Multifunctional unmanned aerial vehicle capable of keeping long-time endurance

Abstract

The invention provides a multifunctional unmanned aerial vehicle capable of keeping long-time endurance, and relates to the technical field of unmanned aerial vehicles, the multifunctional unmanned aerial vehicle comprises an unmanned aerial vehicle body, a fuel adapter which is a three-way piece is installed below the unmanned aerial vehicle body, and the top outlet end of the fuel adapter is communicated with an internal fuel tank of the unmanned aerial vehicle body; and between every two adjacent groups of unmanned aerial vehicles, the corresponding fuel adapters are mounted in series by virtue of a series hose, and the adjacent unmanned aerial vehicles are mounted in series by virtue of the series hose, so that the efficient series conveying of the fuel is synchronously achieved, and the safety of the unmanned aerial vehicles is improved during the application of disaster relief and emergency rescue. The adjacent unmanned aerial vehicles can be continuously and stably kept in the operation state, long-time uninterrupted operation is achieved, and the problems that the endurance time of an existing unmanned aerial vehicle is short, the unmanned aerial vehicle needs to return for charging or fuel adding at set intervals in the flight task process, and long-time endurance application is difficult to achieve are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a multifunctional unmanned aerial vehicle capable of maintaining a long-term flight endurance. Background Art

[0002] A drone is an unmanned aircraft that is controlled by a radio remote control device and a self-contained program control device. At present, drones can be roughly divided into two types: electric drive and fuel drive. However, both types of drones have the defect of short flight time. During the flight mission, it is necessary to return to the base every once in a while to charge or add fuel, which makes it difficult to achieve long-term flight application.

[0003] In emergency situations such as disaster relief, the adverse effects of this short battery life are further magnified.

[0004] For example, in outdoor nighttime lighting rescue scenarios, continuous, stable and sufficient lighting is crucial for the smooth implementation of rescue work. However, due to the limited flight time of drones, they cannot provide lighting in the air for a long time, which greatly increases the difficulty of rescue workers working in the dark and seriously affects the progress of rescue. At the same time, in firefighting operations, drones are also unable to maintain long-term flight time and are difficult to coordinate to achieve long-term firefighting work. Frequent returns to add water sources will not only consume a lot of time, but may also cause the fire to spread further in the process, posing a greater threat to people's lives and property safety. Summary of the invention

[0005] The present invention relates to a multifunctional UAV capable of maintaining a long-term flight time, which solves the defect of the existing UAV having a short flight time. During the flight mission, the UAV needs to return to the base for charging or adding fuel at regular intervals, making it difficult to achieve a long-term flight time application.

[0006] The present invention provides a multifunctional UAV capable of maintaining a long endurance, specifically comprising: a UAV, wherein a fuel adapter as a three-way piece is installed below the UAV, and the top outlet end of the fuel adapter is connected to an internal fuel tank of the UAV; Between each two adjacent groups of drones, the corresponding fuel adapters are installed in series with the help of a series hose.

[0007] Furthermore, a pipe clamp is welded and installed on the bottom end surface of the UAV through a connecting plate, and a supporting tripod is welded on both sides of the bottom end surface of the UAV; a fuel input solenoid valve is installed on the left inlet end flange of the fuel adapter, and a fuel output solenoid valve is installed on the right outlet end flange of the fuel adapter; a fuel level sensor is installed inside the fuel tank of the UAV; a hose is fixedly installed at both ends of the series hose, and a matching induction connecting pipe is flange-sealed on both hoses; when two adjacent groups of UAVs are installed in series through the series hoses, the two matching induction connecting pipes on the series hoses are respectively connected to the fuel input solenoid valve on one group of UAVs and the fuel output solenoid valve on the other group of UAVs by flange-sealing.

[0008] Furthermore, an external annular block a is fixedly installed on the outer circumference of the series hose adjacent to the hose portion, and three limit sockets are provided in a circular array on the side end plane of the external annular block a; an external annular block b is fixedly installed on the middle portion of the outer circumference of the mating induction connecting tube, and three limit plugs are fixedly installed in a circular array on the side end plane of the external annular block b, and the three limit plugs are respectively slidably plugged into and matched with the three limit sockets; a spring connector is sleeved on the outer circumference of the three limit plugs, one end of the spring connector is fixedly connected to the side end plane of the external annular block a, and the other end of the spring connector is fixedly connected to the side end plane of the external annular block b; when the spring connector is in a natural state, the hose is in an unstretched state.

