A sampling device for marine ecological monitoring of reef attachments

Abstract

The application discloses a kind of sampling devices of marine ecological monitoring reef attachment, it is related to sampling device technical field, including unmanned submersible and installation base, further include sampling mechanism;Sampling mechanism includes fixedly connected in the fixed frame of installation base lower end, two pivot shafts are symmetrically rotationally connected in fixed frame inner wall, the end of two pivot shafts mutually close is commonly fixedly connected with brush roll, multiple flexible hollow thin rods are fixedly connected in brush roll side wall, and SMP core rod is fixedly embedded in each flexible hollow thin rod.This application can identify the main biochemical components of attachment in situ, quickly and non-destructively before sampling by using near-infrared spectroscopy sensor, when facing different samples, automatically adjust the rigidity and rotating speed of flexible hollow thin rods, provide different collection strength, protect the integrity of sample cell structure to the greatest extent, while ensuring effective peeling, realize the optimization and differentiation of different types of attachment collection.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, and in particular to a sampling device for marine ecological monitoring of reef attachments. Background Technology

[0002] In marine ecological monitoring, sampling and analysis of biological communities attached to the reef surface is a key means of assessing biodiversity, ecological succession, biofouling, and the health status of the ecosystem.

[0003] In the prior art, Chinese invention patent with authorization announcement number CN118776982B discloses a sampling device for marine ecological monitoring of reef attachments, including a base, a sample storage box fixedly connected to the upper surface of the base, a support frame fixedly connected to one side of the sample storage box, a lifting mechanism installed on the support frame, a sampling box connected to the lifting mechanism, a material conveying mechanism installed on one side of the support frame, an adjustment mechanism connected to one side of the sampling box, wheels fixedly connected to both ends of the lower surface of the base, a connecting seat provided in the middle of the lower surface of the base, and a mud scraping mechanism fixedly connected to both sides of the connecting seat. The sample storage box is equipped with a filter screen, and a drain pipe is connected to the bottom of one side of the sample storage box. Support mechanisms are provided on both sides of the sample storage box, and a push handle is installed on the upper surface of the base. By starting the drive motor, the gear one is driven to rotate. Through the cooperation between gear one and gear two, the sampling roller brush two and the sampling roller brush one can brush off the reef attachments. Through the set suction pump, the scraped attachments can be extracted through the suction rack and then discharged into the sample storage box through the discharge pipe. The filter screen can filter the moisture in the attachments, and the filtered water is discharged through the drain pipe, which is convenient and quick.

[0004] Based on the aforementioned existing technologies, it has been found that the bristles used for collecting attachments have a constant hardness. Due to the complex structure of reef attachment communities, which include everything from soft biofilms and algae to hard calcareous organisms such as barnacles and oysters, ordinary soft bristles cannot effectively remove the hard calcareous organisms, leading to sample omissions. On the other hand, hard bristles can damage soft algae and biological tissues, resulting in sample distortion. Therefore, the bristles lack adaptive adjustment capabilities, which seriously affects the accuracy and integrity of sampling. In addition, during underwater operations, the biological debris generated by brushing is easily dispersed and lost due to water flow disturbance. Existing technologies use simple suction methods and lack effective physical or fluid barriers to constrain the sampling area, causing a large number of samples to escape before entering the collection device, resulting in low sample recovery rates and compromised representativeness. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] A sampling device for marine ecological monitoring of reef attachments includes an unmanned submersible and a mounting base, and also includes a sampling mechanism;

[0007] The sampling mechanism includes a fixed frame fixedly connected to the lower end of the mounting base. Two rotating shafts are symmetrically rotatably connected to the inner wall of the fixed frame. A brush roller is fixedly connected to one end of each rotating shaft that is close to the other. Multiple flexible hollow rods are fixedly connected to the side wall of the brush roller. An SMP core rod is embedded within each flexible hollow rod. A hollow cavity is formed inside the brush roller. Multiple electric heating plates are fixedly connected to the inner wall of the hollow cavity, and the hollow cavity is filled with silicone oil. One end of the SMP core rod extends into the hollow cavity. Multiple semiconductor cooling chips are fixedly embedded at the bottom of the hollow cavity. A waterproof motor is fixedly connected to the lower end of the fixed frame. The output end of the waterproof motor passes through the bottom of the fixed frame and is fixedly connected to the rotating shaft. A near-infrared spectral sensor is fixedly connected to the side wall of the unmanned submersible. The electric heating plates, waterproof motor, semiconductor cooling chips, and near-infrared spectral sensor are connected via a PLC control circuit.

