An assembled force-measurable clamping groove type fence applied to seabed culture

Abstract

The present application relates to the technical field of fence culture, assembly type design and clamping groove type netting, and particularly relates to an assembly type force-measurable clamping groove type fence applied to seabed culture. The present application adopts a modular assembly body composed of single-piece fence pole netting splicing and assembly, and compared with the whole netting fence, the single-piece netting is greatly reduced in size and weight. In addition, the netting with fence pole solves the problem of netting redundancy and mutual entanglement, and is fastened through the netting clamping groove, and has the characteristics of not directly contacting the pile column, thereby solving the problem of netting damage caused by contact friction between the netting and the pile column. The present application proposes an innovative fixing device, which can realize quick replacement of single-piece netting, facilitate later maintenance, and effectively solve the problem of great difficulty in whole netting installation. The motor has a fixing locking function to ensure that the netting is always in a tensioned state, and can adjust the lifting of the netting to prevent and solve the problem of sinking and loosening of the netting module.

Description

A prefabricated force-measuring slotted fence for use in seabed aquaculture Technical Field

[0001] This invention relates to the fields of fencing aquaculture, prefabricated design, and slotted mesh technology, and in particular to a prefabricated force-measuring slotted fence for use in seabed aquaculture. Background Technology

[0002] Current deep-sea aquaculture methods include shore-connected enclosures, large-span double-circle enclosures, and steel pipe pile ecological enclosures. These methods utilize marine life as aquaculture targets, effectively leveraging marine resources and meeting consumer demand for seafood. They also promote local economic development and can drive the growth of related industries. Marine aquaculture reduces the pressure of fishing on wild fish and other marine life, contributing to the protection of the balance and diversity of marine ecosystems. Through aquaculture, consumer demand for seafood can be met, reducing reliance on wild resources.

[0003] Currently, deep-sea cage aquaculture is labor-intensive, relying heavily on manual observation and operation with insufficient automation and low labor efficiency. Furthermore, the installation of deep-sea cages and the simple replacement of netting still depend on manual labor or crane vessels to pull them out, resulting in high labor intensity and reduced aquaculture efficiency.

[0004] Large-scale deep-sea pipe pile enclosures are a typical type of deep-sea aquaculture facility. The main structure generally consists of a pile system and a netting system. The netting is attached to the piles and integrated with the seabed, creating an area suitable for the cultivation and harvesting of fish and other aquatic products. CN114766404A discloses a pipe pile enclosure structure for deep-sea aquaculture. This large enclosure typically consists of two rings of steel pipe piles, one inner and one outer. After the steel pipe piles are connected and constructed, a netting is installed on the piles to complete the enclosure. Equipment that combines fish fry transfer and release with harvesting functions consists of a crane mounted on the enclosure control platform and a large landing net. This equipment is designed with a pull net to gather fish schools. By pulling the net, the fish can be driven and gathered within a certain area, thus achieving fish harvesting within the enclosed water body.

[0005] Currently, the connection between the seine netting and the posts is secured by direct binding, requiring workers to manually tie each steel cable of the netting to the posts underwater, resulting in low efficiency. Due to the difficulty of underwater binding, the netting may not fit snugly against the posts or the seabed, allowing fish to escape. Furthermore, since the seine netting is usually made of a single piece, any damage or holes require repair or replacement of the entire netting, which is not only inefficient but also poses safety hazards.

[0006] Therefore, the current deep-sea aquaculture model has the following problems:

[0007] 1. Difficult to transport: Currently, each part of the net cage is very large, which occupies a certain amount of transportation resources;

[0008] 2. The installation process is complex and the construction is difficult;

[0009] 3. The mesh is not easy to replace. When the mesh is damaged, a lot of manpower is needed to replace it.

[0010] 4. Poor adhesion between the netting and the structure, and between the netting and the seabed, can lead to the loss of fish.

[0011] 5. The inability to monitor the stress on the netting in real time means that preventative measures cannot be taken before the netting breaks due to excessive stress, resulting in a large loss of fish.

