System for monitoring units excited by oscillations

• US 6,233,527 B1
• Filed: 02/17/1999
• Issued: 05/15/2001
• Est. Priority Date: 12/12/1996
• Status: Expired due to Term

• Current Assignee: PRÜFTECHNIK Dieter Busch AG (Fortive Corp.)
• Original Assignee: PRÜFTECHNIK Dieter Busch AG (Fortive Corp.)
• Inventors: Franke, Dieter, Weichselbaumer, Martin, Bühler, Steffen
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Bui, Bryan
• Application Number:
  US09/125,046
• Time in Patent Office: 818 Days
• Field of Search: 702/56, 702/182, 702/185, 702/187, 735/79, 736/60, 736/61, 235/375, 235/376
• US Class Current: 702/56
• CPC Class Codes: G01H 1/00 Measuring characteristics of vibrations in solids by using direct conduction to the detector G01H9/00, G01H11/00 take precedence
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Abstract

A system for monitoring units excited by oscillations, having a computer-controlled central processing unit and a computer-controlled, transportable measuring apparatus. The measuring apparatus is programmed by the central processing unit, by way of a data transmission, with at least some measuring points which can be inspected in a prescribable time period within prescribable time limits from a total number of measuring points assigned to the units. The measuring points are automatically displayed in the measuring apparatus and are processed using the measuring apparatus, in order to execute a measuring task determined by the central processing unit. After ending the route, the measuring apparatus transmits the measured data to the central processing unit by way of a data transmission. The central processing unit has an evaluator and/or display for the measured data. In the central processing unit, for each of the measuring points, at least one standard measuring task and at least one extended measuring task is stored. These are loaded into the measuring apparatus according to the selected route. Only the standard measuring task is carried out at the measuring points and at least one of the extended measuring tasks is automatically displayed and carried out at the relevant measuring point as a function of the occurrence of a registrable event which can be assigned to the unit having the measuring point. The measurement results of the standard and extended measurements carried out are transferred into the central processing unit and evaluated.

Claims

1. A system for monitoring a vibrating machine, said system comprising:

a central processing unit having a data storage subunit and a data evaluation subunit, said storage subunit having stored therein;

a route containing at least one standard measuring task to be performed in a prescribable time period and order at selectable ones of a plurality of prescribable measuring points on said machine; and

an extended measuring task to be performed upon the occurrence of a prescribed event at a measuring point on said machine; and

a transportable measuring apparatus capable of communicating with said central processing unit, said transportable measuring apparatus having means for;

receiving said route including sad standard measuring task and said extended measuring task for said selected measuring points on said machine,

for displaying and performing said standard measuring task at said selected measuring points in accordance with the prescribed time period and order of the route received from the central processing unit,

for automatically displaying and performing said extended measuring task in response to occurrence of the prescribed predctcmmed event during execution of said standard measuring task,

for storing data obtained from performance of the measuring tasks, and

for transmitting measurement data obtained during performance of said measuring tasks with said transportable measuring apparatus to said central procesiig unit for evaluation therein by said evaluation subunit.

2. The system of claim 1, wherein said standard measuring task includes a predetermined time period within which it is to be executed and predetermined time limits of additional standard measuring tasks for other measuring points on said vibrating machine.

3. The system of claim 1, wherein said transportable measuring apparatus is adapted to communicate measurements obtained during said at least one of said standard measuring task and said extended measuring task.

4. The system of claim 1, wherein said central processing unit includes display means for displaying results of evaluations performed by said evaluation and measurements obtained by said transportable measuring apparatus.

5. The system of claim 1, wherein said standard measuring task includes measuring a predetermined characteristic of said machine.

6. The system of claim 5, wherein said standard measuring task includes an error threshold for each of a plurality of error categories of said predetermined characteristic, wherein said transportable measuring apparatus is adapted to combine each measured characteristic that exceeds said error threshold for said corresponding error category.

7. The system of claim 1, wherein said extended measuring task comprises a repeat of said standard measuring task, wherein said transportable measuring apparatus comprises a display that is capable of displaying said extended measuring task.

8. The system of claim 1, wherein said predetermined event comprises a selectable error categorization of said measurements obtained during said standard measuring task.

9. The system of claim 1, wherein said predetermined event comprises input received from an operator of said transportable measuring apparartus.

10. The system of claim 9, wherein said input comprises an event code which is stored in said transportable measuring apparatus, is assigned to the measurements obtained during said standard measuring task and which comprises one of a plurality of selectable event codes.

11. The system of claim 9, wherein said input comprises a comment being stored in said transportable measuring apparatus and which is assigned to the measurements obtained during said standard measuring task.

12. The system of claim 1, wherein said predetermined event comprises a measurement that exceeds a predetermined deviation from a measurement obtained during execution of a previous standard measuring task.

13. The system of claim 1, wherein said extended measuring task comprises measuring one of a frequency characteristic and a time characteristic of a measurement taken during the execution of said standard measuring task.

14. The system of claim 1, wherein at least one of said standard measuring task and said extended measuring task is based upon the type of said machine.

15. The system of claim 1, wherein said transportable measuring apparatus is further capable of communicating with said central processing unit for receiving at least one additional standard measuring task and at least one additional extended measuring task and wherein said additional standard measuring task and said at least one additional extended measuring task forms a pool.

16. The system of claim 1, wherein said transportable measuring apparatus is further capable of communicating with said central processing unit for receiving at least one additional standard measuring task that will attempt to verify a measurement obtained during execution of said original standard measuring task.

17. The system of claim 1, wherein said transportable measuring apparatus is further capable of communicating with said central processing unit for receiving at least one free standard measuring task and at least one corresponding extended measuring task that are not assigned to a measuring point and wherein said central processing unit is adapted to assign a measuring point to said at least one free standard measuring task and at least one corresponding extended measuring task.

18. The system of claim 1, wherein said transportable measuring apparatus is capable of communicating with said central processing unit for receiving another extended measuring task, wherein said transportable measuring apparatus is responsive to a second predetermined event during execution of said extended measuring task to prompt execution of said another extended measuring task.

19. The system of claim 1, wherein said second predetermined event includes a predetermined relationship between a measurement obtained during said standard measuring task and a measurement obtained during said extended measuring task.

20. The system of claim 1, wherein said standard measuring task is a measurement of a level of a single frequency band and wherein said extended measuring task is a measurement of a complete frequency characteristic.

21. The system of claim 1, wherein said route comprises a plurality of standard measuring tasks and wherein said transportable measuring apparatus is responsive to the non-occurrence of said predetermined event to skip at least one of said plurality of standard measuring tasks in said route.

22. The system of claim 1, wherein said standard measuring task includes taking measurements at one of a plurality of measuring points on said machine and wherein said extended measuring task includes taking meauements at another of said plurality of measuring points.