Unmanned aerial vehicle based water sampling device

Abstract

The utility model discloses a water sample collection device based on unmanned plane, including unmanned plane body, the unmanned plane body is equipped with the perception camera, buoyancy mechanism, sample bottle, negative pressure mechanism and sampling tube, the perception camera is configured as real -time collection environmental information, buoyancy mechanism is configured as the required buoyancy that water sample collection device floats on the water surface provides, sample bottle is configured as the water sample of containing collection, negative pressure mechanism is connected with sample bottle, is configured as make the negative pressure in sample bottle, to utilize the negative pressure of generating and suck the water sample to sample bottle in, sampling tube has the water outlet end and the water suction end, and the water outlet end is connected sample bottle, and the water suction end is equipped with filter piece, wherein, all components of water sample collection device except sample bottle have a barycenter, and the vertical straight line of barycenter coincides or approximately coincides with the axis of sample bottle. The utility model has realized water sample collection.

Description

Technical Field

[0001] This utility model belongs to the technical field of water sample collection devices, and specifically relates to a water sample collection device based on a drone. Background Technology

[0002] Water sampling refers to the process of obtaining a certain amount of water samples from natural water bodies (such as rivers, lakes, oceans, and groundwater) or artificial water bodies (such as reservoirs and sewage treatment plants) using scientific methods for subsequent physical, chemical, or biological analysis. Water sampling is a fundamental step in environmental monitoring, water quality assessment, ecological research, and industrial emission detection.

[0003] With increasingly stringent requirements for environmental protection and water resource management, water sampling, as a crucial step in water quality monitoring, faces increasingly stringent technical requirements. In recent years, the development of unmanned aerial vehicle (UAV) technology has provided a new solution for water sampling. However, existing UAV-based water sampling equipment suffers from the following problems during the sampling process:

[0004] Question 1: Drone operators need to rely on experience to fly the drone to the target sampling location within the visible range. However, for situations involving large water areas and the need for precise sampling at multiple locations, the operator's experience and weather conditions make it difficult to accurately control the drone to stay at the ideal sampling point. This has a certain adverse effect on subsequent research into the variation patterns of water sample analysis results at different locations in large water areas.

[0005] Question 2: When drones land, they often make hard landings, which can cause impacts and vibrations to the drone's fuselage. Repeated impacts and vibrations can damage the structure of the drone and affect its service life.

[0006] Question 3: Existing drones can only land on land and cannot stay on the water surface. When sampling, they can only hover in the air at a small distance above the water surface. The drone propellers rotate continuously to provide lift, and the rotation of the drone propellers will cause some disturbance to the water surface, which will have an adverse effect on shallow water sampling.

[0007] Question 4: Before and after water sampling, the overall center of gravity of the drone and all its components will change, which will not only affect the flight stability of the drone, but also make it difficult for it to float stably on the water surface.

[0008] Question 5: Using a pump-suction working principle to power water sample collection has two main drawbacks. First, the pumping process significantly disturbs the relatively static water body, altering its natural state at the sampling location. This can lead to unrepresentative water samples, affecting the accuracy of subsequent testing results. Second, the moving parts of the pump may generate minute wear particles over long-term use. If these particles mix into the collected water sample, they will negatively impact subsequent analytical results, especially for samples requiring high analytical precision. Utility Model Content

[0009] In view of the above analysis, the present invention aims to provide a water sampling device based on a drone to solve at least one of the above-mentioned problems in the prior art.

[0010] The purpose of this utility model is achieved as follows:

[0011] A water sampling device based on a drone includes a drone body, on which are:

[0012] The sensing camera is configured to collect environmental information in real time;

[0013] A buoyancy mechanism is configured to provide the necessary buoyancy for the water sampling device to float on the water surface;

[0014] Sampling bottles are configured to hold the collected water samples;

[0015] A negative pressure mechanism, connected to a sampling bottle, is configured to generate a negative pressure inside the sampling bottle so as to draw the water sample into the sampling bottle using the generated negative pressure.

[0016] The sampling tube has an outlet end and an absorption end. The outlet end is connected to the sampling bottle, and the absorption end is equipped with a filter.

[0017] The water sampling device, except for the sampling bottle, has a center of gravity that is either coincident or approximately coincident with the axis of the sampling bottle by a vertical line passing through the center of gravity.

[0018] Furthermore, the sensing camera is connected to the bottom front of the drone body via a mounting bracket; the sampling bottle and negative pressure mechanism are connected to the bottom of the drone body via a connecting bracket; the mounting bracket is located at the bottom front of the drone body, and the connecting bracket is located behind the mounting bracket.