[0012] 6. The research and development of small-scale system fence structures is still in its initial stage, and systematic and serialized products have not yet been formed. Summary of the Invention

[0013] Based on this, and to address the aforementioned shortcomings, a prefabricated, force-measuring slotted fence for use in seabed aquaculture is provided to solve problems such as difficulty in transportation, difficulty in replacing the netting, poor adhesion between the netting and the structure and between the netting and the seabed, and inability to monitor the netting's stress in real time.

[0014] The technical solution of this invention:

[0015] A prefabricated force-measuring slotted fence for use in seabed aquaculture includes posts, netting slots installed at mooring points, bottom slots, pedestrian crossings, and netting rotating rods, wherein the netting rotating rods are composed of flexible rods and fishing nets.

[0016] The piles are arranged longitudinally, and the bottom slots are distributed laterally. The two are connected to form a fence frame. The two ends of the high-strength flexible rope pass through the two slot holes of the netting slot and are connected to the fixed support on the pile. The four screws on the fixed support can fasten the high-strength flexible rope. The netting slot is fixed to the pile, and the two ends of the netting are fixed to the flexible rope. Motor A can drive the netting rotating rod to rotate. The flexible rope rises and falls under the action of motor A, thereby causing the netting to rise or fall.

[0017] The internal sensor b, attached to the clamp in this project, is a flexible capacitive sensor. These sensors are made using a flexible dielectric and electrode structure, detecting pressure on an object's surface by measuring changes in capacitance. They offer high resolution and accuracy and can adapt to objects of various shapes and sizes. Internal sensor b is located within the mesh clip slots, between two clip holes. When the mesh is subjected to force, the high-strength flexible rope compresses internal sensor b, activating it.

[0018] A rotating support frame is erected on the pile, and another rotating support frame is erected on the adjacent pile. The mesh rotating rod is placed horizontally on the two rotating support frames. Motor A is installed on the top of the pile. The mesh rotating rod is connected to motor A. When motor A works, it drives the mesh rotating rod to rotate on the rotating support frame, thus controlling the raising and lowering of the mesh.

[0019] Pedestrian crossings are built between the piles, allowing workers to pass between them to inspect and replace the mesh.

[0020] A fixed support is fixed on the pile column, and a mesh card slot is installed next to the pile column. The mesh card slot is fixed by the fixed support. Specifically, the bolt group on the fixed support is unscrewed, and two high-strength flexible ropes enter through hole A on the fixed support, pass through hole B where the mesh card slot contacts the fixed support, and exit through hole B below the entry hole into the fixed support. They then exit through hole A on the fixed support. The bolt group is tightened, and the excess rope is fixed to the fixed component to complete the mesh card slot fixing.

[0021] The thicker flexible ropes on both sides of the netting descend with the netting when motor A is working. The flexible ropes enter the netting slots from above, and the netting is fixed to the netting slots by the flexible ropes. The netting is installed on each side of the frame with the help of the netting slots. The angle between two adjacent netting slots on the same pile is 90°.

[0022] An embedded component is installed at the bottom of the mesh garment. After the mesh garment falls to the bottom of the mesh box by the operation of motor A, the embedded component enters the bottom slot vertically. The rotating shaft rotates inward to make the card vertical and slide into the bottom of the slot. Then, under the action of motor B, the rotating shaft rotates outward, and the card changes from a vertical state to an open state, so that the embedded component is firmly connected to the bottom slot.

[0023] The embedded component includes a frame, a rotating shaft, cards, and gripping rods. The frame is cubic in shape, hollow inside with only top and bottom surfaces and one side surface. The gripping rods and rotating shafts are riveted to the bottom frame, with the gripping rods riveted to the top of the bottom frame. The rotating shafts are mounted on the horizontal central axis of the cube and pass through the cards sequentially. The advantage of this design is that when the netting is lowered to the bottom slot, the rotating shaft rotates inward, turning the cards vertical and allowing them to slide into the bottom slot. Then, the rotating shaft rotates outward, turning the cards from vertical to open, thus securing the embedded component to the bottom slot. This significantly reduces the installation risks and difficulties during manual installation in deep-sea environments. Internal sensors can monitor the force on the bottom edge of the netting in real time and provide feedback to the terminal, which then adjusts the raising and lowering of the netting rotating rods based on the force.

