A sampling device for monitoring of zooplankton underwater

Abstract

The application relates to the technical field of underwater animal monitoring, and discloses a sampling device for underwater plankton monitoring, which solves the problems of inaccurate sampling and low efficiency, and comprises a supporting plate, a supporting rod is fixed at the bottom of the supporting plate, a cable reel is arranged on the upper surface of the supporting plate, a controller is fixed at the left side of the cable reel, a rotating rod is arranged at the left side of the controller, a fixing rod is arranged below the rotating rod, a plurality of sampling mechanisms are arranged outside the fixing rod, a filter plate is arranged in each sampling mechanism, and a sampling net is arranged at the bottom of each sampling mechanism; the sampling mechanism can move up and down underwater through the cable, so that the sampling net moves up and down, and the safety of the sampling mechanism is improved; the sampling net fixing plate at the bottom of the sampling net fixer cooperates with the sampling net supporting plate, so that the sampling net is detachable, the whole device can be repeatedly used, and the service life of the whole device is improved.

Description

Technical Field

[0001] This invention belongs to the field of underwater animal monitoring technology, specifically a sampling device for monitoring underwater zooplankton. Background Technology

[0002] Zooplankton is a collective term for heterotrophic invertebrates and chordate larvae that passively drift in water and cannot produce organic matter themselves. Zooplankton plays a crucial regulatory role in ecosystems, acting as a key link in the transfer of organic matter from primary producers to higher-trophic-level predators. Monitoring zooplankton density and species can help determine the health status of water bodies, thus achieving the goal of monitoring aquatic ecosystems.

[0003] Current underwater zooplankton sampling devices typically involve manually lowering and retrieving the sampling net, which is often susceptible to errors due to ocean currents and improper operation, thus reducing sampling accuracy. Furthermore, existing sampling devices often contain a large number of impurities during the sampling process, resulting in poor sample authenticity and low sampling efficiency. Therefore, there is an urgent need for a new sampling device for underwater zooplankton monitoring. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a sampling device for underwater zooplankton monitoring, which effectively solves the problems of low sampling efficiency and low sampling accuracy in the above-mentioned background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for underwater zooplankton monitoring, comprising a support plate, a support rod fixed to the bottom of the support plate, two cable reel fixing frames fixed to the upper surface of the support plate, a cable reel disposed between the two cable reel fixing frames, a controller fixed to the left side of the cable reel fixing frames, two rotating rod fixing plates fixed to the left side of the controller, a rotating rod disposed between the two rotating rod fixing plates, a fixed rod disposed below the rotating rod, and multiple sampling mechanism fixing rods disposed outside the fixed rods, each sampling mechanism being fixed... A sampling mechanism is fixed to the end of the rod. Each pair of sampling mechanisms is fixedly connected by a sampling mechanism connecting rod. A sampling cover plate is provided on the upper surface of the sampling mechanism. The sampling cover plate is fixedly connected to the fixed rod through a sampling cover plate moving rod. A sampling net is provided at the bottom of each sampling mechanism. A propeller is provided on the outside of each sampling mechanism. A filter plate is provided inside each sampling mechanism. Multiple filter plate holders are provided on the upper surface of each filter plate. The lower surface of each filter plate is in close contact with the upper surface of the filter plate support plate. Multiple sampling net holders are provided below each filter plate.

[0006] Preferably, a cable fixing ring is fixed to the top of the fixing rod, an underwater power supply mechanism is fixed to the lower part of the fixing rod, and a sampling camera is fixed to the bottom of the underwater power supply mechanism.

[0007] Preferably, a spiral motor is fixed to the outer surface of each sampling mechanism, and the spiral motor is rotatably connected to the propeller.

[0008] Preferably, a plurality of sampling cover plate gear fixing plates are fixed to the upper part of the outer surface of the sampling mechanism, a sampling cover plate motor fixing plate is fixed to the bottom of the sampling cover plate gear fixing plate, a sampling cover plate motor is fixed to the outside of the sampling cover plate motor fixing plate, a sampling cover plate gear is provided inside the sampling cover plate motor fixing plate, the sampling cover plate gear is rotatably connected to the sampling cover plate motor, a through hole is provided in the middle of the sampling cover plate gear fixing plate, a sampling cover plate fixing bolt is provided in the through hole in the middle of the sampling cover plate gear fixing plate, the sampling cover plate fixing bolt is meshed with the sampling cover plate gear, a sampling cover plate fixing piece is fixed to the upper surface of the sampling cover plate fixing bolt, and the lower surface of the sampling cover plate fixing piece is tightly fitted to the sampling cover plate.