[0019] Furthermore, it also includes a shock-absorbing support, which includes a shock-absorbing damper, a leg, and a buffer pad; the leg is connected to the bottom of the UAV body through the shock-absorbing damper, and the buffer pad is located at the bottom of the leg.

[0020] Furthermore, there are two sets of shock absorbers, outriggers, and buffer pads, with the two sets of shock absorbers and outriggers symmetrically arranged on the left and right sides of the bottom of the UAV body.

[0021] Furthermore, the buoyancy mechanism is located on the outriggers; the outriggers adopt a trapezoidal ring structure made of hollow tubes, and the two outriggers are arranged in a figure-eight shape.

[0022] Furthermore, the buoyancy mechanism has an air bladder, which is equipped with an air nozzle, through which the air bladder is inflated and deflated.

[0023] Furthermore, two airbags are symmetrically positioned on the two outriggers.

[0024] Furthermore, the negative pressure mechanism has a negative pressure bottle, which is connected to the sampling bottle via a connecting pipe. The negative pressure inside the negative pressure bottle serves as the power for the sampling bottle to draw in water samples. An electric control valve is installed on the connecting pipe to control the connection status between the negative pressure bottle and the sampling bottle.

[0025] Furthermore, the bottom of the connector is provided with a first sealing cap and a second sealing cap. The bottle mouth of the negative pressure bottle is threaded to the first sealing cap, and the bottle mouth of the sampling bottle is threaded to the second sealing cap. The sampling tube passes through the second sealing cap and communicates with the inside of the sampling bottle.

[0026] Furthermore, the negative pressure bottle is pre-treated to be in an internal negative pressure state;

[0027] Alternatively, the negative pressure mechanism may also include a suction assembly connected to the negative pressure bottle via a suction line, which is configured to create a negative pressure state inside the bottle through a suction action.

[0028] Furthermore, the air extraction assembly includes a piston, a slide rod, an electric push rod, and a connecting plate; the connecting seat has a piston chamber inside, the piston slides in the piston chamber, the slide rod is fixedly connected to the rear side of the piston, the electric push rod is located inside the UAV body, the telescopic rod of the electric push rod is connected to the connecting plate, and the front side of the connecting plate is fixedly connected to the slide rod.

[0029] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0030] a) The water sampling device based on UAV provided by this utility model can collect environmental information in real time by setting a sensing camera on the UAV body, and accurately locate multiple sampling points in a large area of ​​target water by combining GPS data, thereby enabling the UAV to fly to the accurate sampling point and thus achieve precise sampling.

[0031] b) The water sampling device based on UAV provided by this utility model can provide better buffering and shock absorption when the UAV lands by setting a buffer and shock absorption support on the UAV body, so as to ensure that the UAV lands smoothly and avoid damage to the body structure.

[0032] c) The water sampling device based on UAV provided by this utility model provides sufficient buoyancy by setting a buoyancy mechanism, which enables the UAV to float stably on the water surface.

[0033] d) The water sampling device based on UAV provided by this utility model improves and optimizes the center of gravity position of the UAV body and its mounted components. That is, all components of the water sampling device except the sampling bottle have a center of gravity. By aligning or approximately aligning the vertical line of the center of gravity with the axis of the sampling bottle, it can be ensured that even if the total weight of the sampling bottle increases to varying degrees after each sampling, it will not have a significant impact on the flight stability of the UAV.

[0034] e) The water sampling device based on UAV provided by this utility model uses a negative pressure mechanism to replace traditional pump-type equipment such as water pumps, which will not cause significant disturbance to the relatively static water body and ensure that the collected water sample maintains the natural state of the water body; moreover, the negative pressure sampling is completely sealed, which can prevent human or environmental pollutants from entering the water sample, thereby ensuring the accuracy of subsequent test results.

[0035] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0037] Figure 1 A schematic diagram of the overall structure of the UAV-based water sampling device provided by this utility model;

[0038] Figure 2 A three-dimensional structural diagram of the drone body, mounting base, and sensing camera provided by this utility model;

[0039] Figure 3 A three-dimensional cross-sectional view of the UAV body, connecting seat, and sampling tube provided by this utility model;

[0040] Figure 4A three-dimensional cross-sectional view of the connecting seat, slide rod, and air guide tube provided by this utility model;

[0041] Figure 5 A three-dimensional structural diagram of the drone body, shock absorber, and outriggers provided by this utility model.