[0024] The diameter of the flexible rope is greater than the width of the indentation on the surface of the mesh card slot.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] This invention utilizes a post-type fencing structure, which simplifies the installation and construction of the posts. It employs a modular assembly composed of individual pieces of mesh fabric pieced together from poles, significantly reducing the size and weight compared to a monolithic mesh fencing system. Furthermore, the presence of poles eliminates the problem of tangled mesh fabric and allows for secure fastening via mesh slots, preventing direct contact with the posts and thus eliminating mesh damage caused by friction between the mesh and the posts.

[0027] Furthermore, this invention proposes an innovative fixing device that enables quick replacement of individual netting sections, facilitating later maintenance and effectively solving the problem of difficult overall netting installation. The motor has a locking function to ensure the netting is always taut, and can also be lifted and adjusted to prevent and solve the problem of netting modules sinking and loosening. In summary, the fence structure of this invention solves the problems of high cost, difficult installation, easy damage and difficulty in replacing netting, and poor netting fit in current offshore aquaculture models. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the overall structure of the pile-net separated fence for seabed aquaculture.

[0029] Figure 2 is an enlarged view of section 1a in Figure 1;

[0030] Figure 3 is an enlarged view of the fixed support;

[0031] Figure 4 is an enlarged view of the mesh card slot;

[0032] Figure 5 is a schematic diagram of the embedded component.

[0033] In the diagram: 1. Rotating rod support, 2. Netting, 3. Netting rotating rod, 4. Pedestrian crossing, 7. Netting slot, 8. Slot hole, 9. High-strength flexible rope, 10. Fixed support, 11. Motor A, 12. Fixed component, 13. Hole A, 14. Bolt group, 15. Hole B, 16. Card, 17. Rotating shaft, 18. Grab rod, 19. Frame, 20. Bottom slot, 21. Motor B, 22. Internal sensor a, 23. Internal sensor b, a1 flexible rope. Detailed Implementation

[0034] The following describes specific embodiments of the solution in conjunction with the accompanying drawings.

[0035] Example 1:

[0036] A prefabricated force-measuring slotted fence for use in seabed aquaculture includes piles, netting slots 7 installed at mooring points, bottom slots 20, pedestrian crossings 4, and netting rotating rods 3, wherein the netting rotating rods 3 are composed of flexible rods and fishing nets.

[0037] The piles are arranged longitudinally, and the bottom slots 20 are distributed laterally. The two are connected to form a fence frame. The two ends of the high-strength flexible rope 9 pass through the two slot holes 8 of the net 2 slot and are connected to the fixed support on the pile. The four screws on the fixed support can fasten the high-strength flexible rope 9. The net 2 slot is fixed to the pile. The two ends of the net are fixed to the flexible rope a1. The motor A11 can drive the net rotating rod to rotate. The flexible rope a1 rises and falls under the action of the motor A11, thereby making the net rise or fall.

[0038] The internal sensor b23 attached to the clamp in this project is a Flexible Capacitive Sensor. This type of sensor is made using a flexible dielectric and electrode structure, detecting pressure on an object's surface by measuring changes in capacitance. They offer high resolution and accuracy and can adapt to objects of various shapes and sizes. The internal sensor b23 is located within the mesh clasp 7, between two slot holes 8. When the mesh 2 is subjected to force, the high-strength flexible rope 9 compresses the internal sensor b23, causing it to activate.

[0039] A rotating support 1 is erected on the pile column, and a rotating support 1 is erected on an adjacent pile column. A mesh rotating rod 3 is placed horizontally on the two rotating support 1s. A motor A11 is installed on the top of the pile column. The mesh rotating rod 3 is connected to the motor A11. When the motor A11 works, it drives the mesh rotating rod 3 to rotate on the rotating support 1, thereby controlling the raising and lowering of the mesh 2.

[0040] Pedestrian crossings 4 are built between the piles, and workers use pedestrian crossings 4 to pass between the piles to inspect and replace the netting 2.

[0041] A fixed support 10 is fixed on the pile column, and a mesh card slot 7 is installed next to the pile column. The mesh card slot 7 is fixed by the fixed support 10. Specifically, the bolt group 14 on the fixed support is unscrewed, and two high-strength flexible ropes 9 enter through the hole A13 on the fixed support, pass through the mesh card slot 7 and the contact hole B15 with the fixed support 10, pass out of the mesh card slot through the hole B15 below the entry hole, enter the fixed support, and pass out through the hole A13 on the fixed support. The bolt group 14 is tightened, and the excess rope is fixed to the fixed component 12 to complete the fixing of the mesh card slot 7.