[0008] Preferably, the mounting base is fixedly connected to the unmanned submersible by multiple sets of bolts.

[0009] Preferably, the side wall of the SMP core rod located inside the flexible hollow thin rod is covered with a flexible heat insulation sleeve, and the brush roller has an annular cavity that surrounds the hollow cavity.

[0010] Preferably, the sampling mechanism further includes a collection cover fixedly connected to the lower end of the mounting base via a bracket. The opening end of the collection cover extends into the fixed frame, and both rotating shafts pass through the collection cover. A storage box is fixedly connected to the lower end of the mounting base. The storage box has an installation cavity and a sample cavity. A pump is fixedly connected to the bottom of the installation cavity. The inlet of the pump is connected to the collection cover via a connecting pipe, and the outlet of the pump is connected to the sample cavity via a discharge pipe. A filter screen is fixedly connected to the inner wall of the sample cavity.

[0011] Preferably, a drain pipe is fixedly connected to the side wall of the storage box, one end of the drain pipe is connected to the sample chamber, and a one-way valve is installed on the inner wall of both the discharge pipe and the drain pipe.

[0012] Preferably, a discharge pipe is fixedly connected to the lower end of the storage box, the upper end of the discharge pipe is connected to the sample chamber, and a solenoid valve is installed on the inner wall of the discharge pipe.

[0013] Preferably, the mounting base is equipped with an anti-escape mechanism, which includes a rectangular plate fixedly connected to the side wall of the mounting base. The rectangular plate has one water inlet cavity 1 and two water inlet cavities 2, and the two water inlet cavities 2 are symmetrically arranged along the center of the water inlet cavity 1. The bottom of the water inlet cavity 1 has multiple micro-holes 1, and the bottom of the water inlet cavities 2 has multiple micro-holes 2, and the multiple micro-holes 1 and micro-holes 2 are arranged in a linear array.

[0014] Preferably, the escape prevention mechanism further includes a bypass pipe fixedly connected to the side wall of the drain pipe. One end of the bypass pipe is connected to the drain pipe. A branch pipe is fixedly connected to the upper end of the rectangular plate. One end of the branch pipe is connected to the first water inlet chamber and the second water inlet chamber. The other end of the branch pipe is connected to the bypass pipe. A booster pump is fixedly connected to the inner wall of the bypass pipe. The booster pump is connected to the near-infrared spectral sensor through a PLC control circuit.

[0015] Preferably, all of the micro-holes are inclined toward the brush roller, and the angle between the micro-holes and the horizontal direction is 30°.

[0016] The present invention has the following beneficial effects:

[0017] 1. By setting up a collection mechanism and using a near-infrared spectral sensor, the main biochemical components of the attached organisms can be identified in situ, quickly, and non-destructively before sampling. Based on this information, the core sampling parameters are automatically and accurately adjusted. On the one hand, by controlling the electric heating plate and the semiconductor cooling chip, the temperature of the SMP core rod is changed, allowing it to reversibly change between a hard glassy state and a soft rubbery state, thereby adjusting the overall stiffness of the flexible hollow rod. On the other hand, the speed of the drive motor is adjusted synchronously. When dealing with soft algae or animal tissues, a gentle mode with a soft brush and low speed is used to protect the integrity of the sample cell structure to the greatest extent. When dealing with hard calcareous organisms, a strong mode with a hard brush and high speed is used to ensure effective peeling, achieving optimized and differentiated collection of different types of attached organisms.

[0018] 2. By setting up an anti-escape mechanism, the filtered seawater after sampling is used as the water source. After being accelerated by a booster pump, it is ejected through an array of multiple micro-holes 1 and 2. Based on the principle of jet attraction, a continuous semi-enclosed fluid water curtain is formed. This water curtain can effectively absorb and constrain the kinetic energy of the splashed debris during brushing and guide it to the inlet of the collection hood, which significantly improves the sample recovery rate. Compared with simply relying on suction force, the active fluid constraint anti-escape effect is better.

[0019] 3. The booster pump power of the water curtain system is linked to the core sampling. When hard deposits are identified and a powerful cleaning mode is activated, the system automatically increases the booster pump power to generate a water curtain with higher intensity and stronger restraint to cope with more intense debris splashing. When soft deposits are identified and a gentle mode is used, the water curtain intensity is automatically reduced. This saves energy while ensuring basic isolation effect, making the system more energy-efficient and adaptable. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a sampling device for marine ecological monitoring reef attachments proposed in this invention;

[0021] Figure 2 for Figure 1 Side view of the middle structure;

[0022] Figure 3 for Figure 1 Cross-sectional view of the middle structure;

[0023] Figure 4 for Figure 3 A cross-sectional view of a flexible hollow slender rod;

[0024] Figure 5 for Figure 1 A cross-sectional view of the rectangular plate.