[0009] Furthermore, an extension block is arranged on the side end plane of the external annular block a, and an induction slot penetrating the external annular block a is opened on the side end plane of the extension block; a plug-in piece is fixedly installed on the side end plane of the external annular block b relative to the induction slot; the plug-in piece is slidably inserted into the inside of the induction slot.

[0010] Furthermore, a sensing groove is provided on the inner side of the sensing slot, and a proximity switch is fixedly installed inside the sensing groove; a mating sensing plug-in piece that can cooperate with the proximity switch is fixedly installed at the tail end of the plug-in piece; when the spring connector is in a natural state, the mating sensing plug-in piece is staggered from the sensing groove, and at this time, the mating sensing plug-in piece is not within the sensing range of the proximity switch.

[0011] Furthermore, the drone is also provided with a microcontroller and a GPS positioning module electrically connected to it, and the microcontroller is connected to the wireless network transmission of the monitoring center through a 5G module; a searchlight is fixedly installed on the rear sides of the two supporting tripods, and the searchlight is electrically connected to the microcontroller.

[0012] Furthermore, the fuel input solenoid valve, fuel output solenoid valve and fuel level sensor are all electrically connected to the microcontroller; when the fuel level sensor detects that the liquid level in the fuel tank has not reached a specified threshold, the fuel level sensor feedback signal is given to the microcontroller, and the microcontroller controls the fuel input solenoid valve and the fuel output solenoid valve to be in an open state; and when the fuel level sensor detects that the liquid level in the fuel tank has reached a specified threshold, the fuel level sensor feedback signal is given to the microcontroller, and the microcontroller controls the fuel input solenoid valve and the fuel output solenoid valve to be in a closed state.

[0013] Furthermore, when the mating sensing plug corresponds to the position of the sensing slot, the mating sensing plug is within the sensing range of the proximity switch, and the proximity switch feedback signal is given to the microcontroller. The microcontroller wirelessly transmits the signal to the monitoring center through the 5G module, and attaches the positioning data of the GPS positioning module.

[0014] The present invention provides a multifunctional drone capable of maintaining long-term flight time, which has the following beneficial effects: The present invention uses a series hose to realize the series installation between adjacent drones, so as to achieve efficient series transportation of fuel simultaneously, which is beneficial to the application of disaster relief and emergency rescue, so that adjacent drones can be kept in a running state continuously and stably, and long-term uninterrupted operation can be achieved without returning to add fuel, thereby meeting the urgent needs for long-term rescue such as outdoor night lighting rescue. In addition, based on the series transportation function, the present application can connect a water pipe to transport water to the location where the fire occurs, on the one hand, ensuring the long-term take-off and endurance of the drone, and providing stable air support for continuous firefighting operations; on the other hand, it also ensures that the water used for firefighting is always sufficient, thereby collaboratively realizing long-term firefighting operations and greatly improving the efficiency of firefighting. Further, the drone of the present invention can maintain the fuel in a relatively full state through the series transportation of fuel, so the fuel tank provided for it does not need to have an excessively large capacity, and the smaller fuel tank not only has a significant advantage in space occupancy, but more importantly, it can greatly reduce its own weight, and the reduction in the weight of the fuel tank will directly affect the flight performance of the drone, greatly reducing the energy consumption of the drone during flight, and bringing significant benefits to the drone in terms of flight efficiency and flexibility.

