Water sample collecting device combined with unmanned aerial vehicle platform and water quality monitoring method

Abstract

This invention relates to the field of water sampling technology, and in particular to a water sampling device and water quality monitoring method combining a drone platform. The water sampling device includes a drone and a sampling vessel, with a tow rope connecting them. The sampling vessel includes a hull and a sampling mechanism. The hull comprises a forward section, a mid-section, and a stern section, with a water intake in the mid-section. The sampling mechanism includes a water storage chamber, a sealed chamber, a sampling tube, and a storage component. The sampling tube includes a first water inlet pipe and a second water inlet pipe. When the drone tows the sampling vessel, the first water inlet pipe supplies water to the water storage chamber, and the second water inlet pipe supplies water to the storage component. This invention utilizes a drone as a power platform, allowing water sampling to be completed while the sampling vessel is towed by a tow rope. Compared to existing technologies, this eliminates the need for personnel to board the vessel for manual sampling, fundamentally eliminating safety risks and significantly improving the efficiency of water sampling.

Description

Technical Field

[0001] This invention relates to the field of water sampling technology, and in particular to a water sampling device and water quality monitoring method that combines an unmanned aerial vehicle (UAV) platform. Background Technology

[0002] In the surface water environment management and impact assessment system, water quality monitoring at the discharge control section downstream of the discharge outlet is a core task. The water quality data from this section is crucial for directly determining whether the discharge behavior meets pollutant discharge standards and assessing whether its environmental impact on the receiving water body is controllable. According to environmental regulations, to accurately reflect the mixing and distribution of pollutants at the river section, multiple sampling points are often set at intervals along the control section to ensure that the water samples are sufficiently representative.

[0003] Currently, the most common method for water quality monitoring at control sections is still manual boat sampling. The process involves monitoring personnel traveling in inflatable boats or small vessels, carrying sampling equipment, to pre-designated sampling points. They then manually collect water samples from the surface and even to a certain depth using a water sampler, recording and preserving the data on-site. However, this manual boat sampling method has many drawbacks. Firstly, manual sampling is extremely inefficient; secondly, it carries significant safety risks.

[0004] Therefore, improving sampling efficiency and reducing safety risks for workers are urgent technical problems to be solved in water sampling operations for water quality monitoring at control sections. Summary of the Invention

[0005] The purpose of this invention is to address the problem of how to improve sampling efficiency and reduce the safety risks to operators in water sampling operations for water quality monitoring at control sections using existing technologies, by providing a water sampling device and water quality monitoring method that combines an unmanned aerial vehicle (UAV) platform.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A water sampling device combining an unmanned aerial vehicle (UAV) platform includes an UAV and a sampling vessel. A tow rope connects the UAV and the sampling vessel. The UAV is used to tow the sampling vessel along a predetermined path on the water surface. The sampling vessel includes a hull and a sampling mechanism. The hull includes a front section, a middle section, and a stern section. The tow rope is connected to the front section, the sampling mechanism is installed in the stern section, and the middle section is provided with a water intake.

[0008] The sampling mechanism includes a water storage chamber, a sealed chamber, a sampling tube, and a storage component. The water storage chamber is located at the bottom of the hull and is completely submerged in water. The sealed chamber is located above the water storage chamber and is connected to it. The sampling tube includes a first water inlet pipe and a second water inlet pipe. The inlet ends of the first and second water inlet pipes extend into the water through the water intake port, and the outlet ends of the first and second water inlet pipes are located inside the sealed chamber. When the UAV tows the sampling vessel, the first water inlet pipe supplies water to the water storage chamber, and the second water inlet pipe supplies water to the storage component.

[0009] The storage component includes a floating base, a water storage pipe, and a limiting rod. The floating base floats on the water surface inside the water storage chamber. The water storage pipe is vertically connected to the floating base and is composed of multiple water storage units. The water storage units are evenly spaced along the height direction and each water storage unit has a receiving cavity inside. The side of each water storage unit facing the second water inlet pipe has an inlet window for supplying water samples. The limiting rod is located at the top of the water storage pipe. A limiting sleeve is located at the top of the sealed chamber. The limiting sleeve communicates with the external environment. The inner diameter of the limiting sleeve matches the outer diameter of the limiting rod. The limiting rod passes through the limiting sleeve, and when the water level in the water storage chamber is at its lowest, the top of the limiting rod is still inside the limiting sleeve.

[0010] Preferably, a positioning sleeve is also provided in the water storage chamber, which divides the water storage chamber into an inner water storage area and an outer water storage area. The inner water storage area is the internal area of ​​the positioning sleeve. The positioning sleeve is spaced apart from the bottom of the water storage chamber, so that the inner water storage area and the outer water storage area are connected. The cross-sectional shape of the positioning sleeve is rectangular, and the shape of the floating base is adapted to the cross-sectional shape of the positioning sleeve. The floating base floats up and down inside the positioning sleeve.

[0011] Preferably, the top opening elevation of the positioning sleeve is greater than the top opening elevation of the water storage chamber, the elevation of the liquid outlet end of the first water inlet pipe corresponds to the elevation of the opening surface of the outer water storage area, and the elevation of the liquid outlet end of the second water inlet pipe corresponds to the elevation of the opening surface of the inner water storage area.

[0012] Preferably, the floating base is also provided with several water-permeable holes.

[0013] Preferably, the water storage unit includes an inlet chamber section and a storage chamber section, the inlet window is disposed on the inlet chamber section, the storage chamber section is disposed below the inlet chamber section, the outer diameter of the storage chamber section is smaller than the outer diameter of the inlet chamber section, and the storage chamber section is disposed on the side away from the second water inlet pipe.