[0025] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point A in the diagram;

[0026] Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0027] In the diagram: 1. Unmanned submersible; 2. Mounting base; 3. Fixing frame; 4. Rotating shaft; 5. Brush roller; 6. Flexible hollow rod; 7. SMP core rod; 8. Hollow cavity; 9. Electric heating plate; 10. Waterproof motor; 11. Near-infrared spectral sensor; 12. Flexible heat insulation sleeve; 13. Annular cavity; 14. Collection cover; 15. Storage box; 16. Mounting cavity; 17. Sample cavity; 18. Pump; 19. Connecting pipe; 20. Discharge pipe; 21. Drain pipe; 22. One-way valve; 23. Outlet pipe; 24. Solenoid valve; 25. Filter screen; 26. Rectangular plate; 27. Water inlet chamber one; 28. Water inlet chamber two; 29. ​​Micropore one; 30. Micropore two; 31. Bypass pipe; 32. Branch pipe; 33. Booster pump; 34. Semiconductor refrigeration chip. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Reference Figures 1-4 A sampling device for marine ecological monitoring of reef attachments includes an unmanned submersible 1 and a mounting base 2. The mounting base 2 is fixedly connected to the unmanned submersible 1 by multiple sets of bolts, and also includes a sampling mechanism.

[0030] The sampling mechanism includes a fixed frame 3 fixedly connected to the lower end of the mounting base 2. Two rotating shafts 4 are symmetrically rotatably connected to the inner wall of the fixed frame 3. A brush roller 5 is fixedly connected to one end of each rotating shaft 4 that is close to the other. The brush roller 5 is made of thermal insulation material. Multiple flexible hollow rods 6 are fixedly connected to the side wall of the brush roller 5. Each flexible hollow rod 6 has an embedded SMP core rod 7. The SMP core rod 7 is made of shape memory polymer. When heated to its glass transition temperature, it transforms from a rigid form to a soft and elastic form. By adjusting the material ratio, the glass transition temperature of the SMP core rod 7 can be controlled at around 40 degrees Celsius, which is existing technology. A hollow cavity 8 is formed inside the brush roller 5, and multiple electric heating elements are fixedly connected to the inner wall of the hollow cavity 8. The heating plate 9 and the hollow cavity 8 are filled with silicone oil, which is insulating and highly thermally conductive. One end of the SMP core rod 7 extends into the hollow cavity 8. Multiple semiconductor cooling chips 34 are fixedly embedded in the bottom of the hollow cavity 8. The cooling end of the semiconductor cooling chip 34 faces into the hollow cavity 8, and its heat dissipation surface faces outward from the brush roller 5. This is existing technology. A waterproof motor 10 is fixedly connected to the lower end of the fixing frame 3. The waterproof motor 10 has a waterproof function. This is existing technology. The output end of the waterproof motor 10 passes through the bottom of the fixing frame 3 and is fixedly connected to the rotating shaft 4. A near-infrared spectral sensor 11 is fixedly connected to the side wall of the unmanned underwater vehicle 1. The electric heating plate 9, the waterproof motor 10, the semiconductor cooling chip 34 and the near-infrared spectral sensor 11 are connected through a PLC control circuit.

[0031] The SMP core rod 7 is covered by a flexible heat insulation sleeve 12 on the side wall inside the flexible hollow thin rod 6. The flexible heat insulation sleeve 12 is made of flexible aerogel material, and an annular cavity 13 is opened in the brush roller 5. The annular cavity 13 is arranged around the hollow cavity 8, and the interior of the annular cavity 13 is filled with heat insulation material, which can effectively reduce heat loss and ensure that the SMP core rod 7 remains in a softened state.

[0032] Furthermore, by using heat-insulating materials to make the brush roller 5, the flexible heat-insulating sleeve 12, and the heat-insulating materials in the annular cavity 13, a good heat-insulating effect can be achieved, preventing the heat on the SMP core rod 7 from being lost quickly, thus preventing the SMP core rod 7 from maintaining a stable soft state.