[0009] Preferably, the lower surface of the sampling cover plate is in close contact with the upper surface of the sampling mechanism, the sampling cover plate moving rod is telescopic, and a sampling cover plate moving motor is fixed at the upper end of the sampling cover plate moving rod.

[0010] Preferably, the filter plate holder inside the sampling mechanism is rotatable. The filter plate holder is fixed to the inner surface of the sampling mechanism via a rotating shaft. One end of the filter plate holder is provided with a filter plate fixing motor, and the filter plate holder is rotatably connected to the filter plate fixing motor.

[0011] Preferably, a plurality of sampling net support rods are fixedly connected to the outside of the sampling net, and a sampling net support plate is fixedly connected to the top of the sampling net support rods. The upper surface of the sampling net support plate is in close contact with the lower surface of the sampling mechanism.

[0012] Preferably, a sampling net fixing plate is rotatably connected to the bottom of the sampling net fixing device at the bottom of the sampling mechanism, a sampling net fixing motor is fixed to one end of the sampling net fixing device, and the sampling net fixing plate is rotatably connected to the sampling net fixing motor.

[0013] Preferably, a cable buckle is fixedly connected inside the cable fixing ring, a cable is fixedly connected to the top of the cable buckle, the cable is wound inside the cable reel, a cable reel motor is fixed outside the cable reel fixing frame, and the cable reel motor is rotatably connected to the cable reel through a rotating shaft.

[0014] Preferably, a pulley is provided between the cable and the cable buckle. The pulley is fixed to the upper surface of the rotating rod by a fixing plate. The pulley is rotatable. A rotating rod rotation motor is fixed to one end of the rotating rod fixing plate. The rotating rod rotation motor is rotatably connected to the rotating rod through a rotating shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention uses a cable reel motor to drive the cable reel to rotate, allowing the cable to be freely extended and retracted. This enables the fixed rod to move up and down underwater, which in turn enables multiple sampling mechanisms to move up and down underwater, and the sampling net to move up and down, thereby achieving the purpose of sampling zooplankton. This ensures that the sampling mechanism can move underwater and prevent it from overturning due to the force of seawater, thus improving the safety of the sampling mechanism.

[0017] The fixing rod, sampling mechanism connecting rod, and sampling mechanism fixing rod of the present invention can fix the sampling mechanism, further improving the safety performance of the sampling mechanism. At the same time, since there are a large number of gaps between the sampling mechanism connecting rod and the sampling mechanism fixing rod and the fixing rod, the weight and volume of the entire device are reduced, thereby reducing buoyancy, reducing the tension of the cable, and increasing the service life of the cable.

[0018] This invention uses a spiral motor to drive a propeller to rotate, which allows the sampling mechanism to move horizontally underwater, thus enabling the sampling mechanism to be moved to the desired position and increasing the accuracy of sampling.

[0019] The filter plate holder and filter plate support plate of the present invention cooperate with each other to keep the filter plate fixed and at the same time make the filter plate detachable, thereby increasing the flexibility of the equipment. The filter plate of the present invention can filter larger underwater impurities to the upper part of the sampling mechanism, thereby ensuring the authenticity and accuracy of the sample taken.

[0020] This invention facilitates the installation and removal of the sampling net by using a sampling net fixing plate and a sampling net support plate at the bottom of the sampling net holder. This makes it easier for staff to remove samples. At the same time, since the sampling net is relatively fragile, when the sampling net is damaged, only the sampling net needs to be replaced, so the entire device can be reused, thereby improving the service life of the entire device. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the main view of the present invention;

[0024] Figure 2 This is a top view of the present invention;

[0025] Figure 3 This is a schematic diagram of the bottom of the present invention;

[0026] Figure 4 This is a schematic diagram of the sampling mechanism of the present invention;

[0027] Figure 5 This is a side view schematic diagram of the sampling mechanism of the present invention;

[0028] Figure 6 This is a top view schematic diagram of the sampling mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the sampling mechanism fixing rod of the present invention;

[0030] Figure 8 This is a side view schematic diagram of the sampling mechanism of the present invention.

