Collecting device for monitoring fish community based on environment DNA technology

Abstract

The invention relates to the technical field of robots, in particular to a collecting device for monitoring fish communities based on an environmental DNA technology, which comprises a sampling device and a sample collecting device, a liquid sample is sucked through the sampling device, the liquid sample is stored in the sample collecting device after being conveyed, and the floating and sinking state of the collecting device is controlled through a floating device. The body adjusting device is arranged on the collecting device so that the collecting device can suspend in water, the body adjusting device controls the unfolding state of the collecting device and adjusts the suspension height of the collecting device in the water, and propeller assemblies are arranged on the two sides of the body adjusting device; the propeller assembly and the body adjusting device are matched to control the collecting device to move in water. According to the device, the whole collecting device can float on the water surface to sample a water area at the shallow position of the surface of a water body, the floating and sinking state of the whole collecting device and different heights of the whole collecting device suspended in the water can be controlled, multi-position and multi-aspect sampling is facilitated, and the sampling diversity is increased.

Description

Technical Field

[0001] The present invention relates to the field of robotics technology, and in particular to a collection device for monitoring fish communities based on environmental DNA technology. Background Art

[0002] Effectively monitoring fish diversity is crucial for implementing sustainable fisheries management and assessing the impacts of commercial fishing and climate change on fish populations. However, current methods, such as baited camera traps, trawling surveys, and acoustic monitoring, have significant limitations and often struggle to fully exploit their detection capabilities in the vast ocean environment. In contrast, environmental DNA (eDNA) technology can more accurately reflect the fish population composition of a specific habitat by detecting genetic material contained in biological materials such as skin cells and mucus shed by fish during their natural activities in the water. This innovative approach provides a new technical path for marine biodiversity research.

[0003] Currently, when sampling, sampling personnel are required to drive a boat into the corresponding waters, and then tie the sampler to a towing rope and place it in the water. The sampling operation process is very cumbersome, inconvenient for centralized sampling of large areas of water, and the overall intelligence is very poor. Summary of the Invention

[0004] The main purpose of the present invention is to overcome the deficiencies in the prior art and provide a collection device for monitoring fish communities based on environmental DNA technology.

[0005] The technical solution adopted by the present invention to achieve its technical purpose is: a collection device for monitoring fish communities based on environmental DNA technology, comprising a sampling device and a sample collection device, wherein the sampling device and the sample collection device are submerged in water, and a liquid sample is sucked by the sampling device, and the liquid sample is transported and stored in the sample collection device; A shape adjustment device and a floating device are provided above the sampling device and the sample collecting device. The floating device controls the floating state of the collecting device so that the collecting device is suspended in the water. The shape adjustment device controls the deployment state of the collecting device and adjusts the suspension height of the collecting device in the water. Propeller assemblies are provided on both sides of the shape adjustment device, and the propeller assembly and the shape adjustment device cooperate to control the movement of the collection device in the water. The propeller assembly can be driven unilaterally on the shape adjustment device for steering, or the propeller assemblies on both sides of the shape adjustment device can be driven synchronously to drive the collection device to move in a straight line in the water.

[0006] Preferably, the sampling device comprises a collection box, a collection motor, an outer tube, an arc-shaped baffle, a collection head, an inner tube, a connecting tube, a collection tube, an outer bevel gear, an inner bevel gear and a drive gear; The collection box is internally rotatably connected with an outer bevel gear and an inner bevel gear, and the driving gear is simultaneously meshed with the outer bevel gear and the inner bevel gear, and drives the outer bevel gear and the inner bevel gear to rotate forward and reverse; A collection motor is fixedly connected to one side of the driving gear. The collection motor is fixedly installed on the side wall of the collection box, and its driving shaft is fixedly connected to the driving gear. The collection motor is configured as a reciprocating motor to drive the driving gear to rotate back and forth.

[0007] One end of the outer tube passes through the collection box and is fixedly connected to the outer bevel gear, and the other end is fixedly connected to a baffle; The inner tube is located inside the outer tube, and one end thereof passes through the collection box, the outer bevel gear and is fixedly connected to the inner bevel gear, and the other end is fixedly connected to a collection head with a spherical structure; The connecting tube is located inside the inner tube, and one end of the connecting tube passes through the inner tube and is connected to the sample collecting device in the collection box, and the other end passes through the collection head and is fixedly connected to the collection tube, one end of which fits inside the collection head.

