WARNING DEVICE AND METHOD FOR MONITORING ALARM STATUS OF A VIBRATION LEVEL OF A PIECE OF ROTATING MACHINERY HAVING AN ADAPTIVE ALARM INDICATOR

• US 20150211916A1
• Filed: 06/20/2013
• Published: 07/30/2015
• Est. Priority Date: 06/22/2012
• Status: Abandoned Application

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: Murphy, Jonathan David, McGinn, Mark
• Application Number:
  US14/408,641
• Publication Number:
  US 20150211916A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G08B 21/18 Status alarms G08B21/02 takes precedence
• CPC Class Codes: G08B 21/187 Machine fault alarms
• CPC Class Codes: G08B 29/181 due to failing power supply
• CPC Class Codes: G08B 5/38 using flashing light

Abstract

A warning device apparatus for monitoring an alarm status of a bearing that is mounted to a piece of rotating machinery is provided. The warning device includes a body portion, a top portion, a base portion, a power source for powering the device throughout a life of operation, a controller for controlling the operation of the warning device and at least one LED for displaying the alarm status. An operator inspects the warning device for an initial alarm indication by visually inspecting the at least one LED. The at least one LED is controlled to blink at a relatively quick initial rate and/or intensity that maximizes indicator visibility to the operator at initial indication. The at least one LED is controlled to blink at a slower/decreasing rate as time passes. Battery life of operation is extended by virtue of the slower/increased blink rate and conversely the increased pause time.

Claims

1. A warning device for monitoring alarm status of a vibration level a piece of rotating machinery, the warning device comprising:

a body portion;

a top portion;

a base portion;

a power source for powering the device throughout a life of operation;

a control unit for controlling the operation of the warning device;

at least one colored light indicator for displaying the alarm status of the monitored vibration level; and

wherein

the at least one colored light indicator being energized to blink after an initial alarm indication; and

wherein

the at least one colored light indicator being controlled to blink at a relatively quick initial rate and/or intensity that maximizes indicator visibility; and

wherein

the at least one colored light indicator being controlled to blink at a relatively slower decreasing rate as time passes from the initial indication event; and

wherein

power source life of operation is extended by virtue of the relatively decreasing blink rate from initial alarm indication over time.

2. The warning device of claim 1, wherein the power source is a lithium battery rated for long life.

3. The warning device of claim 2, wherein the lithium battery is sealed in epoxy and is not replaceable.

4. The warning device of claim 1, wherein the power source life of operation decreases proportionally with the number of alarm detections.

5. The warning device of claim 1, wherein the power source supports operation of the warning device for three years of life after one alarm detection.

6. The warning device of claim 1, wherein the power source supports operation of the warning device for two years of life after two alarm detections.

7. The warning device of claim 1, wherein the power source supports operation of the warning device for one year of life after three alarm detections.

8. The warning device of claim 1, wherein the warning device is manually reset after an alarm condition is detected.

9. The warning device of claim 1, wherein the warning device can be reset up to three times before replacement is required.

10. The warning device of claim 1, wherein the at least one colored light indicator further comprises a tri-color LED.

11. The warning device of claim 1, wherein the control unit further comprises a circuit board that works in conjunction with at least one sensor to monitor vibration.

12. The warning device of claim 1, wherein the vibration level of a bearing is being monitored.

13. The warning device of claim 1, wherein the vibration level of a gearbox is being monitored.

14. A method of indicating an alarm status of a warning device that monitors a life of a bearing, the bearing and warning device disposed proximate to each other on a piece of rotating industrial machinery, the method of indicating the alarm status comprising the steps of:

providing the warning device having;

a control unit,

at least one colored light indicator, and

a power source; and

controlling the operation of the warning device with the control unit,

displaying the alarm status with the at least one light indicator,

powering the device throughout a life of operation with the power source;

indicating an initial alarm indication with the at least one colored light indicator, and controlling the at least one colored light indicator with the control unit to blink at a relatively quick initial rate and/or intensity that maximizes indicator visibility at initial indication;

controlling the at least one colored light indicator with the control unit to blink at a relatively slower decreasing rate as time passes from the initial indication; and

wherein

extending power source life of operation by virtue of the relatively decreasing blink rate from initial indication over time is achieved.