Parking lot fire extinguishing system and method based on unmanned aerial vehicle

Abstract

The invention relates to a high-pressure water mist fire extinguishing device connected with an unmanned aerial vehicle water spraying fire extinguishing device, which is particularly suitable for fire prevention and control in complex spaces such as parking lots. The device comprises an unmanned aerial vehicle body carrying a temperature detection camera and a high-pressure water mist fire extinguishing system, a detachable support is adopted to be connected with a high-pressure water mist spray head, and the spray head is connected with a ground high-pressure device through a multi-layer composite hose (resistant to pressure of 10-15 MPa and resistant to temperature of-40 DEG C to 260 DEG C). The temperature detection camera integrates pitching / horizontal double-axis adjustment and is matched with the fire alarm detection alarm to transmit fire scene data in real time, and the path planning module generates an obstacle avoidance flight path based on the position of an ignition point. A zoning fire extinguishing strategy is originally created, the parking lot is divided into a plurality of sub-areas to configure unmanned aerial vehicle clusters, and automatic identification and directional scheduling of fire sources are achieved. The three-dimensional maneuvering capability of the unmanned aerial vehicle is combined with the high-pressure water mist technology, the passing limitation of a traditional fire fighting truck is broken through, the fire extinguishing efficiency in narrow and small space is remarkably improved, the lightweight design (the weight of a hose is smaller than or equal to 0.8 kg / m) and the corrosion resistance characteristic (pH 2-12 environment adaptation) of the unmanned aerial vehicle are particularly matched with the complex working conditions of multiple obstacles and multiple electrical devices of a parking lot; and an efficient solution is provided for new risks such as new energy automobile charging fire.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and particularly to an intelligent fire extinguishing system and method for enclosed spaces such as underground parking lots and tunnels, which combines unmanned aerial vehicles (UAVs) and high-pressure fine water mist technology. Background Art

[0002] With the acceleration of the urbanization process, fire prevention and control in enclosed spaces or semi-enclosed areas such as parking lots, high-rise buildings, and underground spaces have become the key points and difficulties in the fire-fighting field. Traditional fire-fighting equipment (such as fire trucks and fixed sprinkler systems) has significant deficiencies in applications in narrow spaces such as parking lots: fire trucks are difficult to approach the fire source due to narrow passages or vehicle blockages; the coverage area of fixed sprinkler systems is limited, and the diffusion of water mist may be blocked due to dense vehicles. In addition, new risks such as charging fires of new energy vehicles and thermal runaway of batteries have put forward higher requirements for rapid and accurate fire extinguishing.

[0003] Most existing UAV fire extinguishing devices use ordinary water spraying or dry powder fire extinguishing methods, which have problems such as large water stain pollution, low fire extinguishing efficiency, and difficulty in meeting the integration requirements of high-pressure fine water mist systems. Therefore, there is an urgent need for a UAV fire extinguishing device with both flexible mobility, high fire extinguishing ability, and environmental adaptability. Summary of the Invention

[0004] The purpose of the present invention is to provide a solution for the deep integration of a high-pressure fine water mist fire extinguishing device and a UAV, which realizes rapid response and accurate fire extinguishing in complex environments and reduces secondary damage to non-fire areas through lightweight structural design, intelligent fire source positioning, and zoning scheduling strategies, aiming at the defects of the existing technology.

[0005] To achieve the above purpose, the present invention proposes a parking lot fire extinguishing system and method based on a UAV, which is characterized in that: it includes a UAV body and a high-pressure fine water mist fire extinguishing device; a temperature detection camera is arranged on the upper part of the body of the UAV body, and two brackets are symmetrically arranged at the bottom of the body of the UAV body; a high-pressure fine water mist nozzle is detachably connected between the two brackets, the high-pressure fine water mist nozzle is connected to the UAV fire storage and transportation cabin through a hose, and the UAV fire storage and transportation cabin is connected to the high-pressure fine water mist fire extinguishing device.

[0006] Furthermore, installation screw holes are provided at the bottom of the UAV body, and the brackets are detachably connected through fastening bolts at corresponding positions.

[0007] Furthermore, the temperature detection camera is installed on the UAV body through an adjustment bracket, and the adjustment bracket includes pitch adjustment and horizontal rotation.

[0008] Furthermore, the working pressure range of the high-pressure fine water mist fire extinguishing device is 10 - 15 MPa.

[0009] Furthermore, the UAV body is equipped with a path planning module that can preset a zoned fire extinguishing strategy and automatically generate an obstacle avoidance flight route according to the location of the ignition point.

