ANALYSIS SYSTEM

• US 20100169047A1
• Filed: 03/12/2010
• Published: 07/01/2010
• Est. Priority Date: 01/18/2002
• Status: Active Grant

• Current Assignee: S.P.M. Instrument AB
• Original Assignee: S.P.M. Instrument AB
• Inventors: Hedlund, Håkan, Lindberg, Stefan, Lindberg, Jarl-Ove, Kummelstam, Jim
• Granted Patent: US 7,949,496 B2
• Time in Patent Office: Days
• US Class Current: 702/183
• 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 analyzing 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, the measurement data being dependent on rotation of the shaft; a data processor for processing condition data dependent on the measurement data; the data processor performing a plurality of condition monitoring functions (F1, F2 Fn). At least one of the plurality of condition monitoring functions (F1, F2 Fn) is a restricted function having a disabled state and an enabled state; the disabled state prohibiting complete execution of the condition monitoring function, and the enabled sate allowing execution. The apparatus allows a limited amount of use of the at least one restricted condition monitoring function; and at least one of the plurality of condition monitoring functions (F1, F2, Fn) is an unrestricted function.

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

at least one of said plurality of condition monitoring functions (F1, F2, Fn) is a restricted function having a disabled state and an enabled state;

said disabled state prohibiting complete execution of said condition monitoring function; and

said enabled state allowing execution;

wherein the apparatus is arranged to allow a limited amount of use of the at least one restricted condition monitoring function; and

wherein at least one of said plurality of condition monitoring functions (F1, F2, Fn) is an unrestricted function;

the apparatus further comprising

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

wherein

the apparatus is arranged to change the state of a restricted condition monitoring function from the enabled state to the disabled state when said registered use indicates that the limited amount of use has been spent; and

the apparatus is arranged to allow execution of the at least one unrestricted function irrespective of amount of use of the at least one unrestricted function.

2. The apparatus according to claim 1, further comprising

a user interface for allowing an operator to select to request the apparatus to perform a condition monitoring function;

means for checking whether a selected condition monitoring function (F1, F2, Fn) is a restricted function or an unrestricted function;

means for causing the apparatus to perform the selected condition monitoring function (F1, F2, Fn) when the selected condition monitoring function is an unrestricted function.

3. The apparatus according to claim 2, further comprising

means for causing the apparatus to check whether the selected condition monitoring function (F1, F2, Fn) is enabled or disabled when the selected condition monitoring function is a restricted condition monitoring function (F1, F2,Fn);

wherein

said logger is adapted to register use of the selected condition monitoring function when the selected condition monitoring function is an enabled restricted condition monitoring function (F1, F2, Fn).

4. The apparatus according to claim 1, wherein

the apparatus is arranged to register use of an enabled restricted condition monitoring function (F1, F2, Fn) by changing a value of a parameter (Use_F_k;

Credit_par, 250).

5. The apparatus according to claim 1, wherein

a first parameter (Use_F_k) is associated with a first restricted condition monitoring function (F_k);

said first parameter (Use_F_k) being indicative of a remaining amount of allowed use for the first restricted condition monitoring function (F_k); and

a second parameter (Use_F_i) is associated with a second restricted condition monitoring function (F_i);

said second parameter (Use_F_i) being indicative of a remaining amount of allowed use for the second restricted condition monitoring function (F_i).

6. The apparatus according to claim 5, wherein

said means for comparing is arranged to compare said first parameter (Use_F_k) with said first reference value, and wherein

said means for disabling is arranged to disable the first restricted condition monitoring function (F_k)in response to the outcome of the comparison of said first parameter (Use_F_k) with said first reference value when the comparison indicates that all allowed usage of the first restricted condition monitoring function (F_k) has been spent;

and wherein

said means for comparing is arranged to compare said second parameter (Use_F_i) with said first reference value, and wherein

said means for disabling is arranged to disable the second restricted condition monitoring function (F_k)in response to the outcome of the comparison of said second parameter (Use_F_i) with said first reference value when the comparison indicates that all allowed usage of the second restricted condition monitoring function (F_i) has been spent.

7. The apparatus according to claim 1, wherein the apparatus is arranged to register use of an enabled restricted condition monitoring function (F1, F2, Fn) by changing a value of a centralized parameter (Credit_par, 250).

8. The apparatus according to claim 1, wherein:

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

9. The apparatus according to claim 1, wherein:

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

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

10. The apparatus according to claim 9, 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.

11. The apparatus according to claim 9, 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.

12. 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 restricted condition monitoring functions (F1, F2,Fn).

13. The apparatus according to claim 9, wherein:

said registered use is a parameter indicative of a duration of time.