[0031] Figure 9 This is a top view schematic diagram of the sampling mechanism of the present invention;

[0032] Figure 10 This is a schematic diagram of the sampling cover plate fixing plate of the present invention;

[0033] Figure 11 This is an enlarged schematic diagram of the sampling cover plate fixing plate of the present invention;

[0034] Figure 12 This is a schematic diagram of the internal structure of the sampling mechanism of the present invention;

[0035] Figure 13 This is a cross-sectional schematic diagram of the sampling mechanism of the present invention;

[0036] Figure 14 This is a schematic diagram of the sampling net holder of the present invention;

[0037] Figure 15 This is an enlarged schematic diagram of the sampling net holder of the present invention;

[0038] Figure 16 This is an enlarged schematic diagram of the sampling mesh of the present invention;

[0039] Figure 17 This is a magnified side view of the sampling net of the present invention;

[0040] Figure 18 This is a schematic diagram of the sampling net holder of the present invention;

[0041] Figure 19 This is an enlarged schematic diagram of the sampling net fixator of the present invention.

[0042] In the diagram: 1-Support plate; 2-Cable reel fixing frame; 3-Controller; 4-Rotating rod fixing plate; 5-Sampling mechanism; 6-Sampling cover plate; 7-Screw motor; 8-Sampling net; 9-Fixing rod; 101-Support rod; 201-Cable reel; 202-Cable reel motor; 203-Cable; 204-Cable buckle; 401-Rotating rod; 402-Rotating rod rotating motor; 403-Pulley; 501-Filter plate; 502-Filter plate holder; 503-Sampling net holder; 504-Filter plate support plate; 521-Filter plate fixing motor; 531-Sampling net fixing motor 532 - Sampling net fixing plate; 601 - Sampling cover plate moving rod; 602 - Sampling cover plate fixing piece; 611 - Sampling cover plate moving motor; 621 - Sampling cover plate fixing bolt; 622 - Sampling cover plate gear fixing plate; 623 - Sampling cover plate motor fixing plate; 624 - Sampling cover plate motor; 625 - Sampling cover plate gear; 701 - Propeller; 801 - Sampling net support plate; 802 - Sampling net support rod; 901 - Cable fixing ring; 902 - Sampling mechanism connecting rod; 903 - Sampling camera; 904 - Sampling mechanism fixing rod; 905 - Underwater power supply mechanism. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] Example 1, by Figure 1-7 , Figure 12-13The device includes a support plate 1 for supporting the entire equipment. A support rod 101 is fixed to the bottom of the support plate 1 for securing it. The support rod 101 can be fixed to the surface of a vessel or the ground, allowing the entire equipment to be installed on the ground or a vessel. Two cable reel mounting brackets 2 are fixed to the upper surface of the support plate 1. The cable reel mounting brackets 2 are made of lightweight or alloy materials. A cable reel 201 is provided between the two cable reel mounting brackets 2. The cable reel 201 is made of a cylindrical structure and lightweight material, and is used to wind the cable 203. The cable reel mounting brackets 2 are used to secure the cable reel 201. A controller 3 is fixed to the left side of the cable reel fixing frame 2. The controller 3 is used to control the entire device. Two rotating rod fixing plates 4 are fixed to the left side of the controller 3. The rotating rod fixing plates 4 are made of lightweight or alloy materials and are used to fix the rotating rod 401. A rotating rod 401 is provided between the two rotating rod fixing plates 4. The rotating rod 401 can rotate, so that the distance between the sampling mechanism 5 and the support plate 1 is different, thereby reducing the size of the entire device and facilitating installation. A fixing rod 9 is provided below the rotating rod 401. The fixing rod 9 adopts a cubic prism structure and is made of lightweight or alloy materials. The fixing rod 9 is used to fix the sampling machine. The sampling mechanism 5 and the sampling cover plate 6 are connected by a plurality of sampling mechanism fixing rods 904 on the outer side of the fixing rod 9. Each sampling mechanism fixing rod 904 has a cubic prism structure and is made of lightweight or alloy material. The sampling mechanism fixing rods 904 connect the sampling mechanism 5 and the fixing rod 9. A sampling mechanism 5 is fixed to the end of each sampling mechanism fixing rod 904. The sampling mechanism 5 has a cuboid barrel structure and is made of alloy material. The sampling mechanism 5 is used for sampling zooplankton. Every two sampling mechanisms 5 are fixedly connected by a sampling mechanism connecting rod 902, which is also made of lightweight or alloy material. The connecting rod 902 can connect multiple sampling mechanisms 5 together, thereby increasing the balance and resistance of the entire device. A sampling cover plate 6, made of alloy material, is provided on the upper surface of each sampling mechanism 5. The sampling cover plate 6 is movable, allowing the top of the sampling mechanism 5 to open or close, ensuring that only large underwater animals cannot enter the interior of the sampling mechanism 5. The sampling cover plate 6 is fixedly connected to the fixed rod 9 via a sampling cover plate moving rod 601, which connects the sampling cover plate 6 and the fixed rod 9. Each sampling mechanism 5 has a sampling net 8 at its bottom, made of soft material, with multiple small through holes.The diameter of the through holes on the sampling net 8 is much smaller than the diameter of the zooplankton, allowing water to pass freely while preventing zooplankton from leaking out of the sampling mechanism 5. Each sampling mechanism 5 is externally equipped with a propeller 701, which drives the sampling mechanism 5 underwater. Each sampling mechanism 5 contains a filter plate 501 with multiple through holes, the diameter of which is much larger than the diameter of the through holes on the sampling net 8, ensuring the smooth passage of zooplankton while preventing underwater debris such as branches from entering the bottom of the sampling mechanism 5. Each filter plate 501 has multiple filter plate retainers 502 on its upper surface, used to lock the filter plate 501, preventing it from detaching from the sampling mechanism 5 due to underwater buoyancy. The lower surface of each filter plate 501 is flush with... The upper surface of the filter plate support plate 504 is tightly fitted, and the filter plate support plate 504 is fixed to the inner surface of the sampling mechanism 5. The filter plate support plate 504 adopts a ring structure and is used to support the filter plate 501. Multiple sampling net holders 503 are provided below each filter plate 501 to fix the sampling net 8. A cable fixing ring 901, made of hard steel, is fixed to the top of the fixing rod 9. The cable fixing ring 901 is used to connect the cable 203, thereby connecting the sampling mechanism 5 to the cable 203. An underwater power supply mechanism 905 is fixed to the lower part of the fixing rod 9 to provide power to the underwater equipment. A sampling camera 903 is fixed to the bottom of the underwater power supply mechanism 905 to observe the underwater environment, thereby facilitating sampling work.

