An intelligent sensing and locking type water pollution sampling device mounted on a remote control unmanned aerial vehicle

Abstract

The application relates to the technical field of water pollution sampling, in particular to an intelligent induction locking type water pollution sampling device carried on a remote control unmanned aerial vehicle, which comprises the unmanned aerial vehicle, the bottom of the unmanned aerial vehicle is provided with a mounting frame, two symmetrically-distributed L-shaped guide rails are installed on the mounting frame, a sliding frame is slidably arranged on the L-shaped guide rails, a sampling cup for water sampling is installed on the sliding frame, a supporting plate is installed on the L-shaped guide rails, and a sample storage box for storing the sampled water is detachably installed on the supporting plate; a driving mechanism is arranged on the L-shaped guide rails, the sliding frame is driven to slide on the L-shaped guide rails through the driving mechanism, so that the sampled water in the sampling cup can be poured into the sample storage box; in addition, an intelligent induction locking mechanism is further arranged on the L-shaped guide rails; the intelligent induction locking mechanism is used for monitoring the sampling weight in real time and automatically braking and locking when the preset threshold is reached, so that the sampling overweight is effectively prevented, and the flight safety of the unmanned aerial vehicle is ensured.

Description

Technical Field

[0001] This invention relates to the field of water pollution sampling technology, specifically an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone. Background Technology

[0002] Water pollution monitoring is a crucial component of ecological environmental protection and emergency response to sudden pollution incidents. Traditional surface water sampling mainly relies on manual sampling by boat or wading operations, which are high-risk, have limited coverage, and are not timely. In recent years, with the rapid development of drone technology, remote water pollution sampling devices mounted on remotely controlled drones have gradually become an alternative. By having the drone carry the sampling device to the target water area and complete the water sampling operation remotely, the risk of personnel directly contacting polluted water bodies can be effectively avoided, and the speed of emergency response and sampling flexibility can be significantly improved.

[0003] However, existing drone sampling devices still have significant shortcomings in practical applications. Due to the complex composition and unknown properties of sewage in remote sampling environments, and the significant differences in water density and solid content in different water bodies, the actual specific gravity of some industrial wastewater or high-concentration suspensions is far greater than that of ordinary freshwater. If the sampling device still samples according to the conventional volume or fixed time, the actual sampling weight may far exceed the rated load of the drone for the same sampling volume, which may lead to flight instability or even crash. Although some existing technologies have added a weighing sensor to the bottom of the sampling container, they generally only have simple weight display or alarm functions and lack active braking and locking mechanisms. They cannot interrupt the sampling action in time when the sampling weight exceeds the limit, resulting in insufficient safety assurance.

[0004] To address these issues, we provide an intelligent sensing and locking water pollution sampling device mounted on a remotely controlled drone. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone. By installing a weight sensor under the sampling container, the device monitors changes in the sampling weight in real time. When the sampling weight is about to reach a preset load threshold, the intelligent sensing and locking mechanism automatically brakes and locks the sampling action of the sampling container. On the one hand, it can brake in time during the tilting process to prevent the sampling amount from exceeding the limit. On the other hand, the locked sampling action cannot be moved under any external force, effectively eliminating the risk of secondary overload caused by accidental operation, thereby fundamentally ensuring the flight safety of the drone and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A smart sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a drone, a mounting frame installed on the bottom of the drone, two symmetrically distributed L-shaped guide rails mounted on the mounting frame, a sliding frame slidably mounted on the L-shaped guide rails, a sampling cup for water sampling mounted on the sliding frame, a tray mounted on the L-shaped guide rails, and a sample storage box for storing the sampled water detachably mounted on the tray. The L-shaped guide rail is equipped with a driving mechanism. The sliding frame is driven by the driving mechanism to slide on the L-shaped guide rail, so that the sampled water in the sampling cup can be poured into the sample storage box. In addition, the L-shaped guide rail is also equipped with an intelligent sensing locking mechanism. When the weight of the sampled water in the sample storage box reaches the preset weight, the intelligent sensing locking mechanism can automatically lock the sliding motion of the sliding frame to prevent the sampling amount from exceeding the limit.