[0014] Preferably, a sample retention tube is provided inside the liquid storage chamber section for storing water samples; a support member is provided at the bottom of the liquid storage chamber section, and the sample retention tube is connected to the support member; the support member has an unloaded state and a ballasted state; when the water sample does not fill the sample retention tube, the support member is in an unloaded state, and at this time the top of the sample retention tube extends beyond the top opening of the liquid storage chamber section; when the water sample fills the sample retention tube, the support member is in a ballasted state, and at this time the top of the sample retention tube falls back below the opening of the liquid storage chamber section;

[0015] The bottom of the inlet chamber section is also provided with a first limiting device, which includes a first baffle and a spring pusher. The first baffle is horizontally arranged, and the spring pusher applies a horizontal force to the first baffle to push it to slide away from the second water inlet pipe. When the carrier is in an unloaded state, one end of the first baffle abuts against the sample tube, and the other end extends beyond the liquid outlet of the second water inlet pipe. When the carrier changes to a ballast state, the limiting of the sample tube on the first baffle is released, and the spring pusher pushes the first baffle to slide away from the second water inlet pipe, closing the opening of the sample tube. At this time, a gap is formed between the first baffle and the second water inlet pipe.

[0016] Preferably, the first baffle is provided with a storage groove on one side corresponding to the sample tube, and a cover is provided in the storage groove. When the spring pusher pushes the first baffle to slide away from the second water pipe, the cover can be pushed by the first baffle to the opening of the liquid storage chamber section to close the opening of the sample tube.

[0017] Preferably, an abutment plate is provided on the outlet end of the second water inlet pipe, and the abutment plate is rotatably connected to the second water inlet pipe, with the end of the abutment plate extending beyond the end of the second water inlet pipe; a positioning plate is also vertically provided at the bottom of the liquid inlet chamber section, the length of the positioning plate matching the length of the liquid storage chamber section, and the length of the abutment plate extending beyond the outlet end of the second water inlet pipe being greater than the spacing between the positioning plate and the second water inlet pipe; the positioning plate is also provided with several slots, which are used to increase the surface roughness of the positioning plate; when the abutment plate enters the range of the positioning plate, the abutment plate is pushed by the positioning plate and rotates, forming an acute angle fit with the central axis of the second water inlet pipe.

[0018] Preferably, the cap is further provided with a drain pipe; the support member includes a second baffle, a sealing piston and a force transmission rod, the top of the inlet chamber pipe section is provided with a first base, the second baffle is rotatably connected to the first base, and the rotation axis of the second baffle is perpendicular to the central axis of the second water inlet pipe;

[0019] The blocking piston is snapped into the bottom of the sample tube. A second base is provided on the second baffle. A third base is provided on the blocking piston. One end of the force transmission rod is rotatably connected to the third base, and the other end is rotatably connected to the second base. The rotation axis of the force transmission rod is parallel to the rotation axis of the second baffle.

[0020] The top of the liquid inlet section is also provided with a limiting spring. When the bearing member is under ballast, the end of the limiting spring abuts against the second baffle. At this time, the limiting spring is compressed, and the side of the second baffle corresponding to the second water inlet pipe tilts upward, and the end of the second baffle extends beyond the liquid outlet end of the second water inlet pipe.

[0021] As the water storage pipe continues to float upwards, when the second water inlet pipe comes into contact with the second baffle, the second baffle is squeezed by the second water inlet pipe and rotates downwards. At this time, the side of the second baffle corresponding to the sample tube gradually tilts up, the second baffle separates from the limiting spring, and the force transmission rod pushes the sealing piston to move upwards inside the sample tube. When the second baffle rotates downwards to the maximum angle, the distance between the second baffle and the second water inlet pipe reaches its maximum value, at which point the second baffle can pass over the second water inlet pipe.

[0022] Preferably, the liquid inlet section and the liquid storage section are detachably connected; the second baffle and the first base are detachably connected.

[0023] A water quality monitoring method includes the following steps:

[0024] Step 1: Preparation: Plan the sampling route and sampling points based on the river's hydrological conditions;

[0025] Step 2, Water Sampling: Using the water sampling device described above, navigate along the planned sampling path to collect water samples from the sampling points.

[0026] Step 3: Water quality testing: Send the collected water samples to the laboratory and use water quality testing equipment to test various indicators in the water samples in order to obtain water quality data;

[0027] Step 4: Data Analysis: Organize and analyze the obtained water quality data, compare it with relevant water quality standards, assess whether the sewage discharge behavior meets the pollutant discharge standards, and whether its environmental impact on the receiving water body is controllable.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. The water sampling device of the present invention, which combines a drone platform, utilizes the drone as a power platform to collect water samples while towing a sampling vessel via a traction rope. Compared with existing technologies, it eliminates the need for personnel to board the vessel for manual sampling, fundamentally eliminating safety risks and significantly improving the efficiency of water sampling. Furthermore, when the drone tows the sampling vessel for water sampling, as the water level in the storage tank rises, the floating base supporting the water storage pipe floats upward, allowing the water storage units at different heights to align sequentially with the outlet end of the second water inlet pipe. This enables the collection of water samples from different locations, which not only improves the efficiency of water sampling but also allows for independent storage of water samples from each sampling point, avoiding cross-contamination. Moreover, using the drone to tow the sampling vessel for water sampling reduces the disturbance to the water surface caused by the airflow generated by the drone's rotor rotation, thereby ensuring the representativeness and authenticity of the collected surface water samples.

