Water body sampling device for unmanned aerial vehicle

Abstract

The application discloses a water body sampling device for an unmanned plane, and relates to the field of water body sampling.The water body sampling device comprises a fuselage and a frame, the bottom of the frame is connected with a chassis, the chassis is fixedly installed at the bottom of the fuselage, the bottom of the chassis is fixedly connected with landing gears on both sides, the top of the frame is fixedly connected with a collecting cylinder, and the collecting cylinder is connected with a sampling assembly for collecting water samples.The sampling assembly comprises a dual-purpose pump and a sampling pipe, the sampling pipe is connected with a rotating disc, the rotating disc is connected with the frame through a rotating shaft, the rotating shaft is connected with a cleaning device, and the cleaning device simultaneously cleans the outer side of the sampling pipe.The bottom of the sampling pipe is connected with a submersible pump, and the submersible pump is provided with a protection adjusting device.The application has the advantages that after the sampling assembly enters the water body, the protection adjusting device can adjust the state of the sampling assembly, the water flow thrust can be overcome through the air flow back thrust effect, the interference of fish in the water body can be avoided through the air flow sound production piece, and the sampling efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water sampling, and more particularly to a water sampling device for unmanned aerial vehicles (UAVs). Background Technology

[0002] Unmanned aerial vehicle (UAV) water sampling is a technology that uses unmanned aerial vehicles equipped with sampling equipment to automatically or semi-automatically sample water bodies such as rivers, lakes, and oceans. This technology can significantly improve sampling efficiency, reduce labor costs, and enable missions to be carried out in dangerous or hard-to-reach areas.

[0003] A search revealed Chinese Patent Publication No. CN105571904B, which discloses an automatic sampler for a water quality sampling drone, comprising a main support frame, a height sensor, a water sample collection component, a lifting device, a sample dispensing device, a sample storage device, and a control circuit board. The water sample collection component includes a submersible pump, a pressure and level sensor, a flexible water pipe, and a flow sensor. Analysis of the existing technology shows that while it can achieve fixed-depth sampling through a lifting device and the addition of a pressure and level sensor at the sampling port, in practical use, firstly, because some water bodies are in a flowing state, the collection component is prone to displacement under the influence of the water flow after being placed in the water, affecting the accuracy of fixed-point detection; secondly, the drone needs to constantly follow it, otherwise it will be pulled and its balance will be affected; and thirdly, after entering the water body, the collection component is easily affected by biological or non-biological elements in the water, easily becoming entangled with rocks, plants, etc., making obstacle crossing difficult, which affects the retrieval of the collection component. Based on this, the present invention designs a drone-based water body sampling device. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art, and to propose a water body sampling device for unmanned aerial vehicles.

[0005] A water body sampling device for unmanned aerial vehicles, comprising:

[0006] The fuselage, to which multiple blades are connected;

[0007] A frame, which is wrapped around the outer side of the middle part of the fuselage and connected to a chassis at the bottom, the chassis being fixedly installed at the bottom of the fuselage, and landing gear being fixedly connected to both sides of the bottom of the chassis;

[0008] A collection cylinder, which is inverted on top of the frame for storing sample water, is connected to a collection component for collecting sample water.

[0009] The acquisition component includes:

[0010] Dual-purpose pump;

[0011] The sampling tube has a fixed ring connected to one end via a dual-purpose pump. The fixed ring is fixed to the frame. The fixed ring and the collection cylinder are connected to a feed pipe and connected to the sampling tube via the feed pipe. The sampling tube includes an outer tube and an inner tube, and an air gap is provided between the outer tube and the inner tube.

[0012] A turntable, on which the sampling tube is wound, the turntable is connected to the frame via a rotating shaft, and a cleaning device is connected to the rotating shaft. The sampling tube is retrieved by driving the rotation of the rotating shaft, and the cleaning device cleans the outer surface of the sampling tube at the same time.

[0013] A submersible pump is connected to the bottom of the sampling tube. The dual-purpose pump and the submersible pump work together on the sampling tube to achieve the sampling of water.

[0014] The submersible pump is equipped with a protective adjustment device.