[0010] Furthermore, the temperature detection camera is configured with a temperature sensing module and an image transmission module that can transmit the fire field temperature data and image information in real time.

[0011] Furthermore, the zoned fire extinguishing strategy specifically includes: dividing the operation area into several sub-areas, configuring a dedicated UAV cluster for each sub-area, automatically identifying the sub-area to which the fire source belongs, and dispatching the corresponding UAVs.

[0012] Furthermore, the hose is a multi-layer composite structure, including a polyurethane inner lining layer, a reinforcing layer woven with aramid fiber and ultra-high molecular weight polyethylene, and an outer protective layer blended with chloroprene rubber and silicone rubber, arranged from the inside to the outside. The working pressure is 10 - 15 MPa, the temperature resistance is -40°C to +260°C, it is resistant to pH 2 - 12 corrosion environment, and the weight ≤ 0.8 kg / m.

[0013] Furthermore, the UAV fire fighting storage and transportation compartment is provided with a UAV charging interface, hose storage, and environmental control.

[0014] Adopting the above technical solutions, the beneficial effects of the present invention are as follows: (1) High-efficiency and accurate fire extinguishing: High-pressure fine water mist achieves high coverage efficiency under limited load. The water mist particles are small and the vaporization speed is fast, reducing water damage to vehicles and electrical equipment in the parking lot. (2) Adaptability to complex environments: The lightweight hose and detachable bracket design ensure that the UAV can flexibly pass through low-altitude obstacles in the parking lot; the corrosion-resistant hose adapts to the acid-base environment around the charging pile. (3) Intelligent cluster collaboration: The combination of zoned dispatching strategy and obstacle avoidance path planning solves the problem of fire source positioning caused by multi-vehicle occlusion and shortens the response time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic plan view of UAV fire fighting in the underground parking lot of the present invention;

[0016] Figure 2 It is a schematic structural view of the UAV of the present invention;

[0017] Figure 3 It is a schematic sectional layered structure view of the hose of the present invention.

[0018] In the figure: UAV body - 1, bracket - 11, bolt - 111, screw hole - 12, temperature detection camera - 13, adjustment bracket - 131, high - pressure fine water mist fire extinguishing device - 2, hose - 3, inner lining layer - 31, reinforcement layer - 32, outer protective layer - 33, high - pressure fine water mist nozzle - 4, UAV fire - fighting storage and transportation compartment - 5, vehicle - 6. Detailed implementation manners

[0019] The following combines the drawings in the embodiments of the present disclosure to clearly and comprehensively elaborate the technical solutions therein. It should be noted that the embodiments described herein are only a part of the present disclosure, not all of them. Based on the embodiments of the present disclosure, if those of ordinary skill in the art obtain all other embodiments without creative work, these also fall within the protection scope of the present disclosure.

[0020] Please refer to Figure 1 , a parking lot fire - extinguishing system and method based on a UAV provided by the present invention includes a UAV body 1 and a high - pressure fine water mist fire - extinguishing device 2. A temperature detection camera 13 is installed on the upper part of the body of the UAV body 1 for real - time monitoring of the fire field temperature and image information; two brackets 11 are symmetrically arranged at the bottom of the body, and a high - pressure fine water mist nozzle 4 is connected between the brackets 11. The UAV body 1 is equipped with a path planning module, which generates an obstacle - avoidance route in combination with the obstacles on the route.

[0021] Please refer to Figure 2 , there is an installation screw hole 11 at the bottom of the UAV body 1, and the corresponding position of the bracket 11 is detachably connected through a fastening bolt 111, which is convenient for installation, disassembly and maintenance.

[0022] Please refer to Figure 3 , the hose 3 is a multi - layer composite structure, which is, from the inside to the outside in turn: a polyurethane inner lining layer 31 (providing sealing and corrosion resistance), a reinforcement layer 32 made of a mixed braid of aramid fiber and ultra - high - molecular - weight polyethylene (providing high strength and pressure resistance), and an outer protective layer 33 made of a blend of chloroprene rubber and silicone rubber (providing high - temperature resistance and wear resistance). The working pressure of the hose 3 is 10 - 15 MPa, the temperature tolerance range is - 40°C to + 260°C, it is resistant to a pH 2 - 12 corrosion environment, and the weight ≤ 0.8 kg / m.

