Drones for water quality sampling

Abstract

The present application discloses a drone for sampling water quality of a water body, comprising a drone body and a sampling assembly, wherein the sampling assembly is arranged on the drone body, and the sampling assembly comprises a mounting frame, a reeling mechanism, a sampling box, a mounting plate, a water body pumping mechanism, a linear reciprocating drive mechanism, a plurality of sample collecting mechanisms and a plurality of water storage mechanisms, wherein the mounting frame is arranged on the drone body, and the reeling mechanism is arranged on the mounting frame, the sampling box is connected to the reeling mechanism, and the mounting plate is detachably arranged on the bottom of the sampling box, the water body pumping mechanism and the linear reciprocating drive mechanism are respectively arranged on the mounting plate, the linear reciprocating drive mechanism is connected to the water body pumping mechanism, a plurality of sample collecting mechanisms and a plurality of water storage mechanisms are respectively arranged on the mounting plate, and the plurality of sample collecting mechanisms and a plurality of water storage mechanisms are respectively connected to the water body pumping mechanism. Thus, it is possible to effectively reduce the unnecessary load of the drone and improve the flight stability and control performance of the drone.

Description

Technical Field

[0001] The present application relates to the technical field of water quality sampling, and in particular to a drone for water quality sampling. Background Art

[0002] Water is an extremely important natural resource on the earth, and its water quality is directly related to ecological balance, human health and numerous economic activities. Therefore, accurate and comprehensive sampling and analysis of water quality is a key task in environmental monitoring, water resources management and scientific research.

[0003] With the continuous development of science and technology, drone technology has been widely used in various fields. In terms of water quality sampling, the use of drones has unique advantages. It can overcome the difficulties faced by traditional sampling methods in complex terrain, large areas of water and dangerous areas, and can reach the target sampling points quickly and flexibly, greatly improving sampling efficiency and coverage capabilities, and reducing manpower input and operational risks.

[0004] In the related art, when using drones to sample water quality, the following method is usually adopted: the drone carries a sampling device and flies above the target water area, and then lowers the sampling device to a predetermined depth in the water body for sampling through a lifting device. After the sampling is completed, the sampling device is lifted back to the drone and brought back. However, during the lowering of the sampling device, due to the light weight of the sampling device itself, especially when it is necessary to collect water samples from deep underwater, it is difficult to overcome the buoyancy of the water body and make it sink smoothly to the specified depth. To solve this problem, it is often necessary to add additional counterweights to the sampling device, but this will significantly increase the load weight of the drone. The increase in the drone load will not only reduce its endurance and limit the scope and duration of the sampling operation, but will also have an adverse effect on the flight stability and control performance of the drone. Summary of the invention

[0005] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0006] To this end, one purpose of the present application is to provide a drone for sampling water quality in water bodies, which can use the weight of the water body to counterweight the sampling component so that it can overcome the buoyancy of the water body to complete sampling in deep water bodies, and can discharge excess water after sampling is completed, so as to effectively reduce unnecessary load on the drone and improve the flight stability and control performance of the drone.

[0007] To achieve the above-mentioned purpose, the first aspect of the present application proposes an unmanned aerial vehicle for water quality sampling, comprising an unmanned aerial vehicle body and a sampling component, wherein the sampling component is arranged on the unmanned aerial vehicle body, and the sampling component comprises a mounting frame, a winding and unwinding mechanism, a sampling box, a mounting plate, a water body pumping mechanism, a linear reciprocating drive mechanism, a plurality of sample collecting mechanisms and a plurality of water storage mechanisms, wherein the mounting frame is arranged on the unmanned aerial vehicle body, and the winding and unwinding mechanism is arranged on the mounting frame; the sampling box is connected to the winding and unwinding mechanism, and the mounting plate is detachably arranged on the bottom of the sampling box; the water body pumping mechanism and the linear reciprocating drive mechanism are respectively arranged on the mounting plate, and the linear reciprocating drive mechanism is connected to the water body pumping mechanism; a plurality of the sample collecting mechanisms and a plurality of the water storage mechanisms are respectively arranged on the mounting plate, and a plurality of the sample collecting mechanisms and a plurality of the water storage mechanisms are respectively connected to the water body pumping mechanism.

