Field survey equipment and method for assessing invertebrate habitat conditions

Abstract

The present invention discloses a field survey device and method for assessing the status of invertebrate habitats. The device comprises a first float, a bracket mounted on the first float, a winding device mounted on the bracket, a pull rope mounted on the winding device, and an in-water survey assembly mounted on one end of the pull rope. This technical solution places the float in the waters of the invertebrate habitat to be surveyed, allowing the in-water survey assembly to enter the waters. A wireless module transmits water quality data of the invertebrate habitat collected by a water quality detection sensor and image data of the invertebrate habitat collected by an image acquisition device to an external monitoring terminal for processing, allowing users to assess the status of the invertebrate habitat. This method can replace manual real-time collection of habitat status, reducing the difficulty of the survey and the intensity of manual labor.

Description

Technical Field

[0001] The present invention relates to the technical field of biological survey equipment, in particular to a field survey equipment and method for evaluating the habitat conditions of invertebrates. Background Art

[0002] Invertebrates are animals without a spine on their backs; they represent a primitive form of animal life. Macrobenthic invertebrates are a type of invertebrate. These macroinvertebrates are visible aquatic organisms that live on the bottom of the water or cling to aquatic plants and rocks. Surveying the habitats of these macroinvertebrates can help us understand and control the health of aquatic ecosystems.

[0003] Currently, surveys of macroinvertebrate habitat conditions typically involve manually collecting data using collection equipment. However, since macroinvertebrates primarily inhabit the bottom or water, this is cumbersome to do manually. Furthermore, some macroinvertebrates live in harsh habitats, making surveys more challenging. Therefore, we propose a field survey device and method for assessing invertebrate habitat conditions. Summary of the Invention

[0004] The object of the present invention is to provide a field survey device and method for evaluating the status of invertebrate habitats, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A field survey device for assessing the habitat conditions of invertebrates, comprising a first floating board, a bracket provided on the first floating board, a winding device provided on the bracket, a pull rope provided on the winding device, and a water survey component provided at one end of the pull rope; wherein,

[0007] The water entry investigation component includes an electrical part, which includes a shell connected to one end of the pull rope. The inner cavity of the shell is separated by two groups of partitions. The two groups of partitions divide the inner cavity of the shell from top to bottom into cavity one, cavity two, and cavity three. The outer wall of the partition is embedded with a curved transparent cover at a position corresponding to cavity one. An image acquisition device corresponding to the curved transparent cover is provided in cavity one. A water quality detection sensor, a power supply module, a wireless module, and a controller are provided in cavity two. The detection end of the water quality detection sensor extends into cavity three. The inner wall of the shell is provided with a plurality of water inlets in a circular array at a position corresponding to cavity three.

[0008] The wireless module is used to send the invertebrate habitat water quality data collected by the water quality detection sensor and the invertebrate habitat image data collected by the image acquisition device to an external monitoring terminal for processing.

[0009] A further improvement is that a plurality of groups of heat dissipating fins are inserted in a circular array at positions of the outer wall of the shell corresponding to the first cavity and the second cavity.

[0010] A further improvement is that a floating airbag is provided on the side wall of the first floating plate.

[0011] A further improvement is that the water entry survey assembly further includes an anti-loss portion for connecting the other end of the pull rope and the housing, the anti-loss portion including a hollow seat provided on the housing, a movable plate connected to the other end of the pull rope and movably provided within the hollow seat, a spring connecting the movable plate and the bottom inner wall of the hollow seat, and a pressure sensor provided on the top inner wall of the hollow seat for contacting the movable plate;

[0012] The pressure sensor is used to receive a pressure signal from the movable plate. When the movable plate is separated from the pressure sensor, the pressure sensor sends a signal to the controller, and the controller sends a signal through the wireless module to control the operation of the external alarm device.

[0013] A further improvement is that the anti-loss part also includes a placement shell arranged at the end of the hollow seat and with a hollow top, a second floating plate clamped on the top of the placement shell for closing the top of the placement shell, a light-emitting part arranged on the second floating plate, a horizontally rotatable shaft arranged in the placement shell, and a rope body wound on the outer wall of the shaft body, the inner end of the shaft body movably passes through the inner side of the placement shell and the outer end of the hollow seat and extends to the inner cavity of the hollow seat, and a driving part is provided on the outer wall of the shaft body, and the driving part is used to drive the shaft body to rotate and unwind the rope body when the movable plate is separated from the pressure sensor, and at the same time drive the second floating plate to separate from the placement shell.