[0008] Preferably, the collection tube is configured as a symmetrical "human" shaped structure, and the collection end of the collection tube fits into the interior of the collection head and remains flush with the outer wall of the collection head.

[0009] Preferably, the baffle is configured as an arc-shaped structure and fits snugly onto the outer wall of the collection head, with both ends of the baffle blocking the collection end of the collection tube.

[0010] Preferably, the sample collecting device comprises a sample collecting bottle, a sample collecting solenoid valve, a main connecting pipe, a delivery pump and a bottle stopper; The sample collecting bottle is fixedly installed on the top of the collection box, one end of the sample collecting bottle is fixedly connected to a sample collecting solenoid valve through a branch pipe, and the other end is threadedly fixed with a bottle stopper, one end of the sample collecting solenoid valve is fixedly connected to a main connecting pipe, and the main connecting pipe is fixedly connected to the water outlet end of the delivery pump; After one end of the connecting pipe passes through the inner pipe, it is fixedly connected to the water inlet end of the delivery pump inside the collection box; The delivery pump is fixedly mounted on the other side wall of the collection box, opposite to the collection motor. The delivery pump and the collection motor are arranged opposite to each other, which can balance the weight on both sides of the collection box, so that the collection box remains balanced.

[0011] Preferably, the sample collection bottle is composed of a plurality of independent collection bottles fixed side by side; The sample collection solenoid valve includes a hollow plate, an electromagnetic valve, a main connection port, and branch communication ports. The number of the electromagnetic valves and the branch communication ports corresponds to that of the collection bottles, and each electromagnetic valve can independently control the collection bottle. The main connecting pipe is fixedly communicated to the inside of the hollow plate through the main connection port.

[0012] Preferably, the shape adjusting device includes an electrically remotely controlled telescopic rod and a box body. Concave-shaped shells are arranged on both sides of the box body. A chain belt is arranged inside the concave-shaped shells. The two ends of the chain belt are respectively connected and stretched open through a driving serrated column and a driven serrated column, and the two ends of the driving serrated column and the driven serrated column are rotatably connected inside the concave-shaped shells. A driven gear is fixedly sleeved on the outer wall of the middle end of the driving serrated column. A driving gear is meshed with one side of the driven gear. One side of the driving gear is fixedly connected with a transmission rod. The transmission rod is connected to the concave-shaped shell through a fixing plate, and one end of it is drivingly connected with a driving rod. One end of the driving rod passes through the concave-shaped shell and is fixedly connected with a motor. The motor is fixedly installed on the concave-shaped shell, and the driving rod is driven by the motor. A rotational connection is maintained between the fixing plate and the transmission rod, and the fixing plate restricts the position of the transmission rod. One end of the motor is fixedly connected with a crowbar. The crowbar passes through the box body and is rotatably connected inside the box body through a support shaft. A through groove is formed inside the side wall of the box body to facilitate the crowbar to pass through the box body. A bearing is fixedly sleeved on one end of the crowbar. Connecting plates are hinged to both sides of the bearing through rotating shafts. Through the arrangement of the bearing and the connecting plates, it is convenient to drive one end of the crowbar to rotate based on the support shaft as a fulcrum. The telescopic rod is fixedly installed on the box body. The movable end of the telescopic rod passes through the box body and is fixedly connected to the top of the connecting plate. The connecting plate is driven to move up and down by the telescopic rod. A hose is sleeved outside the motor. The two ends of the hose are respectively fixedly connected to the concave-shaped shell and the box body.

[0013] Preferably, the propeller assembly includes a propeller, a core rod, a wide-body gear, and a bridging rod. A wide-body gear is also drivingly connected inside the chain belt. A core rod is fixedly penetrated inside the wide-body gear. The two ends of the core rod are rotatably connected to the inner side wall of the concave-shaped shell. At the same time, the middle end of the core rod is fixedly connected to the inner top wall of the concave-shaped shell through a bridging rod. One end of the mandrel passes through the side wall of the concave housing and is fixedly connected to a propeller. The wide-body gear is driven to rotate by a chain belt, so that the mandrel rotates, and thus the propeller rotates.

