Intelligent landing device for unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle intelligent landing device, which relates to the technical field of unmanned aerial vehicle accessories and comprises a supporting leg, a filter screen and a water guide hole are respectively arranged at the bottom of the supporting leg, a liquid level sensor penetrates through one side of the water guide hole, and a first one-way valve is mounted between the water guide hole and the supporting leg. Partition plates, first powder materials and second powder materials are arranged in the supporting legs correspondingly, second one-way valves are installed on the two sides in the supporting legs correspondingly, and one ends of the second one-way valves are connected with air bags through air guiding pipes. Through the arrangement of the filter screen, the water diversion hole and the liquid level sensor, when the unmanned aerial vehicle lands, if the unmanned aerial vehicle wades into water, the supporting legs can be submerged into water, water passes through the water diversion hole, if the unmanned aerial vehicle wades into water such as a river, the water can make contact with the liquid level sensor along with slow landing of the unmanned aerial vehicle, and therefore an electric signal is sent out to enable the unmanned aerial vehicle to climb; the falling-into-water phenomenon of the unmanned aerial vehicle is reduced; the safety is improved, and the phenomenon that the unmanned aerial vehicle lands in water is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drone accessories technology, specifically a drone intelligent landing device. Background Technology

[0002] Drones refer to unmanned aircraft that fly primarily through manual remote control or program control. They are used in fields such as aerial photography, agriculture, plant protection, and transportation. The landing device of a drone usually refers to the support feet on the bottom of the drone. These feet absorb energy through deformation or built-in damping structures to reduce the impact force when the drone lands. There are generally three types of support feet: the first type is for drones that take off and land using a ski-jump method, whose landing device is usually a hydraulic shock-absorbing structure and wheels; the second type is for helicopter drones whose cameras are not located on the bottom. Since the cameras will not hit the ground, their support feet are usually shorter and located below the propellers; the third type is for drones whose cameras are located on the bottom. To avoid the cameras hitting the ground, these support feet are usually higher and located at the bottom of the drone's fuselage.

[0003] Modern drones typically use infrared or visual recognition to determine landing locations when performing automatic landings, such as forced landings. However, if the landing location is in water and there are obstacles such as duckweed or weeds on the surface, the drone may have difficulty detecting that there is water below the landing location. This could result in the drone landing in the water, potentially damaging some of its non-waterproof components and sinking to the bottom, making it difficult to retrieve and repair. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an intelligent landing device for unmanned aerial vehicles (UAVs) to solve the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent landing device for unmanned aerial vehicles (UAVs), comprising a support foot, wherein a filter screen and a water inlet hole are respectively provided at the bottom of the support foot, and a liquid level sensor is inserted through one side of the water inlet hole; a first one-way valve is installed between the water inlet hole and the support foot; a partition, a first powder, and a second powder are respectively provided inside the support foot; a second one-way valve is installed on both sides inside the support foot, and one end of the second one-way valve is connected to an air bladder through an air inlet pipe; and a snap-on cover plate is connected to both sides of the outer surface of the support foot.

[0006] By adopting the above technical solution, when the drone lands, if it wades through water, the support feet will be submerged, allowing water to flow through the water inlet. In the case of rivers or other bodies of water, the water will come into contact with the liquid level sensor as the drone slowly descends, triggering an electrical signal to allow the drone to climb, reducing the likelihood of the drone falling into the water. If it is only a surface flooded area, the water level is unlikely to reach the liquid level sensor due to its relatively high position, thus not triggering an electrical signal to allow the drone to climb again, reducing false alarms. Furthermore, the filter screen increases the water inlet area and prevents impurities from entering, facilitating water entry into the water inlet and triggering the drone's protection mechanism. If the drone falls into water due to a power outage, the water will pass through the water inlet and the first one-way valve into the upper part of the support feet. The partition is made of a water-soluble material that dissolves upon contact with water, allowing the water to come into contact with the first and second powders. If the first powder is carbonated... The first powder is sodium bicarbonate powder, and the second powder is citric acid powder. When the first and second powders are mixed with water, they react to produce carbon dioxide. If both the first and second powders are effervescent tablets, then the first and second powders will also produce carbon dioxide when mixed with water. The carbon dioxide enters the airbag through the second one-way valve and the air vent. At this time, the airbag expands and pushes open the buckle cover, extending out from the support foot, so that the drone rises from the water and floats on the water surface due to buoyancy, making it easier to salvage and repair. The partitions, the first powder, and the second powder are distributed alternately, which firstly makes the sodium bicarbonate powder and citric acid powder mix more evenly, and secondly separates the first and second powders. Multiple partitions bear the force simultaneously, increasing the structural strength. If the partitions are water-soluble paper or modified polyvinyl alcohol films that are composites or cross-linked with other materials, the bearing capacity of the partitions can be further increased, thereby increasing the structural strength.