[0045] Example 2, based on Example 1, is... Figure 7-11Each sampling mechanism 5 has a screw motor 7 fixed to its outer surface. The screw motor 7 controls the propeller 701. The screw motor 7 is rotatably connected to the propeller 701. The rotation of multiple propellers 701 allows the fixed rod 9 to move horizontally underwater, thereby enabling the entire device to move horizontally underwater. Multiple sampling cover gear fixing plates 622 are fixed to the upper part of the outer surface of each sampling mechanism 5. The sampling cover gear fixing plates 622 are made of lightweight or alloy materials. The sampling cover gear fixing plates 622 are used for... The sampling cover plate motor fixing plate 623 is fixed, and the sampling cover plate gear fixing plate 622 has the sampling cover plate motor fixing plate 623 fixed at its bottom. The sampling cover plate motor fixing plate 623 is made of lightweight material or alloy material. The sampling cover plate motor 624 is fixed to the outside of the sampling cover plate motor fixing plate 623. The sampling cover plate gear 625 is provided inside the sampling cover plate motor fixing plate 623. The sampling cover plate gear 625 is rotatably connected to the sampling cover plate motor 624. The sampling cover plate gear fixing plate 622 has a through hole in the middle. A sampling cover plate fixing bolt 621 is provided in the through hole in the middle of the sampling cover plate gear fixing plate 622. The sampling cover plate fixing bolt 621 is meshed with the sampling cover plate gear 625. A sampling cover plate fixing piece 602 is fixed on the upper surface of the sampling cover plate fixing bolt 621. The lower surface of the sampling cover plate fixing piece 602 is in close contact with the sampling cover plate 6. The sampling cover plate motor 624 drives the sampling cover plate gear 625 to rotate, thereby driving the meshed sampling cover plate fixing bolt 621 to move up and down, thus causing the sampling cover plate fixing piece 602 to move up and down. 02 moves up and down, so that the lower surface of the sampling cover plate fixing piece 602 is tightly attached to the upper surface of the sampling cover plate 6, thereby fixing the sampling cover plate 6. The lower surface of the sampling cover plate 6 is tightly attached to the upper surface of the sampling mechanism 5. The sampling cover plate moving rod 601 is telescopic. The sampling cover plate moving rod 601 can drive the sampling cover plate 6 to move by telescopic movement. A sampling cover plate moving motor 611 is fixed at the upper end of the sampling cover plate moving rod 601. The sampling cover plate moving motor 611 is used to control the sampling cover plate moving rod 601.