[0014] Preferably, the buoy device includes a sliding sleeve, a T-shaped rod, a spring, an airbag, an air pipe, a pneumatic valve solenoid, an air disc and an air pump; The air disc and the sliding sleeve are fixedly installed on the concave housing. The sliding sleeve is arranged in a bent structure. A T-shaped rod is slidably connected inside the vertical part of the sliding sleeve. A spring is arranged between the T-shaped rod and the sliding sleeve for elastic connection, and an airbag is fixedly connected to the bottom of its flat part; The spring is sleeved outside the sliding sleeve and the T-shaped rod, and one end of it is located at the bent part of the sliding sleeve, and the other end is fixedly connected to the flat part of the T-shaped rod; The combined structure of the sliding sleeve, the T-shaped rod, the spring and the airbag is provided with multiple groups and is distributed in a circular array around the air disc; The air pump is fixedly arranged inside the air disc, and it is connected with a plurality of air pipes through a branch joint. One end of the air pipe sequentially passes through the horizontal part of the sliding sleeve, the vertical part of the sliding sleeve and the inside of the T-shaped rod and is fixedly communicated with the airbag.

[0015] Pneumatic valve solenoids are fixedly installed on multiple said air pipes, and every two opposing pneumatic valve solenoids are controlled by the same switch signal.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The collection device based on the environmental DNA technology for monitoring fish communities can make the overall collection device float on the water surface and sample the water area at the shallow position on the water surface through the cooperation of the buoy device, the sampling device and the sample collection device; and through the cooperation of the body shape adjustment device and the buoy device, the floating and sinking state of the overall collection device can be controlled, so that the whole device dives into the water and suspends at different heights in the water, which is convenient for sampling at multiple positions and in multiple aspects, increasing the diversity of sampling; and the collection device can also move in the water, which is convenient for sampling in a regional area, saving time and manpower. Description of the Drawings

[0017] Figure 1 It is the front view structural schematic diagram of the collection device.

[0018] Figure 2 It is the front view sectional structural schematic diagram of the sampling device and the sample collection device.

[0019] Figure 3 It is the top view structural schematic diagram of a part of the sample collection device.

[0020] Figure 4 It is the front view structural schematic diagram of the body shape adjustment device.

[0021] Figure 5 It is a schematic front sectional view of the body adjustment device.

[0022] Figure 6 It is a schematic top view of a partial structure of the body adjustment device.

[0023] Figure 7 It is a schematic top view of the float device.

[0024] Wherein: 1-Sampling device; 101-Sampling box; 102-Sampling motor; 103-Outer tube; 104-Baffle; 105-Sampling head; 106-Inner tube; 107-Connecting tube; 108-Sampling tube; 109-Outer bevel gear; 110-Inner bevel gear; 111-Driving gear; 2-Sample receiving device; 201-Sample receiving bottle; 202-Sample receiving solenoid valve; 2021-Hollow plate; 2022-Electromagnetic valve; 202320232024-Branch connection port; 203-Total connecting pipe; 204-Transfer pump; 205-Stopper; 3-Propeller; 4-Core rod; 5-Wide body gear; 6-Body adjustment device; 601-Extension rod; 602-Box body; 603-Hose; 604-Concave housing; 605-Chain belt; 606-Driven tooth column; 607-Driving tooth column; 608-Driven gear; 609-Driving gear; 610-Transmission rod; 611-Fixing plate; 612-Driving rod; 613-Motor; 614-Pry bar; 615-Support shaft; 616-Bearing; 617-Jaw; 618-Through groove; 7-Bridging rod; 8-Sliding sleeve; 801-T-shaped rod; 802-Spring; 803-Airbag; 804-Air pipe; 805-Air valve solenoid valve; 806-Air disc; 807-Air pump. Specific embodiments

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention. Embodiment 1

[0028] Please refer to Figures 1-7 , a collection device for monitoring fish communities based on environmental DNA technology, including a sampling device 1 and a sample collection device 2. The sampling device 1 and the sample collection device 2 are submerged in water. The sampling device 1 sucks liquid samples, and the liquid samples are deposited into the sample collection device 2 after being transported. Above the sampling device 1 and the sample collection device 2, a shape adjustment device 6 and a floating device are provided. The floating device controls the floating and sinking state of the collection device, so that the collection device floats in the water. The shape adjustment device 6 controls the unfolding state of the collection device and adjusts the floating height of the collection device in the water. On both sides of the shape adjustment device 6, propeller assemblies are provided. The propeller assemblies and the shape adjustment device 6 cooperate to control the movement of the collection device in the water. The propeller assemblies can be driven unidirectionally on the shape adjustment device 6 for steering, or the propeller assemblies on both sides of the shape adjustment device 6 are driven synchronously to drive the collection device to move linearly in the water.