[0007] Furthermore, multiple partitions, first powder, and second powder are provided, and the multiple partitions, first powder, and second powder are distributed alternately.

[0008] By adopting the above technical solution, and with the partitions, the first powder, and the second powder distributed alternately, firstly, the sodium bicarbonate powder and citric acid powder can be mixed more evenly, and secondly, the first powder and the second powder can be separated, with multiple partitions bearing the force simultaneously, thus increasing the structural strength.

[0009] Furthermore, the first powder is sodium bicarbonate powder or effervescent tablet powder, and the second powder is citric acid powder or effervescent tablet powder.

[0010] By adopting the above technical solution, if the first powder is sodium bicarbonate powder and the second powder is citric acid powder, the first powder and the second powder react with water to produce carbon dioxide. If both the first powder and the second powder are effervescent tablet powder, then the first powder and the second powder also produce carbon dioxide when mixed with water.

[0011] Furthermore, the partition is a polyvinyl alcohol film, a modified polyvinyl alcohol film, or a water-soluble paper.

[0012] By adopting the above technical solution, the partition is a water-soluble material that dissolves upon contact with water, thereby allowing water to come into contact with the first and second powders. If the partition is water-soluble paper or a modified polyvinyl alcohol film that is composited and cross-linked with other materials, the load-bearing capacity of the partition can be further increased, thereby increasing the structural strength.

[0013] Furthermore, the airbag has a serpentine longitudinal section, and the back of the airbag is fixedly connected to the inner wall of the support foot by strong adhesive.

[0014] By adopting the above technical solution, the airbag is folded into a serpentine shape to reduce its footprint and avoid an overly bulky structure, thus making it easier to use.

[0015] Furthermore, the snap-on cover plate is detachably connected to the support leg.

[0016] By adopting the above technical solution, the airbag expands and pushes open the buckle cover, extending out from the support foot, thereby allowing the drone to rise from the water and float on the water surface due to buoyancy, so as to facilitate salvage and repair.

[0017] Furthermore, both sides of the bottom of the support foot are connected to a cushioning pad, which is made of rubber, silicone or PU material.

[0018] By adopting the above technical solution, after landing, the drone makes contact with the ground through its support feet and buffer pads, allowing it to land smoothly on the ground.

[0019] Furthermore, four mounting holes are provided on both sides of the top of the support foot, and the eight mounting holes are distributed in two circular arrays.

[0020] By adopting the above technical solution, this intelligent landing device is connected to the bottom of the UAV body through mounting holes and bolts, and signal lines and power lines connect the liquid level sensor to the UAV's wiring.

[0021] Furthermore, a limiting component is connected between the supporting foot and the snap-on cover plate, and the limiting component is a silicone ring or a clamp.