[0014] The cam is adapted to engage the movable plate and move the movable plate to the movable plate so as to engage the movable plate and move the movable plate to the movable plate.

[0015] When the movable plate contacts the pressure sensor upward, the contact rod pushes the wedge block to drive the movable plate to move toward the outside of the hollow seat. The movement of the movable plate drives the second friction block to squeeze the first friction block through the elastic telescopic rod, so that the shaft body is in a fixed state; when the movable plate separates from the pressure sensor downward, the second spring drives the movable plate to move toward the inside of the hollow seat. The movement of the movable plate drives the second friction block to separate from the first friction block through the elastic telescopic rod, so that the shaft body is in an active state.

[0016] A further improvement is that a ring body for connecting ropes is provided on one side of the bracket.

[0017] A further improvement is that a semicircular base is provided at the bottom of the shell, a semicircular arc counterweight is provided at the bottom of the inner cavity of the semicircular base, and the diameter of the semicircular arc counterweight is smaller than the diameter of the semicircular base.

[0018] A method for field surveying to assess the status of invertebrate habitats, using the above-mentioned field survey equipment, specifically comprises the following steps:

[0019] S1: Place the first float in the waters of the invertebrate habitat to be surveyed, and send a signal to the controller through the external monitoring terminal. After receiving the signal, the wireless module controls the winding device to unwind the rope, and then the submersible survey component descends into the waters under the action of gravity until it descends to the designated position in the waters, and then the winding device is closed;

[0020] S2: The detection end of the water quality detection sensor collects water flowing in from the water inlet to obtain water quality data of the invertebrate habitat, and the image acquisition device collects image data of the invertebrate habitat in the water area;

[0021] S3: The wireless module sends the water quality data of the invertebrate habitat collected by the water quality detection sensor and the image data of the invertebrate habitat collected by the image acquisition device to the external monitoring terminal for processing.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) This technical solution places a floating board in the waters of the invertebrate habitat to be surveyed, allowing the submerged survey component to enter the waters. The water quality data of the invertebrate habitat collected by the water quality detection sensor and the image data of the invertebrate habitat collected by the image acquisition device are sent to the external monitoring terminal for processing via a wireless module, so that users can assess the status of the invertebrate habitat. This method can replace manual real-time collection of habitat status, reducing the difficulty of the survey and the intensity of manual labor;

[0024] 2) This technical solution is equipped with an anti-loss part. When the pull rope connecting the water investigation component breaks, the driving part drives the second float to separate from the placement shell and the shaft rotates to unwind the rope, so that the second float floats up to the water surface to cooperate with the light-emitting part, making it convenient for external users to determine the position of the water investigation component from the surface of the water area, thereby retrieving the water investigation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic structural diagram of the water entry survey component of the present invention;

[0027] Figure 3 For the present invention Figure 2 Structural cross-sectional view in;

[0028] Figure 4 Schematic diagram of the anti-loss part structure in the present invention;

[0029] Figure 5 For the present invention Figure 4 A magnified schematic diagram of structure A in .

[0030] In the figure: 1. Floating plate 1; 2. Floating airbag; 3. Bracket; 4. Pull rope; 5. Shell; 6. Partition; 7. Cavity 1; 8. Cavity 2; 9. Cavity 3; 10. Curved transparent cover; 11. Image acquisition device; 12. Water quality detection sensor; 13. Heat dissipation fins; 14. Water inlet; 15. Semicircular base; 16. Semicircular counterweight; 17. Movable plate; 18. Pressure sensor; 19. Hollow seat; 20. Movable port; 21. Shaft; 22. Impeller; 23. Placement shell; 24. Floating plate 2; 25. Rope; 26. Light-emitting part; 27. Eccentric wheel; 28. Friction block 1; 29. ​​Elastic telescopic rod; 30. Movable plate; 31. Wedge block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see the attached Figure 1 -Attached Figure 3A field survey equipment for assessing the status of invertebrate habitats includes a float 1, a bracket 3 provided on the float 1, a winding device provided on the bracket 3, and a pull rope 4 provided on the winding device, and also includes an in-water survey component provided at one end of the pull rope 4. The side wall of the float 1 is provided with a floating air bag 2 to enable the float 1 to float stably on the water surface. The winding device belongs to the existing technology, such as a winch. The pull rope 4 can be reeled in by the winding device to enable the in-water survey component to be raised and lowered relative to the float 1. The in-water survey component is used to enter the water area of ​​the invertebrate habitat. A ring body for connecting the rope is provided on one side of the bracket 3. The other end of the rope can be fixed to the shore by inserting a cone to limit the position of the field survey equipment.