[0042] The flexible ropes a1, which are thicker on both sides of the netting 2, descend together with the netting 2 when the motor A11 is working. The flexible ropes a1 enter the netting slot 7 from above, and the netting 2 is fixed to the netting slot by the flexible ropes a1. The netting slot is installed on each side of the frame with the help of the netting slot. The included angle between two adjacent netting slots on the same pile is 90°.

[0043] An embedded component is installed at the bottom of the mesh garment 2. After the mesh garment 2 falls to the bottom of the mesh box by the operation of the motor A11, the embedded component enters the bottom slot 20 vertically. The rotating shaft 17 rotates inward to make the card 16 vertical and slide into the bottom of the slot. Then, under the action of the motor B21, the rotating shaft 17 rotates outward, and the card 16 changes from a vertical state to an open state, so that the embedded component is firmly connected to the bottom slot 20.

[0044] The embedded component includes a frame 19, a rotating shaft 17, a card 16, and a gripping rod 18. The frame 19 is generally cubic in shape, hollow inside, with only a top and bottom surface and one side surface. The gripping rod 18 and the rotating shaft 17 are sequentially fixed to the bottom frame 19 by riveting, with the gripping rod 18 riveted to the top of the bottom frame 19. The rotating shaft 17 is mounted on the horizontal central axis of the cube and passes through the card 16. The advantage of this design is that when the netting 2 is lowered to the bottom slot 20, the rotating shaft 17 rotates inward, making the card 16 vertical and allowing it to slide into the bottom of the bottom slot 20. Then, the rotating shaft 17 rotates outward, and the card 16 changes from a vertical state to an open state, thus firmly connecting the embedded component to the bottom slot 20. This greatly reduces the installation risk and difficulty during manual installation in deep-sea areas. Internal sensors can monitor the force on the bottom edge of the netting in real time and feed it back to the terminal, which adjusts the raising and lowering of the netting rotating rod according to the force.

[0045] Example 2:

[0046] A prefabricated force-measuring slotted fence for use in seabed aquaculture, comprising a closing component and a tensioning component;

[0047] Enclosure component: Its function is to cover the fence structure. The enclosure component includes several mesh panels, mesh panel slots 7, and embedded components.

[0048] The aforementioned pile-net separated fence structure effectively solves the problems of high cost, difficult construction during installation, easy damage and difficulty in replacing the netting, and poor netting fit in the current offshore aquaculture model.

[0049] In one embodiment, it has a quadrilateral structure and four piles and four bottom slots; wherein the piles are arranged in a quadrilateral structure.

[0050] In one embodiment, each post is fixed with a motor, and each motor is connected to the mesh rotating rod.

[0051] In one example, a flexible rope is wrapped around each side of the netting, and the ropes are secured together with the netting to the netting pole.

[0052] In one example, the upper end of the flexible rope is fixed to the mesh rotating pole.

[0053] In one example, the diameter of the rope is greater than the width of the indentation on the surface of the mesh card slot.

[0054] In one example, each pile was welded with a fixed support.

[0055] In one example, a concave groove is welded between the bottom piles of the cage, and a sensor is inside it.

[0056] This example uses fixed support 10 and embedded components as examples. The pile is a cylindrical structure. Three pairs of fixed supports are welded on the outer surface of each pile. The three pairs of supports are evenly distributed in the upper, middle and lower parts of the pile, and the included angle of each pair of supports is 90°. Each support in the pile corresponds to the other.

[0057] Tensioning assembly: Its function is to stretch and adjust the perimeter of the fence. This refers to motor A11, which is installed and fixed to the top of the posts.

[0058] In this example, the motor A11 fixed at the top of each post is connected to the netting rotating rod 3. Working together, the motor A11 rotates the netting rotating rod 3, which in turn raises and lowers the flexible rope a1, ensuring the netting remains vertical and guaranteeing the stability of the overall structure. Furthermore, the tightness of the netting 2 can be adjusted, effectively preventing fish from escaping from the enclosure structure.

