Unmanned aerial vehicle for plankton sampling

Abstract

The invention discloses an unmanned aerial vehicle for plankton sampling in the technical field of plankton sampling, and the unmanned aerial vehicle comprises an unmanned aerial vehicle body, a fixing rod is fixedly mounted at the bottom end of the unmanned aerial vehicle body, a connecting cylinder is fixedly mounted at the bottom end of the fixing rod, and supporting frames are fixedly mounted at openings in two ends of the connecting cylinder; a sampling pipe is fixedly mounted in the middle of each support frame; a collecting net is fixedly installed in the middle of the connecting cylinder, a switching mechanism is arranged in the middle of the collecting net and used for controlling the center of the collecting net to be in butt joint with the sampling pipes on the left side and the right side according to the running direction of the unmanned aerial vehicle body, and shielding mechanisms are arranged at openings in the two ends of the connecting cylinder and used for blocking objects large in size in water; the problem that an existing unmanned aerial vehicle for plankton sampling does not have a one-way multi-time sampling function and a collection net self-cleaning function is solved.

Description

Technical Field

[0001] The invention relates to the technical field of plankton sampling, and in particular to a drone used for plankton sampling. Background Art

[0002] The water quality and plankton monitoring work in oceans and inland waters usually involves the sampling of water samples. During the sampling operation, water samples are obtained, and water quality information and plankton information are obtained through subsequent laboratory testing. In terms of testing requirements, in order to obtain water quality information and plankton information in an all-round way, it is usually necessary to collect water samples in different areas of the same water area. By testing water samples in different areas, the changes in various indicators in different areas of the same water area can be obtained. Therefore, the collection of water samples in set areas has become an important part of water sample collection;

[0003] In the existing technology, drones are usually used to carry plankton collection nets to collect plankton in the water in a designated area. The existing equipment has a simple structure. After collecting samples in one area, it is necessary to return immediately, take down the collected samples, and then clean the collection net before collecting in the next area. The operation is very complicated and cumbersome, which greatly consumes the energy of the staff. The frequent reciprocating operations put a considerable burden on the endurance of the drone. The existing drones used for plankton sampling do not have a single-trip multiple sampling function and a self-cleaning function for the collection net. Summary of the invention

[0004] The object of the present invention is to provide a drone for sampling plankton with a single-pass multiple sampling function and a self-cleaning function of the collection net, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drone for sampling plankton, comprising a drone body, a fixing rod fixedly installed at the bottom end of the drone body, a connecting tube fixedly installed at the bottom end of the fixing rod, a support frame fixedly installed at both end openings of the connecting tube, and a sampling tube fixedly installed in the middle of the support frame; a collection net fixedly installed in the middle of the connecting tube, a switching mechanism is provided in the middle of the collection net, the switching mechanism is used to control the center of the collection net to dock with the sampling tubes on the left and right sides according to the direction of the drone body, and a shielding mechanism is provided at both end openings of the connecting tube, and the shielding mechanism is used to block large objects in the water;

[0006] As a further solution of the present invention, the switching mechanism includes a docking ring fixedly installed at the center of the collection network, the open ends of the sampling tubes are provided with spherical valve slots, the inner sides of the spherical valve slots are rotatably connected with spherical valve cores, the tops of the spherical valve cores are fixedly installed with rotating shafts, the rotating shafts are rotatably connected with the tops of the sampling tubes through torsion springs, the tops of the sampling tubes are provided with an opening and closing mechanism, and the opening mechanism is used to drive the rotating shaft to rotate a certain angle when the docking ring is docked with the opening of the sampling tube;

[0007] As a further solution of the present invention, a guide ring is fixedly installed on the inner side of the docking ring, and two guide rods are fixedly installed between the ends of the two sampling tubes close to each other, and the guide ring is located on the outer side of the guide rod and is slidably connected thereto;

[0008] As a further solution of the present invention, elastic bands are fixedly installed on both the left and right sides of the bottom end of the docking ring, and the other ends of the two elastic bands are fixedly connected to the lower sides of the two support frames respectively;

[0009] As a further solution of the present invention, the opening mechanism includes an L-shaped rod fixedly installed at the top of the rotating shaft, the vertical end of the L-shaped rod is perpendicular to the sampling tube, and push plates are fixedly installed on the left and right sides of the top of the docking ring, and the push plates are horizontally arranged and correspond to the vertical ends of the L-shaped rod;

[0010] As a further solution of the present invention, the end of the sampling tube away from the collection net is funnel-shaped and is threadedly connected to a sealing cover;