[0015] The present invention monitors and senses the state of the serial hose. When the interval distance between the flight states of two adjacent groups of drones suddenly becomes farther, or the serial hose accidentally touches a foreign object and is thereby pulled, it will first be expanded based on the synchronous stretching of the hose, so as to temporarily compensate for the size change of the current serial hose when it is pulled, thereby effectively preventing the serial hose from being pulled and damaged. Then, as the distance between the external annular block a and the external annular block b increases synchronously, the position of the mating sensing plug will be changed synchronously to be within the sensing range of the proximity switch. Based on the sensitive sensing feedback of the proximity switch, it can wirelessly transmit signals to the monitoring center in the first place, and is accompanied by accurate positioning data, so that the staff can be informed of the situation in a timely manner so that they can quickly perform operations and processes, thereby effectively preventing fuel leakage caused by the pulling and damage of the serial hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture: Figure 1 A schematic diagram of the front end axonometric structure of the present application is shown; Figure 2 The bottom axonometric structure schematic diagram of the present application is shown; Figure 3 A schematic diagram of the rear end axonometric structure of the present application is shown; Figure 4 The top axonometric structure schematic diagram of the present application in the split state is shown; Figure 5 A schematic diagram of the axonometric structure of the bottom end in the disassembled state of the present application is shown; Figure 6 It shows a schematic structural diagram of the hose and the matching induction connecting pipe of the present application in a separated state; Figure 7 It shows a schematic cross-sectional structure diagram of the sensing slot portion of the present application in a sealed installation state of the hose and the matching sensing connecting pipe; Figure 8 A rear view structural diagram of the present application is shown; Fig. 9 shows a system block diagram of the present application; Reference numerals list 1. UAV; 101. Connecting plate; 102. Supporting tripod; 103. Searchlight; 105. GPS positioning module; 106. 5G module; 107. Monitoring center; 108. Microcontroller; 2. Pipe clamps; 3. Fuel adapter; 301. Fuel input solenoid valve; 302. Fuel output solenoid valve; 306. Fuel level sensor; 4. Series hose; 401. External annular block a; 402. Hose; 403. Extension block; 404. Limiting jack; 405. Sensing slot; 406. Matching sensing connecting pipe; 407. External annular block b; 408. Limiting rod; 409. Spring connector; 4010. Connecting piece; 4011. Matching sensing piece; 4012. Sensing slot; 4013. Proximity switch. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Please refer to Figures 1 to 9 : The present invention proposes a multifunctional drone that can maintain a long endurance, comprising: a drone 1, which is a drone driven by fuel (oil / gas); a fuel adapter 3 as a three-way piece is installed below the drone 1, and the top outlet end of the fuel adapter 3 is connected to the internal fuel tank of the drone 1; between each two adjacent groups of drones 1, the corresponding fuel adapters 3 are installed in series with the help of a series hose 4. The fuel can be existing fuel oil or gas. Through the fuel adapter 3 and the series hose 4, more than two drones 1 can be connected in series to form a drone group to achieve long-term uninterrupted operation.

[0021] In the embodiment of the present invention, a pipe clamp 2 is welded and installed on the bottom end surface of the drone 1 through a connecting plate 101, and a supporting tripod 102 is welded on both sides of the bottom end surface of the drone 1; a fuel input solenoid valve 301 is installed on the left inlet end flange of the fuel adapter 3, and a fuel output solenoid valve 302 is installed on the right outlet end flange of the fuel adapter 3; a fuel level sensor 306 is installed inside the fuel tank of the drone 1; a hose 402 is fixedly installed at both ends of the series hose 4, and a matching induction connecting pipe 406 is installed on both hoses 402 through flanges; two adjacent hoses 402 are sealed with a matching induction connecting pipe 406; When the groups of drones 1 are installed in series through the series hose 4, the two matching induction connecting tubes 406 on the series hose 4 are respectively connected to the fuel input solenoid valve 301 on one group of drones 1 and the fuel output solenoid valve 302 on the other group of drones 1 by flange sealing installation; the drone 1 is also provided with a microcontroller 108 and a GPS positioning module 105 electrically connected thereto, and the microcontroller 108 is connected to the monitoring center 107 wireless network transmission through the 5G module 106; a searchlight 103 is fixedly installed on the rear sides of the two supporting tripods 102, and the searchlight 103 is electrically connected to the microcontroller 108.