[0034] It should be noted that the present application is used to investigate large benthic invertebrates, which are mainly aquatic organisms visible to the naked eye that live on the bottom of the water or attached to aquatic plants and rocks. When in use, the float 1 is controlled to the habitat of large benthic invertebrates in the water area, and then the pull rope 4 is unwound through the winding device to allow the underwater investigation component to enter the water area to investigate the habitat conditions of large benthic invertebrates.

[0035] Among them, the water entry investigation component includes an electrical part, which includes a shell 5 connected to one end of the pull rope 4. The shell 5 preferably adopts a sealed hollow cylindrical structure; the inner cavity of the shell 5 is separated by two groups of partitions 6, and the two groups of partitions 6 divide the inner cavity of the shell 5 from top to bottom into cavity one 7, cavity two 8 and cavity three 9. The outer wall of the partition 6 corresponds to the position of cavity one 7 and is embedded with an arc-shaped transparent cover 10. The cavity one 7 is provided with an image acquisition device 11 corresponding to the arc-shaped transparent cover 10. For example, the image acquisition device 11 is a camera, and the image acquisition device 11 can collect external image data through the arc-shaped transparent cover 10; the cavity two 8 is provided with a water quality detection sensor 12, a power supply module, a wireless module and a controller. The water quality detection sensor 12 is used to detect the water quality of the invertebrate habitat. The water quality detection sensor 12 can be selected according to actual needs and will not be described in detail here. The power supply module is a battery, which provides power for the electrical components of this application. The wireless module is, for example, a wireless transmitter and a wireless receiver, and the controller is a PLC controller.

[0036] The detection end of the water quality detection sensor 12 extends into the cavity three 9, and the inner wall of the shell 5 corresponds to the position of the cavity three 9 and has multiple groups of water inlets 14 in a circular array. In actual use, an annular filter can be set in the cavity three 9, and the outer wall of the filter fits with the inner wall of the cavity three 9 to filter the liquid entering from the water inlet 14.

[0037] The wireless module is used to send the invertebrate habitat water quality data collected by the water quality detection sensor 12 and the invertebrate habitat image data collected by the image acquisition device 11 to the external monitoring terminal for processing, so that users can evaluate the invertebrate habitat status.

[0038] Preferably, multiple sets of heat dissipation fins 13 are provided in a circular array on the outer wall of the housing 5 in locations corresponding to cavity 1 7 and cavity 2 8 in this embodiment. One end of the heat dissipation fin 13 is located within cavity 1 7 / cavity 2 8 , while the other end is located outside the housing 5 . Heat dissipation fins 13 dissipate heat generated by the electrical components within cavity 1 7 / cavity 2 8 , thereby preventing damage to the internal electrical components caused by the sealed structure of the housing 5 , which could affect heat dissipation.

[0039] Please see the attached Figure 4 -Attached Figure 5 Preferably, the water investigation component of this embodiment also includes an anti-loss portion for connecting the other end of the pull rope 4 and the shell 5. Considering that when the water investigation component is used in entering the water, if the pull rope 4 breaks due to external factors or human factors, the water investigation component will be lost. Since the water investigation component contains many electrical components, the loss will undoubtedly increase the cost. Therefore, the present application sets an anti-loss portion.

[0040] The anti-loss component includes a hollow seat 19 mounted on the housing 5, a movable plate 17 connected to the other end of the pull cord 4 and movable within the hollow seat 19, a spring 1 connecting the movable plate 17 to the bottom inner wall of the hollow seat 19, and a pressure sensor 18 mounted on the top inner wall of the hollow seat 19 for contact with the movable plate 17. During normal use, the weight of the submerged survey assembly causes the pull cord 4 to pull the movable plate 17 into contact with the pressure sensor 18. When the pull cord 4 breaks, the spring 1 forces the movable plate 17 back into place, separating it from the pressure sensor 18. Pressure sensor 18 can be, for example, CYYZ11, but is not limited to this model.