[0022] By adopting the above technical solution, before the drone takes off, the user moves the limiting component away from the front of the latch cover to avoid affecting the deployment of the airbag; after the drone lands, the user moves the limiting component back to limit the latch cover, preventing the latch cover from falling off and causing the airbag to leak out due to bumps and collisions during transportation.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model, through the design of a filter screen, water inlet, and liquid level sensor, ensures that when a drone lands, if it is wading through water, its support legs will be submerged, allowing water to flow through the water inlet. In the case of rivers or other bodies of water, the water will come into contact with the liquid level sensor as the drone slowly descends, triggering an electrical signal to allow the drone to climb, thus reducing the likelihood of the drone falling into the water. If it is only a surface flooded area, the water level is unlikely to reach the liquid level sensor due to its relatively high position, preventing the triggering of an electrical signal to allow the drone to climb again, reducing false alarms. Furthermore, the filter screen increases the water inlet area and prevents impurities from entering, facilitating water entry into the water inlet and triggering the drone's protection mechanism; thus improving safety and reducing the occurrence of drones landing in water.

[0025] 2. This utility model, through the arrangement of a first one-way valve, a partition, a first powder, a second powder, a second one-way valve, an air intake pipe, an airbag, and a snap-on cover, allows the drone to remain submerged even if it falls into water due to a power outage. Water will still enter through the water intake hole, but instead, it will pass through the first one-way valve into the upper part of the support leg. The partition, being a water-soluble material, dissolves upon contact with water, allowing the water to come into contact with the first and second powders. The first and second powders then react with the water to produce carbon dioxide. This carbon dioxide enters the airbag through the second one-way valve, causing the airbag to expand and push open the snap-on cover, extending from the support leg. This allows the drone to rise from the water and float on the surface due to buoyancy, facilitating retrieval and repair. Furthermore, the partition, the first powder, and the second powder are staggered, which ensures a more uniform mixing of sodium bicarbonate powder and citric acid powder, and separates the first and second powders. Multiple partitions simultaneously bear the load, increasing structural strength and facilitating retrieval and repair. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the image;

[0029] Figure 4 This is a schematic diagram of the airbag structure of this utility model.

[0030] In the diagram: 1. Support foot; 2. Mounting hole; 3. Buffer pad; 4. Filter screen; 5. Water inlet hole; 6. Liquid level sensor; 7. First check valve; 8. Baffle plate; 9. First powder; 10. Second powder; 11. Second check valve; 12. Air inlet pipe; 13. Airbag; 14. Snap-on cover plate; 15. Limiting component. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The embodiments of this utility model will be described below based on its overall structure.

[0033] Example 1:

[0034] A smart landing device for drones, such as Figures 1-4As shown, the device includes a support foot 1, with a filter screen 4 and a water inlet hole 5 at the bottom. A liquid level sensor 6 passes through one side of the water inlet hole 5. When the drone lands, if it is wading through water, the support foot 1 will be submerged in the water, allowing water to pass through the water inlet hole 5. In the case of rivers or other bodies of water, as the drone slowly descends, the water will come into contact with the liquid level sensor 6, triggering an electrical signal to allow the drone to climb, reducing the likelihood of the drone falling into the water. If it is just a surface flooded area, the water level is unlikely to reach the liquid level sensor 6 due to its relatively high position, thus not triggering an electrical signal to allow the drone to climb again, reducing false alarms. Furthermore, the filter screen 4 increases the water inlet area and prevents impurities from entering, facilitating water entry. The protection mechanism of the UAV is triggered when water enters through the inlet hole 5. A first one-way valve 7 is installed between the inlet hole 5 and the support leg 1. Inside the support leg 1, there are partitions 8, a first powder 9, and a second powder 10. The first powder 9 is sodium bicarbonate powder or effervescent tablet powder, and the second powder 10 is citric acid powder or effervescent tablet powder. The partition 8 is made of polyvinyl alcohol film, modified polyvinyl alcohol film, or water-soluble paper. Multiple partitions 8, first powder 9, and second powder 10 are provided, and the multiple partitions 8, first powder 9, and second powder 10 are staggered. Second one-way valves 11 are installed on both sides inside the support leg 1. One end of the second one-way valve 11 is connected to an airbag 13 through an air inlet pipe 12. The longitudinal section of the airbag 13 is serpentine. The back of the airbag 13 is connected to a strong... The adhesive is fixed to the inner wall of the support foot 1 by bonding. Both sides of the outer surface of the support foot 1 are connected to snap-on cover plates 14, which are detachably connected to the support foot 1. If the drone falls into water due to a power outage, water will enter the upper part of the support foot 1 through the water inlet 5 and the first one-way valve 7. The partition 8 is a water-soluble material that dissolves upon contact with water, allowing the water to come into contact with the first powder 9 and the second powder 10. If the first powder 9 is sodium bicarbonate powder and the second powder 10 is citric acid powder, the mixture of the first powder 9, the second powder 10, and water will produce carbon dioxide. If both the first powder 9 and the second powder 10 are effervescent tablet powders, the mixture of the first powder 9 and the second powder 10 with water will also produce carbon dioxide. Carbon dioxide enters the airbag 13 through the second one-way valve 11 and the air intake pipe 12. At this time, the airbag 13 expands and pushes open the buckle cover 14, extending out from the support foot 1, so that the UAV rises from the water and floats on the water surface due to buoyancy, making it easier to salvage and repair. The partitions 8, the first powder 9, and the second powder 10 are distributed in an alternating manner. Firstly, it can make the sodium bicarbonate powder and citric acid powder mix more evenly. Secondly, it can separate the first powder 9 and the second powder 10. Multiple partitions 8 can bear the force at the same time, increasing the structural strength. If the partitions 8 are water-soluble paper or modified polyvinyl alcohol film that is composited and cross-linked with other materials, the bearing capacity of the partitions 8 can be further increased, thereby increasing the structural strength.

