A multi-rotor unmanned aerial vehicle water sample collection device

Abstract

The utility model discloses a kind of multi-rotor unmanned aerial vehicle water sample collection devices, including body and sampling mechanism, sampling mechanism is installed at the bottom of body, sampling mechanism includes top plate, sampling tube and bottom plate, sampling tube is provided with three and is respectively installed between top plate and bottom plate, the bottom of sampling tube is conical structure and is provided with water inlet, the inside of sampling tube is vertically installed with adjusting rod, the lower end of adjusting rod is installed with piston plate.The utility model realizes multi-point or stratified sampling, high efficiency: by setting three independent sampling tubes, and by a motor two driving triangular adjusting block sequentially triggers, in the process of one flight hovering, three different depths or different positions water sample can be collected in time, sequentially according to preset program.This greatly improves the sampling efficiency of single flight task, avoids unmanned aerial vehicle multiple take-off or movement, provides more abundant, more contrastive sample data for water environment research.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a water sampling device for a multi-rotor UAV. Background Technology

[0002] With the increasing demands for environmental protection and water resource management, water sampling and analysis of lakes, rivers, reservoirs, and other water bodies have become increasingly important. Traditional water sampling methods often involve manual rowing or the use of large vessels, which are limited by low efficiency, high cost, high risk (especially under adverse hydrological or weather conditions), and difficulty in accessing remote water areas. In recent years, multi-rotor unmanned aerial vehicle (UAV) technology has been explored for application in the field of water sampling due to its high mobility, lack of terrain limitations, and operational flexibility.

[0003] Existing UAV sampling devices typically have several shortcomings: First, most devices can only perform single-shot or single-point sampling, resulting in a limited number of samples acquired in a single flight mission and low efficiency. Second, the sampling process may significantly interfere with the UAV's flight attitude, affecting flight safety and sampling accuracy. Third, the opening and closing mechanisms of the sampling devices may be complex, increasing weight and failure rate, or easily causing water disturbance during sampling, leading to unrepresentative samples. Furthermore, the inconvenience of installing and disassembling the device also affects the efficiency of fieldwork. Therefore, a multi-rotor UAV water sampling device is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a multi-rotor unmanned aerial vehicle (UAV) water sampling device, which solves several problems: First, most devices can only perform single-shot or single-point sampling, resulting in a limited number of samples collected in a single flight mission and low efficiency; second, the sampling process may significantly interfere with the UAV's flight attitude, affecting flight safety and sampling accuracy; third, the opening and closing mechanisms of the sampling device may be complex, increasing weight and failure rate, or easily causing water disturbance during sampling, leading to unrepresentative samples. Furthermore, the inconvenience of installing and disassembling the device also affects the efficiency of fieldwork.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-rotor unmanned aerial vehicle (UAV) water sampling device, comprising a body and a sampling mechanism. The sampling mechanism is installed at the bottom of the body and includes a top plate, sampling tubes, and a bottom plate. Three sampling tubes are provided and installed between the top plate and the bottom plate respectively. The bottom of each sampling tube has a conical structure and an inlet hole. An adjusting rod is vertically installed inside the sampling tube. A piston plate is installed at the lower end of the adjusting rod. The upper end of the adjusting rod extends into the top plate and is fixed with a push plate. A push block is installed on one side of the bottom of the push plate. A second motor is installed in the middle of the top surface of the top plate. The power output end of the second motor extends into the top plate and is connected to an adjusting block. The adjusting block has a triangular structure.

[0008] As a further preferred embodiment of this utility model, a positioning plate is fixedly installed inside the sampling tube. The positioning plate has a connecting hole in the middle and is sleeved on the adjusting rod through the connecting hole. A second spring is sleeved on the adjusting rod. The upper end of the second spring is connected to the bottom of the positioning plate, and the lower end of the second spring is connected to the piston plate.

[0009] As a further preferred embodiment of this utility model, a lower fixing rod is vertically installed on the top of the top plate, and the upper surface of the lower fixing rod is provided with a threaded structure.

[0010] As a further preferred embodiment of this utility model, an upper fixing rod is vertically fixed at the bottom of the machine body, and a screw sleeve is rotatably installed at the lower end of the upper fixing rod. The screw sleeve is threadedly connected to the lower fixing rod. A fixing plate is provided on the surface of the upper fixing rod, and a spring is sleeved on the upper fixing rod. The upper end of the spring is connected to the bottom of the fixing plate, and the lower end of the spring is connected to the upper end of the screw sleeve.