[0041] Pressure sensor 18 receives pressure signals from movable plate 17. When movable plate 17 separates from pressure sensor 18, it sends a signal to the controller, which then sends a signal via the wireless module to activate the external alarm device. If the pull cord 4 breaks, the external alarm device sounds an alert, allowing personnel to locate the submerged survey component.

[0042] Preferably, the anti-loss portion of this embodiment further includes a placement shell 23 with a hollow top provided at the end of the hollow seat 19, a second floating plate 24 clamped on the top of the placement shell 23 for closing the top of the placement shell 23, a light-emitting element 26 provided on the second floating plate 24, a shaft 21 horizontally rotatably provided in the placement shell 23, and a rope 25 wound around the outer wall of the shaft 21. Since the second floating plate 24 is clamped with the top of the placement shell 23, the second floating plate 24 will not separate from the placement shell 23 and float upward to the surface of the water during normal use. The light-emitting element 26 is a fluorescent light-emitting element, so that users can find the underwater investigation component at night.

[0043] The inner end of shaft 21 flexibly penetrates the inside of housing 23 and the outer end of hollow seat 19, extending into the interior of hollow seat 19. A drive unit is provided on the outer wall of shaft 21. This drive unit is used to drive shaft 21 to rotate unwinding rope 25 when movable plate 17 is separated from pressure sensor 18, simultaneously driving float 24 to separate from housing 23. When movable plate 17 is separated from pressure sensor 18, i.e., when pull rope 4 breaks, the drive unit drives float 24 to separate from housing 23, while shaft 21 rotates unwinding rope 25, causing float 24 to float upward to the surface of the water, allowing users outside to confirm the position of the submerged survey assembly.

[0044] Preferably, the driving portion of this embodiment includes a movable plate 30 provided in the inner cavity of the hollow seat 19 and movable along the length direction of the hollow seat 19, a second spring connecting the movable plate 30 and the inner wall of the side of the hollow seat 19, a wedge block 31 provided on the side of the movable plate 30 facing the movable plate 17, a contact rod provided at one end of the movable plate 17 for cooperating with the wedge block 31 to drive the movable plate 30 to move, and an elastic telescopic rod 29 provided on the side of the movable plate 30 away from the movable plate 17. Preferably, a ball is embedded in the end of the contact rod that contacts the wedge block 31.

[0045] A blind hole is provided at the inner end of the shaft body 21 for the elastic telescopic rod 29 to extend into. The diameter of the elastic telescopic rod 29 is smaller than that of the blind hole, so that the elastic telescopic rod 29 will not affect the rotation of the shaft body 21; the inner wall of the bottom of the blind hole and the end of the elastic telescopic rod 29 away from the movable plate 30 are respectively provided with matching friction blocks 1 28 and 2, and the friction blocks 1 28 and 2 are made of rubber material. The outer wall of the shaft body 21 is provided with an impeller 22, which is located in a movable opening 20 that passes through the outer side of the hollow seat 19 from top to bottom. The movable opening 20 is staggered with the inner cavity of the hollow seat 19. The outer wall of the shaft body 21 and the position of the inner cavity of the housing 23 are also provided with an eccentric wheel 27 for pushing the floating plate 24 upward.

[0046] When the movable plate 17 moves upward and contacts the pressure sensor 18, the contact rod pushes the wedge block 31 to drive the movable plate 30 to move toward the outside of the hollow seat 19. The movable plate 30 moves through the elastic telescopic rod 29 to drive the friction block 2 to squeeze the friction block 1 28, so that the shaft 21 is in a fixed state. When the submerged survey assembly moves downward in the water, the water flow will not drive the impeller 22 to drive the shaft 21 to rotate, thereby preventing the shaft 21 from unwinding or rewinding the rope 25.

[0047] When the movable plate 17 moves downward and separates from the pressure sensor 18, the second spring drives the movable plate 30 to move toward the inside of the hollow seat 19. The movement of the movable plate 30 drives the friction block 2 to separate from the friction block 1 28 through the elastic telescopic rod 29, so that the shaft 21 is in an active state, that is, the shaft 21 can rotate; because the pull rope 4 breaks, the water-entering investigation component moves downward. During the downward process, since the friction block 2 separates from the friction block 1 28, the water flow drives the impeller 22 to drive the shaft 21 to rotate and unwind the rope 25. At the same time, the shaft 21 drives the eccentric wheel 27 to push the floating plate 24 upward to separate from the placement shell 23.

