System and method for smoke detector performance analysis

Patent metadata

Field	Value
Publication number	US-10339793-B2
Application number	US-201514814805-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Jul 31, 2015
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A system for facilitating smoke detector performance analysis including a server configured to receive operational data from an alarm panel and to perform analytics using the operational data, wherein the operational data is associated with at least one smoke detector that is operatively connected to the alarm panel.

First claim

The invention claimed is:

1. A system for facilitating smoke detector performance analysis comprising one or more servers configured to:
receive, from an alarm panel, a database of historical operational data containing plural measurements for a smoke detector operatively connected to the alarm panel, the historical operational data based in part on dirtiness of the smoke detector; and
perform analytics based on the historical operational data in the received database, including being configured to:
determine, based on the historical operational data, an inflection point indicative of a recent cleaning or replacement of the smoke detector;
determine two or more trends of the smoke detector after the inflection point, wherein the two or more trends reflect dirt accumulation over two or more different data sets each over different times; and
determine whether the smoke detector requires maintenance based on a correlation of the two or more trends.

2. The system of claim 1 , wherein the historical operational data are configured in a desired format.

3. The system of claim 1 , further comprising an alarm reporting network configured to communicate alarm conditions from the alarm panel to a monitoring entity, wherein the one or more servers are configured to receive the database over an analytics network separate from an alarm reporting network, wherein the analytics network is subject to less stringent regulatory requirements as compared to the alarm reporting network.

4. The system of claim 1 , wherein the historical operational data includes:
a baseline average value associated with the smoke detector, wherein the baseline average value is a periodically or continuously updated average of output values of the smoke detector over time;
a peak value associated with the smoke detector;
a sensitivity value associated with the smoke detector, wherein the sensitivity value defines a number of counts above the baseline average value that is determined to be indicative of an alarm; and
wherein the one or more servers are configured to determine a difference between the peak value and the baseline average value, and generate an adjustment to the sensitivity value based on the difference.

5. The system of claim 1 , wherein the one or more servers are configured to use the historical operational data to perform an average value assessment by comparing a baseline average value associated with the smoke detector with predefined dirtiness threshold levels to categorize one or more levels of smoke detector dirtiness.

6. The system of claim 1 , wherein the one or more servers are further configured to use the historical operational data to perform a directional vector analysis including being configured to:
subtract a first output value of the smoke detector generated at a first time from a second output value of the smoke detector generated at a second time after the first time to obtain a delta output value;
calculate a difference in time between timestamps of the first output value and the second output value;
generate a ratio or rate of change based on the delta output value and the difference in time; and
wherein the one or more servers are further configured to determine whether the smoke detector requires maintenance based on the ratio or the rate of change.

7. The system of claim 1 , wherein the one or more servers are further configured to use the historical operational data to perform peak analytics including being configured to:
examine a highest count value for the smoke detector during a given time period, as a percentage of an alarm value of the smoke detector; and
determine, in response to the highest count value regularly traversing a first threshold value or a mean of the highest count value being above a second threshold value, that the smoke detector has an increased risk of producing a nuisance alarm.

8. The system of claim 1 , wherein the one or more servers comprise:
a remote services server that is configured to receive, parse, and store the historical operational data;
an applications server that is configured to perform the analytics on the historical operational data; and
a web portal server that is configured to make results of the analytics accessible for review.

9. The system of claim 8 , wherein a client device connected to the web portal server is configured to display the results.

10. A method for facilitating smoke detector performance analysis comprising:
receiving, at a server, a database of historical operational data from an alarm panel, the historical operational data containing plural measurements for a smoke detector and being based in part on dirtiness of the smoke detector connected to the alarm panel; and
performing analytics using the historical operational data in the received database, including:
determining, based on the historical operational data, an inflection point indicative of a recent cleaning or replacement of the smoke detector;
determining two or more trends of the smoke detector after the inflection point, wherein the two or more trends reflect dirt accumulation over two or more different data sets each over different times; and
determining whether the smoke detector requires maintenance based on a correlation of the two or more trends.

11. The method of claim 10 , wherein the historical operational data includes a baseline average value associated with the smoke detector, wherein the baseline average value is a periodically or continuously updated average of output values of the smoke detector over time.

12. The method of claim 10 , wherein the historical operational data includes a sensitivity value associated with the smoke detector, wherein the sensitivity value defines a number of counts above a baseline average value that is determined to be indicative of an alarm.

13. The method of claim 10 , wherein the historical operational data includes a peak value associated with the smoke detector.

14. The method of claim 10 , wherein the receiving of the historical operational data comprises receiving over an analytics network that is separate from an alarm reporting network over which the alarm panel communicates alarm conditions to one or more monitoring entities, wherein the analytics network is subject to less stringent regulatory requirements as compared to the alarm reporting network.

15. The method of claim 10 , wherein the server performing analytics using the historical operational data includes using the historical operational data to perform at least one of an average value assessment, a directional vector analysis, a trend analysis, and a peak analytics.

16. The method of claim 10 , wherein communicating the historical operational data to the server comprises:
communicating the historical operational data to a remote services server that receives, parses, and stores the historical operational data;
communicating the historical operational data from the remote services server to an applications server that performs the analytics on the historical operational data; and
communicating the historical operational data to a web portal server that makes results of the analytics accessible for review.

17. The method of claim 16 , wherein the web portal server presents the results on a client device.

18. The method of claim 16 , further comprising transmitting new sensitivity values to the alarm panel for smoke detectors that are determined to have an increased risk of nuisance alarm activation.

19. The method of claim 10 , wherein the receiving of the historical op

Assignees

• Johnson Controls Fire Prot Lp

Inventors

• Moffa Anthony Philip

Classifications

• G08B29/043 Primary

  of fire detection circuits · CPC title

• G08B29/145

  of fire detection circuits · CPC title