[0023] Taking a typical underground parking lot fire as an example: Step 1, fire detection: The temperature of a certain charging parking space is abnormal, and it is confirmed that the fire source is in sub - area 1 of area A. Step 2, drone dispatching: When a drone encounters an obstacle during flight, the system will prioritize dispatching the nearest drone, and plan the shortest safe route based on the real-time obstacle distribution map, remaining endurance, and temperature sensor data (avoiding high temperature areas above 60°C). Through the image transmission mode, the drone uses a high-definition camera to scan the environment ahead in real time, identify obstacle outlines and potential dangers (such as cars, people, or moving objects), and dynamically adjust the flight altitude and direction based on the visual algorithm. If a complex obstacle group is detected, the system will generate a three-dimensional obstacle avoidance path based on the real-time image, giving priority to areas with larger obstacle gaps or lower temperatures, while ensuring a safe distance (≥1 meter), bypassing the obstacle with the shortest straight-line distance, and continuously transmitting the image back to the control end for manual review to ensure efficient and reliable routes. Step three, fire extinguishing operation: the temperature detection camera 13 is equipped with a temperature sensing module and an image transmission module, which can transmit the fire scene temperature data and image information in real time, and control the UAV body 1 flight system to fly to a height of 2-3 meters above the fire source, and the high-pressure fine water mist fire extinguishing device 2 is started, and the nozzle 4 sprays fine water mist at a pressure of 15MPa to extinguish the fire. The position of the UAV is adjusted according to the fire, and the height is lowered to the chassis of the car 6, and the chassis of the car 6 is sprayed with fine water mist to extinguish the fire. During the fire extinguishing process, the temperature sensing module and the image transmission module feedback the fire scene data in real time to ensure that the fire source is completely extinguished. Step 4: Collaborative supplement: If the fire expands, the system will automatically dispatch drones in adjacent sub-areas to work together until the fire is lifted.

Claims

1. A parking lot fire extinguishing system and method based on drones, characterized by: The invention comprises an unmanned aerial vehicle body (1) and a high-pressure fine water mist fire extinguishing device (2); the unmanned aerial vehicle body (1) is placed in an unmanned aerial vehicle fire storage and transportation compartment (5), and a temperature detection camera (13) is arranged on the upper part of the unmanned aerial vehicle body (1), and two brackets (11) are symmetrically arranged on the bottom of the unmanned aerial vehicle body (1); a high-pressure fine water mist nozzle (4) is detachably connected between the two brackets (11), and the high-pressure fine water mist nozzle (4) is connected to the unmanned aerial vehicle fire storage and transportation compartment (5) through a hose (3), and the unmanned aerial vehicle fire storage and transportation compartment (5) is connected to the high-pressure fine water mist fire extinguishing device (2).

2. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The bottom of the drone body (1) is provided with a mounting screw hole (12), and a corresponding position of the bracket (11) is connected to the bracket (11) in a detachable manner by means of a fastening bolt (111).

3. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The temperature detection camera (13) is mounted on the drone body (1) via an adjustment bracket (131), and the adjustment bracket (131) includes pitch adjustment and horizontal rotation.

4. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The working pressure range of the high-pressure water mist fire extinguishing device (2) is 10-15 MPa.

5. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The drone body (1) is equipped with a path planning module capable of presetting a zoned fire extinguishing strategy and automatically generating an obstacle avoidance flight route according to the location of the fire point.

6. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The temperature detection camera (13) is equipped with a temperature sensing module and an image transmission module capable of transmitting fire scene temperature data and image information in real time.

7. The parking lot fire extinguishing system and method based on drone according to claim 1, characterized in that: The zoning fire-fighting strategy specifically includes: dividing the operation area into several sub-areas, configuring a dedicated drone cluster for each sub-area, automatically identifying the sub-area to which the fire source belongs and dispatching the corresponding drone.

8. The parking lot fire extinguishing system and method based on drone according to claim 1 is characterized by: The hose (3) is a multi-layer composite structure, comprising a polyurethane lining layer (31), a reinforcement layer (32) of aramid fiber and ultra-high molecular weight polyethylene, and an outer protective layer (33) of chloroprene rubber and silicone rubber, which are arranged in sequence from the inside to the outside. The hose has a working pressure of 10-15 MPa, a temperature tolerance of -40°C to +260°C, a pH 2-12 corrosion environment resistance, and a weight of ≤0.8 kg / m.

9. The parking lot fire extinguishing system and method based on drone according to claim 1, characterized in that: The drone firefighting storage and transportation cabin (5) is provided with a drone charging interface, hose storage and environmental control.

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