[0015] In the aforementioned UAV water sampling device, the protective adjustment device includes an outer expansion portion fitted onto the outside of a submersible pump. The bottom of the outer expansion portion has an installation groove for installing the submersible pump. The outer expansion portion is made of inflatable rubber material. An adjustment part is connected to the top of the outer expansion portion. The adjustment part includes four adjustment tubes arranged in a "+" structure. Each adjustment tube has an opening connected to an electromagnetic one-way valve. Each adjustment tube has an arc-shaped tube connected to both sides. The opening of each arc-shaped tube is directly opposite to an adjacent arc-shaped tube and is sealed with an electromagnetic one-way valve. Multiple adjustment tubes are connected to the outer side of the outer expansion portion and communicate with the interior of the outer expansion portion. The interior of the outer expansion portion communicates with the air gap in the sampling tube.

[0016] In the above-mentioned UAV water body sampling device, a frustum is provided at the connection between the sampling tube and the outer expansion part. The frustum is connected to a mounting base, which is fixed to the bottom of the chassis. The frustum and the mounting base are positioned and connected together and are equipped with an electromagnet.

[0017] In the above-mentioned UAV water body sampling device, the cleaning device includes a cleaning ring rotatably connected to the mounting base. The inner circular surface of the cleaning ring is provided with bristles. The cleaning ring is connected to a rotating part that allows it to rotate, and the rotating part is connected to a rotating shaft.

[0018] In the above-mentioned UAV water body sampling device, the rotating part includes a hydraulic cylinder, the movable end of the hydraulic cylinder is fixedly connected to a toothed plate, the toothed plate meshes with a gear, the gear is sleeved on the outside of the cleaning ring, and the mounting base has an opening that cooperates with the gear so that the toothed plate can act on the gear.

[0019] In the aforementioned UAV water sampling device, the toothed plate is configured as a right-angle structure and has a toothed portion one and a toothed portion two on two perpendicular right-angled surfaces. The toothed portion one meshes with a gear, and the toothed portion two meshes with a gear two. The gear two is connected to a synchronous pulley one via a connecting shaft. The synchronous pulley one is connected to a synchronous pulley two via a synchronous belt. The synchronous pulley two is coaxially connected to a rotating shaft. The synchronous pulley one and the synchronous belt are connected in a through groove opened in the chassis.

[0020] In the aforementioned UAV water sampling device, each of the adjusting tubes and arc-shaped tubes has a gas-emitting plate at its opening.

[0021] Compared with existing technologies, the advantages of this invention are:

[0022] 1. The present invention sets the sampling tube as an inner and outer tube structure, wherein an air gap is provided between the inner and outer tubes. This allows the outer tube to expand through inflation, which to a certain extent protects the inner tube from being eaten or damaged by animals, and the inner tube can still be used for sampling even if the outer tube is damaged.

[0023] 2. This invention achieves water sampling simultaneously using a dual-purpose pump and a submersible pump. The dual-purpose pump is located near the sampling tube, while the submersible pump is located near the bottom of the sampling tube. Therefore, the power from both sides can better achieve deep water sampling and avoid the problem of not being able to complete sampling if a single pump malfunctions.

[0024] 3. An expansion section is provided on the outside of the submersible pump. The expansion section has a hollow structure and is connected to an air gap. The pressure from the dual-purpose pump can cause the expansion section to expand. This expansion increases the volume of the expansion section, thereby increasing the buoyancy of the whole assembly with the submersible pump. After the deep sampling is completed, the submersible pump can float up to reduce the workload of the turntable in recovering the sampling tube. In addition, the expansion section is connected to an adjustment part to realize self-adjustment of position and angle, thereby facilitating the recovery of the submersible pump. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a UAV water body sampling device proposed in this invention.

[0026] Figure 2 This is a schematic diagram of the chassis structure in a water body sampling device for unmanned aerial vehicles (UAVs) proposed in this invention.

[0027] Figure 3 This is a schematic diagram of the sampling component in a water body sampling device for unmanned aerial vehicles (UAVs) proposed in this invention.

[0028] Figure 4 This is a schematic diagram of the rotating part in a UAV water sampling device proposed in this invention.

[0029] Figure 5 This is a schematic diagram of the protective adjustment device in a UAV water body sampling device proposed in this invention.

[0030] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle.

[0031] Figure 7 for Figure 6 Enlarged schematic diagram of part B.

[0032] Figure 8 This is a schematic diagram of the inner side of the frame in a water body sampling device for unmanned aerial vehicles (UAVs) proposed in this invention.