[0007] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a plurality of reinforcing beams connected between two L-shaped guide rails, with the plurality of reinforcing beams spaced apart on the L-shaped guide rails.

[0008] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a rotating shaft rotatably mounted on the sliding frame, with rollers mounted at both ends of the shaft, and the rollers slidingly engaging with an L-shaped guide rail.

[0009] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a drive mechanism comprising swing arms respectively hinged to two L-shaped guide rails. An electro-hydraulic push rod is provided between the L-shaped guide rails and the swing arms. The two ends of the electro-hydraulic push rod are respectively hinged to the L-shaped guide rails and the swing arms. A connecting rod is provided between the sliding frame and the swing arms. One end of the connecting rod is hinged to the swing arms, and the other end is hinged to the side wall of the sliding frame.

[0010] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a plurality of synchronizing rods connected between the two swing arms, with the plurality of synchronizing rods spaced apart on the swing arms.

[0011] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a linkage rod connecting the two connecting rods.

[0012] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a weighing sensor mounted on the upper surface of a tray for detecting the weight of a sample storage box, and two guide sleeves mounted on a sliding frame. A push rod is slidably disposed inside the guide sleeve, and a brake block is mounted on the push rod. The brake block slides in cooperation with an L-shaped guide rail. A controller is mounted on the drone, and a drive device is disposed on the sliding frame. When the weighing sensor detects that the weight of the sample storage box has reached a preset weight, the controller can control the drive device to drive the two push rods to move synchronously in opposite directions, causing the brake block to press against the inner wall of the L-shaped guide rail to brake the sliding frame.

[0013] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a drive shaft rotatably mounted on a sliding frame. An eccentric wheel is mounted on the drive shaft, and an eccentric connecting rod is provided between the eccentric wheel and the push rod. The two ends of the eccentric connecting rod are respectively hinged to the eccentric wheel and the push rod. A servo motor is mounted on the sliding frame, and the output end of the servo motor is connected to the drive shaft through a coupling to drive the drive shaft to rotate.

[0014] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone: the weighing sensor and the servo motor are electrically connected to the controller via wires.

[0015] As described above, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone has an elastic float valve installed at the bottom of the sampling cup. When water enters the cup, the water pressure pushes open the float valve, allowing water to enter the sampling cup and complete the sampling. After sampling, the sampling cup is removed from the water surface, and the elastic float valve resets and seals under the action of spring force and its own gravity, preventing water sample leakage from the sampling cup.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets up an intelligent sensing locking mechanism and installs a weighing sensor under the sample storage box. The weighing sensor monitors the weight change of the sampled water in the sample storage box in real time. When the sample weight is about to reach the preset load threshold, the controller automatically triggers the drive device to make the brake block press against the inner wall of the L-shaped guide rail and implement immediate braking and locking of the sliding frame. This not only interrupts the sampling action in time during the tilting of the sampling cup, effectively preventing the actual sampling amount from exceeding the standard due to the inertia of the sliding frame, but also ensures that the sliding frame cannot move under any external force after locking, effectively eliminating the risk of secondary overload caused by accidental operation and fundamentally ensuring the flight safety of the drone. In addition, the invention has a compact overall structure and a reasonable layout of all components, all of which are integrated and installed on the bottom of the drone without occupying additional mounting space. The sample storage box is detachable, which facilitates quick on-site replacement and sample transportation. The entire device can be remotely powered and controlled by the drone to achieve fully automated remote water pollution sampling operations, effectively reducing the degree of human intervention. It is suitable for efficient, safe and accurate sampling in various complex water environments. Attached Figure Description

[0017] Figure 1 This is a first-person view of the overall structure of an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone.

