Hazard and Threat Assessment System

• US 20090045937A1
• Filed: 08/15/2007
• Published: 02/19/2009
• Est. Priority Date: 08/15/2007
• Status: Abandoned Application

• Current Assignee: Simplexgrinnell LP (Johnson Controls International plc)
• Original Assignee: Simplexgrinnell LP (Johnson Controls International plc)
• Inventors: Zimmerman, Larry
• Application Number:
  US11/839,319
• Publication Number:
  US 20090045937A1
• Time in Patent Office: Days
• US Class Current: 340/506
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: G08B 17/10 Actuation by presence of smoke or gases , e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
• CPC Class Codes: G08B 25/14 Central alarm receiver or annunciator arrangements

Abstract

A fire alarm system for graphically illustrating a fire alarm event is provided. The fire alarm system may receive fire alarm information from one or more fire sensors in a building, and may determine a rate of change of at least one aspect of the fire sensor. The rate of increase of temperature, the length that the fire sensor has been activated, the progression of the fire, etc. The rate of change may be graphically illustrated to enable the operator to quickly assess the fire alarm event. A fire alarm system, whose actions are modified by the rate of change of the fire alarm event, is also provided. Depending on the rate of change, one or more input devices (e.g., cameras or other sensors) one or more output devices (e.g., sprinklers, notification appliances, etc.) in the fire alarm system may be controlled.

Claims

1. A fire alarm monitoring system comprising:

a receiver adapted to receive fire alarm information from a plurality of fire sensors in a building, the fire alarm information indicative of a fire alarm event;

a controller in communication with the receiver for determining a rate of change or a duration of at least one aspect of the fire alarm event and for determining a graphical illustration to graphically illustrate the rate of change or the duration; and

a display in communication with the controller, the display adapted to graphically illustrate the graphic illustration of the rate of change or the duration of the at least one aspect of the fire alarm event.

2. The fire alarm monitoring system of claim 1, wherein the controller determines for at least one of the plurality of fire sensors a time period during which the sensor provided information indicative of the fire alarm event;

wherein the duration comprises the time period during which the at least one of the plurality of fire sensors has sent a signal indicating an alarm condition; and

wherein the display is adapted to graphically illustrate the time period of at least one of the plurality of sensors.

3. The fire alarm monitoring system of claim 1, wherein the rate of change comprises a rate of increase of temperature;

and

wherein the display is adapted to graphically illustrate the rate of increase of the temperature of at least one of the plurality of sensors.

4. The fire alarm monitoring system of claim 1, wherein the rate of change comprises a progression of the fire alarm event;

wherein the controller determines the progression of the fire alarm event; and

wherein the display is adapted to graphically illustrate the progression of the fire alarm event.

5. The fire alarm monitoring system of claim 1, wherein the controller selects a color from a plurality of colors to indicate the rate of change or the duration of the fire alarm event;

and

wherein the display is adapted to graphically illustrates the rate of change or the duration based on the color selected.

6. The fire alarm monitoring system of claim 1, wherein the controller selects a size of an icon to indicate the rate of change or the duration of the fire alarm event;

and

wherein the display is adapted to graphically illustrates the selected icon.

7. The fire alarm monitoring system of claim 1, wherein the display is further adapted to illustrate positions of the sensors in the building and to correlate the graphic illustration of the rate of change or the duration with positions of at least some of the sensors in the building.

8. The fire alarm monitoring system of claim 7, wherein the display illustrates positions of the sensors in the building using icons;

and

wherein the display correlates the graphic illustration of the rate of change or the duration with positions of at least some of the sensors.

9. The fire alarm monitoring system of claim 7, wherein the plurality of sensors comprise any or all of:

smoke detectors, fire detectors, heat detectors, flame detectors, and carbon monoxide detectors.

10. The fire alarm monitoring system of claim 1, wherein the controller uses the fire alarm information to generate at least one of path and velocity of the fire alarm event;

and

wherein the display is adapted to graphically illustrate at least one of the path and the velocity of the fire alarm event.

11. The fire alarm monitoring system of claim 1, wherein the controller uses the fire alarm information to determine progression of the fire alarm event;

and

wherein the display is adapted to graphically illustrate projected progression of the fire alarm event.