[0042] Figure label:

[0043] 1. UAV body; 2. Connecting rod; 3. Propeller blade; 4. Mounting base; 5. Sensing camera; 6. Connecting base; 601. Piston chamber; 7. Piston; 8. Slide rod; 9. Electric push rod; 10. Connecting plate; 11. First sealing cap; 12. Negative pressure bottle; 13. Second sealing cap; 14. Sampling bottle; 15. Sampling tube; 16. Connecting tube; 17. Air duct; 18. Shock absorber; 19. Mounting buckle; 20. Outriggers; 21. Mounting ring; 22. Airbag; 23. Air nozzle; 24. Buffer pad; 25. Filter; 26. Lighting. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] To facilitate understanding of the embodiments of this application, further explanation and description will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application. In the drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0046] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0047] Example 1

[0048] A specific embodiment of this utility model discloses a water sampling device based on an unmanned aerial vehicle (UAV), hereinafter referred to as a "water sampling device". Figures 1 to 5 As shown, the device includes a drone body 1, with two connecting rods 2 fixedly connected to both the left and right sides of the drone body 1. A propeller 3 is mounted on the end of each connecting rod 2 furthest from the drone body 1. The drone body 1 is equipped with:

[0049] Sensing camera 5 is configured to collect environmental information in real time;

[0050] A buoyancy mechanism is configured to provide the necessary buoyancy for the water sampling device to float on the water surface;

[0051] Sampling bottle 14 is configured to hold the collected water sample;

[0052] A negative pressure mechanism, connected to the sampling bottle 14, is configured to generate a negative pressure inside the sampling bottle 14 so as to draw the water sample into the sampling bottle 14 using the generated negative pressure.

[0053] The sampling tube 15 has an outlet end and an absorption end. The outlet end is connected to the sampling bottle 14, and the absorption end can be submerged below the water surface. The absorption end is equipped with a filter element 25, which is used to filter impurities in the water sample to prevent clogging of the sampling tube 15.

[0054] Since the center of gravity of the water sampling device affects the flight stability of the UAV, and the overall center of gravity of the water sampling device changes before and after water sampling, in order to ensure the flight stability of the UAV before and after sampling, in one optional embodiment of this application, the center of gravity of the UAV body and its mounted components is improved and optimized as follows: All components of the water sampling device except for the sampling bottle 14 have a center of gravity, and the vertical line passing through the center of gravity coincides with or approximately coincides with the axis of the sampling bottle 14. Here, "approximately coincides" means that the distance between the vertical line passing through the center of gravity and the axis of the sampling bottle does not exceed 5 cm. That is to say, the sampling bottle 14 is roughly located in the bottom middle area of ​​the UAV body 1. When the UAV body 1 is in a horizontal state, the vertical line where the center of gravity of all components excluding the sampling bottle 14 is located roughly passes through the central area of ​​the UAV body 1 and coincides with or approximately coincides with the axis of the sampling bottle 14, and the distance between this vertical line and the axis of the sampling bottle 14 does not exceed 5 cm. This ensures that the drone can fly stably after water sampling, and even if the total weight of the 14 sampling bottles increases to varying degrees after each sampling, it will not have a significant impact on the drone's flight stability.

[0055] In this embodiment, the sensing camera 5 is connected to the bottom front side of the drone body 1 via the mounting base 4; the sampling bottle 14 and the negative pressure mechanism are connected to the bottom of the drone body 1 via the connecting base 6; the mounting base 4 is fixedly connected to the bottom front side of the drone body 1, and the connecting base 6 is located behind the mounting base 4. Here, "behind" means that when the drone is in forward flight, the sensing camera 5 is located at the bottom front of the drone body 1, facing the direction of travel, and at this time, the connecting base 6 is located behind the mounting base 4.

[0056] In one alternative embodiment, the water sampling device further includes a shock-absorbing support, which comprises a damper 18, legs 20, and a buffer pad 24. The legs 20 can withstand the main impact force when the UAV lands. The legs 20 are connected to the bottom of the UAV body 1 via the damper 18, and the buffer pad 24 is located at the bottom of the legs 20. When the UAV touches the ground, the buffer pad 24 touches the ground first, providing some cushioning against the impact. The initially reduced impact force is transmitted to the damper 18 via the legs 20. The spring inside the damper absorbs the impact energy through elastic deformation, converting the instantaneous impact force into a slow-release reciprocating motion, thereby effectively attenuating the impact vibration, ensuring a smooth landing of the UAV, and preventing damage to the airframe structure. Moreover, this shock-absorbing support structure is low in cost and easy to maintain and replace parts.