[0018] Figure 2 This is a second-view overall structural diagram of an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone.

[0019] Figure 3 for Figure 1 A schematic diagram of the decomposed part of the structure.

[0020] Figure 4 for Figure 3 A schematic diagram of the decomposed part of the structure.

[0021] Figure 5 for Figure 4 A schematic diagram of the decomposed part of the structure.

[0022] Figure 6 for Figure 5 A structural diagram from another perspective.

[0023] Figure 7 for Figure 6 A schematic diagram of the decomposed part of the structure.

[0024] Figure 8 for Figure 7 A schematic diagram of the decomposed part of the structure.

[0025] Figure 9 for Figure 8 A structural diagram from another perspective.

[0026] Figure 10 for Figure 8 A schematic diagram of the decomposed part of the structure.

[0027] In the diagram: 1. UAV; 2. Mounting frame; 3. L-shaped guide rail; 5. Swing arm; 6. Electro-hydraulic push rod; 7. Sliding frame; 8. Sampling cup; 9. Connecting rod; 10. Rotating shaft; 11. Roller; 12. Pallet; 13. Sample storage box; 14. Weighing sensor; 15. Drive shaft; 16. Servo motor; 17. Eccentric wheel; 18. Guide sleeve; 19. Push rod; 20. Brake block; 21. Eccentric connecting rod; 22. Controller; 23. Reinforcing beam; 24. Synchronizing rod; 25. Linkage rod. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figures 1-10 As an embodiment of the present invention, an intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone includes a drone 1. A mounting frame 2 is installed on the bottom of the drone 1. Two symmetrically distributed L-shaped guide rails 3 are installed on the mounting frame 2. A sliding frame 7 is slidably arranged on the L-shaped guide rails 3. A sampling cup 8 for water sampling is installed on the sliding frame 7. A tray 12 is installed on the L-shaped guide rails 3. A sample storage box 13 for storing sampled water is detachably installed on the tray 12. The L-shaped guide rail 3 is equipped with a driving mechanism. The sliding frame 7 is driven by the driving mechanism to slide on the L-shaped guide rail 3, so that the sampled water in the sampling cup 8 can be poured into the sample storage box 13. In addition, the L-shaped guide rail 3 is also equipped with an intelligent sensing locking mechanism. When the weight of the sampled water in the sample storage box 13 reaches the preset weight, the intelligent sensing locking mechanism can automatically lock the sliding action of the sliding frame 7 to prevent the sampling amount from exceeding the limit.

[0030] In this embodiment, during use, the drone 1 takes off and flies to the target polluted water area, then descends, immersing the sampling cup 8 mounted on the sliding frame 7 in the water to collect samples from the polluted water area. After sampling, the drone lifts up, causing the sampling cup 8 to detach from the water surface. The drive mechanism is activated via the remote control system, causing the sliding frame 7 to slide smoothly along the L-shaped guide rail 3. At this time, the water sample to be collected has been pre-collected in the sampling cup 8. As the sliding frame 7 slides, the sampling cup 8 moves to a position directly above the sample storage box 13. Subsequently, the drive mechanism continues to operate, causing the sampling cup 8 to tilt and flip, pouring the sampled water inside into the sample storage box 13 for storage. The drone 1 can then repeat the above actions, repeatedly sampling through the sampling cup 8 and repeatedly pouring the water into the sample storage box 13. During the pouring process, the intelligent... The intelligent sensing and locking mechanism is always in working condition, monitoring the weight change of the sampled water in the sample storage box 13 in real time. When the weight of the sampled water collected in the sample storage box 13 gradually increases and reaches the preset safety threshold, the intelligent sensing and locking mechanism is immediately triggered automatically to brake and lock the sliding action of the sliding frame 7. At this time, the sliding frame 7 is firmly locked in the current position and cannot continue to slide along the L-shaped guide rail 3, thereby completely interrupting the continued pouring action of the sampled water and effectively preventing the sampled water volume from exceeding the rated load of the drone. Even if the drive mechanism is still trying to drive the sliding frame 7 to move, the sliding frame 7 cannot produce any displacement due to the locking effect of the intelligent sensing and locking mechanism, ensuring the accurate control of the sampled weight and avoiding the risk of drone flight instability or crash due to overweight. The entire sampling process does not require manual intervention and is completely completed by the device autonomously in sensing, judging and locking actions. In addition, it should be noted that the preset weight safety threshold of this device is not based solely on the capacity of the sample storage box 13, but is determined by a combination of the maximum safe load of the drone 1, the device's own weight, and the full weight of water in the sampling cup 8, so that when the water weight in the sample storage box 13 reaches this threshold, the total load of the drone 1 does not exceed the rated value.