[0030] On the other hand, by setting the water intake in the middle section, the floating objects on the water surface can be pushed away during the navigation of the carrying vessel, so as to avoid the floating objects blocking the first water intake pipe and / or the second water intake pipe, and to ensure the smoothness of water sample collection; at the same time, it can also avoid the floating objects from contaminating the water sample, and ensure the accuracy and reliability of the collected water sample.

[0031] 2. The water sampling device combined with an unmanned aerial vehicle platform described in this invention is configured such that when the water sample does not fill the sample retention tube, the end of the first baffle extends beyond the outlet end of the second water inlet pipe. Thus, when the water storage tube floats downwards due to water fluctuations in the storage chamber, the second water inlet pipe, after moving upwards away from the inlet window, can be guided by the first baffle to continue flowing the overflowing target water sample into the sample retention tube. When the water storage tube floats upwards due to water fluctuations in the storage chamber, the first baffle can abut against the second water inlet pipe, preventing the water storage tube from continuing to float upwards and avoiding the second water inlet pipe moving downwards away from the inlet window. This ensures that the water sample can be fully collected into the sample retention tube, guaranteeing the effectiveness of the water sampling operation.

[0032] 3. The water sampling device combined with an unmanned aerial vehicle platform described in this invention, when the second water inlet pipe abuts against the second baffle, the second baffle rotates downward under pressure. At this time, the side of the second baffle corresponding to the sample retention tube gradually tilts upward. The force transmission rod first applies a pushing force to the sample retention tube, causing the entire sample retention tube to move upward, eliminating the gap between the sample retention tube and the first baffle. During this process, the cap is pressed into the opening of the sample retention tube, achieving the sealing of the sample retention tube opening. As the second baffle continues to rotate downward, the force transmission rod pushes the sealing piston to move upward in the sample retention tube, discharging the air remaining in the sample retention tube through the drain pipe, eliminating the cavity formed in the sample retention tube, and preventing the water sample from oscillating in the sample retention tube. This effectively suppresses the volatilization and dispersion of volatile organic compounds in the water sample, ensuring the accuracy of the volatile organic compound content in the water sample.

[0033] When the second baffle rotates downward to its maximum angle and passes the second water inlet pipe, the sample retention tube slides downward under its own weight until the second baffle re-engages with the limiting spring. At this time, the second baffle can be used to prevent the water storage tube from floating downward and to prevent the second water inlet pipe from detaching from the liquid inlet window. This further ensures that the water sample can be fully collected into the sample retention tube, thus improving the effectiveness of the water sample collection operation. Attached Figure Description

[0034] Figure 1 This is a schematic cross-sectional view of a water sampling device that integrates an unmanned aerial vehicle (UAV) platform.

[0035] Figure 2 yes Figure 1 A schematic diagram of the structure of A in the middle;

[0036] Figure 3 This is a structural schematic diagram when the load-bearing component is under ballast load.

[0037] Figure 4 yes Figure 3 A schematic diagram of the structure of B in the middle;

[0038] Figure 5 yes Figure 3 A schematic diagram of the structure of C;

[0039] Figure 6 This is a schematic diagram of the structure in which the abutment plate and the locking plate work together to restrict the downward floating of the water storage pipe;

[0040] Figure 7 This is a schematic diagram of the structure in which the second water inlet pipe abuts against the second baffle, forcing it to rotate downwards.

[0041] In the diagram, the markings are: 1-UAV, 2-Sampling vessel, 3-Torsion rope, 4-Hull, 5-Sampling mechanism, 6-Front section, 7-Middle section, 8-Tail section, 9-Water intake, 10-Water storage chamber, 11-Sealed chamber, 12-Sampling pipe, 13-Storage component, 14-First water inlet pipe, 15-Second water inlet pipe, 16-Floating base, 17-Water storage pipe body, 18-Limiting rod, 19-Water storage unit, 20-Liquid inlet window, 21-Limiting sleeve. 22-Positioning sleeve, 24-Inlet chamber section, 25-Storage chamber section, 26-Sample tube, 27-Bearing component, 28-First limiting device, 29-First baffle, 30-Spring pusher, 31-Placement slot, 32-Cap, 33-Abutting plate, 34-Positioning plate, 35-Drain pipe, 36-Second baffle, 37-Blocking piston, 38-Force transmission rod, 39-First base, 40-Second base, 41-Limiting compression spring, 42-Third base. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings.

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] Example 1: As Figure 1 and Figure 3 As shown, the water sampling device of the present invention, which combines a UAV 1 platform, includes a UAV 1 and a sampling vessel 2. A tow rope 3 is provided between the UAV 1 and the sampling vessel 2 to connect them. The UAV 1 is used to tow the sampling vessel 2 to travel along a set path on the water surface. The sampling vessel 2 includes a supporting hull 4 and a sampling mechanism 5. The supporting hull 4 includes a front section 6, a middle section 7 and a rear section 8. The tow rope 3 is connected to the front section 6, the sampling mechanism 5 is installed in the rear section 8, and the middle section 7 is provided with a water intake 9.

[0045] The sampling mechanism 5 includes a water storage chamber 10, a sealed chamber 11, a sampling tube 12, and a storage component 13. The water storage chamber 10 is located at the bottom of the hull and is completely submerged in water. The sealed chamber 11 is located above the water storage chamber 10 and is connected to it. The sampling tube 12 includes a first water inlet pipe 14 and a second water inlet pipe 15. The inlet ends of the first water inlet pipe 14 and the second water inlet pipe 15 extend into the water through the water intake port 9, and the outlet ends of the first water inlet pipe 14 and the second water inlet pipe 15 are located inside the sealed chamber 11. When the UAV 1 tows the sampling vessel 2, the first water inlet pipe 14 supplies water to the water storage chamber 10, and the second water inlet pipe 15 supplies water to the storage component 13.