[0022] In the embodiment of the present invention, an external annular block a401 is fixedly installed on the outer circumference of the series hose 4 adjacent to the hose 402, and three limiting sockets 404 are provided in a circular array on the side end plane of the external annular block a401; an external annular block b407 is fixedly installed on the middle part of the outer circumference of the induction connecting tube 406, and three limiting plug rods 408 are fixedly installed in a circular array on the side end plane of the external annular block b407, and the three limiting plug rods 408 are respectively slidably plugged into the three limiting sockets 404; a spring connector 409 is sleeved on the outer circumference of the three limiting plug rods 408, one end of the spring connector 409 is fixedly connected to the side end plane of the external annular block a401, and the other end of the spring connector 409 is fixedly connected to the side end plane of the external annular block b407; in the natural state of the spring connector 409, the hose 402 In an unstretched state; an extension block 403 is provided on the side end plane of the external annular block a401, and a sensing slot 405 that penetrates the external annular block a401 is opened on the side end plane of the extension block 403; a plug-in piece 4010 is fixedly installed on the side end plane of the external annular block b407 relative to the sensing slot 405; the plug-in piece 4010 is slidably plugged into the inside of the sensing slot 405; a sensing groove 4012 is opened on the inner side of the sensing slot 405, and a proximity switch 4013 is fixedly installed inside the sensing groove 4012; a matching sensing plug-in piece 4011 that can cooperate with the proximity switch 4013 for induction is fixedly installed on the tail end of the plug-in piece 4010; when the spring connector 409 is in a natural state, the matching sensing plug-in piece 4011 is staggered from the sensing slot 4012, and at this time, the matching sensing plug-in piece 4011 is not within the sensing range of the proximity switch 4013.

[0023] In the embodiment of the present invention, the fuel input solenoid valve 301, the fuel output solenoid valve 302 and the fuel level sensor 306 are all electrically connected to the microcontroller 108; when the fuel level sensor 306 detects that the liquid level in the fuel tank does not reach the specified threshold, the fuel level sensor 306 feedbacks a signal to the microcontroller 108, and the microcontroller 108 controls the fuel input solenoid valve 301 and the fuel output solenoid valve 302 to be in an open state, and when the fuel level sensor 306 detects that the liquid level in the fuel tank reaches the specified threshold, the fuel level sensor 306 feedbacks a signal to the microcontroller 108, and the microcontroller 108 controls the fuel input solenoid valve 301 and the fuel output solenoid valve 302 to be in an open state. 06 feedback signal is given to the microcontroller 108, and the microcontroller 108 controls the fuel input solenoid valve 301 and the fuel output solenoid valve 302 to be in a closed state; when the matching sensing plug 4011 corresponds to the position of the sensing slot 4012, the matching sensing plug 4011 is within the sensing range of the proximity switch 4013, and the proximity switch 4013 feedback signal is given to the microcontroller 108, and the microcontroller 108 wirelessly transmits the signal to the monitoring center 107 through the 5G module 106, and attaches the positioning data of the GPS positioning module 105.