[0057] For example, there are two sets of shock absorber 18, outrigger 20 and buffer pad 24, and the two sets of shock absorber 18 and outrigger 20 are symmetrically arranged on the left and right sides of the bottom of the UAV body 1. Two mounting buckles 19 are fixedly connected to the bottom of the shock absorber 18, and each outrigger 20 is connected to the shock absorber 18 through two mounting buckles 19.

[0058] In one alternative embodiment, the buoyancy mechanism is provided on the outrigger 8; the outrigger 20 adopts a trapezoidal ring structure made of hollow tubes and is made of lightweight and high-strength materials, such as carbon fiber or aluminum alloy. The outrigger 8 adopts a hollow tube made of lightweight and high-strength materials, which can reduce the overall weight; the corners of the trapezoidal ring structure are rounded; the two outriggers 8 are arranged in a figure-eight shape, which provides better stability when parked on the ground.

[0059] In one alternative embodiment, the buffer pad 24 is made of wear-resistant rubber or silicone material, which not only reduces wear on the outriggers 20, but also has a certain cushioning performance. In addition, the bottom of the buffer pad 24 is provided with anti-slip texture to improve the anti-slip performance of the drone on land and make it more stable.

[0060] In one alternative embodiment, the buoyancy mechanism includes an airbag 22, with an air nozzle 23 at its top for inflating and deflating. Specifically, there are two airbags 22, symmetrically positioned on two outriggers 8. Each outrigger 8 has two mounting rings 21 fixedly connected to its lower part, and each airbag 22 is secured to one outrigger 8 via the two mounting rings 21. Before takeoff, the operator injects gas into the airbag 22 through the air nozzle 23. After the airbag 22 is fully inflated and maintains rigid support, its airtightness must be checked to ensure there are no leaks before operation can commence. When the drone lands in water, the airbag 22 provides sufficient buoyancy, allowing the drone to float stably on the water surface.

[0061] It should be noted that, Figure 1 and Figure 5 The diagram only schematically illustrates the structure of the airbag 22. The size and shape of the airbag 22 in the diagram do not represent the actual product size and shape. The specific size and shape can be set according to actual needs. The buoyancy generated by the two airbags 22 is sufficient to ensure the stable floating of the water sampling device on the water surface. It can be understood that if the buoyancy generated by the airbags 22 is insufficient to ensure the stable floating of the water sampling device, it can also be combined with the lift provided by the rotation of the paddle 3 to provide the upward force required for the stable floating of the water sampling device on the water surface.

[0062] In one optional embodiment, the negative pressure mechanism includes a negative pressure bottle 12, which is connected to a sampling bottle 14 via a connecting pipe 16. The negative pressure inside the negative pressure bottle 12 serves as the driving force for the sampling bottle 14 to draw in water samples. An electrically controlled valve is installed on the connecting pipe 16 to control the connection / disconnection between the negative pressure bottle 12 and the sampling bottle 14. Before sampling, the electrically controlled valve is closed, disconnecting the negative pressure bottle 12 from the sampling bottle 14. During sampling, the electrically controlled valve is opened to connect the negative pressure bottle 12 to the sampling bottle 14. After sampling is completed, the electrically controlled valve is closed. During the process of the water sample entering the sampling bottle 14, some air will enter the negative pressure bottle 12 from the sampling bottle 14, giving the submerged negative pressure bottle 12 a certain degree of buoyancy.

[0063] In one optional embodiment, the bottom of the connecting base 6 is provided with a first sealing cap 11 and a second sealing cap 13. The bottle neck of the negative pressure bottle 12 is threadedly connected to the first sealing cap 11, and the bottle neck of the sampling bottle 14 is threadedly connected to the second sealing cap 13. A sampling tube 15 is connected to and communicates with the second sealing cap 13, and the sampling tube 15 passes through the second sealing cap 13 and communicates with the interior of the sampling bottle 14. Optionally, the first sealing cap 11 and the second sealing cap 13 are jointly provided with a connecting tube 16, which extends into the interior of the sampling bottle 14. A gas guide tube 17 is provided inside the connecting base 6, which extends into the interior of the negative pressure bottle 12. By integrating the first sealing cap 11 and the second sealing cap 13 at the bottom of the connecting base 6, and by using a threaded connection between the negative pressure bottle 12 and the sampling bottle 14, it is convenient to install and remove the negative pressure bottle 12 and the sampling bottle 14.