[0046] The storage component 13 includes a floating base 16, a water storage pipe 17, and a limiting rod 18. The floating base 16 floats on the water surface inside the water storage chamber 10. The water storage pipe 17 is vertically connected to the floating base 16 and is composed of multiple water storage units 19. The water storage units 19 are evenly spaced along the height direction and have a receiving cavity inside. The side of each water storage unit 19 faces the second water inlet pipe 15. An inlet window 20 is provided for the inflow of water samples; a limiting rod 18 is provided at the top of the water storage pipe 17, and a limiting sleeve 21 is provided at the top of the sealed chamber 11. The limiting sleeve 21 is connected to the external environment, and the inner diameter of the limiting sleeve 21 matches the outer diameter of the limiting rod 18. The limiting rod 18 passes through the limiting sleeve 21, and when the water level in the water storage chamber 10 is at its lowest, the top of the limiting rod 18 is still inside the limiting sleeve 21.

[0047] The water sampling device of this invention, which combines a UAV 1 platform, utilizes the UAV 1 as a power platform to collect water samples while towing the sampling vessel 2 via the traction rope 3. Compared with existing technologies, it eliminates the need for personnel to board the vessel for manual sampling, fundamentally eliminating safety risks and significantly improving the efficiency of water sampling. Furthermore, when the UAV 1 tows the sampling vessel 2 for water sampling, as the water level in the water storage chamber 10 rises, the floating base 16 supporting the water storage pipe 17 floats upward as a whole, thereby aligning the water storage units 19 at different heights sequentially with the liquid outlet of the second water inlet pipe 15. This enables the collection of water samples from different locations, which not only improves the efficiency of water sampling but also allows for independent storage of water samples from each sampling point, avoiding cross-contamination. Moreover, using the UAV 1 to tow the sampling vessel 2 for water sampling reduces the disturbance to the water surface caused by the airflow generated by the UAV 1's rotor rotation, thus ensuring the representativeness and authenticity of the collected surface water samples.

[0048] On the other hand, the water intake 9 is set in the middle section 7. During the navigation of the carrying hull 4, it can push away floating objects on the water surface to avoid them blocking the first water intake pipe 14 and / or the second water intake pipe 15, thus ensuring the smoothness of water sample collection. At the same time, it can also prevent floating objects from contaminating the water sample, ensuring the accuracy and reliability of the collected water sample.

[0049] Specifically, in this embodiment, when the UAV 1 tows the sampling vessel 2 to collect water samples, the first water inlet pipe 14 and the second water inlet pipe 15 work together. The first water inlet pipe 14 continuously introduces water into the water storage chamber 10, causing the water level in the water storage chamber 10 to rise continuously, while the second water inlet pipe 15 transports the introduced water samples to the storage component 13. As the water level in the water storage chamber 10 rises, the floating base 16 drives the water storage pipe body 17 to float up under the action of buoyancy. During this process, the water storage units 19 at different heights are aligned with the liquid outlet end of the second water inlet pipe 15 in sequence. In this way, different water storage units 19 can receive water samples at corresponding sampling points, realizing accurate collection of water samples at different points. Furthermore, in this embodiment, the limiting sleeve 21 is provided in the water storage chamber 10, and the limiting rod 18 is provided to cooperate with the limiting sleeve 21, which further optimizes the floating trajectory of the floating base 16, so that it rises stably in the vertical direction, thus ensuring the precise docking of the water storage unit 19 and the liquid outlet end of the second water inlet pipe 15.

[0050] The principle behind the continuous and automatic collection of multiple water samples in a single voyage in this plan is as follows:

[0051] During the process of the drone 1 towing the sampling vessel 2, the first water inlet pipe 14 continuously supplies water into the water storage chamber 10, causing the water level in the water storage chamber 10 to rise continuously. The floating base 16 gradually floats up with the rising water level, thereby causing the water storage pipe body 17 to float upward as a whole. Since the water storage units 19 are evenly spaced along the height direction, and each water storage unit 19 has an inlet window 20 on the side facing the second water inlet pipe 15 for water sample inflow, as the water storage pipe body 17 floats up, the water storage units 19 at different heights will sequentially align with the outlet end of the second water inlet pipe 15. When a water storage unit 19 at a certain height aligns with the outlet end of the second water inlet pipe 15, the water sample transported by the second water inlet pipe 15 will flow into the water storage unit 19 through the inlet window 20, realizing the collection of water sample at that point. As the voyage continues, the water level in the water storage chamber 10 continues to rise, and the water storage unit 19 at the next altitude will align with the liquid outlet of the second water inlet pipe 15 to collect water samples at the next location. This cycle repeats continuously, allowing for the continuous and automatic collection of water samples from multiple different locations during a single voyage.

[0052] As a preferred embodiment, based on the above method, a positioning sleeve 22 is further provided inside the water storage chamber 10. The positioning sleeve 22 divides the water storage chamber 10 into an inner water storage area and an outer water storage area. The inner water storage area is the internal region of the positioning sleeve 22. The positioning sleeve 22 is spaced apart from the bottom of the water storage chamber 10, so that the inner water storage area and the outer water storage area are connected. The cross-sectional shape of the positioning sleeve 22 is rectangular, and the shape of the floating base 16 is adapted to the cross-sectional shape of the positioning sleeve 22. The floating base 16 floats up and down inside the positioning sleeve 22. With this structural arrangement, the floating trajectory of the floating base 16 is further limited, avoiding its axial rotation and preventing the liquid inlet window 20 from being accurately aligned with the liquid outlet end of the second water inlet pipe 15, thereby improving the reliability of the water sampling device of the present invention.