[0031] As a further embodiment of the present invention, a plurality of reinforcing beams 23 are connected between the two L-shaped guide rails 3, and the plurality of reinforcing beams 23 are distributed at intervals on the L-shaped guide rails 3.

[0032] In this embodiment, the two ends of the reinforcing beam 23 are respectively fixedly connected to the opposite inner sidewalls of the two L-shaped guide rails 3. Multiple beams are evenly spaced along the length of the L-shaped guide rails 3. By setting the reinforcing beam 23, the two symmetrically distributed L-shaped guide rails 3 can be firmly connected into one body to form a stable frame structure. This effectively prevents the L-shaped guide rails 3 from shifting or twisting during use, ensuring that the trajectory of the sliding frame 7 on the L-shaped guide rails 3 remains parallel and stable, thereby improving the stability and reliability of the sampling and tilting action.

[0033] As a further embodiment of the present invention, a rotating shaft 10 is rotatably mounted on the sliding frame 7, and rollers 11 are respectively mounted on both ends of the rotating shaft 10. The rollers 11 are slidably engaged with the L-shaped guide rail 3.

[0034] In this embodiment, the two ends of the rotating shaft 10 pass through the mounting holes on both sides of the sliding frame 7 and extend out. A roller 11 is fixedly installed at each of the extended ends. The roller 11 is embedded in the groove of the L-shaped guide rail 3 and can roll freely along the groove. Through the cooperation of the rotating shaft 10 and the roller 11, the sliding frame 7 can achieve low-friction linear sliding on the L-shaped guide rail 3. At the same time, the rotational freedom of the rotating shaft 10 allows the sliding frame 7 to deflect at a certain angle when necessary, providing a motion basis for the subsequent tilting and flipping action of the sampling cup 8. In addition, the corner of the L-shaped guide rail 3 is rounded with a rounded arc transition. The rounded transition treatment can effectively eliminate stress concentration at the sharp corner, improve the structural strength and fatigue resistance of the component, and extend the service life of the device. On the other hand, the smooth arc surface makes the roller 11 slide smoothly from the vertical section to the horizontal section of the L-shaped guide rail 3.

[0035] As a further embodiment of the present invention, the driving mechanism includes a swing arm 5 that is hinged to two L-shaped guide rails 3 respectively. An electric hydraulic push rod 6 is provided between the L-shaped guide rails 3 and the swing arm 5. The two ends of the electric hydraulic push rod 6 are respectively hinged to the L-shaped guide rails 3 and the swing arm 5. A connecting rod 9 is provided between the sliding frame 7 and the swing arm 5. One end of the connecting rod 9 is hinged to the swing arm 5, and the other end is hinged to the side wall of the sliding frame 7.

