METHOD, COMPUTER PROGRAM PRODUCT & SYSTEM

• US 20160033363A1
• Filed: 04/05/2013
• Published: 02/04/2016
• Est. Priority Date: 04/05/2013
• Status: Active Application

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: MURRAY, Brian, THOMSON, Allan, ROCHFORD, Ivan
• Application Number:
  US14/782,364
• Publication Number:
  US 20160033363A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G01N 2291/2696 Wheels, Gears, Bearings
• CPC Class Codes: G01N 29/14 using acoustic emission techniques echo of particles G01N29/046; measuring mechanical vibrations or acoustic waves in solids in general G01H1/00
• CPC Class Codes: G01N 29/4454 Signal recognition, e.g. specific values or portions, signal events, signatures
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: G06F 17/10 Complex mathematical operations function generation by table look-up G06F1/03; evaluation of elementary functions by calculation G06F7/544
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

A method for processing data obtained from a condition monitoring system, the method comprising steps of obtaining one of a vibration enveloped or an acoustic emission envelope time waveform from at least one sensor, counting at least one of: (a) how many transient events cross a plurality of predetermined threshold levels within the time waveform, (b) a rate at which transient events cross a plurality of predetermined threshold levels within the time waveform, and (c) determining a periodicity of repetition of the transient events where applicable.

Claims

1. A method for processing data obtained from a condition monitoring system, the method comprising steps of:

obtaining a vibration enveloped or an acoustic emission envelope time waveform from at least one sensor; and

at least one of;

counting how many transient events cross a plurality of predetermined threshold levels within the time waveform,

counting the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform, and

determining a periodicity of repetition of the transient events where applicable.

2. The method according to claim 1, wherein at least one of the following is carried out from one of a zero or a mean of the time waveform:

(a) the step of counting how many transient events cross a plurality of predetermined threshold levels within the time waveform, and

(b) the step of counting the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform.

3. The method according to claim 1, further comprising a step of carrying out on the filtered time waveform, at least one of:

a step of filtering the time waveform,

the step of counting how many transient events cross a plurality of predetermined threshold levels within the filtered time waveform, and

the step of counting the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform.

4. The method according to claim 1, the method further comprising a step of at least one of transmitting and displaying at least one of the counts and count rate instead of at least one of transmitting and displaying the time waveform.

5. The method according to claim 1, wherein the at least one of the counts and the count rate is transmitted wirelessly over a wireless communication network.

6. The method according to claim 1, the method further comprising a step of providing a histogram of transient event amplitudes.

7. The method according to claim 1, wherein the condition monitoring system is arranged to monitor at least one bearing.

17. A method according to claim 1, wherein the condition monitoring system is arranged to monitor at least one rolling element bearing.

8. A computer program product, comprising:

a computer program containing computer program code arranged to cause a computer or a processor to execute steps of;

obtaining a vibration enveloped or an acoustic emission envelope time waveform (28) from at least one sensor; and

at least one of;

counting how many transient events cross a plurality of predetermined threshold levels within the time waveform,

counting the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform, and

determining a periodicity of repetition of the transient events where applicable,

wherein the computer program is stored on a computer-readable medium or a carrier wave.

9. A system for processing data obtained from a condition monitoring system including at least one sensor arranged to provide one of a vibration enveloped or an acoustic emission time waveform, the data processing system comprising:

a processing unit arranged to at least one of;

(a) count how many transient events cross a plurality of predetermined threshold levels within the time waveform,

(b) count the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform, and

(c) determine a periodicity of repetition of the transient events where applicable.

10. The system according to claim 9, wherein the processing unit is arranged to at least one of:

count how many transient events cross a plurality of predetermined threshold levels within the time waveform, and

count the rate at which transient events cross a plurality of predetermined threshold levels within the time waveform from one of a zero or a mean of the time waveform.

11. The system according to claim 9, wherein the processing unit is arranged to filter the time waveform and at least one of:

count how many transient events cross a plurality of predetermined threshold levels within the filtered time waveform and/or

count the rate at which transient events cross a plurality of predetermined threshold levels within the filtered time waveform.

12. The system according to claim 9, further comprising a transmission unit to at least one of:

transmit feature and a display feature to display at least one of the counts and the count rate instead of the time waveform.

13. The system according to claim 9, further comprising a transmission feature to transmit at least one of the counts and the count rate wirelessly over a wireless communication network.

14. A system according to claim 9, the processing unit is arranged to provide a histogram of transient event amplitudes.

15. A system according to claim 9, the condition monitoring system is arranged to monitor at least one bearing.

16. A system according to claim 9, the condition monitoring system is arranged to monitor at least one rolling element bearing.