SYSTEM AND METHOD FOR MONITORING USAGE AND PREDICTING FAILURE OF VISUAL NOTIFICATION APPLIANCES

• US 20130002424A1
• Filed: 06/30/2011
• Published: 01/03/2013
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Tyco Fire & Security GmbH (Johnson Controls International plc)
• Original Assignee: Simplexgrinnell LP (Johnson Controls International plc)
• Inventors: Haynes, John R.
• Granted Patent: US 8,797,157 B2
• Time in Patent Office: Days
• US Class Current: 340/540
• CPC Class Codes: G08B 5/36 using visible light sources

Abstract

A system and method for monitoring usage and predicting failure of visual notification appliances are disclosed. The visual notification appliances may be strobe lights, which can be provided with an internal counter circuit that obtains a cumulative tally of the number of times the strobe has flashed. Since strobe service life is directly proportional to the number of flashes, monitoring the number of flashes enables proactive repair or replacement of the strobe prior to failure. Flash counts can be stored in the appliance and periodically transmitted to a remote location such as a fire panel or remote monitoring center. Flash counts can also be locally displayed, or can be readable by a user with a handheld device. Alarms or other indications may automatically be generated to alert building or service personnel when an end of life condition is approaching for one or more strobes. Other embodiments are disclosed and claimed.

Claims

1. A visual notification appliance, comprising:

a strobe light;

a counter for storing a value indicative of a number of times said strobe light has flashed; and

a display for providing occurred visual indication based on the stored value and a predetermined threshold.

2. The visual notification appliance of claim 1, wherein the counter comprises a register.

3. The visual notification appliance of claim 1, further comprising a network connection for transmitting said number of times said light source has flashed to a remote device.

4. The visual notification appliance of claim 3, wherein the remote device comprises a fire alarm panel.

5. The visual notification appliance of claim 3, wherein the remote device comprises a central monitoring station.

6. The visual notification appliance of claim 3, wherein the remote device comprises a hand-held device.

7. The visual notification appliance of claim 1, further comprising a display for displaying a number of times said light source has flashed.

8. The visual notification appliance of claim 1, wherein the visual indication indicates that a predetermined number of flashes has occurred.

9. The visual notification appliance of claim 1, wherein the number of times said strobe light has flashed is one of:

absolute;

measured relative to an occurrence of an event; and

measured relative to a time period.

10. A visual notification appliance, comprising:

a light source;

an interface for receiving a command to flash the light source;

an electronic counter for storing a value indicative of a number of times the light source has flashed during a time interval; and

means for reporting a message representative of the stored number of times the light source has flashed.

11. The visual notification appliance of claim 10, wherein the time interval begins when the light source is first flashed.

12. The visual notification appliance of claim 10, wherein the means for reporting transmits the stored number of times the light source has flashed to a remote device.

13. The visual notification appliance of claim 12, wherein the remote device is a fire alarm control panel.

14. The visual notification appliance of claim 12, wherein the remote device is a hand-held receiver.

15. The visual notification appliance of claim 10, wherein said message is transmitted via a network interface.

16. The visual notification appliance of claim 10, wherein said message is transmitted via a wireless connection.

17. The visual notification appliance of claim 10, wherein said means for reporting sends an indication that the stored number of times the light source has flashed exceeds a predetermined threshold.

18. The visual notification appliance of claim 17, wherein said predetermined threshold is representative of an expected end-of-life failure of the appliance.

19. A method for monitoring usage of a visual notification appliance, comprising:

registering a count each time an associated light source flashes;

obtaining cumulative count information for said light source based on said registered counts;

comparing said cumulative count information to a predetermined count limit; and

providing an alert when said cumulative count information exceeds the predetermined count limit.

20. The method of claim 19, wherein the predetermined count limit corresponds to an end of service life for the light source.

21. The method of claim 19, further comprising sending said cumulative count information from said visual notification appliance to a remote device.

22. The method of claim 21, wherein the remote device is a fire alarm control panel.

23. A system for monitoring usage of a visual notification appliance, comprising:

a visual notification appliance configured to register a count each time an associated light source flashes, and to obtain cumulative count information based on said registered counts; and

a receiver configured to compare said cumulative count information to a predetermined count limit and provide an alert when said cumulative count information exceeds the predetermined count limit.

24. The system of claim 23, wherein the predetermined count limit corresponds to an end of service life for the light source.

25. The system of claim 23, wherein the visual notification appliance is configured to transmit said cumulative count information to a remote device.