[0033] The sampling mechanism also includes a collection cover 14 fixedly connected to the lower end of the mounting base 2 via a bracket. The open end of the collection cover 14 extends into the fixing frame 3. Both rotating shafts 4 pass through the collection cover 14. A storage box 15 is fixedly connected to the lower end of the mounting base 2. The storage box 15 has an installation cavity 16 and a sample cavity 17. A pump 18 is fixedly connected to the bottom of the installation cavity 16. The inlet of the pump 18 is connected to the collection cover 14 via a connecting pipe 19. The outlet of the pump 18 is connected to the sample cavity 17 via a discharge pipe 20. A filter screen 25 is fixedly connected to the inner wall of the sample cavity 17.

[0034] A drain pipe 21 is fixedly connected to the side wall of the storage box 15. One end of the drain pipe 21 is connected to the sample chamber 17. Both the discharge pipe 20 and the drain pipe 21 are equipped with one-way valves 22. The one-way valve 22 installed on the inner wall of the discharge pipe 20 only allows the sample to enter the sample chamber 17, and the one-way valve 22 installed on the inner wall of the drain pipe 21 only allows the seawater in the sample chamber 17 to be discharged.

[0035] Furthermore, during installation, the mounting base 2 is fixed to the unmanned submersible 1 with bolts to complete the mounting. During sampling, the remotely controlled unmanned submersible 1 is moved to the target reef area, and then the waterproof motor 10 is started to drive the rotating shaft 4 to rotate, which in turn drives the brush roller 5 to rotate. The brush roller 5 drives multiple flexible hollow thin rods 6 to rotate, cleaning the surface of the reef. The attached substances on the surface of the reef will be swept off. At the same time, the suction pump 18 is started to generate suction force. The swept-off attached substances, along with the surrounding seawater, will be collected through the collection cover 14 and the connecting pipe 19. Then, it will enter the sample chamber 17 through the discharge pipe 20. The filter screen 25 will intercept the sample in the sample chamber 17, while the seawater will be discharged through the drain pipe 21.

[0036] It is worth mentioning that before collecting samples, the near-infrared spectral sensor 11 first monitors the surface of the reef and emits a corresponding signal based on the length of the infrared characteristic absorption band. If the monitored infrared characteristic absorption band is between 680nm and 1800nm, the attached material on the reef surface is algae or animal tissue. Since algae or animal soft tissue are relatively fragile, excessive collection force will damage the cell structure and cause sample damage. At this time, the near-infrared spectral sensor 11 will emit a signal to power the electric heating plate 9 through the PLC control circuit and simultaneously reduce the speed of the waterproof motor 10. Powering the electric heating plate 9 will... The silicone oil inside the hollow cavity 8 is heated. Due to the insulating and highly thermally conductive properties of silicone oil, the heat is quickly transferred to the SMP core rod 7. When the SMP core rod 7 is heated to 40 degrees Celsius, it reaches its glass transition temperature, causing it to soften rapidly, becoming flexible and elastic. Consequently, the flexible hollow rod 6 also becomes flexible. At this time, the speed of the waterproof motor 10 and the brush roller 5 decrease, leading to a decrease in the speed of the flexible hollow rod 6. This reduction in stiffness reduces the cleaning force of the flexible hollow rod 6 on the adhering substances, thus preventing over-cleaning. The strong cleaning force destroys the cellular structure of algae or animal soft tissues. When the infrared characteristic absorption band monitored by the near-infrared spectral sensor 11 is between 1850-2350nm, the attached material on the reef surface is calcium carbonate, possibly barnacles, oysters, coral algae, and other calcareous organisms. It is very hard and difficult to peel off. At this time, the near-infrared spectral sensor 11 will send a signal, which will control the semiconductor cooling chip 34 to start through the PLC control circuit, de-energize the electric heating plate 9, and simultaneously increase the speed of the waterproof motor 10. The cooling end of the semiconductor cooling chip 34 will cool the silicone oil, and then the SMP core rod 7 will also... Cooling occurs when the temperature of the SMP core rod 7 drops below 40 degrees Celsius, causing it to become a hard solid. This increases the rigidity of the flexible hollow rod 6, and the increased speed of the waterproof motor 10 accelerates the rotation of the brush roller 5. The increased rotation speed of the flexible hollow rod 6, combined with the increased rigidity, results in increased overall cleaning force, making it easier to sweep hard calcareous organisms off the reef surface for collection. Therefore, the entire device can intelligently adjust the collection force and the rigidity of the contact material according to the type of reef attachment, ensuring that the cellular structure of the attachment is not damaged while maintaining the collection force.