[0029] It should be noted that the collection device is also provided with a power supply part, and the power supply can be set at the corresponding position according to needs, which will not be elaborated in detail here. In addition, a remote control is added to match signals with the collection device to increase the convenience of use. The remote control can be selectively manufactured according to actual needs, which will not be elaborated in detail here either. Embodiment 2

[0030] Please refer to Figures 1-2Based on the above embodiment, the sampling device for monitoring fish communities based on environmental DNA technology includes a sampling box 101, a sampling motor 102, an outer tube 103, an arc-shaped baffle 104, a sampling head 105, an inner tube 106, a connecting tube 107, a sampling tube 108, an outer bevel gear 109, an inner bevel gear 110, and a driving gear 111. The collection box 101 is internally rotatably connected to an outer bevel gear 109 and an inner bevel gear 110. The driving gear 111 is simultaneously engaged with the outer bevel gear 109 and the inner bevel gear 110, and drives the outer bevel gear 109 and the inner bevel gear 110 to rotate forward and reverse. A collection motor 102 is fixedly connected to one side of the driving gear 111. The collection motor 102 is fixedly installed on the side wall of the collection box 101, and its driving shaft is fixedly connected to the driving gear 111. The collection motor 102 is configured as a reciprocating motor to drive the driving gear 111 to rotate reciprocatingly.

[0031] One end of the outer tube 103 passes through the collection box 101 and is fixedly connected to the outer bevel gear 109, and the other end is fixedly connected to the baffle 104; The inner tube 106 is located inside the outer tube 103, and one end thereof passes through the collection box 101, the outer bevel gear 109 and is fixedly connected to the inner bevel gear 110, and the other end is fixedly connected to the collection head 105 with a spherical structure; The connecting tube 107 is located inside the inner tube 106, and one end of it passes through the inner tube 106 and is connected to the sample collecting device 2 in the collection box 101, and the other end passes through the collection head 105 and is fixedly connected to the collection tube 108, one end of which fits inside the collection head 105.

[0032] The collection tube 108 is configured in a symmetrical "H" shape. The collection end of the collection tube 108 fits inside the collection head 105 and remains flush with the outer wall of the collection head 105. The baffle 104 is configured in an arc-shaped structure and fits snugly over the outer wall of the collection head 105. The ends of the baffle 104 block the collection end of the collection tube 108.

[0033] Specifically, when in use, by starting the collection motor 102 to drive the outer bevel gear 109 and the inner bevel gear 110 to rotate forward and reverse, the outer tube 103 and the inner tube 106 maintain a forward and reverse rotation state. At this time, the baffle 104 and the collection head 105 also maintain a forward and reverse rotation. Since one end of the collection tube 108 fits into the interior of the collection head 105, the baffle 104 and one end of the collection tube 108 form an interlaced trend, and the baffle 104 will not block the collection tube 108. After the baffle 104 is sealed with one end of the collection tube 108 inside the collection head 105 next time, it is regarded as a rotation cycle. During this cycle, the baffle 104 will not block the collection tube 108, so that sampling is performed through the connecting tube 107 and the collection tube 108.

[0034] In order to prevent the connecting tube 107 from being entangled inside the collection box 101, the collection motor 102 is set as a reciprocating motor, so that one end of the connecting tube 107 will not be always entangled in one direction, and only one cycle of rotation length is reserved.

[0035] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 3

[0036] See also Figures 1-3 On the basis of the above embodiment, the sampling device for monitoring fish communities based on environmental DNA technology, the sampling device 2 includes a sampling bottle 201, a sampling solenoid valve 202, a main connecting pipe 203, a delivery pump 204 and a bottle stopper 205; The sample collecting bottle 201 is fixedly mounted on the top of the collection box 101. The sample collecting bottle 201 is composed of a plurality of independent collecting bottles fixed side by side. One end of the sample collection bottle 201 is fixedly connected to a sample collection solenoid valve 202 via a branch pipe, and the other end is threadedly fixed with a bottle stopper 205. The sample collection solenoid valve 202 includes a hollow plate 2021, a solenoid valve 2022, a main connection port 2023, and a branch connection port 2024. The number of solenoid valves 2022 and branch connection ports 2024 corresponds to the number of collection bottles. Each solenoid valve 2022 can independently control the collection bottle. One end of the sample receiving solenoid valve 202 is fixedly connected to a main connecting pipe 203, which is fixedly connected to the interior of the hollow plate 2021 through a main connecting port 2023. The main connecting pipe 203 is fixedly connected to the water outlet end of the delivery pump 204; After one end of the connecting tube 107 passes through the inner tube 106, it is fixedly connected to the water inlet end of the delivery pump 204 inside the collection box 101; The delivery pump 204 is fixedly installed on the other side wall of the collection box 101, opposite to the collection motor 102. The delivery pump 204 and the collection motor 102 are arranged opposite to each other, which can balance the weight of both sides of the collection box 101, so that the collection box 101 remains balanced.