[0008] The drone used for water quality sampling in the embodiment of the present application can use the weight of the water body to counterweight the sampling component, so that it can overcome the buoyancy of the water body to complete sampling in the deep water body, and can discharge excess water after the sampling is completed, so as to effectively reduce unnecessary load on the drone and improve the flight stability and control performance of the drone.

[0009] In addition, the drone for water quality sampling proposed in the present application may also have the following additional technical features:

[0010] In one embodiment of the present application, the winding mechanism includes a motor, a rotating rod and a traction rope, wherein the rotating rod is rotatably arranged in the mounting frame; the traction rope is wound around the rotating rod, and the two ends of the traction rope are respectively fixedly connected to the rotating rod and the sampling box; the motor is arranged on the mounting frame, and the output shaft of the motor is coaxially connected to one end of the rotating rod through a coupling.

[0011] In one embodiment of the present application, the water pumping mechanism includes a fixed cylinder, a piston, a movable rod and a first solenoid valve, wherein the fixed cylinder is fixedly arranged on the mounting plate, and the bottom end of the fixed cylinder is located below the mounting plate; the piston is adapted to the inner wall of the fixed cylinder, and the piston is slidably arranged up and down in the fixed cylinder; one end of the movable rod is fixedly connected to the piston, and the other end of the movable rod passes through the bottom of the fixed cylinder and extends to the outside of the fixed cylinder; the first solenoid valve is arranged at the bottom of the fixed cylinder, and the first solenoid valve is communicated with the interior of the fixed cylinder.

[0012] In one embodiment of the present application, the linear reciprocating drive mechanism includes a connecting plate and a plurality of electric push rods, wherein the connecting plate is fixedly arranged on an end of the movable rod away from the piston; the plurality of electric push rods are respectively arranged in the sampling box, and the movable ends of the plurality of electric push rods respectively penetrate the bottom of the sampling box and are fixedly connected to the connecting plate.

[0013] In one embodiment of the present application, the sample collecting mechanism includes a sample collecting cylinder, a sealing cover, a second solenoid valve and a first connecting tube, wherein the sample collecting cylinder is fixedly arranged on the mounting plate, and the two ends of the first connecting tube are respectively connected to the sample collecting cylinder and the fixed cylinder; the top of the sample collecting cylinder is arranged to be an opening, and the sealing cover is detachably connected to the top of the sample collecting cylinder; the second solenoid valve is arranged on the first connecting tube.

[0014] In one embodiment of the present application, the water storage mechanism includes a water storage cylinder, a second connecting pipe and a third solenoid valve, wherein the water storage cylinder is fixedly arranged on the mounting plate, and the two ends of the second connecting pipe are fixedly connected to the water storage cylinder and the fixed cylinder respectively; the third solenoid valve is arranged on the second connecting pipe.

[0015] In one embodiment of the present application, the sampling box is in the shape of a truncated cone that is wide at the top and narrow at the bottom; limiting plates are respectively provided on both sides of the inner wall of the mounting frame, and the limiting plates are located between the rotating rod and the sampling box.

[0016] In one embodiment of the present application, a plurality of water through holes are provided on the connecting plate.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] 1. The sampling component can be weighted by using the weight of the water body, so that it can overcome the buoyancy of the water body to complete deep water sampling, and can discharge excess water after sampling is completed, so as to effectively reduce unnecessary load on the UAV and improve the flight stability and control performance of the UAV.