[0011] As a further solution of the present invention, the shielding mechanism includes protective nets fixedly installed at the openings at both ends of the connecting tube, and the centers of the two protective nets are far away from the collection net and are conical.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention realizes the collection of plankton in this area into another sampling tube by setting a switching mechanism. The two sampling tubes do not interfere with each other, and the drone can perform two sampling operations in a single flight, which greatly reduces the number of reciprocating sampling of the drone, improves the efficiency of sampling plankton, saves labor, and reduces the burden on the drone. It avoids the crash of the drone due to insufficient power due to multiple reciprocating flights, reduces the collection cost, and solves the problem that the existing drones used for plankton sampling do not have a single-trip multiple sampling function.

[0014] 2. The present invention provides an opening mechanism so that when the docking ring is docked with the sampling tube, the inner side of the sampling tube is automatically opened, and when the sampling tube is idle, the opening of the sampling tube is closed to prevent the sample collected inside from flowing out and prepare for the collection of another sampling tube.

[0015] 3. The present invention provides a docking ring and a collection net. When the drone moves toward the sampling tube where collection has been completed, the collection net that has been used once is turned inside out by the push of the water flow, so that the side that filtered the plankton last time is on the outside, avoiding the plankton collected last time from being mixed with the sample collected this time, making the collected sample results more rigorous; when the water flows in from the inside of the collection net, the plankton or debris that blocked the surface of the collection net last time are washed away by the water flow, thereby realizing self-cleaning of the collection net and further reducing the workload of the staff; and solving the problem that the existing drones used for plankton sampling do not have the self-cleaning function of the collection net. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention from a front side perspective;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the internal structure of the present invention from the front viewing angle;

[0019] Figure 4 This is a schematic diagram of the connection structure between the support frame and the sampling tube in the present invention;

[0020] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0021] Figure 6 It is a schematic diagram of the connection structure between the collection network and the docking ring in the present invention;

[0022] Figure 7 This is a schematic diagram of the connection structure between the L-shaped rod and the sampling tube in the present invention;

[0023] Figure 8 It is a schematic diagram of the connection structure between the spherical valve core and the sampling tube in the present invention.

[0024] In the attached figure: 1. UAV body; 2. Fixing rod; 3. Connecting tube; 4. Support frame; 5. Sampling tube; 6. Collection net; 7. Docking ring; 8. Ball valve slot; 9. Ball valve core; 10. Rotating shaft; 11. Guide ring; 12. Guide rod; 13. Elastic band; 14. L-shaped rod; 15. Push plate; 16. Sealing cover; 17. Protective net. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 8The present invention provides a technical solution: a drone for sampling plankton, comprising a drone body 1, a fixing rod 2 is fixedly installed at the bottom end of the drone body 1, a connecting tube 3 is fixedly installed at the bottom end of the fixing rod 2, a supporting frame 4 is fixedly installed at both end openings of the connecting tube 3, and a sampling tube 5 is fixedly installed in the middle of the supporting frame 4; a collecting net 6 is fixedly installed in the middle of the connecting tube 3, a switching mechanism is arranged in the middle of the collecting net 6, and the switching mechanism is used to control the center of the collecting net 6 to connect with the sampling tubes 5 on the left and right sides according to the direction of the drone body 1, and a shielding mechanism is arranged at both end openings of the connecting tube 3, and the shielding mechanism is used to block objects with larger volume in the water;

[0026] The switching mechanism includes a docking ring 7 fixedly installed at the center of the collection net 6, and the open ends of the sampling tubes 5 are provided with spherical valve slots 8, the inner sides of the spherical valve slots 8 are rotatably connected with spherical valve cores 9, and the tops of the spherical valve cores 9 are fixedly installed with rotating shafts 10, which are rotatably connected to the tops of the sampling tubes 5 through torsion springs. The tops of the sampling tubes 5 are provided with an opening and closing mechanism, and the opening mechanism is used to drive the rotating shaft 10 to rotate a certain angle when the docking ring 7 is docked with the opening of the sampling tube 5;

