring point (12) for generating measurement data dependent on rotation of said shaft;

an analysis apparatus (14) for analysing the condition of the machine on the basis of said measurement data;

said analysis apparatus (14) having

at least one input for receiving said measurement data;

a 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); and

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

a communication port (16) coupled to said data processing means and connectable to said communications network (18) for communication with said supplier part computer (20);

wherein

said analysis apparatus is adapted to deliver information indicative of said registered use on said communication port (16) for delivery to said supplier part computer (20).

2. The apparatus according to claim 1, 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 a second condition monitoring function at a second rate.

3. The apparatus according to claim 2, 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.

4. The apparatus according to claim 2, 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.

5. The apparatus according to claim 1, 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).

6. The apparatus according to claim 1, wherein:

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

7. The apparatus according to claim 1, wherein

said plurality of condition monitoring functions (F1, F2, Fn) includes one or 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.

8. The apparatus according to claim 1, wherein

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

9. The apparatus according to claim 1, wherein

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

10. The apparatus according to claim 1, wherein

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

11. The apparatus according to claim 1, wherein

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

16. The apparatus according to claim 1, 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).

17. The apparatus according to claim 1, wherein:

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

18. The apparatus according to claim 2, further comprising

means for causing a user interface to indicate when use is registered at said first rate.

19. The apparatus according to claim 2, further comprising

means for causing a user interface to indicate when use is registered at said second rate.

20. The apparatus according to claim 2, wherein

said logger is adapted to register use of at least two of said condition monitoring functions (F1, F2, Fn);

and wherein

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

said logger is adapted to register use of a second condition monitoring function at a fourth rate, said fourth rate deviating from said third rate.

21. The apparatus according to claim 20, wherein

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

22. The apparatus according to claim 20, wherein

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

12. An apparatus for analysing the condition of a machine having a rotating shaft (8) and a machine body with a measuring point (12), comprising:

a sensor (10) attachable on or at said measuring point (12) for generating measurement data 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);

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

a communication port (16) coupled to said data processing means;

wherein

said analysis apparatus is adapted to deliver information indicative of said registered use on said communication port (16);

13. The apparatus according to claim 12, 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 a second condition monitoring function at a second rate.

14. The apparatus according to claim 13, 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.

15. The apparatus according to claim 13, 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.

23. The apparatus according to claim 12, 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.

24. The apparatus according to claim 12, wherein

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

25. The apparatus according to claim 26, wherein

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

26. The apparatus according to claim 12, wherein

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

27. The apparatus according to claim 28, wherein

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