[0033] Figure 9 This is a schematic diagram of the structure of a drone in a water body sampling device proposed in this invention.

[0034] Figure 10 This is a schematic diagram of the feed pipe and fixing ring in a water body sampling device for unmanned aerial vehicles (UAVs) proposed in this invention.

[0035] In the diagram: 1. Body, 2. Frame, 3. Chassis, 4. Collection cylinder, 5. Collection component, 51. Dual-purpose pump, 52. Sampling tube, 521. Outer tube, 522. Inner tube, 523. Air jacket, 53. Fixing ring, 54. Feed pipe, 55. Turntable, 56. Rotating shaft, 57. Submersible pump, 6. Protective adjustment device, 61. Outer expansion, 62. Adjustment part, 63. Mounting slot, 621. Adjustment tube, 622. Arc tube, 63. Mounting slot, 7. Cleaning device, 71. Cleaning ring, 8. Frustum, 9. Mounting seat, 10. Rotating part, 101. Hydraulic cylinder, 102. Gear plate, 103. Gear 1, 104. Gear 2, 111. Toothed part 1, 112. Toothed part 2, 105. Connecting shaft, 106. Synchronous pulley 1, 107. Synchronous belt, 108. Synchronous pulley 2, 109. Opening, 11. Through slot, 12. Blade, 13. Landing gear. Detailed Implementation

[0036] Reference Figure 1-10 A water body sampling device for unmanned aerial vehicles includes a fuselage 1 and a frame 2. The fuselage 1 is connected to multiple blades 12. The frame 2 is wrapped around the outer side of the middle part of the fuselage 1 and is connected to a chassis 3 at the bottom. The chassis 3 is fixedly installed at the bottom of the fuselage 1, and landing gear 13 is fixedly connected to both sides of the bottom of the chassis 3.

[0037] The frame 2 is equipped with a collection cylinder 4, which is upside down on the top of the frame 2 to store sample water. The collection cylinder 4 is connected to the frame 2 by a fixing ring 53. The fixing ring 53 and the collection cylinder 4 are detachably connected, so that after the sample water is collected, the collection cylinder 4 can be directly removed and the sample water in the collection cylinder 4 can be used for experiments and analysis. The collection cylinder 4 is connected to a collection component 5 for collecting sample water.

[0038] The sampling assembly 5 includes a dual-purpose pump 51 and a sampling tube 52. The dual-purpose pump 51 is installed on the top of the frame 2. It pumps sample water through the sampling tube 52 into the collection cylinder 4 by means of suction. One end of the sampling tube 52 is connected to a fixing ring 53 via the dual-purpose pump 51. The fixing ring 53 is fixed to the frame 2. The fixing ring 53 and the collection cylinder 4 are connected to a feed pipe 54, which is connected to the sampling tube 52. The sampling tube 52 includes an outer tube 521 and an inner tube 522. An air gap 523 is provided between the outer tube 521 and the inner tube 522. Both the air gap 523 and the inner tube 522 are equipped with electromagnetic switch devices, and both are connected to the dual-purpose pump 51. The connection allows the dual-purpose pump 51 to input negative and positive pressures to the inner tube 522 and the air jacket 523 respectively. The negative pressure can be used to absorb the sample water in the inner tube 522, while the positive pressure can be used to pressurize the air jacket 523, causing the outer tube 521 to expand and output gas to the lower expansion section 61. The advantage of this setup is that the inner tube 522 is used for water sampling, while the outer tube 521 and the air jacket 523 are used to protect the inner tube 522. This ensures that the inner tube 522 can still transport sample water even if the outer tube 521 is damaged. At the same time, it can also reduce the impact of aquatic animals gnawing or damaging the collection component 5.

