Time-dependent classification and signaling of evacuation route safety

• US 20070279210A1
• Filed: 06/06/2006
• Published: 12/06/2007
• Est. Priority Date: 06/06/2006
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Li, Qing, Plocher, Thomas A.
• Granted Patent: US 7,683,793 B2
• Time in Patent Office: Days
• US Class Current: 340/506
• CPC Class Codes: G08B 7/062 indicating emergency exits
• CPC Class Codes: G08B 7/066 guiding along a path, e.g. evacuation path lighting strip

Abstract

An adaptive evacuation system and method for providing a safety route to evacuees. Active smoke and heat detector information can be obtained from a fire panel. Routes and exits in proximity to the active detectors are assumed to be unsafe and closed for use in evacuation. Evacuation planning is accomplished with the remaining “safe” routes. The progression of fire and smoke and the time-dependent degradation of evacuation route safety associated with progression of fire and smoke can be predicted and initial classification and signaling of route safety can be performed. As the fire progresses, the initial time-dependent classifications are updated and initially safe routes are reclassified as unsafe and then evacuation directions are modified.

Claims

1. An adaptive evacuation method, comprising:

automatically generating data concerning a hazard from a plurality of hazard detectors monitoring a region of interest; and

predicting how said hazard propagates over time from a current location of said hazard in order to evaluate, classify and communicate at least one safety evacuation route to at least one evacuee, thereby providing a time-dependent classification and signaling of said at least one evacuation route.

2. The method of claim 1 further comprising:

evaluating, predicting and classifying said at least one safety evacuation route utilizing a situation assessor.

3. The method of claim 1 further comprising:

computing at least one evacuation plan based on said at least one safety evacuation route utilizing a route planner.

4. The method of claim 3 further comprising:

providing a plurality of directional devices for communicating with said at least one evacuee within said region of interest.

5. The method of claim 4 further comprising:

controlling a signal concerning said at least one safety evacuation route based on said at least one evacuation plan and a location of said plurality of directional devices.

6. The method of claim 1 wherein said at least one safety evacuation route is obtained using a fire propagation model, which is used for predicting a fire spread path over a selected period of time.

7. The method of claim 1, wherein said at least one safety evacuation route is obtained using a smoke propagation model, which is used for predicting a smoke spread path over a selected period of time.

8. The method of claim 1, wherein said at least one safety evacuation route is obtained using a plurality of results from said plurality of hazard detectors, which is used for detecting a presence of smoke.

9. The method of claim 1, wherein said at least one safety evacuation route is obtained using a plurality of results from said plurality of hazard detectors, which is used for detecting a presence of a fire.

10. An adaptive evacuation system, comprising:

a data-processing apparatus;

a module executed by said data-processing apparatus, said module and said data-processing apparatus being operable in combination with one another to;

automatically generate data concerning a hazard from a plurality of hazard detectors monitoring a region of interest; and

predict how said hazard propagates over time from a current location of said hazard in order to evaluate, classify and communicate at least one safety evacuation route to at least one evacuee, thereby providing a time-dependent classification and signaling of said at least one evacuation route.

11. The system of claim 10 wherein said data-processing apparatus and said module are further operable in combination with one another to evaluate, predict and classify said at least one safety evacuation route utilizing a situation assessor.

12. The system of claim 10 wherein said data-processing apparatus and said module are further operable in combination with one another to compute at least one evacuation plan based on said at least one safety evacuation route utilizing a route planner.

13. The system of claim 12 further comprising:

a plurality of directional devices for communicating with said at least one evacuee within said region of interest.

14. The system of claim 13 wherein said data-processing apparatus and said module are further operable in combination with one another to control a signal concerning said at least one safety evacuation route based on said at least one evacuation plan and a location of said plurality of directional devices.

15. The system of claim 10 wherein said at least one safety evacuation route is obtained using a fire propagation model, which is used for predicting a fire spread path over a selected period of time.

16. The system of claim 10 wherein said at least one safety evacuation route is obtained using a smoke propagation model, which is used for predicting a smoke spread path over a selected period of time.

17. The system of claim 10 wherein said at least one safety evacuation route is obtained using a plurality of results from said plurality of hazard detectors, which is used for detecting a presence of smoke.

18. The system of claim 10 wherein said at least one safety evacuation route is obtained using a plurality of results from said plurality of hazard detectors, which is used for detecting a presence of a fire.

20. The system of claim 10, further comprising:

a controller for controlling at least one route signal based on said at least one safety evacuation plan and a location of said plurality of directional devices.

19. An adaptive evacuation system, comprising:

a plurality of detectors for monitoring a region of interest;

a situation assessor for evaluating, predicting and classifying at least one safety route based on data obtained from said plurality of detectors;

a route planner for computing at least one safety evacuation plan based on said at least one safety evacuation route; and

a plurality of directional devices for communicating with a plurality of evacuees in said region based on data obtained from said route planner, thereby providing a time-dependent classification and signaling of said at least one evacuation route.