[0046] When using this invention, when the sampling mechanism 5 reaches the required height, the controller 3 controls multiple spiral motors 7 to start working together, causing some of the propellers 701 to rotate clockwise and others to rotate counterclockwise, thereby moving the fixing rod 9 and thus moving the first sampling mechanism 5 to the required position for convenient sampling. At this time, the controller 3 controls the speed of the spiral motors 7, thereby controlling the rotation speed of the propellers 701, thus balancing the tension of the cable 203, thereby ensuring the fixing rod 9 is fixed, and thus ensuring the sampling mechanism 5 is fixed. At this time, the controller 3 controls the first set of sampling cover plate motors 624 to start working, thereby causing the first set of sampling cover plate gears 625 to rotate, thereby causing the first set of sampling cover plate fixing bolts 621 to move towards the desired position. The first sampling cover plate 602 moves upward, causing it to move upward and thus preventing it from being tightly fitted with the first sampling mechanism 5. At this time, the controller 3 controls the first sampling cover plate moving motor 611 to start working, causing the first sampling cover plate moving rod 601 to retract, thereby moving the first sampling cover plate 6 and opening the first sampling mechanism 5 for sampling. After sampling is completed, the controller 3 controls the mechanism to work in reverse, thereby closing the first sampling mechanism 5. At this time, the controller 3 controls multiple spiral motors 7 to work together again, causing the fixing rod 9 to reach the second sampling point. Then, the controller 3 starts the above operation again, thus performing a second sampling. After multiple operations, the sampling is finally completed.

[0047] Example 3, based on Example 1, is... Figure 12-19The sampling mechanism 5 includes a rotatable filter plate holder 502. The filter plate holder 502 is fixed to the inner surface of the sampling mechanism 5 via a rotating shaft. Rotation of the filter plate holder 502 fixes the filter plate 501. One end of the filter plate holder 502 is equipped with a filter plate fixing motor 521, which is rotatably connected to the filter plate holder 502. The filter plate fixing motor 521 drives the filter plate holder 502 to rotate, thereby clamping the filter plate 501. Multiple sampling net support rods 802 are fixedly connected to the outside of the sampling net 8. These sampling net support rods 802 have a cubic prism structure and are made of lightweight or alloy materials. The sampling net support rods 802 are used to fix the sampling net 8. A sampling net support plate 801 is fixedly connected to the top of each sampling net support rod 802. The sampling net support plate 801 adopts a cubic ring structure and is made of lightweight or alloy materials. It is used to fix the sampling net support rod 802 and the sampling net 8. The upper surface of the sampling net support plate 801 is tightly fitted to the lower surface of the sampling mechanism 5. A sampling net fixing plate 532 is rotatably connected to the bottom of the sampling net fixer 503 at the bottom of the sampling mechanism 5. The sampling net fixing plate 532 can lock the sampling net support plate 801 by rotation, thus ensuring a tight fit between the sampling net support plate 801 and the sampling mechanism 5. This allows the sampling net 8 to be detached, facilitating sample removal by staff. A sampling net fixing motor 531 is fixed to one end of the sampling net fixer 503, and the sampling net fixing plate 532 is rotatably connected to the sampling net fixing motor 531. The sampling net fixing motor 531 can drive the sampling net fixing plate 532 to rotate.

[0048] Before using this invention, the sampling mechanism 5 controls the sampling cover plate 6 to move, thereby opening the sampling mechanism 5. At this time, the controller 3 controls the filter plate fixing motor 521 to work, thereby driving the filter plate holder 502 to rotate. When the filter plate holder 502 rotates to the vertical position, the operator places the filter plate 501 on top of the filter plate support plate 504. At this time, the controller 3 controls the filter plate fixing motor 521 to rotate in the opposite direction, thereby causing the filter plate holder 502 to rotate in the opposite direction. When the filter plate holder 502 rotates to a horizontal position, the controller 3 controls the filter plate fixing motor 521 to stop working. Simultaneously, the controller 3 controls the sampling net fixing motor 531 to start rotating. When the sampling net fixing motor 531 rotates to a vertical position, the operator aligns the sampling net support plate 801 with the bottom surface of the sampling mechanism 5. At this time, the controller 3 controls the sampling net fixing motor 531 to rotate in the opposite direction, thereby causing the sampling net fixing plate 532 to rotate in the opposite direction. When the sampling net fixing plate 532 rotates to a horizontal position... When the sampling net fixing motor 531 stops working, the controller 3 locks the sampling net support plate 801, thus fixing the sampling net 8. When the upper surface of the sampling mechanism 5 is exposed to seawater, the controller 3 controls the fixing rod 9 to move upward, thus moving the sampling mechanism 5 upward, allowing zooplankton and seawater to enter the sampling mechanism 5. At this time, the seawater and zooplankton reach the lower part of the filter plate 501, while the filter plate 501 can block larger impurities from entering the sampling mechanism. At the lower part of the sampling mechanism 5, the zooplankton and seawater continue to fall due to the upward movement of the sampling mechanism 5, thus reaching the sampling net 8. At this time, the seawater continues to fall through the through holes on the sampling net 8, but the zooplankton, due to their large size, cannot pass through the through holes on the sampling net 8, thus keeping the zooplankton inside the sampling net 8. At this time, the sampling mechanism 5 controls the O6 to move in the opposite direction, thereby closing the upper surface of the sampling mechanism 5, so that the zooplankton will not flow out from the top of the sampling mechanism 5, thus ensuring the integrity of the sample.