[0036] In this embodiment, the swing arm 5 is mounted at the end of the L-shaped guide rail 3 via a hinge seat and can swing around the hinge point. The cylinder end of the electro-hydraulic push rod 6 is hinged to the L-shaped guide rail 3, and the piston rod end is hinged to the swing arm 5. One end of the connecting rod 9 is hinged to one end of the swing arm 5, and the other end is hinged to the side wall of the sliding frame 7. During operation, the electro-hydraulic push rod 6 extends and retracts to drive the swing arm 5 to swing around its other end hinge point, and then the swing motion is converted into linear sliding of the sliding frame 7 along the L-shaped guide rail 3 through the connecting rod 9. When the sliding frame 7 slides in the vertical section of the L-shaped guide rail 3, it can drive the sampling cup 8 to be lifted vertically. When the sliding frame 7 slides in the horizontal section of the L-shaped guide rail 3, it can drive the sampling cup 8 to tilt and flip. This drive mechanism has a simple structure and smooth transmission. After the electro-hydraulic push rod 6 is de-energized, the output piston rod position is maintained, which can keep the sliding frame 7 in the current sliding position and avoid the sampling cup 8 from accidentally flipping and causing water sample to spill or the device to be unbalanced.

[0037] As a further embodiment of the present invention, a plurality of synchronizing rods 24 are connected between the two swing arms 5, and the plurality of synchronizing rods 24 are distributed at intervals on the swing arms 5.

[0038] In this embodiment, the two ends of the synchronizing rod 24 are respectively fixedly connected to the opposite inner sidewalls of the two swing arms 5, and multiple rods are evenly spaced along the length of the swing arms 5. By setting the synchronizing rod 24, the two symmetrically distributed swing arms 5 can be synchronously connected into a whole, ensuring that the swing arms 5 on both sides always maintain synchronous movement during the swing process, avoiding jamming or deflection of the sliding frame 7 due to left and right asynchrony, and further improving the motion consistency of the drive mechanism.

[0039] As a further embodiment of the present invention, a linkage rod 25 is connected between the two connecting rods 9.

[0040] In this embodiment, the two ends of the linkage rod 25 are respectively fixedly connected to the inner sidewalls of the two connecting rods 9. By setting the linkage rod 25, the two symmetrically distributed connecting rods 9 can be connected into a whole, so that the connecting rods 9 on both sides can maintain synchronous movement when transmitting driving force, prevent the sliding frame 7 from twisting due to uneven force on one side, and ensure that the sliding frame 7 is balanced in force and stable in posture during the sliding process.

[0041] As a further embodiment of the present invention, the intelligent sensing locking mechanism includes a weighing sensor 14 installed on the upper surface of the tray 12 for detecting the weight of the sample storage box 13, and two guide sleeves 18 installed on the sliding frame 7. A push rod 19 is slidably arranged inside the guide sleeve 18, and a brake block 20 is installed on the push rod 19. The brake block 20 is slidably engaged with the L-shaped guide rail 3. A controller 22 is installed on the drone 1, and a drive device is provided on the sliding frame 7. When the weighing sensor 14 detects that the weight of the sample storage box 13 reaches the preset weight, the controller 22 can control the drive device to drive the two push rods 19 to move synchronously in opposite directions, thereby causing the brake block 20 to press against the inner wall of the L-shaped guide rail 3 to brake the sliding frame 7.

[0042] In this embodiment, the weighing sensor 14 is installed at the center of the upper surface of the tray 12, and the sample storage box 13 is placed on the weighing sensor 14, so that the entire weight of the sample storage box 13 and the sampled water inside is borne by the weighing sensor 14 and converted into an electrical signal output in real time. Two guide sleeves 18 are symmetrically arranged on both sides of the sliding frame 7. They are hollow inside and their axis is perpendicular to the sliding direction of the L-shaped guide rail 3. The push rod 19 slides through the guide sleeve 18 and can slide freely along the axial direction inside the guide sleeve 18. The brake block 20 is fixedly installed on the push rod 19. One end of the L-shaped guide rail 3 has a friction material layer on its outer surface, which can contact and cooperate with the inner wall surface of the L-shaped guide rail 3. The controller 22 is installed on the drone 1 and is electrically connected to the weighing sensor 14 and the drive device. When the weighing sensor 14 detects that the weight of the sample storage box 13 reaches the preset threshold, it sends a signal to the controller 22. The controller 22 then controls the drive device to move, driving the two push rods 19 to move outward synchronously in opposite directions, causing the brake block 20 to press tightly against the inner wall surface of the L-shaped guide rail 3, and achieving instant braking and locking of the sliding frame 7 through friction.