[0064] In one alternative embodiment, the negative pressure bottle 12 is pre-treated to a negative internal pressure state. That is, the negative pressure bottle 12 is evacuated before takeoff, and a negative pressure is formed inside the negative pressure bottle 12. When sampling, the negative pressure sampling can be turned on and off simply by using the electrically controlled valve on the connecting pipe 16.

[0065] In another optional embodiment, the vacuuming structure can be directly installed on the UAV body 1. This allows negative pressure to be generated inside the negative pressure bottle 12 after reaching the predetermined sampling position, or further vacuuming can be performed during the sampling process to increase the negative pressure inside the negative pressure bottle 12 and accelerate water sample collection. For example, the negative pressure mechanism also includes an air extraction component connected to the negative pressure bottle 12 via a suction pipe. The air extraction component is configured to create a negative pressure state inside the negative pressure bottle 12 through an air extraction action. The negative pressure treatment operation on the negative pressure bottle 12 can be performed before or during water sample collection. Optionally, the air extraction component has a piston 7, a slide rod 8, an electric push rod 9, and a connecting plate 10. The connecting seat 6 has a piston cavity 601 inside, the piston 7 is slidably disposed within the piston cavity 601, the slide rod 8 is fixedly connected to the rear side of the piston 7, the electric push rod 9 is disposed inside the UAV body 1, the telescopic rod of the electric push rod 9 is connected to the connecting plate 10, and the front side of the connecting plate 10 is fixedly connected to the slide rod 8. When negative pressure operation is required on the negative pressure bottle 12, the electric push rod 9 is activated. By controlling the extension rod of the electric push rod 9, the slide rod 8 and piston 7 move backward in the piston chamber 601, so that negative pressure is generated in the negative pressure bottle 12. The negative pressure in the negative pressure bottle 12 is transmitted to the sampling bottle 14 through the connecting pipe 16. Under the action of negative pressure, the water sample is sucked into the sampling bottle 14 through the sampling tube 15, and the water sample collection is completed. After the sampling is completed, the electric push rod 9 is activated to reset the slide rod 8 and piston 7.

[0066] In one alternative embodiment, lighting lamps 26 are provided on both the left and right sides of the mounting base 4. The lighting lamps 26 provide supplementary lighting when the light is insufficient, ensuring the working stability of the sensing camera 5.

[0067] The working process of the water sampling device in this embodiment is as follows:

[0068] The operator sets the target sampling location and flight path of the drone via the control panel. Then, by activating the drone body 1 and the sensing camera 5, the drone body 1, powered by propellers 3, flies to the target water area. The sensing camera 5 collects environmental information in real time and, combined with GPS data, accurately locates the target water area to determine the optimal sampling point. Once the drone reaches the target location, it descends and hovers on the water surface. The operator adjusts the drone's position via the control panel, ensuring the sampling tube 15 is vertically inserted into the water to the preset depth, ensuring precise and controllable sampling depth. Then, the... An electrically controlled valve connects the negative pressure bottle 12 to the sampling bottle 14. The negative pressure in the negative pressure bottle 12 is transferred to the sampling bottle 14 through the connecting pipe 16. Under the action of negative pressure, the water sample is sucked into the sampling bottle 14 through the sampling pipe 15 to complete the collection. The negative pressure sampling process is completely closed, which can prevent human or environmental pollutants from mixing into the water sample. It also eliminates the need for pumping or stirring, reducing interference with the water body. After the sampling is completed, the electrically controlled valve is closed. After the drone flies back to the starting position, the operator can rotate the sampling bottle 14 to remove it from the second sealing cap 13 and immediately seal the bottle mouth to ensure that the sample is not contaminated during transportation.

[0069] Compared with existing technologies, the UAV-based water sampling device provided in this embodiment can achieve at least one of the following beneficial effects:

[0070] 1. By setting up a sensing camera on the drone itself, environmental information can be collected in real time. Combined with GPS data, multiple sampling points in a large area of ​​water can be accurately located, enabling the drone to fly to the accurate sampling point and thus achieve precise sampling.

[0071] 2. By setting buffer and shock-absorbing supports on the drone body, better buffering and shock absorption can be achieved when the drone lands, ensuring a smooth landing and avoiding damage to the aircraft structure.

[0072] 3. By setting up a buoyancy mechanism to provide sufficient buoyancy, the drone can float stably on the water surface.