[0037] Specifically, during use, samples are collected by connecting the delivery pump 204, the connecting tube 107 and the collection tube 108, and then the samples are separately delivered to multiple sample collection bottles 201 through the main connecting tube 203 and the sample collection solenoid valve 202. Since the sample collection solenoid valve 202 is provided with multiple independent branch connecting ports 2024 and corresponding solenoid valves 2022, each solenoid valve 2022 can independently control the collection bottle, so that independent sampling of each area can be achieved.

[0038] In addition, it should be noted that, since there is no sample in the connecting tube 107, the collecting tube 108, the main connecting tube 203, the delivery pump 204, and the sample receiving solenoid valve 202 during the first sample collection, and they are in an empty state, the sample sucked in by one reciprocating rotation cycle of the collecting motor 102 is set to just fill the connecting tube 107, the collecting tube 108, the main connecting tube 203, the delivery pump 204, and the sample receiving solenoid valve 202. Therefore, during the first sample collection, at least two cycles of forward and reverse rotation of the collecting motor 102 are required. One cycle is used to fill the above components, and the next cycle is used to input the sample in the above components into the sample receiving bottle 201. By analogy, when the sample is sucked into the next sample receiving bottle 201, at least two cycles of time are also required to collect the sample. In other words, one forward and reverse rotation of the collecting motor 102 can be regarded as one large cycle, but the amount of sample in the sample receiving bottle 201 during the first sample collection is relatively small.

[0039] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 4

[0040] See also Figure 1 and Figures 4-6 On the basis of the above embodiments, the collection device for monitoring fish communities based on environmental DNA technology, the shape adjustment device 6 includes an electrically remote-controlled telescopic rod 601 and a box body 602.

[0041] Concave shells 604 are provided on both sides of the box body 602, and a chain belt 605 is provided inside the concave shell 604. The two ends of the chain belt 605 are connected and stretched by the active tooth column 607 and the driven tooth column 606 respectively. The two ends of the active tooth column 607 and the driven tooth column 606 are rotatably connected inside the concave shell 604.

[0042] A driven gear 608 is fixedly sleeved on the outer wall of the middle end of the driving serrated column 607. One side of the driven gear 608 is meshed and connected with a driving gear 609. One side of the driving gear 609 is fixedly connected with a transmission rod 610. The transmission rod 610 is connected to the concave housing 604 through a fixing plate 611, and one end of it is drivingly connected with a driving rod 612. One end of the driving rod 612 passes through the concave housing 604 and is fixedly connected with a motor 613. The motor 613 is fixedly installed on the concave housing 604, and the driving rod 612 is driven by the motor 613.

[0043] A rotational connection is maintained between the fixing plate 611 and the transmission rod 610, and the fixing plate 611 restricts the position of the transmission rod 610; one end of the motor 613 is fixedly connected with a pry bar 614. The pry bar 614 passes through the box body 602, and it is rotationally connected inside the box body 602 through a support shaft 615; a through groove 618 is provided inside the side wall of the box body 602 to facilitate the pry bar 614 to pass through the box body 602.

[0044] A bearing 616 is fixedly sleeved on one end of the pry bar 614. Both sides of the bearing 616 are hinged with a connecting plate 617 through a rotating shaft; through the arrangement of the bearing and the connecting plate, it is convenient to drive one end of the pry bar to rotate based on the support shaft as a fulcrum. The telescopic rod 601 is fixedly installed on the box body 602. The movable end of the telescopic rod 601 passes through the box body 602 and is fixedly connected to the top of the connecting plate 617. The connecting plate 617 is driven to move up and down by the telescopic rod 601.

[0045] A hose 603 is sleeved outside the motor 613. Both ends of the hose 603 are fixedly connected to the concave housing 604 and the box body 602 respectively.