[0048] Preferably, both ends of the bottom of the second floating plate 24 of this embodiment are integrally provided with protrusions, and the two sets of protrusions are respectively in contact with the inner walls of the placement shell 23 on both sides. The inner walls of the placement shell 23 on both sides are provided with elastic engaging protrusions, and the protrusions are provided with slots for accommodating the elastic engaging protrusions. The elastic engaging protrusions have an arc-shaped vertical cross-section and are made of, for example, elastic plastic or elastic metal. This allows the eccentric wheel 27 to rotate and push the second floating plate 24 upward, so that the elastic engaging protrusions are disengaged from the slots.

[0049] Of course, it should be noted that the floating plate 24 and the placement shell 23 can also be connected in other ways, such as embedding magnetic parts with opposite magnetic properties in the inner wall of the protrusion or the inner wall of the placement shell 23, so that the floating plate 24 and the placement shell 23 are connected by magnetic adsorption.

[0050] Preferably, the bottom of the housing 5 of this embodiment is provided with a semicircular base 15, and the bottom of the inner cavity of the semicircular base 15 is provided with a semicircular counterweight 16. The diameter of the semicircular counterweight 16 is smaller than that of the semicircular base 15. In this manner, if the pull rope 4 breaks, the submerged survey assembly will rapidly move downward vertically under the action of gravity. This not only accelerates the water flow and drives the impeller 22 to rotate, but also, due to the use of the semicircular base 15 and the semicircular counterweight 16, the housing 5 becomes a tumbler, which is not easily collapsed when it contacts the bottom of the water, thus ensuring that the second float 24 is stably above the surface.

[0051] A method for field surveying to assess the status of invertebrate habitats, using the above-mentioned field survey equipment, specifically comprises the following steps:

[0052] S1: The floating board 241 is placed in the waters of the invertebrate habitat to be surveyed. A signal is sent to the controller via the external monitoring terminal. After receiving the signal, the wireless module controls the winding device to unwind the pull rope 4. Then, the submerged survey component descends into the waters under the action of gravity until it descends to a designated position in the waters, and the winding device is closed.

[0053] S2: The detection end of the water quality detection sensor 12 collects water flowing in from the water inlet 14 to obtain water quality data of the invertebrate habitat and image data of the invertebrate habitat in the water area collected by the image acquisition device 11;