12. The fire alarm monitoring system of claim 11, wherein the controller commands an action responsive to the determined progression.

13. The fire alarm monitoring system of claim 12, the action being at least one of:

turning on a sprinkler system, turning on a camera in the vicinity of an alarm, and turning on a camera in an area of predicted fire progression.

14. The fire alarm monitoring system of claim 11, wherein the controller predicts future trouble areas based on the determined progression of the fire alarm event;

and

wherein the controller actuates at least one notification alarm to direct occupants along a particular evacuation route away from the predicted future trouble spots.

15. The fire alarm monitoring system of claim 11, wherein the controller indicates whether fire is advancing toward hazardous material stored in the building.

16. The fire alarm monitoring system of claim 11, wherein the controller, responsive to indicated events, accesses stored procedures to be followed to mitigate the fire alarm event;

and

wherein the display is adapted to illustrate the stored procedures.

17. The fire alarm monitoring system of claim 1, wherein the display comprises a touchscreen for user input.

18. A fire alarm system comprising:

a plurality of sprinklers;

a plurality of cameras;

a plurality of notification appliances;

a plurality of fire sensors; and

a controller in communication with the sprinklers, the cameras, the notification appliances, and the fire sensors, the controller comprising logic for;

receiving fire alarm information from the fire sensors indicative of a fire alarm event;

determining a rate of change of at least one aspect of the fire alarm event based on the fire alarm information and previous fire alarm information;

determining progression of the fire alarm event based on the rate of change;

selecting at least one of the sprinklers, cameras, or notification appliances based on the progression of the fire alarm event; and

controlling at least one of the sprinklers, cameras or notification appliances based on the determined progression of the fire alarm event.

19. The fire alarm system of claim 18, wherein the logic for determining the progression of the fire alarm event comprises logic for determining an area to which the fire alarm event is projected to progress;

and

wherein the logic for controlling at least one of the sprinklers, cameras or notification appliances comprises controlling at least one sprinkler in the area.

20. The fire alarm system of claim 18, wherein the logic for determining the progression of the fire alarm event comprises logic for determining an area where the fire alarm event is projected to progress;

and

wherein the logic for selecting at least one of the sprinklers, cameras, or notification appliances based on the progression of the fire alarm event comprises logic for selecting at least one notification appliance based on the determined area.

21. The fire alarm system of claim 20, wherein the at least one selected notification appliance is located in or proximate to the determined area;

and

wherein the controller further comprising logic for generating a message indicating progression of the fire to the area and for sending the message to the at least one notification appliance selected.

22. The fire alarm system of claim 18, wherein the logic for determining the progression of the fire alarm event comprises logic for determining an area where the fire alarm event will progress;

and

wherein the logic for selecting at least one of the sprinklers, cameras, or notification appliances based on the progression of the fire alarm event comprises logic for selecting at least one camera based on the determined area.

23. The fire alarm system of claim 22, wherein the at least one camera selected is located in or proximate to the determined area;

and

wherein the controller further comprising logic for sending to a display an image or a link to the image from the selected camera.

24. A method for displaying information regarding a fire alarm event, the method comprising:

receiving fire alarm information from a plurality of fire sensors in a building, the fire alarm information indicative of a fire alarm event;

determining a rate of change or a duration of at least one aspect of the fire alarm event;

determining a graphical illustration to graphically illustrate the rate of change or the duration; and

graphically illustrating the graphic illustration of the rate of change or the duration of the at least one aspect of the fire alarm event.

25. The method of claim 24, wherein determining a rate of change or a duration comprises determining for at least one of the plurality of fire sensors a time period during which the sensor provided information indicative of the fire alarm event;

and

wherein the display is adapted to graphically illustrate the time period of at least one of the plurality of sensors.

26. The method of claim 24, wherein the rate of change comprises a rate of increase of temperature;

and

wherein graphically illustrating comprises graphically illustrating the rate of increase of the temperature of at least one of the plurality of sensors.

27. The method of claim 24, wherein the rate of change comprises a progression of the fire alarm event;

wherein determining a rate of change or a duration of at least one aspect of the fire alarm event comprises determining the progression of the fire alarm event; and

wherein graphically illustrating comprises graphically illustrating the progression of the fire alarm event.