[0027] During operation, the drone body 1 moves to the designated sampling area, slowly lowers the connecting tube 3 to a certain depth, starts the drone and moves toward the opening of the connecting tube 3, so that the water flow can pass through the inner side of the connecting tube 3. For example, the drone moves toward the right side. Figure 1 As shown, at this time, the water flows in from the right end of the connecting tube 3 and flows out from the left end of the connecting tube 3. When the water flows in from the right end of the connecting tube 3, the water flows push the collection net 6 and the docking ring 7 to move to the left, so that the collection net 6 in the folded state slowly stretches out until the left end of the connecting ring docks with the opening of the left sampling tube 5. At this time, the opening end of the left sampling tube 5 is on the inner side of the connecting ring and fits tightly, and the collection net 6 is fully stretched out. At the same time, the opening mechanism drives the rotating shaft 10 on the inner side of the left sampling tube 5 to rotate, and the rotating shaft 10 rotates to drive the ball valve core 9 to rotate in the ball valve groove 8, so that the inner side of the left sampling tube 5 is opened. At this time, the plankton filtered by the collection net 6 enters the inner side of the left sampling tube 5 under the flushing of the water flow. By setting the opening mechanism, when the docking ring 7 docks with the sampling tube 5, the inner side of the sampling tube 5 is automatically opened, and when the sampling tube 5 is idle, the opening of the sampling tube 5 is closed to prevent the sample collected inside from flowing out.

[0028] After the drone drives the connecting tube 3 to collect samples in the water for a certain period of time, the drone lifts the connecting tube 3 out of the water. At this time, the collecting net 6 and the docking ring 7 are no longer subject to the thrust of the water flow and are separated from the opening of the left sampling tube 5. At the same time, the rotating shaft 10 is reset under the push of the torsion spring. The reset of the rotating shaft 10 drives the ball valve core 9 to reset, thereby closing the opening of the left sampling tube 5 again, preparing for the collection of another sampling tube 5.

[0029] When one sampling tube 5 has completed the collection, the drone only needs to move to another designated area, and then put the connecting tube 3 into the water again, and then the drone moves towards the sampling tube 5 where the collection is completed, and similarly to the above, the plankton in this area is collected into another sampling tube 5. The two sampling tubes 5 do not interfere with each other, and the drone performs two sampling operations in a single flight, which greatly reduces the number of reciprocating sampling of the drone, improves the efficiency of sampling plankton, saves labor, and reduces the burden on the drone, avoiding the crash of the drone due to insufficient power due to multiple reciprocating trips, thereby reducing the collection cost;

[0030] When the drone moves toward the sampling tube 5 where collection has been completed, the collection net 6 that has been used once is turned inside out under the push of the water flow, so that the side that filtered the plankton last time is on the outside, avoiding the plankton collected last time from being mixed with the sample collected this time, making the collected sample results more rigorous; when the water flow enters from the inside of the collection net 6 this time, the plankton or debris that blocked the surface of the collection net 6 last time is washed away by the water flow, thereby achieving self-cleaning of the collection net 6, further reducing the workload of the staff; and solving the problem that the existing drones used for plankton sampling do not have the single-trip multiple sampling function and the self-cleaning function of the collection net 6.

[0031] As a further solution of the present invention, a guide ring 11 is fixedly installed on the inner side of the docking ring 7, and two guide rods 12 are fixedly installed between the ends of the two sampling tubes 5 that are close to each other, and the guide ring 11 is located on the outer side of the guide rod 12 and is slidably connected thereto; during operation, when the water flow pushes the docking ring 7 and the collection net 6 to move, the movement of the docking ring 7 drives the guide ring 11 to move, and at this time the guide rod 12 guides the guide ring 11, so that the docking ring 7 can smoothly dock with the opening of the sampling tube 5.

[0032] As a further solution of the present invention, elastic bands 13 are fixedly installed on the left and right sides of the bottom end of the docking ring 7, and the other ends of the two elastic bands 13 are fixedly connected to the lower sides of the two support frames 4 respectively; during operation, when the collection net 6 and the docking ring 7 are not in the water, the two elastic bands 13 pull the docking ring 7 from the left and right sides, so that the docking ring 7 remains at the center of the connecting tube 3; when the collection net 6 and the docking ring 7 are pushed by the water flow, the elastic band 13 in the direction of the water flow is stretched, and the elastic band 13 in the moving direction of the docking ring 7 is contracted and naturally drooped, thereby avoiding obstruction to the docking operation of the docking ring 7.

[0033] As a further solution of the present invention, the opening mechanism includes an L-shaped rod 14 fixedly installed at the top of the rotating shaft 10, the vertical end of the L-shaped rod 14 is perpendicular to the sampling tube 5, and push plates 15 are fixedly installed on the left and right sides of the top of the docking ring 7, and the push plates 15 are horizontally arranged and correspond to the vertical ends of the L-shaped rod 14; during operation, when the docking ring 7 and the sampling tube 5 are just in contact and docked, the end of the push plate 15 contacts the vertical end of the L-shaped rod 14, and with the impact of the water flow, the docking ring 7 is stably sleeved on the opening of the sampling tube 5, and at the same time, the push plate 15 pushes the rotating shaft 10 to rotate through the L-shaped rod 14, thereby providing power for the rotation of the ball valve core 9.