[0037] The lower end of the storage box 15 is fixedly connected to the discharge pipe 23, the upper end of the discharge pipe 23 is connected to the sample chamber 17, and a solenoid valve 24 is installed on the inner wall of the discharge pipe 23. By energizing the solenoid valve 24 to open it, the sample collected in the sample chamber 17 can be discharged through the discharge pipe 23.

[0038] Reference Figures 5-7As shown, an anti-escape mechanism is installed on the mounting base 2. The anti-escape mechanism includes a rectangular plate 26 fixedly connected to the side wall of the mounting base 2. The rectangular plate 26 has one water inlet cavity 27 and two water inlet cavities 28. The two water inlet cavities 28 are symmetrically arranged along the center of the water inlet cavity 27. Multiple micro-holes 29 are opened at the bottom of the water inlet cavity 27. The multiple micro-holes 29 are all inclined towards the brush roller 5, and the angle between the micro-holes 29 and the horizontal direction is 30°. Multiple micro-holes 30 are opened at the bottom of the water inlet cavities 28. The multiple micro-holes 29 and the micro-holes 30 are arranged in a linear array.

[0039] The escape prevention mechanism also includes a bypass pipe 31 fixedly connected to the side wall of the drain pipe 21. One end of the bypass pipe 31 is connected to the drain pipe 21. A branch pipe 32 is fixedly connected to the upper end of the rectangular plate 26. One end of the branch pipe 32 is connected to the first water inlet chamber 27 and the second water inlet chamber 28. The other end of the branch pipe 32 is connected to the bypass pipe 31. A booster pump 33 is fixedly connected to the inner wall of the bypass pipe 31. The booster pump 33 is connected to the near-infrared spectral sensor 11 through a PLC control circuit.

[0040] Furthermore, some seawater in the drain pipe 21 enters the bypass pipe 31. The seawater in the bypass pipe 31 is pressurized by the booster pump 33 and then pumped into the branch pipe 32. The high-pressure seawater then enters the first inlet chamber 27 and the two second inlet chambers 28 through the branch pipe 32. Finally, the seawater is ejected through multiple micro-holes 29 and 30. Because micro-holes 29 and 30 are arranged in a dense linear array, the gaps between the ejected water streams are very small. Based on the principle of jet attraction, the parallel fine jets attract and merge with each other at close range. Consequently, these ejected jets form a relatively continuous fluid plane below the micro-holes 29 and 30, effectively creating a water curtain. This allows a water curtain to be formed on the left side and both sides of the brush roller 5 (e.g., ...). Figure 3 As shown, a semi-enclosed water curtain is formed around the reef. When the splashed debris comes into contact with the water curtain, its kinetic energy is absorbed by the water curtain, which can prevent the debris swept off the reef from scattering and escaping, thereby reducing sample loss. Since the horizontal direction of the micro-holes 29 is at a 30° angle and its opening faces the brush roller 5, the water curtain formed by the water jets from multiple micro-holes 29 will be tilted towards the surface of the reef, thus forming two streams perpendicular to the reef and parallel to the reef. The stream parallel to the reef can suppress the debris swept off from flying upwards, while the stream perpendicular to the reef can push the debris towards the collection hood 14, thereby facilitating collection.

[0041] It is worth mentioning that when collecting calcareous organisms, the splashed calcareous organisms have high kinetic energy due to the large collection force. At this time, the near-infrared spectral sensor 11 can control the power of the booster pump 33 through the PLC control circuit to increase the water pressure and jet speed through the micro-hole 29 and micro-hole 30, thus forming a high-intensity water curtain that can intercept larger and higher-energy attached objects. Conversely, when collecting algae and animal soft tissues, the power of the booster pump 33 will be reduced, and it is only necessary to maintain the stability of the water curtain, which can reduce energy consumption. Therefore, the intensity of the water curtain can be automatically adjusted according to the collection force to suit different collection conditions.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sampling device for marine ecological monitoring of reef attachments, comprising an unmanned submersible (1) and a mounting base (2), characterized in that, It also includes sampling mechanisms; The sampling mechanism includes a fixed frame (3) fixedly connected to the lower end of the mounting base (2). Two rotating shafts (4) are symmetrically rotatably connected to the inner wall of the fixed frame (3). A brush roller (5) is fixedly connected to one end of each rotating shaft (4) that is close to the other. Multiple flexible hollow rods (6) are fixedly connected to the side wall of the brush roller (5). An SMP core rod (7) is fixedly embedded in each flexible hollow rod (6). A hollow cavity (8) is formed inside the brush roller (5). Multiple electric heating plates (9) are fixedly connected to the inner wall of the hollow cavity (8), and the hollow cavity (8) is filled with silicone oil. One end of the SMP core rod (7) extends into the hollow cavity (8). Multiple semiconductor cooling chips (34) are fixedly embedded in the bottom of the hollow cavity (8). A waterproof motor (10) is fixedly connected to the lower end of the fixing frame (3). The output end of the waterproof motor (10) passes through the bottom of the fixing frame (3) and is fixedly connected to the rotating shaft (4). A near-infrared spectral sensor (11) is fixedly connected to the side wall of the unmanned submersible (1). The electric heating plate (9), the waterproof motor (10), the semiconductor cooling chip (34), and the near-infrared spectral sensor (11) are connected through a PLC control circuit.