[0039] The sampling tube 52 is wound around the turntable 55, which is connected to the frame 2 via a rotating shaft 56. A cleaning device 7 is connected to the rotating shaft 56. The rotating shaft 56 is driven to rotate, releasing or retrieving the sampling tube 52. Simultaneously, the cleaning device 7 cleans the outer surface of the sampling tube 52. The cleaning device 7 includes a cleaning ring 71 rotatably connected to the mounting base 9. The inner surface of the cleaning ring 71 is annularly equipped with bristles. A rotating part 10 is connected to the cleaning ring 71, driving it to rotate. Since the cleaning ring 71 is located on the outside of the sampling tube 52, the rotation of the cleaning ring 71 can clean the outer surface of the sampling tube 52 during both releasing and retrieving. The rotating part 10 is connected to the rotating shaft 56 and includes a hydraulic cylinder 101. A toothed plate 102 is fixedly connected to the movable end of the hydraulic cylinder 101. The toothed plate 102 meshes with a gear 103, which is sleeved on the outside of the cleaning ring 71. The mounting base 9 has... An opening 109 mates with gear 103, allowing the gear plate 102 to act on gear 103. The gear plate 102 is configured with a right-angle structure and has a toothed portion 111 and a toothed portion 112 on its two perpendicular right-angled surfaces. Toothed portion 111 meshes with gear 103, and toothed portion 112 meshes with gear 104. Gear 104 is connected to a synchronous pulley 106 via a connecting shaft. Synchronous pulley 106 is connected via a synchronous belt 107. There is a second synchronous pulley 108, which is coaxially connected to the rotating shaft 56. The first synchronous pulley 106 and the synchronous belt 107 are connected in the through groove 11 opened in the chassis 3. In this way, the toothed plate 102 can drive the first gear 103 and the second gear 104 to rotate simultaneously. The rotation of the first gear 103 will drive the cleaning ring 71 to rotate, while the rotation of the second gear 104 will drive the rotating shaft 56 to rotate through the synchronous belt pulley structure, so as to realize the rotation and recycling of the sampling tube 52 on the turntable 55.

[0040] A submersible pump 57 is installed at the bottom of the sampling tube 52. The submersible pump 57 mainly works in the water body to transport the sample water upward. In this invention, the dual-purpose pump 51 and the submersible pump 57 work together in the sampling tube 52 to achieve water sampling.

[0041] The submersible pump 57 is equipped with a protective adjustment device 6, which includes an expansion portion 61 sleeved on the outside of the submersible pump 57. The expansion portion 61 is made of inflatable rubber material. When the expansion portion 61 is not inflated, its density, together with that of the submersible pump 57, is greater than that of water. Therefore, the sampling component 5 can automatically sink to the designated position after being placed in the water. When the expansion portion 61 is inflated by gas pressure, its density is lower due to the increased volume, and will be lower than that of water. Therefore, after the sampling is completed, it can automatically float to the surface due to buoyancy. To facilitate the rotation and retrieval of the turntable 55, the top of the outward expansion 61 is connected to an adjustment section 62. This adjustment section includes four adjustment pipes 621 arranged in a cross shape. Each adjustment pipe 621 has an electromagnetic one-way valve connected to its opening. Each adjustment pipe 621 has an arc-shaped pipe 622 connected to both sides. The opening of each arc-shaped pipe 622 is directly opposite the adjacent arc-shaped pipe 622 and sealed with an electromagnetic one-way valve. This allows each adjustment pipe 621 to achieve an air jet function, and air jets can be generated through one or two adjustment pipes 621. The reverse thrust achieves the function of adjusting its own position. Each arc-shaped tube 622 is arranged along the tangent direction of the outward expansion 61. Therefore, the airflow from multiple arc-shaped tubes 622 allows the device to rotate clockwise or counterclockwise. This helps adjust the attitude of the acquisition component 5, preventing excessive torsion in the sampling tube 52, which would affect its lifespan, and also facilitates the retrieval of the sampling tube 52. Each adjustment tube 621 and the opening of each arc-shaped tube 622 is equipped with a gas-emitting plate. The airflow causes the gas-emitting plate to produce sound, which can then be used to... The surrounding animals serve as a warning to prevent their activities from interfering with the operation of the collection component 5. Multiple adjustment tubes 621 are connected to the outer side of the expansion section 61 and communicate with the interior of the expansion section 61. The interior of the expansion section 61 is connected to the air gap 523 in the sampling tube 52. A frustum 8 is provided at the connection between the sampling tube 52 and the expansion section 61. The frustum 8 is connected to a mounting base 9, which is fixed to the bottom of the chassis 3. The frustum 8 and the mounting base 9 are positioned and connected together and are equipped with an electromagnet, thereby realizing the positioning of the collection component 5 and its fixation when not in operation.