[0024] The working principle of this embodiment: When disaster relief, such as firefighting, nighttime lighting, etc., requires the cooperation of multiple groups of drones 1 for takeoff, before takeoff, each adjacent group of drones 1 is installed in series through a series hose 4, and the two matching induction connecting pipes 406 on the series hose 4 are respectively connected to the fuel input solenoid valve 301 on one group of drones 1 and the fuel output solenoid valve 302 on another group of drones 1 through flange sealing installation, and a fuel delivery hose is installed through a flange sealing on the fuel input solenoid valve 301 on the rearmost drone 1, and the fuel delivery hose is connected to the oil pump flange sealing installation for delivering fuel; After multiple groups of drones 1 take off, the oil pump for delivering fuel inputs fuel into the fuel adapter 3 through the fuel delivery hose and the fuel input solenoid valve 301, and based on the fuel output solenoid valve 302, the hose 402 and the serial hose 4, the fuel is sequentially input into the fuel tanks of the adjacent drones 1 to achieve serial delivery of fuel, so as to ensure that each group of drones 1 has sufficient fuel supply during the flight application process to ensure long-term endurance without returning to add fuel every once in a while. When night lighting is used, the microcontroller 108 controls the searchlight 103 to start to achieve night lighting, and because the drone 1 is delivered via the serial fuel delivery Long-term endurance can be achieved, so the long-term start-up lighting application of the searchlight 103 can also be guaranteed; further, the fuel level sensor 306 in the fuel tank detects the liquid level of the fuel in the fuel tank in real time. When the fuel level sensor 306 detects that the liquid level in the fuel tank reaches the specified threshold, it means that the fuel in the fuel tank of the current drone 1 and the fuel tank of the drone 1 adjacent to the front side have reached the fuel addition capacity standard. Therefore, at this time, the fuel level sensor 306 gives a feedback signal to the microcontroller 108, so that the microcontroller 108 controls the fuel input solenoid valve 301 and the fuel output solenoid valve 302 to be in a closed state to avoid excessive fuel addition; During firefighting, the firefighting water pipe connected to the fire truck or other water source delivered by the water pump is sequentially fastened and fixed on the pipe clamps 2 of all the drones 1, and the nozzle end of the firefighting water pipe is fixedly installed on the pipe clamp 2 of the drone 1 located at the front, so as to realize the serial delivery of the water source, which is conducive to the drone 1 to have sufficient water supply during the flight firefighting application process, so as to ensure long-term firefighting operation, without returning to add water every time interval; When two adjacent groups of drones 1 are flying, they need to maintain a certain distance to ensure that the connection state of the serial hose 4 is not affected. When the distance between the two adjacent groups of drones 1 suddenly becomes farther or the serial hose 4 touches an external object and is pulled, the external annular block a401 will move along the limiting plug rod 408 through the limiting plug hole 404 under the synchronous pulling of the serial hose 4. At this time, the distance between the external annular block a401 and the external annular block b407 becomes larger, the spring connector 409 is stretched, and the hose 402 will also be stretched and expanded synchronously to temporarily compensate for the size change of the current serial hose 4 when being pulled, so as to avoid the serial hose 4 being pulled and damaged. When the external annular block a401 and the external annular block When the spacing between b407 increases, the connector 4010 and the mating sensing insert 4011 will also slide synchronously along the sensing slot 405, so that the mating sensing insert 4011 that was not originally corresponding to the position of the sensing slot 4012 moves to a state corresponding to its position. At this time, the mating sensing insert 4011 is within the sensing range of the proximity switch 4013. The proximity switch 4013 gives a feedback signal to the microcontroller 108, and the microcontroller 108 wirelessly transmits the signal to the monitoring center 107 through the 5G module 106, and attaches the positioning data of the GPS positioning module 105, so that the staff can be informed in time and take timely action to avoid the series hose 4 from being pulled and damaged, which may cause fuel leakage.

[0025] The present invention adopts a fuel-driven UAV as a UAV application for realizing energy series connection, because compared with an electric-driven UAV, the fuel-driven UAV is used to realize energy series connection, so that the fuel can be kept in a relatively full state, so the fuel tank provided for it does not need to have an excessively large capacity, and a smaller fuel tank not only has a significant advantage in space occupancy, but more importantly, it can greatly reduce its own weight. The reduction in the weight of the fuel tank will directly affect the flight performance of the UAV, greatly reducing the energy consumption of the UAV during flight, and bringing significant benefits to the UAV in terms of flight efficiency and flexibility. If an electric-driven UAV is used to realize energy series connection, because the voltage corresponding to the motor is relatively low, if the power needs to be guaranteed, relatively thick wires or buck-boost components are required on the UAV, which will greatly increase the weight and bring many adverse effects to the flight of the UAV, such as reducing the endurance and reducing the payload that can be carried.

[0026] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0027] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0028] The above are only specific implementation methods of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be covered by the protection scope of the present disclosure.

Claims

1. A multifunctional drone capable of maintaining a long endurance, comprising a drone (1), characterized in that: A three-way fuel adapter (3) is installed below the drone (1), and the top outlet of the fuel adapter (3) is connected to the internal fuel tank of the drone (1); between each two adjacent groups of drones (1), the corresponding fuel adapters (3) are installed in series by means of a series hose (4).

2. A multifunctional UAV capable of maintaining long-term flight time according to claim 1, characterized in that: The bottom end surface of the drone (1) is welded with a pipe clamp (2) through a connecting plate (101), and a supporting tripod (102) is welded on both sides of the bottom end surface of the drone (1); a fuel input solenoid valve (301) is flange-sealed and installed on the left inlet end of the fuel adapter (3), and a fuel output solenoid valve (302) is flange-sealed and installed on the right outlet end of the fuel adapter (3); a fuel level sensor (306) is installed inside the fuel tank of the drone (1); a hose (402) is fixedly installed at both ends of the series hose (4), and a matching induction connecting pipe (406) is flange-sealed and installed on both hoses (402); when two adjacent groups of drones (1) are installed in series through the series hose (4), the two matching induction connecting pipes (406) on the series hose (4) are flange-sealed and installed and connected to the fuel input solenoid valve (301) on one group of drones (1) and the fuel output solenoid valve (302) on the other group of drones (1), respectively.