[0053] As a preferred embodiment, based on the above method, the top opening elevation of the positioning sleeve 22 is greater than the top opening elevation of the water storage chamber 10, the elevation of the liquid outlet end of the first water inlet pipe 14 corresponds to the elevation of the opening surface of the outer water storage area, and the elevation of the liquid outlet end of the second water inlet pipe 15 corresponds to the elevation of the opening surface of the inner water storage area.

[0054] This structural design restricts the water flow introduced by the first water inlet pipe 14 from entering the water storage chamber 10 from the outer water storage area. This avoids the water flow directly impacting the floating base 16 and causing it to sway up and down, which would affect the total amount and accuracy of water sample collection. This further improves the stability of the water sample collection device of the present invention.

[0055] As a preferred embodiment, based on the above method, the floating base 16 is further provided with several water-permeable holes. With this structural arrangement, during the switching of the water storage unit 19, a portion of the water introduced into the inner water storage area by the second water inlet pipe 15 can flow back to the water storage chamber 10 through the water-permeable holes. This avoids water samples accumulating above the floating base 16, affecting its buoyancy, thereby further improving the practicality and reliability of the invention in actual use.

[0056] As a preferred embodiment, based on the above method, the water storage unit 19 further includes an inlet chamber section 24 and a storage chamber section 25. The inlet window 20 is disposed on the inlet chamber section 24, and the storage chamber section 25 is disposed below the inlet chamber section 24. The outer diameter of the storage chamber section 25 is smaller than the outer diameter of the inlet chamber section 24, and the storage chamber section 25 is disposed on the side away from the second water inlet pipe 15.

[0057] This structural design reduces water droplet splashing caused by the water flow impacting the storage chamber section 25 during the switching process of the water storage unit 19, thereby lowering the risk of non-target water samples mixing into the target water sample and further improving the purity and accuracy of the collected water samples. Simultaneously, setting the diameter of the inlet chamber section 24 to be larger than the diameter of the storage chamber section 25 is more conducive to water sample collection and can buffer the impact force of the water flow to a certain extent, allowing the water sample to flow more smoothly into the storage chamber section 25.

[0058] Example 2: As Figures 1 to 4 As shown, the water sampling device of the present invention, which is combined with a UAV platform, further includes, on the basis of the above-described method, a sample retention tube 26 provided inside the liquid storage chamber section 25, the sample retention tube 26 being used to retain water samples; a support member 27 is provided at the bottom of the liquid storage chamber section 25, and the sample retention tube 26 is connected to the support member 27; the support member 27 has an unloaded state and a ballasted state; when the water sample does not fill the sample retention tube 26, the support member 27 is in an unloaded state, at which time the top of the sample retention tube 26 extends beyond the top opening of the liquid storage chamber section 25; when the water sample fills the sample retention tube 26, the support member 27 is in a ballasted state, at which time the top of the sample retention tube 26 falls back below the opening of the liquid storage chamber section 25;

[0059] The bottom of the inlet chamber section 24 is also provided with a first limiting device 28. The first limiting device 28 includes a first baffle 29 and a spring pusher 30. The first baffle 29 is horizontally arranged, and the spring pusher 30 applies a horizontal force to the first baffle 29 to push it to slide away from the second water inlet pipe 15. When the bearing member 27 is in an unloaded state, one end of the first baffle 29 abuts against the sample tube 26, and the other end extends beyond the liquid outlet end of the second water inlet pipe 15. When the bearing member 27 changes to a ballast state, the limiting of the sample tube 26 on the first baffle 29 is released, and the spring pusher 30 pushes the first baffle 29 to slide away from the second water inlet pipe 15, closing the opening of the sample tube 26. At this time, a gap is formed between the first baffle 29 and the second water inlet pipe 15.

[0060] In this embodiment, Figure 2 yes Figure 1 The structural diagram of A is shown in the diagram of the first baffle contacting the sample tube when the system is unloaded. Figure 4 yes Figure 1 The structural diagram of B shows that when the bearing component changes to the ballast state, the spring pusher pushes the first baffle to slide away from the second water pipe, so that the cover is pushed to the opening of the liquid storage chamber pipe section.

[0061] In this embodiment, it is considered that when the sampling vessel 2 is sailing, the water in the water storage chamber 10 may be shaken due to factors such as surges and turbulence, which will cause the water storage pipe 17 to float up and down with the water fluctuations. In this situation, the second water inlet pipe 15 is difficult to keep within the inlet window 20, resulting in a reduction in the total amount of water sample collected into the sample retention tube 26, thus affecting the effectiveness of water sample collection. Based on this, in this embodiment, when the water sample does not fill the sample retention tube 26, the end of the first baffle 29 extends beyond the outlet end of the second water inlet pipe 15. Thus, when the water storage pipe 17 floats downward due to water fluctuations in the water storage chamber 10, after the second water inlet pipe 15 moves upward away from the inlet window 20, the first baffle 29 can guide the overflowing target water sample to continue flowing into the sample retention tube 26. When the water storage pipe 17 floats upward due to water fluctuations in the water storage chamber 10, the first baffle 29 can abut against the second water inlet pipe 15, preventing the water storage pipe 17 from continuing to float upward and avoiding the second water inlet pipe 15 moving downward away from the inlet window 20. In this way, the water sample can be fully collected into the sample retention tube 26, ensuring the effectiveness of the water sample collection operation.