[0042] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A water body sampling device for unmanned aerial vehicles, characterized in that, include: The fuselage (1) is connected to a plurality of blades (12); The frame (2) is wrapped around the outer side of the middle part of the fuselage (1) and the bottom is connected to the chassis (3). The chassis (3) is fixedly installed at the bottom of the fuselage (1), and landing gear (13) is fixedly connected to both sides of the bottom of the chassis (3). A collection tube (4) is inverted on top of the frame (2) for storing sample water. The collection tube (4) is connected to a collection component (5) for collecting sample water. The acquisition component (5) includes: Dual-purpose pump (51); A sampling tube (52) is provided. One end of the sampling tube (52) is connected to a fixing ring (53) via a dual-purpose pump (51). The fixing ring (53) is fixed on the frame (2). The fixing ring (53) and the collection cylinder (4) are connected together by a feed pipe (54) and are connected to the sampling tube (52) via the feed pipe (54). The sampling tube (52) includes an outer tube (521) and an inner tube (522). An air jacket (523) is provided between the outer tube (521) and the inner tube (522). A turntable (55) is used to wrap the sampling tube (52) around the turntable (55). The turntable (55) is connected to the frame (2) via a rotating shaft (56). A cleaning device (7) is connected to the rotating shaft (56). The sampling tube (52) is retrieved by driving the rotating shaft (56). The cleaning device (7) cleans the outer surface of the sampling tube (52) at the same time. A submersible pump (57) is connected to the bottom of the sampling tube (52). The dual-purpose pump (51) and the submersible pump (57) work together on the sampling tube (52) to achieve the collection of water. The submersible pump (57) is equipped with a protective adjustment device (6); The protective adjustment device (6) includes an expansion part (61) sleeved on the outside of the submersible pump (57). The bottom of the expansion part (61) is provided with an installation groove (63) for installing the submersible pump (57). The expansion part (61) is made of inflatable rubber material. The top of the expansion part (61) is connected to an adjustment part (62). The adjustment part includes four adjustment tubes (621) arranged in a "+" structure. Each adjustment tube (621) is connected to an electromagnetic one-way valve at its port. Each adjustment tube (621) is connected to an arc tube (622) on both sides. The port of each arc tube (622) is directly opposite to an adjacent arc tube (622) and is sealed with an electromagnetic one-way valve. Multiple adjustment tubes (621) are connected to the outer side of the expansion part (61) and communicate with the inside of the expansion part (61). The inside of the expansion part (61) is connected to the air jacket (523) in the sampling tube (52).

2. The UAV water body sampling device according to claim 1, characterized in that: A frustum (8) is provided at the connection between the sampling tube (52) and the expansion part (61). The frustum (8) is connected to a mounting base (9). The mounting base (9) is fixed to the bottom of the chassis (3). The frustum (8) and the mounting base (9) are positioned and connected and are equipped with an electromagnet.

3. The UAV water body sampling device according to claim 2, characterized in that: The cleaning device (7) includes a cleaning ring (71) rotatably connected to the mounting base (9). The inner circular surface of the cleaning ring (71) is provided with bristles. The cleaning ring (71) is connected to a rotating part (10) that rotates it. The rotating part (10) is connected to a rotating shaft (56).

4. The UAV water body sampling device according to claim 3, characterized in that: The rotating part (10) includes a hydraulic cylinder (101), and a toothed plate (102) is fixedly connected to the movable end of the hydraulic cylinder (101). The toothed plate (102) meshes with a gear (103), and the gear (103) is sleeved on the outside of the cleaning ring (71). The mounting base (9) has an opening (109) that cooperates with the gear (103) so that the toothed plate (102) can act on the gear (103).

5. A water body sampling device for unmanned aerial vehicles according to claim 4, characterized in that: The toothed plate (102) is configured as a right-angle structure and has a toothed part one (111) and a toothed part two (112) on two perpendicular right-angled surfaces respectively. The toothed part one (111) meshes with a gear one (103), and the toothed part two (112) meshes with a gear two (104). The gear two (104) is connected to a synchronous pulley one (106) through a connecting shaft (105). The synchronous pulley one (106) is connected to a synchronous pulley two (108) through a synchronous belt (107). The synchronous pulley two (108) is coaxially connected to a rotating shaft (56). The synchronous pulley one (106) and the synchronous belt (107) are connected in a through groove (11) opened in the chassis (3).

6. The UAV water body sampling device according to claim 1, characterized in that: Each of the adjusting tubes (621) and the arc-shaped tubes (622) is provided with a gas-emitting plate at its opening.

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