3. A multifunctional UAV capable of maintaining long-term flight time according to claim 2, characterized in that: An external annular block a (401) is fixedly mounted on the outer circumference of the series hose (4) adjacent to the hose (402), and a total of three limit plug holes (404) are provided in an annular array on the side end plane of the external annular block a (401); an external annular block b (407) is fixedly mounted on the middle part of the outer circumference of the matching induction connecting tube (406), and a total of three limit plug rods (408) are fixedly mounted on the side end plane of the external annular block b (407) in an annular array. The insert rods (408) are respectively slidably plugged into the three limiting plug holes (404); a spring connector (409) is sleeved on the outer circumference of each of the three limiting insert rods (408); one end of the spring connector (409) is fixedly connected to the side end plane of the external annular block a (401), and the other end of the spring connector (409) is fixedly connected to the side end plane of the external annular block b (407); when the spring connector (409) is in a natural state, the hose (402) is in an unstretched state.

4. A multifunctional UAV capable of maintaining long-term flight time according to claim 3, characterized in that: An extension block (403) is arranged on the side end plane of the external annular block a (401), and a sensing slot (405) penetrating the external annular block a (401) is opened on the side end plane of the extension block (403); a plug-in sheet (4010) is fixedly mounted on the side end plane of the external annular block b (407) relative to the sensing slot (405); the plug-in sheet (4010) is slidably plugged into the inside of the sensing slot (405).

5. The multifunctional UAV capable of maintaining long-term flight time according to claim 4, characterized in that: The inner side surface of the sensing slot (405) is provided with a sensing slot (4012), and a proximity switch (4013) is fixedly installed inside the sensing slot (4012); a matching sensing plug (4011) that can be matched with the proximity switch (4013) is fixedly installed at the rear end of the plug-in piece (4010); when the spring connector (409) is in a natural state, the matching sensing plug (4011) and the sensing slot (4012) are offset in position, and at this time, the matching sensing plug (4011) is not within the sensing range of the proximity switch (4013).

6. The multifunctional UAV capable of maintaining long-term flight time according to claim 5, characterized in that: The drone (1) is also provided with a microcontroller (108) and a GPS positioning module (105) electrically connected thereto, and the microcontroller (108) is connected to a monitoring center (107) via a wireless network transmission via a 5G module (106); a searchlight (103) is fixedly mounted on the rear sides of the two supporting tripods (102), and the searchlight (103) is electrically connected to the microcontroller (108).

7. The multifunctional UAV capable of maintaining long-term flight time according to claim 6, characterized in that: The fuel input solenoid valve (301), the fuel output solenoid valve (302) and the fuel level sensor (306) are all electrically connected to the microcontroller (108); when the fuel level sensor (306) detects that the liquid level in the fuel tank has not reached a specified threshold, the fuel level sensor (306) feeds back a signal to the microcontroller (108), and the microcontroller (108) controls the fuel input solenoid valve (301) and the fuel output solenoid valve (302) to be in an open state; and when the fuel level sensor (306) detects that the liquid level in the fuel tank has reached a specified threshold, the fuel level sensor (306) feeds back a signal to the microcontroller (108), and the microcontroller (108) controls the fuel input solenoid valve (301) and the fuel output solenoid valve (302) to be in a closed state.

8. The multifunctional UAV capable of maintaining long-term flight time according to claim 7, characterized in that: When the matching sensing plug (4011) corresponds to the position of the sensing slot (4012), the matching sensing plug (4011) is within the sensing range of the proximity switch (4013), and the proximity switch (4013) provides a feedback signal to the microcontroller (108). The microcontroller (108) wirelessly transmits the signal to the monitoring center (107) via the 5G module (106), and the positioning data of the GPS positioning module (105) are attached.

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