[0019] 2. It can sample and save water bodies in different areas and depths separately, so as to effectively reduce the number of return trips of the drone, thereby effectively increasing the flight time of the drone.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a drone for water quality sampling according to one embodiment of the present application;

[0023] Figure 2 It is a structural schematic diagram of a sampling component of a drone for sampling water quality according to one embodiment of the present application;

[0024] Figure 3 It is a structural schematic diagram of a sampling component of a drone for sampling water quality of a water body according to another embodiment of the present application;

[0025] Figure 4 It is a schematic structural diagram of a sampling component of a drone for sampling water quality according to another embodiment of the present application.

[0026] As shown in the figure: 1. UAV body; 2. Sampling component; 21. Mounting frame; 22. Reeling mechanism; 221. Motor; 222. Rotating rod; 223. Towing rope; 23. Sampling box; 24. Mounting plate; 25. Water pumping mechanism; 251. Fixed cylinder; 252. Piston; 253. Movable rod; 254. First solenoid valve; 26. Linear reciprocating drive mechanism; 261. Connecting plate; 262. Electric push rod; 27. Sample collecting mechanism; 271. Sample collecting cylinder; 272. Sealing cover; 273. Second solenoid valve; 274. First connecting pipe; 28. Water storage mechanism; 281. Water storage cylinder; 282. Second connecting pipe; 283. Third solenoid valve; 29. ​​Limiting plate. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0028] The following describes the drone for water quality sampling in an embodiment of the present application in conjunction with the accompanying drawings.

[0029] The drone for water quality sampling provided in the embodiment of the present application can be used in the field of environmental monitoring to sample water quality of water bodies, which can effectively reduce unnecessary load of the drone and improve the flight stability and controllability of the drone.

[0030] like Figure 1-Figure 4 As shown, the drone for water quality sampling of an embodiment of the present application may include a drone body 1 and a sampling component 2.

[0031] Among them, the sampling component 2 is arranged on the drone body 1, and the sampling component 2 may include a mounting frame 21, a winding and unwinding mechanism 22, a sampling box 23, a mounting plate 24, a water body pumping mechanism 25, a linear reciprocating drive mechanism 26, multiple sample collecting mechanisms 27 and multiple water storage mechanisms 28.

[0032] Among them, the mounting frame 21 is arranged on the drone body 1, and the winding and unwinding mechanism 22 is arranged on the mounting frame 21, the sampling box 23 is connected to the winding and unwinding mechanism 22, and the mounting plate 24 is detachably arranged at the bottom of the sampling box 23, the water body pumping mechanism 25 and the linear reciprocating drive mechanism 26 are respectively arranged on the mounting plate 24, the linear reciprocating drive mechanism 26 is connected to the water body pumping mechanism 25, a plurality of sample collecting mechanisms 27 and a plurality of water storage mechanisms 28 are respectively arranged on the mounting plate 24, and the plurality of sample collecting mechanisms 27 and the plurality of water storage mechanisms 28 are respectively connected to the water body pumping mechanism 25.

[0033] Specifically, under the natural state, the multiple water storage mechanisms 28 are respectively in an empty state to effectively reduce unnecessary load on the drone body 1. When sampling the water quality of the water body, the relevant personnel first control the drone body 1 to carry the sampling component 2 to fly above the water area to be sampled, and then lower the sampling box 23 to the water surface through the winding and unwinding mechanism 22, until the water body pumping mechanism 25 contacts the water surface, and then the linear reciprocating drive mechanism 26 drives the water body pumping mechanism 25 to extract water and inject it into the multiple water storage mechanisms 28, so as to increase the gravity of the sampling box 23 by the weight of the water body, so that it can overcome the buoyancy of the water body and descend to the specified sampling depth.

[0034] When the sampling box 23 descends to the specified sampling depth, the relevant personnel then drive the water extraction mechanism 25 to extract water samples through the linear reciprocating drive mechanism 26, and inject it into one of the sample collection mechanisms 27. The multiple sample collection mechanisms 27 can respectively store multiple water samples to effectively reduce the number of return trips of the drone body 1.