[0062] As a preferred embodiment, based on the above method, a further provision is made: a storage groove 31 is provided on one side of the first baffle 29 corresponding to the sample retention tube 26, and a cover 32 is provided in the storage groove 31. When the spring pusher 30 pushes the first baffle 29 to slide away from the second water inlet pipe 15, the cover 32 can be pushed by the first baffle 29 to the opening of the liquid storage chamber section 25, thus sealing the opening of the sample retention tube 26. With this structural arrangement, when the other water storage units 19 are collecting water samples, it can prevent the water sample in the sample retention tube 26, which has already been sampled, from overflowing or becoming contaminated, further improving the quality and reliability of the collected water samples. In addition, the cover 32 can also reduce the contact between the outside air and the water sample in the sample retention tube 26 to a certain extent, reducing the possibility of chemical reactions such as oxidation of the water sample and ensuring the original properties of the water sample.

[0063] Example 3: As Figure 6 As shown, the water sampling device of the present invention, combined with a UAV platform, further includes, on the basis of the above-described method, an abutment plate 33 provided on the liquid outlet end of the second water inlet pipe 15, wherein the abutment plate 33 and the second water inlet pipe 15 are rotatably connected, and the end of the abutment plate 33 extends beyond the end of the second water inlet pipe 15; a locking plate 34 is also vertically provided at the bottom of the liquid inlet chamber section 24, the length of the locking plate 34 matching the length of the liquid storage chamber section 25, and the length of the abutment plate 33 extending beyond the liquid outlet end of the second water inlet pipe 15 being greater than the spacing width between the locking plate 34 and the second water inlet pipe 15; the locking plate 34 is also provided with several slots, which are used to increase the surface roughness of the locking plate 34; when the abutment plate 33 enters the range of the locking plate 34, the abutment plate 33 is pushed by the locking plate 34 and rotates, forming an acute angle engagement with the central axis of the second water inlet pipe 15.

[0064] In this embodiment, by using the abutment plate 33 and the locking plate 34 to cooperate, the downward floating of the water storage pipe 17 can be restricted. In this way, after the second water inlet pipe 15 moves downward away from the liquid inlet window 20, it can be prevented from corresponding with the water storage unit 19 that has completed sampling again. This prevents the mixing of non-target water samples into the water storage unit 19 that has completed sampling, thus preventing cross-contamination of the water samples and further improving the purity and accuracy of the collected water samples.

[0065] Specifically, in this embodiment, the abutment plate 33 is installed at the liquid outlet end of the second water inlet pipe 15 and is rotatably connected to the second water inlet pipe 15 (such as a hinge or bearing), allowing the abutment plate 33 to rotate around the connection point. The end of the abutment plate 33 extends beyond the end of the second water inlet pipe 15, forming a cantilever portion. When the water storage pipe body 17 floats normally, the abutment plate 33 contacts the locking plate 34 and rotates. The abutment plate 33 does not exert pressure on the locking plate 34, thus not hindering the normal floating of the water storage pipe body 17. However, when the water in the water storage chamber 10 fluctuates, causing the water storage pipe body 17 to tend to float downwards, the cantilever portion of the abutment plate 33 extending beyond the liquid outlet end of the second water inlet pipe 15 gradually abuts against the locking plate 34, applying pressure to the locking plate 34 and preventing the water storage pipe body 17 from continuing to float downwards.

[0066] Example 4: Figures 3 to 7 As shown, the water sampling device of the present invention, which is combined with the UAV platform, further includes a drain pipe 35 on the cover 32, in addition to the above-mentioned method; the bearing member 27 includes a second baffle 36, a sealing piston 37 and a force transmission rod 38, and a first base 39 is provided on the top of the liquid inlet pipe section 24. The second baffle 36 is rotatably connected to the first base 39, and the rotation axis of the second baffle 36 is perpendicular to the central axis of the second water inlet pipe 15.

[0067] The blocking piston 37 is snapped into the bottom of the sample retention tube 26. A second base 40 is provided on the second baffle 36, and a third base 42 is provided on the blocking piston 37. One end of the force transmission rod 38 is rotatably connected to the third base 42, and the other end is rotatably connected to the second base 40. The rotation axis of the force transmission rod 38 is parallel to the rotation axis of the second baffle 36.

[0068] The top of the liquid inlet section 24 is also provided with a limiting spring 41. When the bearing member 27 is under ballast, the end of the limiting spring 41 abuts against the second baffle 36. At this time, the limiting spring 41 is compressed, and the side of the second baffle 36 corresponding to the second water inlet pipe 15 tilts upward, and the end of the second baffle 36 extends beyond the liquid outlet end of the second water inlet pipe 15.

[0069] As the water storage pipe 17 continues to float upwards, when the second water inlet pipe 15 comes into contact with the second baffle 36, the second baffle 36 is squeezed by the second water inlet pipe 15 and rotates downwards. At this time, the side of the second baffle 36 corresponding to the sample retention tube 26 gradually tilts up, and the second baffle 36 separates from the limiting spring 41. The force transmission rod 38 pushes the sealing piston 37 to move upwards in the sample retention tube 26. When the second baffle 36 rotates downwards to the maximum angle, the distance between the second baffle 36 and the second water inlet pipe 15 reaches its maximum value. At this time, the second baffle 36 can pass over the second water inlet pipe 15.