[0035] See Figure 1 and Figure 2 In the above embodiment, buffer pads 3 are connected to both sides of the bottom of the support foot 1. The buffer pads 3 are made of rubber, silicone or PU material. Four mounting holes 2 are opened on both sides of the top of the support foot 1. The eight mounting holes 2 are distributed in two ring arrays. The intelligent landing device is connected to the bottom of the drone body through the mounting holes 2 and bolts. Signal lines and power lines connect the liquid level sensor 6 to the drone's wiring. After landing, the drone contacts the ground through the support foot 1 and the buffer pads 3, allowing the drone to land smoothly on the ground.

[0036] Example 2:

[0037] Based on the above embodiment one, the following settings are now implemented to increase stability.

[0038] See Figure 1 and Figure 2 In the above embodiment, a limiting member 15 is connected between the support foot 1 and the buckle cover 14. The limiting member 15 is a silicone ring or clamp. Before the drone takes off, the user moves the limiting member 15 away from the buckle cover 14 to avoid affecting the deployment of the airbag 13. After the drone lands, the user moves the limiting member 15 back to limit the buckle cover 14 to prevent the buckle cover 14 from falling off and the airbag 13 from leaking out due to bumps and collisions during transportation.

[0039] The implementation principle of this utility model is as follows: First, the intelligent landing device is connected to the bottom of the drone body through the mounting hole 2 and bolts, and the liquid level sensor 6 is connected to the drone's wiring through signal lines and power lines; after landing, the drone contacts the ground through the support feet 1 and the buffer pad 3, allowing the drone to land smoothly on the ground; before the drone takes off, the user moves the limiting piece 15 away from the front of the buckle cover 14 to avoid affecting the deployment of the airbag 13; the airbag 13 is folded into a snake shape to reduce the occupied area, thus facilitating use; after the drone lands, the user moves the limiting piece 15 back to limit the buckle cover 14, preventing the buckle cover 14 from falling off and causing the airbag 13 to leak out due to bumps and collisions during transportation;

[0040] When the drone lands, if it is wading through water, the support foot 1 will be submerged in the water, allowing water to pass through the water inlet 5. If it is a river or other body of water, the water will come into contact with the liquid level sensor 6 as the drone slowly descends, thereby sending an electrical signal to make the drone climb, reducing the occurrence of the drone falling into the water. If it is just a waterlogged area on the road, the water level is unlikely to reach the liquid level sensor 6 because the liquid level sensor 6 is relatively high, so no electrical signal will be sent to make the drone climb again, reducing false alarms. In addition, the presence of the filter screen 4 increases the water inlet area and prevents impurities from entering, thus facilitating water to enter the water inlet 5 and trigger the drone's protection mechanism.