[0035] After the sampling is completed, the relevant personnel start the winding and unwinding mechanism 22 to retract the sampling box 23, and after the sampling component 2 leaves the water surface, the linear reciprocating drive mechanism 26 drives the water pumping mechanism 25 to extract the water in multiple water storage mechanisms 28 and discharge it into the water area, so as to effectively reduce the load of the UAV body 1, thereby effectively improving the flight stability and control performance of the UAV.

[0036] In one embodiment of the present application, Figure 1-Figure 4 As shown, the winding and unwinding mechanism 22 may include a motor 221 , a rotating rod 222 and a traction rope 223 .

[0037] Among them, the rotating rod 222 is rotatably arranged in the mounting frame 21, the traction rope 223 is wound around the rotating rod 222, and the two ends of the traction rope 223 are respectively fixedly connected to the rotating rod 222 and the sampling box 23, the motor 221 is arranged on the mounting frame 21, and the output shaft of the motor 221 is coaxially connected to one end of the rotating rod 222 through a coupling.

[0038] Specifically, relevant personnel start the motor 221 to drive the rotating rod 222 to rotate, so that the sampling box 23 straightens the traction rope 223 and descends under the action of gravity. When the motor 221 drives the rotating rod 222 to rotate in the opposite direction, since one end of the traction rope 223 is fixedly connected to the rotating rod 222, it is wound around the rotating rod 222 and pulls the sampling box 23 to reset.

[0039] In one embodiment of the present application, Figure 1-Figure 4 As shown, the water pumping mechanism 25 may include a fixed cylinder 251 , a piston 252 , a movable rod 253 and a first solenoid valve 254 .

[0040] Among them, the fixed cylinder 251 is fixedly set on the mounting plate 24, and the bottom end of the fixed cylinder 251 is located below the mounting plate 24, the piston 252 is adapted to the inner wall of the fixed cylinder 251, and the piston 252 is slidably set up and down in the fixed cylinder 251, one end of the movable rod 253 is fixedly connected to the piston 252, and the other end of the movable rod 253 passes through the bottom of the fixed cylinder 251 and extends to the outside of the fixed cylinder 251, the first solenoid valve 254 is set at the bottom of the fixed cylinder 251, and the first solenoid valve 254 is connected to the inside of the fixed cylinder 251.

[0041] In one embodiment of the present application, the linear reciprocating drive mechanism 26 may include a connecting plate 261 and a plurality of electric push rods 262 .

[0042] Among them, the connecting plate 261 is fixedly set on one end of the movable rod 253 away from the piston 252, and multiple electric push rods 262 are respectively arranged in the sampling box 23. The movable ends of the multiple electric push rods 262 respectively penetrate the bottom of the sampling box 23 and are fixedly connected to the connecting plate 261.

[0043] In one embodiment of the present application, the sample collecting mechanism 27 may include a sample collecting cylinder 271 , a sealing cover 272 , a second solenoid valve 273 and a first connecting pipe 274 .

[0044] Among them, the sample collecting cylinder 271 is fixedly set on the mounting plate 24, the two ends of the first connecting tube 274 are respectively connected to the sample collecting cylinder 271 and the fixed cylinder 251, the top of the sample collecting cylinder 271 is set to be open, and the sealing cover 272 is detachably connected to the top of the sample collecting cylinder 271, and the second solenoid valve 273 is set on the first connecting tube 274.

[0045] In one embodiment of the present application, the water storage mechanism 28 may include a water storage cylinder 281 , a second connecting pipe 282 and a third solenoid valve 283 .

[0046] The water storage cylinder 281 is fixedly arranged on the mounting plate 24 , and two ends of the second connecting pipe 282 are fixedly connected to the water storage cylinder 281 and the fixing cylinder 251 respectively, and the third solenoid valve 283 is arranged on the second connecting pipe 282 .