[0049] Example 4, based on Example 1, is... Figure 1-6As shown, a cable buckle 204 is fixedly connected inside the cable fixing ring 901. The cable buckle 204 has a ring structure and is made of hard steel. The cable buckle 204 is used to connect the cable fixing ring 901 and the cable 203. The cable 203 is fixedly connected to the top of the cable buckle 204. The cable 203 is made of multiple thin steel wires and is wound inside the cable reel 201. A cable reel motor 202 is fixed outside the cable reel fixing frame 2. The cable reel motor 202 is rotatably connected to the cable reel 201 through a rotating shaft. The cable reel motor 202 can control the rotation of the cable reel 201, thereby driving the cable 203 to rotate around the cable reel 201, thereby causing the cable buckle 204 to move up and down, thus causing the cable fixing ring 901 to... The fixed rod 9 moves up and down, thereby causing the sampling mechanism 5 to move up and down. A pulley 403 is provided between the cable 203 and the cable buckle 204. The pulley 403 is fixed to the upper surface of the rotating rod 401 by a fixed plate. The pulley 403 can rotate, and the cable 203 can move along the groove inside the pulley 403, thereby fixing the cable 203. A rotating rod rotation motor 402 is fixed to one end of the rotating rod fixing plate 4. The rotating rod rotation motor 402 is rotatably connected to the rotating rod 401 through a rotating shaft. The rotating rod rotation motor 402 drives the rotating rod 401 to rotate, which allows the pulley 403 to rotate around the two rotating rod fixing plates 4, thereby making it convenient for the staff to disassemble the sampling mechanism 5 when the sampling mechanism 5 reaches the water surface.

[0050] Before using this invention, after the worker has installed the support rod 101, the worker fixes the cable buckle 204 to the cable fixing ring 901. At this time, the worker places the cable 203 in the middle of the pulley 403. The controller 3 then controls the rotating rod motor 402 to operate, causing the rotating rod 401 to rotate. This causes the fixing rod 9 to move away from the support plate 1, thus moving the sampling mechanism 5 away from the support plate 1, preventing the sampling mechanism 5 from colliding with the support plate 1. At this time, the controller 3 controls the cable reel motor 202 to start operating, causing the cable reel 201 to rotate, thereby... The cable 203 rotates around the cable reel 201, causing the fixed rod 9 to descend, thus allowing the sampling mechanism 5 to enter the water. When the sampling mechanism 5 reaches the required height, the controller 3 controls the cable reel motor 202 to stop working, so that the cable 203 no longer rotates. When the sampling mechanism 5 moves horizontally, the controller 3 controls the cable reel motor 202 to work according to the speed ratio with the spiral motor 7, thereby ensuring that the fixed rod 9 does not descend while moving horizontally. After sampling is completed, the controller 3 controls the cable reel motor 202 to work in reverse, thereby pulling the sampling mechanism 5 to the surface.