[0046] The propeller assembly includes a propeller 3, a mandrel 4, a wide-body gear 5 and a bridging rod 7.

[0047] A wide-body gear 5 is also drivingly connected inside the chain belt 605. A mandrel 4 is fixedly penetrated inside the wide-body gear 5. Both ends of the mandrel 4 are rotationally connected to the inner side wall of the concave housing 604. At the same time, the middle end of the mandrel 4 is fixedly connected to the inner top wall of the concave housing 604 through a bridging rod 7; among them, one end of the mandrel 4 passes through the side wall of the concave housing 604 and is fixedly connected with a propeller 3. The wide-body gear 5 is driven to rotate by the chain belt 605, so that the mandrel 4 rotates, and thus the propeller 3 rotates.

[0048] Specifically, during use, by synchronously or individually starting two motors 613, they drive the drive rod 612 and the transmission rod 610 to rotate, so that the drive gear 609 drives the driven gear 608 to rotate, so that the driving serrated column 607 and the driven serrated column 606 drive the chain belt 605 to transmit power. The chain belt 605 drives a plurality of wide-body gears 5 to rotate, causing the mandrel 4 to rotate, and thus causing the propeller 3 to rotate, providing thrust through the propeller 3; when the two motors 613 are started synchronously, the propellers 3 on both sides provide thrust simultaneously, which can push the entire device to move. When one of the motors 613 is started, the propeller 3 on one side provides thrust, enabling steering.

[0049] When it is necessary to change the shape of the shape adjustment device 6, it can cooperate with the float device to dive into the water. By starting the telescopic rod 601, it drives one end of the two pry bars 614 to rotate upward or downward simultaneously. When one end of the two pry bars 614 rotates upward simultaneously, the expansion range of the entire shape adjustment device 6 becomes larger, the direct contact area with water becomes larger, and the buoyancy received increases. When one end of the two pry bars 614 rotates downward simultaneously, the range of the entire shape adjustment device 6 becomes smaller, the direct contact area with water becomes smaller, and the buoyancy received decreases.

[0050] The solutions in this embodiment can be selectively combined and used with the solutions in other embodiments. Embodiment 5

[0051] Please refer to Figure 1 、 4 Figures 6, 7, on the basis of the above embodiments, for the collection device for monitoring fish communities based on environmental DNA technology, the float device includes a sliding sleeve 8, a T-shaped rod 801, a spring 802, an airbag 803, an air pipe 804, a pneumatic valve solenoid 805, an air disk 806, and an air pump 807; The air disk 806 and the sliding sleeve 8 are fixedly installed on the concave housing 604. The sliding sleeve 8 is arranged in a bent structure. The vertical part of the sliding sleeve 8 is internally slidably connected with a T-shaped rod 801. A spring 802 is elastically connected between the T-shaped rod 801 and the sliding sleeve 8, and an airbag 803 is fixedly connected to the bottom of its flat part; the spring 802 is sleeved outside the sliding sleeve 8 and the T-shaped rod 801, and one end of it is located at the bent part of the sliding sleeve 8, and the other end is fixedly connected to the flat part of the T-shaped rod 801; the combined structure of the sliding sleeve 8, the T-shaped rod 801, the spring 802, and the airbag 803 is provided with multiple groups and is distributed in an annular array around the air disk 806.

[0052] The air pump 8 provides thrust, enabling steering.

[0053] It should be noted that valve solenoid valves 805 are fixedly installed on multiple air pipes 804, and every two opposing valve solenoid valves 805 are controlled by the same switch signal. The two opposing valve solenoid valves 805 are controlled by the same switch, which can ensure that the air pump 807 simultaneously sucks the gas in two opposing air bags 803, ensuring overall symmetry, so that the overall structure is relatively balanced.

[0054] Specifically, when in use, by opening all the valve solenoid valves 805, the air pump 807 can inflate all the air bags 803, causing the air bags 803 to expand. When multiple air bags 803 expand, the entire device can float on the water surface.

[0055] When the entire device needs to dive into the water, the air pump 807 sucks the gas in all the air bags 803, causing the air bags 803 to deflate, and folding the shape of the deformable body adjusting device 6, enabling the entire device to dive. For easy sampling, the entire device can be suspended in the water. By opening two or more opposing air bags 803, the buoyancy received by the entire device can be increased, enabling suspension. At the same time, it can also cooperate with the deployment of the deformable body adjusting device 6 and cooperate with the air bags 803 for suspension, increasing the adjustability of the suspension height.