[0011] As a further preferred embodiment of this utility model, an arm is fixedly installed on the outer wall of the body, and a motor is fixed at the end of the arm, with the power output end of the motor connected to an organic wing.

[0012] (III) Beneficial Effects

[0013] This invention provides a water sampling device for a multi-rotor unmanned aerial vehicle (UAV). It has the following beneficial effects:

[0014] This invention enables multi-point or stratified sampling with high efficiency: by setting up three independent sampling tubes, and having a triangular adjustment block driven by a motor trigger them sequentially, the device can collect water samples from three different depths or locations according to a preset program during a single flight hover. This greatly improves the sampling efficiency of a single flight mission, avoids multiple take-offs, landings, or movements of the UAV, and provides richer and more comparative sample data for water environment research.

[0015] The sampling process is stable and has minimal interference with the drone: Since the three sampling tubes are activated sequentially rather than simultaneously, the resulting water resistance and reaction force on the drone are phased and small in magnitude, avoiding the risk of the drone losing control due to a sudden, huge impact.

[0016] Excellent sealing and strong sample representativeness: The conical structure at the bottom of the sampling tube and the design of the piston plate ensure that the water inlet is closed during non-sampling phases. It only opens when the piston plate is lifted, effectively preventing the mixing of other water bodies during drone flight or during sinking at different water layers. This ensures that the collected water sample truly comes from the preset target water layer, guaranteeing the accuracy and representativeness of the sample.

[0017] Easy to install and disassemble: The entire sampling mechanism can be quickly and securely installed onto or removed from the UAV body via a threaded connection of the upper fixing rod, screw sleeve, and lower fixing rod. This modular design facilitates equipment transportation, maintenance, and subsequent sample retrieval, improving the convenience of fieldwork. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the multi-rotor UAV water sampling device of this utility model;

[0019] Figure 2 This is an external structural diagram of the sampling mechanism described in this utility model;

[0020] Figure 3 This is a diagram showing the internal structure of the sampling mechanism described in this utility model.

[0021] In the diagram: 1. Body; 2. Arm; 3. Wing; 4. Motor 1; 5. Sampling mechanism; 6. Lower fixing rod; 7. Threaded structure; 8. Fixing plate; 9. Upper fixing rod; 10. Spring 1; 11. Screw sleeve; 12. Motor 2; 13. Top plate; 14. Sampling tube; 15. Base plate; 16. Push plate; 17. Adjusting rod; 18. Water inlet; 19. Piston plate; 20. Spring 2; 21. Positioning plate; 22. Push block; 23. Adjusting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3This utility model provides a technical solution: a multi-rotor unmanned aerial vehicle (UAV) water sampling device, including a body 1 and a sampling mechanism 5. The sampling mechanism 5 is installed at the bottom of the body 1 and includes a top plate 13, sampling tubes 14, and a bottom plate 15. Three sampling tubes 14 are provided and installed between the top plate 13 and the bottom plate 15 respectively. The bottom of the sampling tube 14 has a conical structure and is provided with a water inlet hole 18. An adjusting rod 17 is vertically installed inside the sampling tube 14, and a piston plate is installed at the lower end of the adjusting rod 17. 19. The upper end of the adjusting rod 17 extends into the top plate 13 and is fixed with a push plate 16. A push block 22 is installed on one side of the bottom of the push plate 16. A motor 22 is installed in the middle of the top surface of the top plate 13. The power output end of the motor 22 extends into the top plate 13 and is connected to an adjusting block 23. The adjusting block 23 has a triangular structure and allows for sequential triggering and multiple sampling: by driving the triangular adjusting block 23 to rotate through one motor 22, three push blocks 22 can be pushed in sequence, thereby sequentially controlling the opening of the three sampling tubes 14. This allows the device to collect three independent water samples in one hover, achieving high-efficiency, multi-point, or stratified sampling. The piston plate 19 at the bottom of the sampling tube 14 closes the water inlet 18 in its natural state and only opens when actively pulled up, effectively preventing the mixing of water from different water layers during non-sampling stages and ensuring the purity and representativeness of the samples.