[0047] As a possible situation, the sampling box 23 described in this embodiment is also provided with a battery (not shown in the figure) and a controller (not shown in the figure), and the controller, the first solenoid valve 254, the second solenoid valve 273, the third solenoid valve 283 and the plurality of electric push rods 262 are respectively electrically connected to the battery through wires, and the first solenoid valve 254, the second solenoid valve 273, the third solenoid valve 283 and the plurality of electric push rods 262 are respectively connected to the controller signal.

[0048] As another possible situation, the water storage cylinder 281 and the sample collecting cylinder 271 described in this embodiment are both provided with a one-way pressure relief valve (not shown in the figure) to release the pressure through the pressure relief valve when the pressure in the water storage cylinder 281 and the sample collecting cylinder 271 is too high.

[0049] Specifically, under the natural state, the first solenoid valve 254, the second solenoid valve 273 and the third solenoid valve 283 are all in a closed state. When the sampling box 23 is counterweighted, the sampling box 23 first descends above the water surface and contacts the water surface at the bottom of the fixed cylinder 251. The relevant personnel control the first solenoid valve 254 to open, and start the electric push rod 262 to control the movable end to reset, so as to drive the movable rod 253 and the piston 252 to move upward through the connecting plate 261, and then the piston 252 extracts a part of the water into the fixed cylinder 251 through the first solenoid valve 254. Subsequently, the first solenoid valve 254 is closed, and multiple third solenoid valves 283 are opened. The relevant personnel then drive the piston 252 downward through the electric push rod 262 to inject the water in the fixed cylinder 251 into the water storage cylinder 281 through the second connecting pipe 282 and the third solenoid valve 283. The above operation is repeated until enough weight of water is stored in the water storage cylinder 281, so that the sampling box 23 can overcome the buoyancy of the water body and descend to the deep water body for sampling.

[0050] When sampling water at a specified depth, the third solenoid valve 283 is always in a closed state. The relevant personnel control the first solenoid valve 254 to open and the second solenoid valve 273 to close, and then drive the piston 252 through the electric push rod 262 to extract the water sample into the fixed cylinder 251. Then, one of the second solenoid valves 273 is controlled to open, the first solenoid valve 254 is closed, and the electric push rod 262 drives the piston 252 to inject the water sample into one of the sample collecting cylinders 271 through the first connecting tube 274 and the second solenoid valve 273. Then, the above operation can be repeated multiple times and multiple water samples can be saved separately through multiple sample collecting cylinders 271 to reduce the number of return trips of the drone body 1.

[0051] When the sampling is completed, the relevant personnel control the second solenoid valve 273 and the first solenoid valve 254 to close, and the third solenoid valve 283 to open, so as to extract the water in the water storage cylinder 281 into the fixed cylinder 251 through the piston 252, and then close the third solenoid valve 283, and open the first solenoid valve 254 to discharge the water from the fixed cylinder 251 through the first solenoid valve 254, thereby achieving the purpose of reducing unnecessary load on the drone body 1.

[0052] In one embodiment of the present application, Figure 1-Figure 4 As shown, the sampling box 23 is in the shape of a truncated cone that is wide at the top and narrow at the bottom. Limiting plates 29 are respectively provided on both sides of the inner wall of the mounting frame 21, and the limiting plates 29 are located between the rotating rod 222 and the sampling box 23.

[0053] In one embodiment of the present application, a plurality of water through holes are provided on the connecting plate 261 .

[0054] Specifically, by setting the sampling box 23 to be a truncated cone that is wide at the top and narrow at the bottom, and opening a plurality of water-passing holes on the connecting plate 261, the resistance of the sampling box 23 when it descends in the water body is reduced, so that it can more easily reach the area of ​​the specified depth for sampling operations.

[0055] In summary, the drone for water quality sampling in the embodiment of the present application can use the weight of the water body to counterweight the sampling component, so that it can overcome the buoyancy of the water body to complete deep water sampling, and can discharge excess water after the sampling is completed, so as to effectively reduce unnecessary load on the drone and improve the flight stability and control performance of the drone.

