Digital vibration coupling stud

• US 6,513,386 B2
• Filed: 10/22/1999
• Issued: 02/04/2003
• Est. Priority Date: 10/22/1999
• Status: Expired due to Term

• Current Assignee: SKF USA Incorporated (SKF)
• Original Assignee: SKF Condition Monitoring Inc
• Inventors: McCarty, William A., Thompson, Stephan L., Barclay, John T.
• Primary Examiner(s): MOLLER, RICHARD ALAN
• Application Number:
  US09/425,511
• Publication Number:
  US 20020000126A1
• Time in Patent Office: 1,201 Days
• Field of Search: 736/49, 736/58, 736/60, 736/61, 735/93, 702/56
• US Class Current: 73/649
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis

Abstract

A vibration coupling stud for use in a vibration monitoring system includes digital memory and temperature sensing devices. Data is transferred between the vibration coupling stud and a vibration monitor. Data stored in the stud may include asset identification code, measuring point identification, prior measurement data, machine or bearing part numbers, and alarm limits.

Claims

1. A stud for coupling machine vibrations to a transducer comprising:

a body having a machine attachment portion for attaching said stud to a point on a machine; and

one or more memories mounted on said stud, wherein said memories store one or more types of data selected from the group consisting of alarm limits, bearing part number, bearing quality characteristics, lubrication information, installation date, signal filtering parameters, defect indication frequency, and date stamped value of a parameter measured during a previous data collection operation.

2. The vibration coupling stud of claim 1, wherein said stud comprises a body having an internal recess, said recess containing said one or more memories such that said body substantially surrounds said one or more memories.

3. The vibration coupling stud of claim 2, wherein said body comprises an electrically conductive portion and an insulating portion, wherein said electrically conductive portion and said insulating portions together substantially surround said one or more memories, and wherein said insulating portion is provided between an input/output terminal of said one or more memories and said electrically conductive portion of said body so as to isolate said data input/output terminal from said electrically conductive portion.

4. The vibration coupling stud of claim 2, wherein said stud comprises first and second engageable portions which clamp said one or more memories in said recess when said portions are engaged.

5. The vibration coupling stud of claim 4, wherein said first engageable portion comprises a vibration monitor coupling point, and wherein said second engageable portion comprises said machine attachment portion.

6. The vibration coupling stud of claim 5, wherein said vibration monitor coupling point comprises multiple start threads.

7. The vibration coupling stud of claim 6, wherein said first and second engageable portions are threadably engaged.

8. The vibration coupling stud of claim 6, wherein said one or more memories comprise a input/output terminal and a ground terminal.

9. The vibration coupling stud of claim 8, additionally comprising an electrical contact having one end in contact with said input/output terminal and another end extending through said first engageable portion.

10. The vibration coupling stud of claim 9, wherein said second engageable portion is in contact with said ground terminal.

11. The vibration coupling stud of claim 10, wherein said first engageable portion comprises a vibration monitor coupling point, and wherein said second engageable portion comprises said machine attachment portion.

12. The vibration coupling stud of claim 1, wherein said one or more memories further store an asset identification code.

13. A vibration monitoring system comprising:

a stud comprising a machine connection point and a vibration monitor connection point;

a vibration monitor comprising a coupler for removably coupling to said stud at said vibration monitor connection point so as to detect machine vibration through said stud, said vibration monitor further comprising a first memory circuit, wherein said first memory circuit stores one or more types of data selected from the group consisting of alarm limits, point identification data, date, time, and bearing data, said vibration monitor further comprising a data communication interface associated with said vibration monitor;

a second memory circuit mounted to said stud, wherein said second memory circuit stores one or more types of data selected from the group consisting of alarm limits, bearing part number, bearing quality characteristics, lubrication information, installation date, signal filtering parameters, defect indication frequency, and date stamped value of a parameter measured during a previous data collection operation, and wherein said second memory circuit is connected to a data communication interface associated with said stud, whereby data stored in said vibration monitor is transferred from said vibration monitor to said stud and data stored in said stud is transferred from said stud to said vibration monitor through said data communication interfaces.

14. The vibration monitoring system of claim 13, wherein said second memory circuit is mounted to a printed circuit board mounted on said stud.

15. The vibration monitoring system of claim 13, wherein said second memory circuit comprises an EEPROM.

16. The vibration coupling stud of claim 13, wherein said second memory circuit further stores an asset identification code.

17. A stud for coupling machine vibrations to a transducer comprising:

a body having a machine attachment portion for attaching said stud to a point on a machine; and

one or more memories mounted on said stud, wherein at least one of said one or more memories stores an asset identification code.

18. A vibration monitoring system comprising:

a stud comprising a machine connection point and a vibration monitor connection point;

a vibration monitor comprising a coupler for removably coupling to said stud at said vibration monitor connection point so as to detect machine vibration through said stud, said portable vibration monitor further comprising processing circuitry including a first memory circuit, wherein said first memory circuit stores one or more types of data selected from the group consisting of alarm limits, point identification data, date, time, and bearing data, and wherein said processing circuitry is connected to a communication interface associated with said vibration monitor;

a second memory circuit mounted to said stud, wherein said second memory circuit stores an asset identification code, and wherein said second memory circuit is connected to a communication interface associated with said stud, whereby data stored in said vibration monitor is transferred from said vibration monitor to said stud and data stored in said stud is transferred from said stud to said vibration monitor through said communication interfaces.