2. The sampling device for marine ecological monitoring reef attachments according to claim 1, characterized in that, The mounting base (2) is fixedly connected to the unmanned underwater vehicle (1) by multiple sets of bolts.

3. The sampling device for marine ecological monitoring reef attachments according to claim 1, characterized in that, The SMP core rod (7) is covered with a flexible heat insulation sleeve (12) on the side wall inside the flexible hollow thin rod (6), and the brush roller (5) has an annular cavity (13) inside, which surrounds the hollow cavity (8).

4. The sampling device for marine ecological monitoring reef attachments according to claim 1, characterized in that, The sampling mechanism also includes a collection cover (14) fixedly connected to the lower end of the mounting base (2) by a bracket. The opening end of the collection cover (14) extends into the fixed frame (3). Both of the rotating shafts (4) pass through the collection cover (14). A storage box (15) is fixedly connected to the lower end of the mounting base (2). The storage box (15) has an installation cavity (16) and a sample cavity (17). A pump (18) is fixedly connected to the bottom of the installation cavity (16). The inlet of the pump (18) is connected to the collection cover (14) through a connecting pipe (19). The outlet of the pump (18) is connected to the sample cavity (17) through a discharge pipe (20). A filter screen (25) is fixedly connected to the inner wall of the sample cavity (17).

5. A sampling device for marine ecological monitoring reef attachments according to claim 4, characterized in that, The storage box (15) is fixedly connected to a drain pipe (21) on its side wall. One end of the drain pipe (21) is connected to the sample chamber (17), and a one-way valve (22) is installed on the inner wall of both the discharge pipe (20) and the drain pipe (21).

6. A sampling device for marine ecological monitoring reef attachments according to claim 4, characterized in that, The storage box (15) is fixedly connected to the lower end of the discharge pipe (23), the upper end of the discharge pipe (23) is connected to the sample chamber (17), and a solenoid valve (24) is installed on the inner wall of the discharge pipe (23).

7. A sampling device for marine ecological monitoring reef attachments according to claim 5, characterized in that, An escape prevention mechanism is installed on the mounting base (2). The escape prevention mechanism includes a rectangular plate (26) fixedly connected to the side wall of the mounting base (2). The rectangular plate (26) has a water inlet cavity 1 (27) and two water inlet cavities 2 (28) and the two water inlet cavities 2 (28) are symmetrically arranged along the center of the water inlet cavity 1 (27). The bottom of the water inlet cavity 1 (27) has multiple micro-holes 1 (29) and the bottom of the water inlet cavity 2 (28) has multiple micro-holes 2 (30). The multiple micro-holes 1 (29) and micro-holes 2 (30) are arranged in a linear array.

8. A sampling device for marine ecological monitoring reef attachments according to claim 7, characterized in that, The escape prevention mechanism also includes a bypass pipe (31) fixedly connected to the side wall of the drain pipe (21). One end of the bypass pipe (31) is connected to the drain pipe (21). A branch pipe (32) is fixedly connected to the upper end of the rectangular plate (26). One end of the branch pipe (32) is connected to the first water inlet chamber (27) and the second water inlet chamber (28). The other end of the branch pipe (32) is connected to the bypass pipe (31). A booster pump (33) is fixedly connected to the inner wall of the bypass pipe (31). The booster pump (33) is connected to the near-infrared spectral sensor (11) through a PLC control circuit.

9. A sampling device for marine ecological monitoring reef attachments according to claim 6, characterized in that, The multiple micro-holes (29) are all inclined toward the brush roller (5), and the angle between the micro-holes (29) and the horizontal direction is 30°.

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