[0070] Specifically, in this embodiment, when the second water inlet pipe 15 abuts against the second baffle 36, the second baffle 36 rotates downward under pressure. At this time, the side of the second baffle 36 corresponding to the sample retention tube 26 gradually tilts upward. The force transmission rod 38 first applies a pushing force to the sample retention tube 26, causing the sample retention tube 26 to move upward as a whole, eliminating the gap between the sample retention tube 26 and the first baffle 29. During this process, the cap 32 is pressed into the opening of the sample retention tube 26, achieving the sealing of the opening of the sample retention tube 26. As the second baffle 36 continues to rotate downward, the force transmission rod 38 pushes the sealing piston 37 to move upward in the sample retention tube 26, discharging the air remaining in the sample retention tube 26 through the drain pipe 35, eliminating the cavity formed in the sample retention tube 26, and preventing the water sample from oscillating in the sample retention tube 26. This effectively suppresses the volatilization and dispersion of volatile organic compounds in the water sample, ensuring the accuracy of the volatile organic compound content in the water sample.

[0071] When the second baffle 36 rotates downward to its maximum angle and passes the second water inlet pipe 15, the sample retention tube 26 slides downward under its own weight until the second baffle 36 contacts the limiting spring 41 again. At this time, the second baffle 36 can be used to prevent the water storage tube 17 from floating downward and to prevent the second water inlet pipe 15 from moving upward away from the liquid inlet window 20. This further ensures that the water sample can be fully collected into the sample retention tube 26, improving the effectiveness of the water sample collection operation.

[0072] It should be noted that the drain pipe 35 in this embodiment is equipped with a one-way valve. This one-way valve only allows air / water samples to be discharged from the sample retention tube 26, and does not allow external air / water samples to enter the sample retention tube 26. This can further ensure the airtightness of the water sample in the sample retention tube 26, preventing external air from mixing in and causing oxidation or other chemical reactions in the water sample, which would affect the stability of the components in the water sample and the accuracy of the detection results.

[0073] As a preferred embodiment, based on the above method, the inlet chamber segment 24 and the storage chamber segment 25 are further designed to be detachably connected; the second baffle 36 and the first base 39 are also designed to be detachably connected. This structural design facilitates the removal of the sample tube 26 after sampling, improving the practicality of the invention in actual use.

[0074] Example 5: Figures 1 to 7 As shown, the water quality monitoring method of the present invention includes the following steps:

[0075] Step 1: Preparation: Plan the sampling route and sampling points based on the river's hydrological conditions;

[0076] Step 2, Water Sampling: Using the water sampling device described above, navigate along the planned sampling path to collect water samples from the sampling points.

[0077] Step 3: Water quality testing: Send the collected water samples to the laboratory and use water quality testing equipment to test various indicators in the water samples in order to obtain water quality data;

[0078] Step 4: Data Analysis: Organize and analyze the obtained water quality data, compare it with relevant water quality standards, assess whether the sewage discharge behavior meets the pollutant discharge standards, and whether its environmental impact on the receiving water body is controllable.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water sample collection device integrated with a drone platform, characterized in that, The unmanned aerial vehicle and the sampling boat are connected by a traction rope, and the unmanned aerial vehicle is used to tow the sampling boat to sail along a set path on the water surface; the sampling boat comprises a bearing hull and a sampling mechanism, the bearing hull comprises a front warehouse section, a middle warehouse section and a tail warehouse section, the traction rope is connected to the front warehouse section, the sampling mechanism is installed on the tail warehouse section, and the middle warehouse section is provided with a water inlet; The sampling mechanism comprises a water storage chamber, a sealed chamber, a sampling pipe and a storage part, the water storage chamber is arranged at the bottom of the hull and is completely submerged in water, the sealed chamber is arranged above the water storage chamber, and the sealed chamber is in communication with the water storage chamber; the sampling pipe comprises a first water inlet pipe and a second water inlet pipe, the liquid inlet ends of the first water inlet pipe and the second water inlet pipe extend into water through the water inlet, and the liquid outlet ends of the first water inlet pipe and the second water inlet pipe are arranged in the sealed chamber; when the unmanned aerial vehicle tows the sampling boat to sail, the first water inlet pipe supplies water to the water storage chamber, and the second water inlet pipe supplies water to the storage part; The storage part comprises a floating base, a water storage pipe body and a limiting rod, the floating base floats on the water surface in the water storage chamber, the water storage pipe body is vertically connected to the floating base, the water storage pipe body is composed of a plurality of water storage units, the water storage units are equidistantly arranged along the height direction, the water storage units are internally provided with containing cavities, and the side surface of the water storage unit opposite to the second water inlet pipe is provided with a liquid inlet window for water sample inflow; the limiting rod is arranged at the top of the water storage pipe body, the top of the sealed chamber is provided with a limiting sleeve, the limiting sleeve is in communication with the external environment, the inner diameter of the limiting sleeve matches the outer diameter of the limiting rod, the limiting rod passes through the limiting sleeve, and when the water level in the water storage chamber is the lowest, the top end of the limiting rod is still in the limiting sleeve; The water storage unit comprises a liquid inlet cavity pipe section and a liquid storage cavity pipe section, the liquid inlet window is arranged on the liquid inlet cavity pipe section, the liquid storage cavity pipe section is arranged below the liquid inlet cavity pipe section, a sample retention pipe is arranged in the liquid storage cavity pipe section, and the sample retention pipe is used to retain water samples; the bottom of the liquid storage cavity pipe section is provided with a bearing part, and the sample retention pipe is connected to the bearing part; the bearing part has an unloaded state and a ballast state; when the water sample does not fill the sample retention pipe, the bearing part is in the unloaded state, and at this time, the top end of the sample retention pipe exceeds the top opening of the liquid storage cavity pipe section; when the water sample fills the sample retention pipe, the bearing part is in the ballast state, and at this time, the top end of the sample retention pipe falls below the opening of the liquid storage cavity pipe section. The bottom of the liquid inlet cavity pipe section is further provided with a first limiting device, the first limiting device comprises a first baffle and a spring pushing piece, the first baffle is horizontally arranged, and the spring pushing piece applies a horizontal force on the first baffle, so as to push the first baffle to slide away from the second water guide pipe; when the carrier is in an empty state, one end of the first baffle abuts against the sample pipe, and the other end exceeds the liquid outlet end of the second water guide pipe; when the carrier changes to a ballast state, the first baffle is released from the limitation of the sample pipe, the spring pushing piece pushes the first baffle to slide away from the second water guide pipe, and the opening of the sample pipe is closed, and at this time, a space is formed between the first baffle and the second water guide pipe.