[0059] Enclosure component: Its function is to cover the fence structure. The enclosure component includes several metal mesh panels, mesh slots, and bottom slots.

[0060] In this example, the netting slot 7 is a cube with a groove on one side surface and a longitudinal groove inside. The groove is connected to the inner groove, and the groove can pass through the fishing net longitudinally. The groove can accommodate the flexible rope a1 for fixing the fishing net. When the motor A11 is working, the netting 2 and the flexible rope a1 descend together. The flexible rope a1 enters the groove from the top, the netting 2 passes through the groove, and the flexible rope a1 is horizontally fixed inside the groove. The netting 2 is horizontally fixed on the netting slot 7.

[0061] In this example, after the netting 2 descends to the bottom, the rotating shaft 17 rotates inward to make the card 16 vertical, thus sliding it into the bottom of the slot. Then, under the action of the motor B21, the rotating shaft rotates outward, and the card 16 changes from a vertical state to an open state, thereby making the embedded component firmly connected to the bottom slot 20. This greatly reduces the installation risk and difficulty during manual installation in deep-sea areas. The internal sensor a22 can monitor the force on the bottom edge of the netting in real time and feed it back to the terminal, which adjusts the raising and lowering of the netting 2 according to the force.

[0062] In this example, when a single piece of netting 2 is damaged, the pivot 17 in the bottom frame rotates, and the card 16 changes from an open state to a vertical state, loosening the connection between the embedded component and the bottom slot 20. The motor A11 at the top of the pile drives the netting rotating rod 3 to rotate, and the netting 2 moves upward with the movement of the flexible rope a1. After reaching the top, the netting is repaired or replaced, and the motor A11 drives the netting rotating rod 3 to rotate. The netting rotating rod 3 drives the flexible rope a1 to descend. After the netting 2 descends to the bottom, the pivot rotates inward, and the card 16 becomes vertical, thus sliding into the bottom of the bottom slot 20. Then, under the action of the motor B21, the pivot rotates outward, and the card 16 changes from a vertical state to an open state, thereby making the embedded component firmly connected to the bottom slot 20, completing the netting replacement.

[0063] In this embodiment, the netting 2 is designed as a single piece. Compared to an integral fence structure, a single-piece netting is more convenient to manufacture, has a wider range of applications, and is significantly smaller and lighter in weight. The netting with a pole structure solves the problem of the netting becoming tangled and complex, and is less susceptible to damage from waves, offering advantages such as even stress distribution and resistance to breakage. The netting is secured with fixing slots, preventing direct contact with the posts and thus eliminating the problem of netting damage caused by friction between the netting and the posts. Furthermore, the netting is quick to install, easy to construct, and can be easily and quickly replaced, facilitating future maintenance and effectively solving the problem of the difficulty in installing an integral netting structure.

[0064] In addition, the bottom groove in this example is buried underground, which fundamentally solves the problem of fish escaping.

[0065] In summary, the fence structure of this embodiment solves the current problems of high labor consumption, low automation, low labor efficiency, poor adhesion between the netting and the structure and between the netting and the seabed, which leads to the loss of fish, uneven stress on the netting under the scouring of ocean currents, resulting in damage to the netting, and difficulty in replacing the netting.

[0066] The naming of the various components involved in this design is based on the described function, and is not limited to the specific terms used in this invention. Those skilled in the art may also choose other terms to describe the names of the various components of this invention.