[0024] In a further improvement, a positioning plate 21 is fixedly installed inside the sampling tube 14. The positioning plate 21 has a connecting hole in its middle and is fitted onto the adjusting rod 17 through the connecting hole. A second spring 20 is fitted onto the adjusting rod 17. The upper end of the second spring 20 is connected to the bottom of the positioning plate 21, and the lower end of the second spring 20 is connected to the piston plate 19. The second spring 20 allows the piston plate 19 to automatically move downwards under the spring force after the adjusting block 23 rotates and releases the thrust on the push block 22, thus resealing the water inlet hole 18. This process requires no additional power, achieving automatic and reliable closure.

[0025] Further improvements include a lower fixing rod 6 vertically mounted on the top of the top plate 13, with a threaded structure 7 on the upper surface of the lower fixing rod 6. The lower fixing rod 6 and its threaded structure 7 provide a standardized and quick-connect interface for the entire sampling mechanism 5. This allows the sampling mechanism 5 to be easily installed and disassembled with the UAV body 1 as an independent module.

[0026] In a further improvement, an upper fixing rod 9 is vertically fixed to the bottom of the body 1. A threaded sleeve 11 is rotatably installed at the lower end of the upper fixing rod 9, and the threaded sleeve 11 is threadedly connected to the lower fixing rod 6. A fixing plate 8 is provided on the surface of the upper fixing rod 9, and a spring 10 is sleeved on the upper fixing rod 9. The upper end of the spring 10 is connected to the bottom of the fixing plate 8, and the lower end of the spring 10 is connected to the upper end of the threaded sleeve 11. By rotating the threaded engagement between the threaded sleeve 11 and the lower fixing rod 6, a quick and secure connection and separation between the sampling mechanism 5 and the UAV can be achieved, greatly improving the convenience of field operations.

[0027] Further improvements include the addition of an arm 2 fixedly mounted on the outer wall of the fuselage 1, with a motor 4 fixed to the end of the arm 2. The power output of the motor 4 is connected to an wing 3. This part constitutes the core flight system of the multi-rotor UAV, providing the entire water sampling device with the ability to maneuver in the air and hover for positioning, enabling it to reach waters that are difficult for humans to access for operations. This is the foundation for achieving UAV sampling.

[0028] Working Principle: Under the control of the flight control system, the UAV is propelled by motor 4, which drives the wings 3 to generate lift, allowing it to fly to and hover stably above the target sampling point. The UAV descends slowly, immersing the sampling mechanism 5 into the target water layer. During this process, the resistance at the bottom of the sampling tube 14 is transmitted to the screw sleeve 11 through the base plate 15, top plate 13, and lower fixing rod 6, compressing the spring 10. The deformation of the spring 10 effectively buffers the impact of water entry, maintaining the stability of the body 1. Once the UAV is stably hovering at the sampling depth, the ground operator or the onboard controller issues a command to start motor 2 12. Motor 2 12 drives the triangular adjusting block 23 to rotate slowly. When one corner of the adjusting block 23 rotates to contact a push block 22, it pushes the push block 22 upward. The push block 22 drives the push plate 16 and adjusting rod 17 to move upward together, compressing the spring 2 20 and lifting the connected piston plate 19. Piston plate 19 moves away from the inlet hole 18 at the bottom of sampling tube 14. At this point, the sampling tube 14 is connected internally and externally. External water pressure drives water to flow into the tube from the inlet hole 18, completing the water sample collection. As adjusting block 23 continues to rotate, its tip passes the highest point of push block 22, and the upward thrust on push block 22 disappears. At this time, the compressed spring 20 releases its elastic potential energy, pushing piston plate 19 downward until it tightly seals the inlet hole 18 again, and sampling of sampling tube 14 ends. Subsequently, the next corner of adjusting block 23 will approach and trigger push block 22 of the next sampling tube 14, repeating the above process until all three sampling tubes 14 have completed sampling in sequence. After sampling is completed, the drone ascends and returns. After landing, the operator can rotate screw sleeve 11 to remove the entire sampling mechanism 5 from the body 1. In the laboratory or on-site, the collected, unmixed water samples can be easily taken from each sampling tube 14 for analysis.