[0043] As a further embodiment of the present invention, the driving device includes a drive shaft 15 rotatably mounted on a sliding frame 7, an eccentric wheel 17 mounted on the drive shaft 15, an eccentric connecting rod 21 provided between the eccentric wheel 17 and the push rod 19, the two ends of the eccentric connecting rod 21 being hinged to the eccentric wheel 17 and the push rod 19 respectively, and a servo motor 16 mounted on the sliding frame 7, the output end of the servo motor 16 being connected to the drive shaft 15 through a coupling to drive the drive shaft 15 to rotate.

[0044] In this embodiment, the drive shaft 15 is rotatably mounted on the sliding frame 7 via a bearing seat, and its axis is perpendicular to the sliding direction of the push rod 19. The eccentric wheel 17 is mounted on the drive shaft 15 and can rotate synchronously with the rotation of the drive shaft 15. One end of the eccentric connecting rod 21 is hinged to the eccentric wheel 17, and the other end is hinged to the end of the push rod 19 on the corresponding side. The servo motor 16 is fixedly mounted on the sliding frame 7, and its output shaft is coaxially connected to one end of the drive shaft 15 via a coupling. When the servo motor 16 receives the command from the controller 22, it rotates forward, driving the drive shaft 15 to rotate, causing the eccentric wheel 17 to rotate synchronously. Then, through the eccentric connecting rod 21, it pushes the two push rods 19 to extend outward synchronously in opposite directions, causing the brake block 20 to press against the L-shaped guide rail 3 to achieve the braking action. When it is necessary to release the brake, the servo motor 16 reverses, causing the push rod 19 to retract inward, releasing the pressing state between the brake block 20 and the L-shaped guide rail 3.

[0045] As a further embodiment of the present invention, the weighing sensor 14 and the servo motor 16 are electrically connected to the controller 22 via wires.

[0046] In this embodiment, the signal output terminal of the weighing sensor 14 is connected to the signal input terminal of the controller 22 via a wire, transmitting the detected real-time weight data of the sample storage box 13 to the controller 22 for processing and judgment. The control input terminal of the servo motor 16 is connected to the control signal output terminal of the controller 22 via a wire, receiving start / stop and forward / reverse commands from the controller 22. Through the above electrical connections, a complete intelligent closed-loop control system is formed, realizing real-time monitoring of the sample weight and automatic locking function when the sample weight exceeds the limit.

[0047] As a further embodiment of the present invention, an elastic float valve is installed at the bottom of the sampling cup 8. When water enters the cup, the water pressure pushes open the float valve, and the water enters the sampling cup 8 to complete the sampling. After the sampling is completed, the sampling cup 8 is removed from the water surface, and the elastic float valve is reset and sealed under the action of spring force and its own weight to prevent water sample leakage from the sampling cup 8.

[0048] In this embodiment, after the UAV 1 takes off and flies to the target polluted water area, it slowly descends, immersing the sampling cup 8 installed on the sliding frame 7 in the water. When entering the water, the water pressure pushes open the elastic float valve, and the water enters the pipe to complete the sampling. After the sampling is completed, the UAV 1 is raised upward, so that the sampling cup 8 is removed from the water surface. At this time, the elastic float valve resets and seals under the action of spring force and its own gravity to prevent the water sample in the sampling cup 8 from leaking.