Claims

1. A prefabricated force-measuring slotted fence for use in seabed aquaculture, characterized in that, The system includes piles, netting slots (7) installed at the binding points, bottom slots (20), pedestrian crossings (4), and netting rotating poles (3). Pedestrian crossings (4) are built between the piles, allowing workers to pass between them. Fixed supports (10) are fixed on the piles, and netting slots (7) are installed next to the piles. The netting slots (7) are fixed by the fixed supports (10). Two high-strength flexible ropes (9) enter through holes A (13) on the fixed supports, pass through the netting slots (7) and contact holes B (15) with the fixed supports (10), exit through the netting slots through holes B (15) below the entry holes, enter the fixed supports, and exit through holes A (13) on the fixed supports. Tighten the bolt group (14) to fix the excess rope to the fixed component (12) to complete the fixing of the netting slot (7); the piles are arranged longitudinally and the bottom slots (20) are distributed laterally, and the two are connected to form a fence frame; the two ends of the high-strength flexible rope (9) pass through the two slot holes (8) of the netting slot (7) and are connected to the fixed support on the pile. The four screws on the fixed support can tighten the high-strength flexible rope (9). The netting slot (7) is fixed on the pile. The two ends of the netting (2) are fixed on the flexible rope (a1). The motor A (11) can drive the netting rotating rod to rotate. The flexible rope (a1) rises and falls under the action of the motor A (11), so that the netting rises or falls; internal sensing Device b (23) is located in the mesh card slot (7) between two card slot holes (8). If the mesh (2) is under force, the high-strength flexible rope (9) will compress the internal sensor b (23), causing the internal sensor b (23) to work. A rotating rod support (1) is built on the pile column. A rotating rod support (1) is built on an adjacent pile column. The mesh rotating rod (3) is placed horizontally on the two rotating rod supports (1). A motor A (11) is installed on the top of the pile column. The mesh rotating rod (3) is connected to the motor A (11). When the motor A (11) works, it drives the mesh rotating rod (3) to rotate on the rotating rod support (1), controlling the lifting and lowering of the mesh (2). The thicker flexible ropes (a1) on both sides of the mesh (2) move with the mesh when the motor A (11) works. The garment (2) descends together, and the flexible rope (a1) enters the inside of the mesh garment slot (7) from above. The mesh garment (2) is fixed to the mesh garment slot (7) by the flexible rope (a1) and installed on each side of the frame with the help of the mesh garment slot (7). An embedded component is installed at the bottom of the mesh garment (2). After the mesh garment (2) falls to the bottom of the net box by the operation of the motor A (11), the embedded component enters the bottom slot (20) vertically. The rotating shaft (17) rotates inward and the card (16) becomes vertical and slides into the bottom of the slot. Then, under the action of the motor B (21), the rotating shaft (17) rotates outward and the card (16) changes from a vertical state to an open state, so that the embedded component is firmly connected to the bottom slot (20).The embedded component includes a frame (19), a pivot (17), a card (16), and a gripper (18). The frame (19) is generally cubic in shape, hollow inside, with only a top and bottom surface and a side surface. The gripper (18) and the pivot (17) are sequentially fixed to the bottom frame (19) by riveting. The gripper (18) is riveted to the top of the bottom frame (19), and the pivot (17) is mounted on the horizontal central axis of the cube and passes through the card (16).

2. The prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 1, characterized in that, The piles are cylindrical structures, with three pairs of fixed supports welded to the outer surface of each pile. The three pairs of supports are evenly distributed in the upper, middle and lower parts of the pile, and the included angle of each pair of supports is 90°. Each support corresponds to the other in the pile.

3. The prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 1, characterized in that, The netting slot (7) is a cube with a groove on one side surface and a longitudinal groove inside. The groove is connected to the inner groove. The groove can pass through the fishing net longitudinally, and the groove can accommodate the flexible rope (a1) for fixing the fishing net.

4. The prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 2, characterized in that, The netting slot (7) is a cube with a groove on one side surface and a longitudinal groove inside. The groove is connected to the inner groove. The groove can pass through the fishing net longitudinally, and the groove can accommodate the flexible rope (a1) for fixing the fishing net.

5. A prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 1 or 4, characterized in that, The diameter of the flexible rope (a1) is greater than the width of the groove on the surface of the netting (7).

6. The prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 2, characterized in that, The diameter of the flexible rope (a1) is greater than the width of the groove on the surface of the netting (7).

7. A prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 3, characterized in that, The diameter of the flexible rope (a1) is greater than the width of the groove on the surface of the netting (7).

8. A prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 1, 4, 6, or 7, characterized in that, The internal sensor b (23) is a flexible capacitive sensor, and the net rotating rod (3) is composed of a flexible rod and a fishing net.

9. A prefabricated force-measuring slotted fence for seabed aquaculture as described in claim 2, characterized in that, The internal sensor b (23) is a flexible capacitive sensor, and the net rotating rod (3) is composed of a flexible rod and a fishing net.

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