[0051] The workflow of this invention is as follows: Before using this invention, the sampling mechanism 5 controls the sampling cover plate 6 to move, thereby opening the sampling mechanism 5. At this time, the controller 3 controls the filter plate fixing motor 521 to work, thereby driving the filter plate holder 502 to rotate. When the filter plate holder 502 rotates to the vertical position, the operator places the filter plate 501 on top of the filter plate support plate 504. At this time, the controller 3 controls the filter plate fixing motor 521 to rotate in the opposite direction, thereby causing the filter plate holder 502 to rotate in the opposite direction. When the filter plate holder 502 rotates to the horizontal position, the controller 3 controls the filter plate fixing motor 521 to stop working. At the same time, the controller... 3. Control the sampling net fixing motor 531 to start rotating. When the sampling net fixing motor 531 rotates to a vertical position, the worker aligns the sampling net support plate 801 with the bottom surface of the sampling mechanism 5. At this time, the controller 3 controls the sampling net fixing motor 531 to rotate in the opposite direction, thereby causing the sampling net fixing plate 532 to rotate in the opposite direction. When the sampling net fixing plate 532 rotates to a horizontal position, the controller 3 controls the sampling net fixing motor 531 to stop working, thereby locking the sampling net support plate 801 and fixing the sampling net 8. After the worker has installed the support rod 101, the worker fixes the cable buckle 204 to the cable fixing ring 901. At this time, the work... Personnel place the cable 203 in the middle of the pulley 403. At this time, the controller 3 controls the rotating rod motor 402 to operate, causing the rotating rod 401 to rotate. This moves the fixed rod 9 away from the support plate 1, thus moving the sampling mechanism 5 away from the support plate 1, preventing the sampling mechanism 5 from colliding with the support plate 1. Then, the controller 3 controls the cable reel motor 202 to start operating, causing the cable reel 201 to rotate. This causes the cable 203 to rotate around the cable reel 201, causing the fixed rod 9 to descend, allowing the sampling mechanism 5 to enter the water. When the sampling mechanism 5 reaches the required height, the controller 3 controls multiple... The spiral motor 7 begins to work, causing some of the propellers 701 to rotate clockwise and others counterclockwise. This moves the fixing rod 9, allowing the first sampling mechanism 5 to move to the desired position for convenient sampling. At this time, the controller 3 stops the cable reel motor 202, preventing the cable 203 from rotating. When the sampling mechanism 5 moves horizontally, the controller 3 controls the cable reel motor 202 and the spiral motor 7 to operate at a specific speed ratio, controlling the rotation speed of the propellers 701 and balancing the tension of the cable 203. This ensures the fixing rod 9 is fixed, and consequently, the sampling mechanism 5 is fixed.At this time, the controller 3 controls the first set of sampling cover plate motors 624 to start working, thereby causing the first set of sampling cover plate gears 625 to rotate, thereby causing the first set of sampling cover plate fixing bolts 621 to move upward, thereby causing the first set of sampling cover plate fixing pieces 602 to move upward, thus preventing the first sampling cover plate 6 from being tightly fitted with the first sampling mechanism 5. At this time, the controller 3 controls the first sampling cover plate moving motor 611 to start working, thereby causing the first sampling cover plate moving rod 601 to retract, thereby causing the first sampling cover plate 6 to move, thus opening the first sampling mechanism 5. When the upper surface of the sampling mechanism 5 is exposed to seawater, the controller 3 controls the fixing rod 9 to move upward, thereby moving the sampling mechanism 5 upward, allowing zooplankton and seawater to enter the interior of the sampling mechanism 5. At this time, the seawater and zooplankton reach the lower part of the filter plate 501, while the filter plate 501 can block larger impurities from entering the lower part of the sampling mechanism 5. As the seawater rises and falls due to the sampling mechanism 5, it reaches the sampling net 8. The seawater continues to fall through the holes in the sampling net 8, but the zooplankton, due to their large size, cannot pass through these holes, thus remaining inside the net. The sampling mechanism 5 then controls the 06 to move in the opposite direction, closing the upper surface of the sampling mechanism 5 and preventing the zooplankton from flowing out, ensuring the integrity of the sample. After sampling, the controller 3 controls the mechanism to work in the opposite direction, closing the first sampling mechanism 5. The controller 3 then controls multiple spiral motors 7 to work together again, causing the fixed rod 9 to reach the second sampling point. The controller 3 then restarts the above process for a second sampling. After multiple operations, the sampling is completed. Once sampling is finished, the controller 3 controls the cable reel motor 202 to work in the opposite direction, pulling the sampling mechanism 5 to the surface.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for monitoring underwater zooplankton, characterized in that: The system includes a support plate (1), a support rod (101) fixed to the bottom of the support plate (1), two cable reel fixing frames (2) fixed to the upper surface of the support plate (1), a cable reel (201) between the two cable reel fixing frames (2), a controller (3) fixed to the left side of the cable reel fixing frame (2), two rotating rod fixing plates (4) fixed to the left side of the controller (3), a rotating rod (401) between the two rotating rod fixing plates (4), a fixing rod (9) below the rotating rod (401), and multiple sampling mechanism fixing rods (904) on the outside of the fixing rods (9). A sampling mechanism (5) is fixed to the end of each sampling mechanism fixing rod (904). Every two sampling mechanisms (5) The sampling mechanisms (5) are fixedly connected by a sampling mechanism connecting rod (902). The upper surface of the sampling mechanism (5) is provided with a sampling cover plate (6). The sampling cover plate (6) is fixedly connected to the fixed rod (9) through a sampling cover plate moving rod (601). Each sampling mechanism (5) is provided with a sampling net (8) at the bottom. Each sampling mechanism (5) is provided with a propeller (701) on the outside. Each sampling mechanism (5) is provided with a filter plate (501) inside. Each filter plate (501) is provided with multiple filter plate holders (502) on the upper surface. The lower surface of each filter plate (501) is tightly attached to the upper surface of the filter plate support plate (504). Each filter plate (501) is provided with multiple sampling net holders (503) below it. Each of the sampling mechanisms (5) has a spiral motor (7) fixed on its outer surface, and the spiral motor (7) is rotatably connected to the propeller (701); The upper part of the outer surface of the sampling mechanism (5) is fixed with multiple sampling cover plate gear fixing plates (622), the bottom of the sampling cover plate gear fixing plate (622) is fixed with a sampling cover plate motor fixing plate (623), the outside of the sampling cover plate motor fixing plate (623) is fixed with a sampling cover plate motor (624), and the sampling cover plate gear (625) is provided inside the sampling cover plate motor fixing plate (623). The sampling cover plate gear (625) rotates with the sampling cover plate motor (624). The sampling cover plate gear fixing plate (622) is provided with a through hole in the middle, and a sampling cover plate fixing bolt (621) is provided in the through hole in the middle of the sampling cover plate gear fixing plate (622). The sampling cover plate fixing bolt (621) is meshed with the sampling cover plate gear (625). A sampling cover plate fixing piece (602) is fixed on the upper surface of the sampling cover plate fixing bolt (621). The lower surface of the sampling cover plate fixing piece (602) is tightly fitted with the sampling cover plate (6). The lower surface of the sampling cover (6) is in close contact with the upper surface of the sampling mechanism (5). The sampling cover moving rod (601) is telescopic. The upper end of the sampling cover moving rod (601) is fixed with a sampling cover moving motor (611). The filter plate holder (502) inside the sampling mechanism (5) is rotatable. The filter plate holder (502) is fixed to the inner surface of the sampling mechanism (5) by a rotating shaft. A filter plate fixing motor (521) is provided at one end of the filter plate holder (502). The filter plate holder (502) is rotatably connected to the filter plate fixing motor (521).