[0029] The components of this utility model are: 1. Body; 2. Arm; 3. Wing; 4. Motor 1; 5. Sampling mechanism; 6. Lower fixing rod; 7. Threaded structure; 8. Fixing plate; 9. Upper fixing rod; 10. Spring 1; 11. Screw sleeve; 12. Motor 2; 13. Top plate; 14. Sampling tube; 15. Base plate; 16. Push plate; 17. Adjusting rod; 18. Water inlet; 19. Piston plate; 20. Spring 2; 21. Positioning plate; 22. Push block; 23. Adjusting block. All components are general standard parts or parts known to those skilled in the art, and their structure and principle are based on this technology. The technical specifications of this invention can be obtained from technical manuals or conventional experimental methods. The problem addressed by this invention is that existing UAV sampling devices typically have several shortcomings: First, most devices can only perform single-shot or single-point sampling, resulting in a limited number of samples acquired in a single flight mission and low efficiency. Second, the sampling process may significantly interfere with the UAV's flight attitude, affecting flight safety and sampling accuracy. Third, the opening and closing mechanisms of the sampling device may be complex, increasing weight and failure rate, or easily causing water disturbance during sampling, leading to unrepresentative samples. Furthermore, the inconvenience of installing and disassembling the device also affects the efficiency of fieldwork. This invention, through the combination of the aforementioned components, achieves multi-point or layered sampling with high efficiency: By setting three independent sampling tubes 14, and having a motor 12 drive a triangular adjusting block 23 to trigger sequentially, this device can collect water samples from three different depths or locations according to a preset program during a single flight hover. This greatly improves the sampling efficiency of a single flight mission, avoids multiple UAV takeoffs, landings, or movements, and provides richer and more comparative sample data for water environment research. The sampling process is stable and has minimal interference with the drone: Since the three sampling tubes are activated sequentially rather than simultaneously, the resulting water resistance and reaction force on the drone are phased and small in magnitude, avoiding the risk of the drone losing control due to a sudden, huge impact.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-rotor unmanned aerial vehicle water sample collection device, comprising a body (1) and a sampling mechanism (5), characterized in that: The sampling mechanism (5) is installed at the bottom of the body (1). The sampling mechanism (5) includes a top plate (13), a sampling tube (14) and a bottom plate (15). There are three sampling tubes (14) installed between the top plate (13) and the bottom plate (15). The bottom of the sampling tube (14) is conical and has a water inlet hole (18). An adjusting rod (17) is vertically installed inside the sampling tube (14). A piston plate (19) is installed at the lower end of the adjusting rod (17). The upper end of the adjusting rod (17) extends into the top plate (13) and is fixed with a push plate (16). A push block (22) is installed on one side of the bottom of the push plate (16). A second motor (12) is installed in the middle of the top surface of the top plate (13). The power output end of the second motor (12) extends into the top plate (13) and is connected to an adjusting block (23). The adjusting block (23) is triangular in shape.

2. The multi-copter unmanned aerial vehicle water sampling device of claim 1, wherein: A positioning plate (21) is fixedly installed inside the sampling tube (14). The positioning plate (21) has a connecting hole in the middle and is sleeved on the adjusting rod (17) through the connecting hole. A second spring (20) is sleeved on the adjusting rod (17). The upper end of the second spring (20) is connected to the bottom of the positioning plate (21), and the lower end of the second spring (20) is connected to the piston plate (19).

3. The multi-copter unmanned aerial vehicle water sampling device of claim 1, wherein: A lower fixing rod (6) is vertically installed on the top of the top plate (13), and a threaded structure (7) is provided on the upper surface of the lower fixing rod (6).

4. The multi-copter unmanned aerial vehicle water sampling device of claim 1, wherein: The bottom of the body (1) is vertically fixed with an upper fixing rod (9). A screw sleeve (11) is rotatably installed at the lower end of the upper fixing rod (9). The screw sleeve (11) is threadedly connected to the lower fixing rod (6). A fixing plate (8) is provided on the surface of the upper fixing rod (9). A spring (10) is sleeved on the upper fixing rod (9). The upper end of the spring (10) is connected to the bottom of the fixing plate (8), and the lower end of the spring (10) is connected to the upper end of the screw sleeve (11).

5. The multi-copter unmanned aerial vehicle water sampling device of claim 1, wherein: An arm (2) is fixedly installed on the outer wall of the body (1), and a motor (4) is fixed at the end of the arm (2). The power output end of the motor (4) is connected to the wing (3).

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