Wildfire arrest and prevention system

Patent metadata

Field	Value
Publication number	US-9833647-B2
Application number	US-201313937217-A
Country	US
Kind code	B2
Filing date	Jul 9, 2013
Priority date	Jul 24, 2012
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

An apparatus, operations controller and methods for controlling unmanned aerial vehicles for detection, prevention and suppression of fires in a designated zone are presented. Monitored information is received and analyzed to detect a presence of a fire event or a fire risk in the designated zone. A cargo unmanned aerial vehicle is directed to a vicinity of the fire event or the fire risk and instructed to deploy a fire retardant or a fire suppressant at a location of the fire event or the fire risk, if the presence of the fire event or the fire risk is detected.

First claim

The invention claimed is:

1. Apparatus for prevention of fires in a designated zone, the apparatus comprising:
at least one monitor unmanned aerial vehicle operable to:
monitor the designated zone to provide monitored information; and
communicate the monitored information;

at least one cargo unmanned aerial vehicle operable to:
carry a cargo comprising a fire retardant;
deliver the fire retardant to a location; and
deploy the fire retardant at the location; and

an operation controller operable to:
receive the monitored information;
determine, based at least in part on the monitored information, a fire risk distribution across the designated zone, wherein the determined fire risk distribution identifies a first area of the designated zone having a greater risk of fires breaking out than a risk of fires breaking out in a second area of the designated zone;
while the designated zone is free of fires, direct one of the at least one cargo unmanned aerial vehicles from a first base location to a second base location such that, for the first area, a time from fire breakout to delivery of the fire retardant is reduced, wherein the second base location is closer to the first area than the first base location is; and
upon detection of a fire risk at a particular location and before a fire starts at the particular location, direct the cargo unmanned aerial vehicle from the second base location to the particular location and instruct the cargo unmanned aerial vehicle to deploy the fire retardant at the particular location.

2. The apparatus of claim 1 , wherein the at least one monitor unmanned aerial vehicle comprises a plurality of monitor unmanned aerial vehicles each operable to provide a persistent airborne monitoring presence of at least one of the monitor unmanned aerial vehicles.

3. The apparatus of claim 1 , wherein the apparatus is adapted to provide autonomous fire prevention.

4. The apparatus of claim 1 , wherein the operation controller is further operable to:
receive received data comprising: environmental data, surveillance data, weather data, or a combination thereof,
wherein the determining fire risk distribution is further based on the received data.

5. The apparatus of claim 1 , wherein the operation controller is further operable to analyze the monitored information to detect a presence of fire risks comprising: an accumulation of fuel for a wildfire, a tinder-dry material, a humidity lower than a predetermined threshold, or a combination thereof.

6. The apparatus of claim 5 , wherein the accumulation of fuel comprises an accumulation of combustible material comprising: leaves, dry flammable materials, or a combination thereof.

7. The apparatus of claim 1 , wherein:
the operations controller is configured to assess a land area of the designated zone to calculate a calculated flight path for the least one monitor unmanned aerial vehicle.

8. The apparatus of claim 7 , wherein the calculated flight path comprises a linear flight path based on a linear path or a circular flight path based on a circular path.

9. The apparatus of claim 8 , wherein:
the linear flight path is calculated based on dividing the land area of the designated zone into strips having a width not greater than twice a maximum detectable distance of fire risks from the at least one monitor unmanned aerial vehicle; and
the flight path is along a center line of the strips.

10. The apparatus of claim 8 , wherein:
the circular flight path is calculated based on dividing the land area of the designated zone into circular regions having a diameter not greater than four times a maximum detectable distance of fire risks from the at least one monitor unmanned aerial vehicle; and
the flight path is a circle centered on a region and of diameter twice the maximum detectable distance of fire risks from the at least one monitor unmanned aerial vehicle.

11. A method for prevention of fires in a designated zone, the method comprising:
receiving monitored information at an operation controller and from at least one monitor unmanned aerial vehicle;
determining, based at least in part on the monitored information, a fire risk distribution across the designated zone, wherein the determined fire risk distribution identifies a first area of the designated zone having a greater risk of fires breaking out than a risk of fires breaking out in a second area of the designated zone;
while the designated zone is free of fires, directing a cargo unmanned aerial vehicle from a first base location to a second base location such that, for the first area, a time from fire breakout to delivery of fire retardant is reduced, wherein the second base location is closer to the first area than the first base location is; and
upon detection of a fire risk at a particular location and before a fire starts at the particular location, directing the cargo unmanned aerial vehicle from the second base location to the particular location and instructing the cargo unmanned aerial vehicle to deploy the fire retardant at the particular location.

12. The method of claim 11 , further comprising adjusting a trajectory of the at least one monitor unmanned aerial vehicle according to the determined fire risk distribution such that the at least one monitor unmanned aerial vehicle overflies the first area of the designated zone more often than the second area of the designated zone.

13. An operations controller for controlling unmanned aerial vehicles for prevention of fires in a designated zone, the operations controller comprising:
a controller operable to:
receive monitored information corresponding to the designated zone from at least one monitor unmanned aerial vehicle;
determine, based at least in part on the monitored information, a fire risk distribution across the designated zone, wherein the determined fire risk distribution identifies a first area of the designated zone having a greater risk of fires breaking out than a risk of fires breaking out in a second area of the designated zone;
while the designated zone is free of fires, direct a cargo unmanned aerial vehicle from a first base location to a second base location such that, for the first area, a time from fire breakout to delivery of a fire retardant is reduced, wherein the second base location is closer to the first area than the first base location is; and
upon detection of a fire risk at a particular location and before a fire starts at the particular location, direct the cargo unmanned aerial vehicle from the second base location to the particular location and instruct the cargo unmanned aerial vehicle to deploy the fire retardant at the particular location.

14. The operations controller of claim 13 , wherein the controller is further operable to assess a land area of the designated zone to calculate a calculated linear flight path or a calculated circular flight path for the least one monitor unmanned aerial vehicle.

15. The operations controller of claim 14 , wherein the controller is further operable to calculate the calculated linear flight path based on dividing the land area of the designated zone into strips having a width not greater than twice a maximum detectable distance of fire risks from the at least one monitor unmanned aerial vehicle, wherein the flight path is along a center line of the strips.

16. The operations controller of claim 14 , wherein the controller is further operable to calculate the calculated circular flight path based on dividing the land area of the designated zone into circular regions having a diameter not greater than four times a maximum de

Assignees

• Boeing Co

Inventors

• Kawiecki Grzegorz M

Classifications

• A62C3/0242 Primary

  by spraying extinguishants from the aircraft (spraying from aircraft in general B64D1/16) · CPC title

• A62C3/0271

  Detection of area conflagration fires (fire alarms for forest fires G08B17/005) · CPC title

• A62C3/0228 Primary

  with delivery of fire extinguishing material by air or aircraft (fire-fighting aircraft B64D1/16) · CPC title

• B64D1/16

  Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting (jettisoning fuel B64D37/26) · CPC title

• G08B17/125

  by using a video camera to detect fire or smoke · CPC title