[0049] The working principle of this invention is as follows: When sampling water pollution, the drone 1 takes off and flies to the target polluted water area, then slowly descends, immersing the sampling cup 8 mounted on the sliding frame 7 in the water. After sampling, the drone 1 rises, causing the sampling cup 8 to detach from the water surface. At this time, the elastic float valve resets and seals under the action of spring force and its own gravity, preventing water sample leakage from the sampling cup 8. Subsequently, the drive mechanism is activated through the remote control system. The piston rod of the electro-hydraulic push rod 6 in the drive mechanism extends, driving the swing arm 5 to swing around its hinge point. The swing of arm 5 is transmitted to sliding frame 7 through connecting rod 9, which drives sliding frame 7 to slide along the track of L-shaped guide rail 3. At this time, water sample has been collected in sampling cup 8. As sliding frame 7 slides, sampling cup 8 first rises to a certain height along the vertical section of L-shaped guide rail 3, and then moves to the position directly above sample storage box 13 along the horizontal section. At the same time, when sliding frame 7 slides in the horizontal section of L-shaped guide rail 3, the rotation of rotating shaft 10 and roller 11 causes sampling cup 8 to tilt and flip, pouring the sampled water inside into sample storage box 13 for storage. The sample storage box 13 is detachably mounted on the tray 12. A weighing sensor 14 is installed on the tray 12 at its bottom to monitor the weight change of the sampled water in the sample storage box 13 in real time. During the pouring process, the intelligent sensing and locking mechanism is always in working state. The weighing sensor 14 transmits the real-time weight data to the controller 22 for processing and judgment. When the weight of the sampled water collected in the sample storage box 13 gradually increases and reaches the preset safety threshold, the controller 22 immediately issues a command to control the servo motor 16 in the drive device to rotate forward, driving the drive shaft 15 to rotate. The eccentric wheel 17 on the drive shaft 15 rotates synchronously. Through the eccentric connecting rod 21, it pushes the two push rods 19 to extend outward synchronously in opposite directions in the guide sleeve 18, driving the brake block 20 to press tightly against the inner wall of the L-shaped guide rail 3. The friction force is used to implement instant braking and locking of the sliding frame 7. At this time, the sliding frame 7 is firmly locked in the current position and cannot continue to slide along the L-shaped guide rail 3, thus completely interrupting the continued pouring of the sampled water. It should be noted that the preset weight safety threshold of this device is not based solely on the capacity of the sample storage box 13, but is determined by a combination of the maximum safe load of the UAV 1, the self-weight of the device, and the full weight of water in the sampling cup 8. When the water weight in the sample storage box 13 reaches this threshold, even if there is still water in the sampling cup 8, the total load of the UAV will not exceed the rated value, thereby ensuring flight safety. After locking, even if the drive mechanism is still trying to drive the sliding frame 7 to move, the sliding frame 7 cannot produce any displacement due to the locking effect of the intelligent sensing locking mechanism, ensuring the accurate control of the sampling weight and avoiding the risk of the UAV 1 becoming unstable or crashing due to overweight. When it is necessary to release the brake, the controller 22 controls the servo motor 16 to reverse, causing the push rod 19 to retract inward, releasing the clamping state between the brake block 20 and the L-shaped guide rail 3, and the sliding frame 7 regains its free sliding ability. The drone 1 can repeat the above actions, taking multiple samples through the sampling cup 8 and repeatedly pouring the water into the sample storage box 13 until the water weight in the sample storage box 13 reaches the preset threshold and then automatically locks, completing a safe quantitative sampling task. The entire sampling process does not require manual intervention and is completely autonomously completed by the device in sensing, judgment and locking actions.