[0056] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use.

[0057] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural, equivalent process, or equivalent function transformations made using the content of the specification and drawings of the present invention, and directly or indirectly applying the above technical solutions to other related technical fields, are all included within the protection scope of the present invention patent.

Claims

1. A collection device for monitoring fish communities based on environmental DNA technology, characterized in that: It comprises a sampling device (1) and a sample collecting device (2), wherein the sampling device (1) and the sample collecting device (2) are submerged in water, and a liquid sample is sucked through the sampling device (1), and the liquid sample is transported and stored in the sample collecting device (2); A shape adjustment device (6) and a floating device are provided above the sampling device (1) and the sample collecting device (2). The floating device controls the floating state of the collecting device so that the collecting device is suspended in the water. The shape adjustment device (6) controls the unfolding state of the collecting device and adjusts the suspension height of the collecting device in the water. Propeller assemblies are provided on both sides of the shape adjustment device (6), and the propeller assemblies and the shape adjustment device (6) cooperate to control the movement of the collection device in the water. The propeller assembly on the shape adjustment device (6) can be driven unilaterally to perform steering, or the propeller assemblies on both sides of the shape adjustment device (6) can be driven synchronously to drive the collection device to move linearly in the water.

2. The collection device for monitoring fish communities based on environmental DNA technology according to claim 1, characterized in that: The sampling device (1) comprises a collection box (101), a collection motor (102), an outer tube (103), an arc-shaped baffle (104), a collection head (105), an inner tube (106), a connecting tube (107), a collection tube (108), an outer bevel gear (109), an inner bevel gear (110), and a driving gear (111); The collection box (101) is internally rotatably connected to an outer bevel gear (109) and an inner bevel gear (110), and the driving gear (111) is simultaneously meshed with the outer bevel gear (109) and the inner bevel gear (110), and drives the outer bevel gear (109) and the inner bevel gear (110) to rotate forward and reverse; One end of the outer tube (103) passes through the collection box (101) and is fixedly connected to the outer bevel gear (109), and the other end is fixedly connected to a baffle (104); The inner tube (106) is located inside the outer tube (103), and one end thereof passes through the collection box (101), the outer bevel gear (109) and is fixedly connected to the inner bevel gear (110), and the other end thereof is fixedly connected to a collection head (105) with a spherical structure; The connecting tube (107) is located inside the inner tube (106), and one end of the connecting tube passes through the inner tube (106) and is connected to the sample collecting device (2) in the collecting box (101), and the other end passes through the collecting head (105) and is fixedly connected to the collecting tube (108), and one end of the collecting tube (108) fits inside the collecting head (105).

3. The collection device for monitoring fish communities based on environmental DNA technology according to claim 2, wherein: The collection tube (108) is configured as a symmetrical "human"-shaped structure, and the collection end of the collection tube (108) fits inside the collection head (105) and remains flush with the outer wall of the collection head (105).

4. The collection device for monitoring fish communities based on environmental DNA technology according to claim 3, wherein: The baffle (104) is configured as an arc-shaped structure and fits snugly over the outer wall of the collection head (105). Both ends of the baffle (104) block the collection end of the collection tube (108).

5. The collection device for monitoring fish communities based on environmental DNA technology according to claim 2, characterized in that: The sample collecting device (2) comprises a sample collecting bottle (201), a sample collecting electromagnetic valve (202), a main connecting pipe (203), a delivery pump (204) and a bottle stopper (205); One end of the sample collecting bottle (201) is fixedly connected to a sample collecting solenoid valve (202) via a branch pipe, and the other end is threadedly fixed with a bottle stopper (205). One end of the sample collecting solenoid valve (202) is fixedly connected to a main connecting pipe (203), and the main connecting pipe (203) is fixedly connected to the water outlet end of the delivery pump (204). After one end of the connecting pipe (107) passes through the inner pipe (106), it is fixedly connected to the water inlet end of the delivery pump (204) inside the collection box (101).

6. The collection device for monitoring fish communities based on environmental DNA technology according to claim 5, characterized in that: The sample collecting bottle (201) is composed of a plurality of independent collecting bottles fixed side by side; The sample collection solenoid valve (202) comprises a hollow plate (2021), a solenoid valve (2022), a main connection port (2023) and a branch connection port (2024). The number of the solenoid valves (2022) and the branch connection ports (2024) corresponds to the number of the collection bottles, and each solenoid valve (222) can independently control the collection bottle. The main connecting pipe (203) is fixedly connected to the interior of the hollow plate (2021) through the main connecting port (2023).