[0056] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A drone for water quality sampling, characterized in that: It includes a drone body and a sampling component, wherein: The sampling assembly is arranged on the drone body, and the sampling assembly includes a mounting frame, a winding mechanism, a sampling box, a mounting plate, a water body pumping mechanism, a linear reciprocating drive mechanism, a plurality of sample collecting mechanisms and a plurality of water storage mechanisms, wherein: The mounting frame is arranged on the drone body, and the reeling mechanism is arranged on the mounting frame; The sampling box is connected to the winding mechanism, and the mounting plate is detachably arranged at the bottom of the sampling box; The water body pumping mechanism and the linear reciprocating drive mechanism are respectively arranged on the mounting plate, and the linear reciprocating drive mechanism is connected to the water body pumping mechanism; The plurality of sample collecting mechanisms and the plurality of water storage mechanisms are respectively arranged on the mounting plate, and the plurality of sample collecting mechanisms and the plurality of water storage mechanisms are respectively connected to the water body pumping mechanism.

2. The drone for water quality sampling according to claim 1, characterized in that: The winding and unwinding mechanism includes a motor, a rotating rod and a traction rope, wherein: The rotating rod is rotatably arranged in the mounting frame; The traction rope is wound around the rotating rod, and the two ends of the traction rope are fixedly connected to the rotating rod and the sampling box respectively; The motor is arranged on the mounting frame, and the output shaft of the motor is coaxially connected to one end of the rotating rod through a coupling.

3. The drone for water quality sampling according to claim 1, characterized in that: The water pumping mechanism comprises a fixed cylinder, a piston, a movable rod and a first electromagnetic valve, wherein: The fixing tube is fixedly arranged on the mounting plate, and the bottom end of the fixing tube is located below the mounting plate; The piston is matched with the inner wall of the fixed cylinder, and the piston is slidably arranged in the fixed cylinder up and down; One end of the movable rod is fixedly connected to the piston, and the other end of the movable rod passes through the bottom of the fixed cylinder and extends to the outside of the fixed cylinder; The first solenoid valve is disposed at the bottom of the fixing cylinder, and the first solenoid valve is communicated with the interior of the fixing cylinder.

4. The drone for water quality sampling according to claim 3, characterized in that: The linear reciprocating drive mechanism includes a connecting plate and a plurality of electric push rods, wherein: The connecting plate is fixedly arranged on an end of the movable rod away from the piston; The plurality of electric push rods are respectively arranged in the sampling box, and the movable ends of the plurality of electric push rods respectively penetrate the bottom of the sampling box and are fixedly connected to the connecting plate.

5. The drone for water quality sampling according to claim 3, characterized in that: The sample collecting mechanism comprises a sample collecting tube, a sealing cover, a second solenoid valve and a first connecting pipe, wherein: The sample collecting cylinder is fixedly arranged on the mounting plate, and two ends of the first connecting tube are respectively connected with the sample collecting cylinder and the fixed cylinder; The top of the sample collecting cylinder is set to be open, and the sealing cover is detachably connected to the top of the sample collecting cylinder; The second solenoid valve is arranged on the first connecting pipe.

6. The drone for water quality sampling according to claim 3, characterized in that: The water storage mechanism includes a water storage cylinder, a second connecting pipe and a third solenoid valve, wherein: The water storage cylinder is fixedly arranged on the mounting plate, and two ends of the second connecting pipe are fixedly connected to the water storage cylinder and the fixing cylinder respectively; The third solenoid valve is disposed on the second connecting pipe.

7. The drone for water quality sampling according to claim 2, characterized in that: The sampling box is in the shape of a truncated cone that is wide at the top and narrow at the bottom; Limiting plates are respectively arranged on both sides of the inner wall of the mounting frame, and the limiting plates are located between the rotating rod and the sampling box.

8. The drone for water quality sampling according to claim 4, characterized in that: The connecting plate is provided with a plurality of water through holes.

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