2. The water sampling device integrated with a drone platform as claimed in claim 1, wherein, The water storage chamber is further provided with a positioning sleeve, the positioning sleeve separates the water storage chamber into an inner water storage area and an outer water storage area, the inner water storage area is an internal area of the positioning sleeve, the positioning sleeve is arranged in a spaced manner with the bottom of the water storage chamber, so that the inner water storage area and the outer water storage area are communicated, the cross-sectional shape of the positioning sleeve is rectangular, the shape of the floating water base is matched with the cross-sectional shape of the positioning sleeve, and the floating water base floats up and down in the positioning sleeve; a plurality of water permeable holes are further arranged on the floating water base.

3. The water sampling device integrated with a UAV platform of claim 2, wherein, The top opening elevation of the positioning sleeve is greater than the top opening elevation of the water storage chamber, the setting elevation of the liquid outlet end of the first water guide pipe corresponds to the opening surface elevation of the outer water storage area, and the setting elevation of the liquid outlet end of the second water guide pipe corresponds to the opening surface elevation of the inner water storage area.

4. The water sampling device integrated with a UAV platform of claim 3, wherein, The outer diameter of the liquid storage cavity pipe section is smaller than the outer diameter of the liquid inlet cavity pipe section, and the liquid storage cavity pipe section is arranged on the side away from the second water guide pipe.

5. The water sampling device integrated with a drone platform of claim 4, wherein, The first baffle is provided with a storage groove on the side corresponding to the sample pipe, a cover is arranged in the storage groove, and when the spring pushing piece pushes the first baffle to slide away from the second water guide pipe, the cover can be pushed by the first baffle to the opening of the liquid storage cavity pipe section, so that the opening of the sample pipe is closed.

6. The water sampling device integrated with a drone platform of claim 5, wherein, The liquid outlet end of the second water guide pipe is provided with an abutting plate, the abutting plate and the second water guide pipe are connected in a rotatable manner, and the end of the abutting plate exceeds the end of the second water guide pipe; the bottom of the liquid inlet cavity pipe section is further vertically provided with a clamping plate, the length of the clamping plate matches the length of the liquid storage cavity pipe section, the length of the abutting plate exceeding the liquid outlet end of the second water guide pipe is greater than the spacing width of the clamping plate and the second water guide pipe, and a plurality of clamping grooves are further arranged on the clamping plate, the clamping grooves are used to increase the roughness of the surface of the clamping plate; when the abutting plate enters the range of the clamping plate, the abutting plate is pushed by the clamping plate to rotate, and an acute angle is formed between the abutting plate and the central axis of the second water guide pipe.

7. The water sampling device integrated with a drone platform as claimed in claim 6, wherein, The cover is further provided with a liquid discharge pipe; the carrier comprises a second baffle, a plugging piston and a force transmission rod, the top of the liquid inlet cavity pipe section is provided with a first base, the second baffle is rotatably connected to the first base, and the rotation axis of the second baffle is perpendicular to the central axis of the second water guide pipe. The blocking piston is clamped at the bottom of the sample tube, a second base is arranged on the second baffle, a third base is arranged on the blocking piston, one end of the force transmission rod is rotatably connected to the third base, and the other end is rotatably connected to the second base, and the rotation axis of the force transmission rod is parallel to the rotation axis of the second baffle; The top of the liquid inlet cavity pipe section is also provided with a limit compression spring, and the end of the limit compression spring abuts against the second baffle in the ballast state of the carrier; at this time, the limit compression spring is compressed, the second baffle is upwardly tilted on the side corresponding to the second water guide pipe, and the end of the second baffle exceeds the liquid outlet end of the second water guide pipe; When the water storage pipe body continues to float upward until the second water guide pipe abuts against the second baffle, the second baffle is downwardly rotated due to the extrusion of the second water guide pipe, at this time, the second baffle is gradually tilted on the side corresponding to the sample tube, the second baffle is separated from the limit compression spring, and the force transmission rod pushes the blocking piston to move upward in the sample tube; when the second baffle is downwardly rotated to the maximum angle, the spacing distance between the second baffle and the second water guide pipe reaches the maximum value, at this time, the second baffle can pass through the second water guide pipe.

8. The water sampling device integrated with a drone platform of claim 7, wherein, The liquid inlet cavity pipe section and the liquid storage cavity pipe section are detachably connected; the second baffle and the first base are detachably connected.

9. A water quality monitoring method characterized by, The method comprises the following steps: Step one, preparation: planning a sampling path and sampling points according to the hydrological conditions of the river; Step two, water sample collection: using the water sample collection device according to any one of claims 1-8 to sail along the planned sampling path and collect water samples at the sampling points; Step three, water quality detection: sending the collected water samples to a laboratory and detecting various indicators in the water samples using water quality detection equipment to obtain water quality data; Step four, data analysis: collating and analyzing the detected water quality data, comparing with relevant water quality standards, evaluating whether the pollution discharge behavior meets the pollutant discharge standard, and whether the environmental impact on the receiving water body is controllable.

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