[0050] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A smart sensing and locking water pollution sampling device mounted on a remote-controlled drone, comprising a drone (1), characterized in that, The drone (1) is equipped with a mounting frame (2) at its bottom. Two symmetrically distributed L-shaped guide rails (3) are mounted on the mounting frame (2). A sliding frame (7) is slidably mounted on the L-shaped guide rails (3). A sampling cup (8) for water sampling is mounted on the sliding frame (7). A tray (12) is mounted on the L-shaped guide rails (3). A sample storage box (13) for storing sampled water is detachably mounted on the tray (12). The L-shaped guide rail (3) is equipped with a driving mechanism. The sliding frame (7) is driven by the driving mechanism to slide on the L-shaped guide rail (3), so that the sampled water in the sampling cup (8) can be poured into the sample storage box (13). In addition, the L-shaped guide rail (3) is also equipped with an intelligent sensing locking mechanism. When the weight of the sampled water in the sample storage box (13) reaches the preset weight, the intelligent sensing locking mechanism can automatically lock the sliding action of the sliding frame (7).

2. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 1, characterized in that, Multiple reinforcing beams (23) are connected between the two L-shaped guide rails (3), and the multiple reinforcing beams (23) are distributed at intervals on the L-shaped guide rails (3).

3. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 1, characterized in that, A rotating shaft (10) is rotatably mounted on the sliding frame (7). Rollers (11) are respectively mounted on both ends of the rotating shaft (10). The rollers (11) slide in cooperation with the L-shaped guide rail (3).

4. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 1, characterized in that, The drive mechanism includes a swing arm (5) that is hinged to two L-shaped guide rails (3) respectively. An electric hydraulic push rod (6) is provided between the L-shaped guide rails (3) and the swing arm (5). The two ends of the electric hydraulic push rod (6) are respectively hinged to the L-shaped guide rails (3) and the swing arm (5). A connecting rod (9) is provided between the sliding frame (7) and the swing arm (5). One end of the connecting rod (9) is hinged to the swing arm (5), and the other end is hinged to the side wall of the sliding frame (7).

5. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 4, characterized in that, Multiple synchronizing rods (24) are connected between the two swing arms (5), and the multiple synchronizing rods (24) are distributed at intervals on the swing arms (5).

6. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 4, characterized in that, A linkage rod (25) connects the two links (9).

7. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 1, characterized in that, The intelligent sensing and locking mechanism includes a weighing sensor (14) installed on the upper surface of the tray (12) for detecting the weight of the sample storage box (13) and two guide sleeves (18) installed on the sliding frame (7). A push rod (19) is slidably arranged inside the guide sleeve (18). A brake block (20) is installed on the push rod (19). The brake block (20) is slidably engaged with the L-shaped guide rail (3). A controller (22) is installed on the drone (1). A drive device is provided on the sliding frame (7). When the weighing sensor (14) detects that the weight of the sample storage box (13) reaches the preset weight, the controller (22) can control the drive device to drive the two push rods (19) to move synchronously in opposite directions, causing the brake block (20) to press against the inner wall of the L-shaped guide rail (3) to brake the sliding frame (7).

8. The intelligent sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 7, characterized in that, The driving device includes a drive shaft (15) rotatably mounted on a sliding frame (7), an eccentric wheel (17) mounted on the drive shaft (15), an eccentric connecting rod (21) between the eccentric wheel (17) and the push rod (19), the two ends of the eccentric connecting rod (21) being hinged to the eccentric wheel (17) and the push rod (19) respectively, a servo motor (16) mounted on the sliding frame (7), the output end of the servo motor (16) being connected to the drive shaft (15) through a coupling to drive the drive shaft (15) to rotate.

9. A smart sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 8, characterized in that, The weighing sensor (14) and the servo motor (16) are electrically connected to the controller (22) via wires.

10. A smart sensing and locking water pollution sampling device mounted on a remote-controlled drone according to claim 1, characterized in that, The bottom of the sampling cup (8) is equipped with an elastic float valve. When water enters, the water pressure pushes open the float valve, and the water enters the sampling cup (8) to complete the sampling. After the sampling is completed, the sampling cup (8) is removed from the water surface, and the elastic float valve resets and seals under the action of spring force and its own weight to prevent water sample leakage from the sampling cup (8).

Images