[0041] If the drone falls into the water due to a power outage, the water will enter the upper part of the support foot 1 through the water inlet 5 and the first one-way valve 7. The partition 8 is a water-soluble material that will dissolve upon contact with water, allowing the water to come into contact with the first powder 9 and the second powder 10. If the first powder 9 is sodium bicarbonate powder and the second powder 10 is citric acid powder, the first powder 9, the second powder 10, and the water will react to produce carbon dioxide. If the first powder 9 and the second powder 10 are both effervescent tablet powder, the first powder 9 and the second powder 10 will also produce carbon dioxide when mixed with water. The carbon dioxide will enter the airbag 13 through the second one-way valve 11 and the air inlet pipe 12. At this time, the airbag 13 will expand and push open the buckle cover 14, extending out from the support foot 1, so that the drone will rise from the water and float on the surface due to buoyancy, making it easier to salvage and repair.

[0042] Furthermore, the partitions 8, the first powder 9, and the second powder 10 are staggered, which firstly allows the sodium bicarbonate powder and citric acid powder to mix more evenly, and secondly allows the first powder 9 and the second powder 10 to be separated, with multiple partitions 8 bearing the force simultaneously, thus increasing the structural strength. If the partitions 8 are water-soluble paper, or modified polyvinyl alcohol films that are composites or cross-linked with other materials, the bearing capacity of the partitions 8 can be further increased, thereby increasing the structural strength.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A smart landing device for unmanned aerial vehicles (UAVs), comprising a support leg (1), characterized in that: The bottom of the support foot (1) is provided with a filter screen (4) and a water inlet hole (5), and a liquid level sensor (6) is inserted through one side of the water inlet hole (5). A first one-way valve (7) is installed between the water inlet hole (5) and the support foot (1). The support foot (1) is provided with a partition (8), a first powder (9) and a second powder (10). A second one-way valve (11) is installed on both sides of the support foot (1), and one end of the second one-way valve (11) is connected to an air bag (13) through an air inlet pipe (12). A snap-on cover plate (14) is connected to both sides of the outer surface of the support foot (1).

2. The intelligent landing device for unmanned aerial vehicles according to claim 1, characterized in that: Multiple partitions (8), first powder (9) and second powder (10) are provided, and multiple partitions (8), first powder (9) and second powder (10) are distributed alternately.

3. The intelligent landing device for unmanned aerial vehicles according to claim 2, characterized in that: The first powder (9) is sodium bicarbonate powder or effervescent tablet powder, and the second powder (10) is citric acid powder or effervescent tablet powder.

4. The intelligent landing device for unmanned aerial vehicles according to claim 2, characterized in that: The partition (8) is a polyvinyl alcohol film, a modified polyvinyl alcohol film, or a water-soluble paper.

5. The intelligent landing device for unmanned aerial vehicles according to claim 1, characterized in that: The airbag (13) has a serpentine longitudinal section, and the back of the airbag (13) is fixedly connected to the inner wall of the support foot (1) by strong adhesive.

6. The intelligent landing device for unmanned aerial vehicles according to claim 1, characterized in that: The snap-on cover plate (14) is detachably connected to the support foot (1).

7. The intelligent landing device for unmanned aerial vehicles according to claim 1, characterized in that: Both sides of the bottom of the support foot (1) are connected to a buffer pad (3), and the buffer pad (3) is made of rubber, silicone or PU material.

8. The intelligent landing device for unmanned aerial vehicles according to claim 7, characterized in that: The support foot (1) has four mounting holes (2) on both sides of its top, and the eight mounting holes (2) are distributed in two ring arrays.

9. The intelligent landing device for unmanned aerial vehicles according to claim 6, characterized in that: The support foot (1) and the snap cover plate (14) are connected by a limiting member (15), and the limiting member (15) is a silicone ring or a clamp.

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