7. The collection device for monitoring fish communities based on environmental DNA technology according to claim 1, wherein: The body shape adjustment device (6) comprises an electrically remote-controlled telescopic rod (601) and a box body (602); Concave shells (604) are provided on both sides of the box body (602), and a chain belt (605) is provided inside the concave shell (604). The two ends of the chain belt (605) are connected and stretched by a driving toothed column (607) and a driven toothed column (606), and the two ends of the driving toothed column (607) and the driven toothed column (606) are rotatably connected inside the concave shell (604); A driven gear (608) is fixedly sleeved on the outer wall of the middle end of the active toothed column (607); one side of the driven gear (608) is meshedly connected to a driving gear (609); one side of the driving gear (609) is fixedly connected to a transmission rod (610); the transmission rod (610) is connected to the concave shell (604) via a fixing plate (611); one end of the transmission rod is transmission-connected to a driving rod (612); one end of the driving rod (612) passes through the concave shell (604) and is fixedly connected to a motor (613); the motor (613) is fixedly mounted on the concave shell (604); and the driving rod (612) is driven by the motor (613); The fixed plate (611) and the transmission rod (610) are kept in rotational connection, and the fixed plate (611) limits the position of the transmission rod (610); One end of the motor (613) is fixedly connected to a pry bar (614), the pry bar (614) passes through the box body (602), and is rotatably connected to the inside of the box body (602) via a support shaft (615); A through groove (618) is provided inside the side wall of the box body (602) to facilitate the pry bar (614) to pass through the box body (602); One end of the pry bar (614) is fixedly sleeved with a bearing (616), and connecting plates (617) are hinged to both sides of the bearing (616) through rotating shafts; The telescopic rod (601) is fixedly installed on the box body (602); The movable end of the telescopic rod (601) passes through the box body (602) and is fixedly connected to the top of the connecting plate (617), and the connecting plate (617) is driven by the telescopic rod (601) to move up and down; A hose (603) is sleeved outside the motor (613), and both ends of the hose (603) are fixedly connected to the concave shell (604) and the box body (602) respectively.

8. The collection device for monitoring fish communities based on environmental DNA technology according to claim 7, characterized in that: The propeller assembly includes a propeller (3), a core rod (4), a wide-body gear (5) and a bridging rod (7); A wide-body gear (5) is also drivingly connected inside the chain belt (605), a core rod (4) is fixedly penetrated inside the wide-body gear (5), both ends of the core rod (4) are rotatably connected to the inner side wall of the concave shell (604), and at the same time, the middle end of the core rod (4) is fixedly connected to the inner top wall of the concave shell (604) through a bridging rod (7); Wherein, one end of the core rod (4) passes through the side wall of the concave shell (604) and is fixedly connected to a propeller (3).

9. The collection device for monitoring fish communities based on environmental DNA technology according to claim 1, characterized in that: The float device includes a sliding sleeve (8), a T-shaped rod (801), a spring (802), an airbag (803), an air pipe (804), a pneumatic valve solenoid (805), an air disc (806) and an air pump (807); The sliding sleeve (8) is arranged in a bent structure, a T-shaped rod (801) is slidably connected inside the vertical part of the sliding sleeve (8), a spring (802) is arranged between the T-shaped rod (801) and the sliding sleeve (8) for elastic connection, and an airbag (803) is fixedly connected to the bottom of its flat part; The combined structure of the sliding sleeve (8), the T-shaped rod (801), the spring (802) and the airbag (803) is provided with multiple groups and is distributed in a circular array around the air disc (806); The air pump (807) is fixedly arranged inside the air disc (806), and it is connected to a plurality of air pipes (804) through branch joints. One end of each air pipe (804) sequentially passes through the horizontal part of the sliding sleeve (8), the vertical part of the sliding sleeve (8) and the inside of the T-shaped rod (801) and is fixedly communicated with the airbag (803).

10. The collection device for monitoring fish communities based on environmental DNA technology according to claim 9, characterized in that: Pneumatic valve solenoids (805) are fixedly installed on a plurality of the air pipes (804), and every two opposing pneumatic valve solenoids (805) are controlled by the same switch signal.

Images