[0073] 4. By improving and optimizing the center of gravity of the unmanned aerial vehicle (UAV) and its onboard components, the UAV can maintain stable flight before and after water sampling. Specifically, all components of the water sampling device, except for the sampling bottle, have a single center of gravity. This center of gravity is aligned or nearly aligned with the axis of the sampling bottle, ensuring that the sampling bottle is roughly located in the bottom center of the UAV. Even if the total weight of the sampling bottle increases to varying degrees after each sampling, it will not significantly affect the stability of the UAV's flight.

[0074] 5. Using a negative pressure mechanism instead of traditional pump-type equipment such as water pumps will not cause significant disturbance to the relatively static water body, ensuring that the collected water sample maintains the natural state of the water body; moreover, the negative pressure sampling process is completely sealed, which can prevent human or environmental pollutants from entering the water sample, thereby ensuring the accuracy of subsequent test results.

[0075] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A water sampling device based on an unmanned aerial vehicle (UAV), comprising the UAV body (1), characterized in that, The UAV body (1) is equipped with: The sensing camera (5) is configured to collect environmental information in real time; A buoyancy mechanism is configured to provide the necessary buoyancy for the water sampling device to float on the water surface; The sampling bottle (14) is configured to hold the collected water sample; A negative pressure mechanism, connected to the sampling bottle (14), is configured to generate a negative pressure inside the sampling bottle (14) so ​​as to draw the water sample into the sampling bottle (14) using the generated negative pressure. The sampling tube (15) has an outlet end and an absorption end, the outlet end is connected to the sampling bottle (14), and the absorption end is provided with a filter element (25); The water sample collection device, except for the sampling bottle (14), has a center of gravity in all its components, and the vertical line passing through the center of gravity coincides or approximately coincides with the axis of the sampling bottle (14).

2. The water sampling device based on a drone according to claim 1, characterized in that, The sensing camera (5) is connected to the bottom front side of the UAV body (1) via a mounting bracket (4); The sampling bottle (14) and the negative pressure mechanism are connected to the bottom of the UAV body (1) via a connecting seat (6); The mounting base (4) is located at the bottom front side of the UAV body (1), and the connecting base (6) is located behind the mounting base (4).

3. The water sampling device based on a drone according to claim 1, characterized in that, It also includes a shock absorber support, which includes a shock absorber (18), a support leg (20) and a shock absorber pad (24); The outrigger (20) is connected to the bottom of the UAV body (1) via the shock absorber (18), and the buffer pad (24) is located at the bottom of the outrigger (20).

4. The UAV-based water sampling device according to claim 3, characterized in that, The shock absorber (18), outrigger (20) and buffer pad (24) are in two sets, and the two sets of shock absorber (18) and outrigger (20) are symmetrically arranged on the left and right sides of the bottom of the UAV body (1).

5. The UAV-based water sampling device according to claim 3 or 4, characterized in that, The buoyancy mechanism is mounted on the support leg (20); The support leg (20) adopts a trapezoidal ring structure made of hollow tube, and the two support legs (20) are arranged in a figure-eight shape.

6. The UAV-based water sampling device according to claim 5, characterized in that, The buoyancy mechanism has an airbag (22), which is equipped with an air nozzle (23) to inflate and deflate the airbag (22).

7. The UAV-based water sampling device according to claim 6, characterized in that, Two airbags (22) are symmetrically arranged on the two outriggers (20).

8. The UAV-based water sampling device according to claim 2, characterized in that, The negative pressure mechanism has a negative pressure bottle (12), which is connected to the sampling bottle (14) via a connecting pipe (16). The negative pressure inside the negative pressure bottle (12) serves as the power for the sampling bottle (14) to draw in water samples. An electric control valve is provided on the connecting pipe (16), which controls the connection between the negative pressure bottle (12) and the sampling bottle (14).

9. The water sampling device based on a drone according to claim 8, characterized in that, The bottom of the connecting seat (6) is provided with a first sealing cap (11) and a second sealing cap (13). The bottle mouth of the negative pressure bottle (12) is threaded to the first sealing cap (11), and the bottle mouth of the sampling bottle (14) is threaded to the second sealing cap (13). The sampling tube (15) passes through the second sealing cap (13) and communicates with the interior of the sampling bottle (14).

10. The UAV-based water sampling device according to claim 9, characterized in that, The negative pressure bottle (12) is pre-treated to be in an internal negative pressure state; or, The negative pressure mechanism also includes an air extraction component, which is connected to the negative pressure bottle (12) via a suction pipe. The air extraction component is configured to create a negative pressure state inside the negative pressure bottle (12) through an air extraction action.

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