[0034] As a further solution of the present invention, one end of the sampling tube 5 away from the collection net 6 is funnel-shaped and is threadedly connected to a sealing cover 16; during operation, when it is necessary to take out the sample in the sampling tube 5, it is only necessary to unscrew the sealing cover 16. Since the end of the sampling tube 5 is funnel-shaped, spillage when pouring is avoided.

[0035] As a further solution of the present invention, the shielding mechanism includes protective nets 17 fixedly installed at the openings at both ends of the connecting tube 3, and the centers of the two protective nets 17 are far away from the collection net 6 and are cone-shaped; when working, the debris in the water is blocked by the protective nets 17, thereby avoiding excessive accumulation of impurities to block the collection net 6. Since the protective nets 17 are cone-shaped, the impurities are guided by the inclined surface to disperse around the connecting tube 3, and at the same time, a large amount of impurities are avoided. Accumulation on the surface of the protective nets 17; when the connecting tube 3 moves in the opposite direction, the protective net 17 on the side that has blocked the impurities is gradually cleaned by the reverse direction of the water flow, thereby realizing the self-cleaning of the protective nets 17.

Claims

1. A drone for sampling plankton, comprising a drone body (1), characterized in that: A fixing rod (2) is fixedly mounted on the bottom end of the drone body (1), a connecting tube (3) is fixedly mounted on the bottom end of the fixing rod (2), a supporting frame (4) is fixedly mounted on both end openings of the connecting tube (3), and a sampling tube (5) is fixedly mounted on the middle of the supporting frame (4); a collecting net (6) is fixedly mounted on the middle of the connecting tube (3), a switching mechanism is provided on the middle of the collecting net (6), and the switching mechanism is used to control the center of the collecting net (6) to dock with the sampling tubes (5) on the left and right sides according to the direction in which the drone body (1) is traveling; and shielding mechanisms are provided on both end openings of the connecting tube (3), and the shielding mechanisms are used to block objects with a large volume in water.

2. The drone for plankton sampling according to claim 1, characterized in that: The switching mechanism comprises a docking ring (7) fixedly installed at the center of the collection net (6), the open ends of the sampling tubes (5) are provided with spherical valve grooves (8), the inner sides of the spherical valve grooves (8) are rotatably connected with spherical valve cores (9), the top ends of the spherical valve cores (9) are fixedly installed with rotating shafts (10), the rotating shafts (10) are rotatably connected with the top ends of the sampling tubes (5) through torsion springs, and the top ends of the sampling tubes (5) are provided with opening and closing mechanisms, the opening mechanisms being used to drive the rotating shafts (10) to rotate a certain angle when the docking ring (7) is docked with the opening of the sampling tube (5).

3. The drone for plankton sampling according to claim 2, characterized in that: A guide ring (11) is fixedly installed on the inner side of the docking ring (7), and two guide rods (12) are fixedly installed between the ends of the two sampling tubes (5) that are close to each other. The guide ring (11) is located on the outer side of the guide rods (12) and is slidably connected thereto.

4. The drone for plankton sampling according to claim 2, characterized in that: Elastic bands (13) are fixedly mounted on both left and right sides of the bottom end of the docking ring (7), and the other ends of the two elastic bands (13) are fixedly connected to the lower sides of the two support frames (4) respectively.

5. The drone for plankton sampling according to claim 2, characterized in that: The opening mechanism comprises an L-shaped rod (14) fixedly mounted at the top of the rotating shaft (10), the vertical end of the L-shaped rod (14) being perpendicular to the sampling tube (5), and push plates (15) fixedly mounted on both left and right sides of the top of the docking ring (7), the push plates (15) being arranged horizontally and corresponding to the vertical ends of the L-shaped rod (14).

6. The drone for plankton sampling according to claim 1, characterized in that: One end of the sampling tube (5) away from the collection net (6) is funnel-shaped and is threadably connected to a sealing cover (16).

7. The drone for plankton sampling according to claim 1, characterized in that: The shielding mechanism comprises protective nets (17) fixedly installed at openings at both ends of the connecting tube (3); the centers of the two protective nets (17) are both far away from the collection net (6) and are in a conical shape.

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