[0054] S3: The wireless module sends the water quality data of the invertebrate habitat collected by the water quality detection sensor 12 and the image data of the invertebrate habitat collected by the image acquisition device 11 to an external monitoring terminal for processing.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A field survey device for assessing the habitat conditions of invertebrates, comprising a floating board (1), a bracket (3) provided on the floating board (1), a winding device provided on the bracket (3), and a pull rope (4) provided on the winding device, characterized in that: It also includes a water survey component provided at one end of the pull rope (4); wherein, The water entry investigation component includes an electrical part, which includes a shell (5) connected to one end of a pull rope (4), and the inner cavity of the shell (5) is separated by two groups of partitions (6). The two groups of partitions (6) divide the inner cavity of the shell (5) from top to bottom into cavity one (7), cavity two (8) and cavity three (9). The outer wall of the partition (6) is embedded with an arc-shaped transparent cover (10) at a position corresponding to cavity one (7). An image acquisition device (11) corresponding to the arc-shaped transparent cover (10) is provided in the cavity one (7). A water quality detection sensor (12), a power supply module, a wireless module and a controller are provided in the cavity two (8). The detection end of the water quality detection sensor (12) extends into cavity three (9). The inner wall of the shell (5) is provided with multiple groups of water inlets (14) in a circular array at a position corresponding to cavity three (9). The wireless module is used to send the invertebrate habitat water quality data collected by the water quality detection sensor (12) and the invertebrate habitat image data collected by the image acquisition device (11) to an external monitoring terminal for processing; The water entry investigation assembly further comprises an anti-loss portion for connecting the other end of the pull rope (4) and the housing (5), the anti-loss portion comprising a hollow seat (19) provided on the housing (5), a movable plate (17) connected to the other end of the pull rope (4) and movably provided in the hollow seat (19), a spring connecting the movable plate (17) and the bottom inner wall of the hollow seat (19), and a pressure sensor (18) provided on the top inner wall of the hollow seat (19) for contacting the movable plate (17); The pressure sensor (18) is used to receive a pressure signal from the movable plate (17). When the movable plate (17) is separated from the pressure sensor (18), the pressure sensor (18) sends a signal to the controller, and the controller sends a signal via a wireless module to control the operation of the external alarm device. The anti-loss part also includes a placement shell (23) provided at the end of the hollow seat (19) and having a hollow top, a second floating plate (24) clamped on the top of the placement shell (23) for closing the top of the placement shell (23), a light-emitting component (26) provided on the second floating plate (24), a shaft (21) horizontally rotatably provided in the placement shell (23), and a rope (25) wound on the outer wall of the shaft (21), wherein the inner end of the shaft (21) movably passes through the inner side of the placement shell (23) and the outer end of the hollow seat (19) and extends to the inner cavity of the hollow seat (19), and a driving part is provided on the outer wall of the shaft (21), and the driving part is used to drive the shaft (21) to rotate and unwind the rope (25) when the movable plate (17) is separated from the pressure sensor (18), and at the same time drive the second floating plate (24) to separate from the placement shell (23); The driving part comprises a moving plate (30) arranged in the inner cavity of the hollow seat (19) and movable along the length direction of the hollow seat (19), a spring connecting the moving plate (30) and the inner wall of the side of the hollow seat (19), a wedge block (31) arranged on the side of the moving plate (30) facing the movable plate (17), a contact rod arranged at one end of the movable plate (17) for cooperating with the wedge block (31) to drive the moving plate (30) to move, and an elastic telescopic rod (29) arranged on the side of the moving plate (30) away from the movable plate (17). The inner end of the shaft (21) is opened. A blind hole is provided for the elastic telescopic rod (29) to extend into, and the inner wall of the bottom of the blind hole and the end of the elastic telescopic rod (29) away from the movable plate (30) are respectively provided with a matching friction block 1 (28) and a friction block 2. The outer wall of the shaft body (21) is provided with an impeller (22), and the impeller (22) is located in a movable opening (20) that penetrates the outer side of the hollow seat (19) from top to bottom. The outer wall of the shaft body (21) is also provided with an eccentric wheel (27) at a position in the inner cavity of the placement shell (23) for pushing the floating plate 2 (24) upward. When the movable plate (17) moves upward to contact the pressure sensor (18), the contact rod pushes the wedge block (31) to drive the movable plate (30) to move toward the outside of the hollow seat (19), and the movable plate (30) moves through the elastic telescopic rod (29) to drive the friction block 2 to squeeze the friction block 1 (28), so that the shaft (21) is in a fixed state; when the movable plate (17) moves downward to separate from the pressure sensor (18), the spring 2 drives the movable plate (30) to move toward the inside of the hollow seat (19), and the movable plate (30) moves through the elastic telescopic rod (29) to drive the friction block 2 to separate from the friction block 1 (28), so that the shaft (21) is in an active state.

2. The field survey equipment according to claim 1, characterized in that: The outer wall of the shell (5) is provided with a plurality of groups of heat dissipation fins (13) in a circular array at positions corresponding to the first cavity (7) and the second cavity (8).

3. The field survey equipment according to claim 1, characterized in that: The side wall of the floating plate 1 (1) is provided with a floating air bag (2).

4. The field survey equipment according to claim 1, characterized in that: A ring body for connecting ropes is provided on one side of the bracket (3).

5. The field survey equipment according to claim 1, characterized in that: A semicircular base (15) is provided at the bottom of the shell (5), and a semicircular arc-shaped counterweight (16) is provided at the bottom of the inner cavity of the semicircular base (15). The diameter of the semicircular arc-shaped counterweight (16) is smaller than the diameter of the semicircular base (15).

6. A method for field surveying to assess invertebrate habitat conditions, utilizing the field survey apparatus of claim 1, characterized in that: The specific steps include: S1: Place the float (1) in the waters of the invertebrate habitat to be investigated, send a signal to the controller through the external monitoring terminal, and after receiving the signal, the wireless module controls the winding device to unwind the pull rope (4), and then the submerged investigation component descends into the waters under the action of gravity until the submerged investigation component descends to a designated position in the waters and then closes the winding device; S2: The detection end of the water quality detection sensor (12) collects water flow entering from the water inlet (14) to obtain water quality data of the invertebrate habitat and image data of the invertebrate habitat in the water area collected by the image acquisition device (11); S3: The wireless module sends the water quality data of the invertebrate habitat collected by the water quality detection sensor (12) and the image data of the invertebrate habitat collected by the image acquisition device (11) to the external monitoring terminal for processing.

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