2. The sampling device for underwater zooplankton monitoring according to claim 1, characterized in that: The top of the fixed rod (9) is fixed with a cable fixing ring (901), the bottom of the fixed rod (9) is fixed with an underwater power supply mechanism (905), and the bottom of the underwater power supply mechanism (905) is fixed with a sampling camera (903).

3. A sampling device for monitoring underwater zooplankton according to claim 2, characterized in that: The sampling net (8) is externally fixedly connected to multiple sampling net support rods (802), and the top of the sampling net support rods (802) is fixedly connected to a sampling net support plate (801). The upper surface of the sampling net support plate (801) is closely attached to the lower surface of the sampling mechanism (5).

4. A sampling device for monitoring underwater zooplankton according to claim 3, characterized in that: The bottom of the sampling net holder (503) at the bottom of the sampling mechanism (5) is rotatably connected to a sampling net fixing plate (532). A sampling net fixing motor (531) is fixed at one end of the sampling net holder (503), and the sampling net fixing plate (532) is rotatably connected to the sampling net fixing motor (531).

5. A sampling device for monitoring underwater zooplankton according to claim 4, characterized in that: A cable buckle (204) is fixedly connected inside the cable fixing ring (901), and a cable (203) is fixedly connected to the top of the cable buckle (204). The cable (203) is wound inside the cable reel (201). A cable reel motor (202) is fixed outside the cable reel fixing frame (2). The cable reel motor (202) is rotatably connected to the cable reel (201) through a rotating shaft.

6. A sampling device for monitoring underwater zooplankton according to claim 5, characterized in that: A pulley (403) is provided between the cable (203) and the cable buckle (204). The pulley (403) is fixed to the upper surface of the rotating rod (401) by a fixing plate. The pulley (403) can rotate. A rotating rod rotating motor (402) is fixed to one end of the rotating rod fixing plate (4). The rotating rod rotating motor (402) is rotatably connected to the rotating rod (401) through a rotating shaft.

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