Fish passing monitoring device

Abstract

The present application relates to the technical field of fishway, and particularly relates to a fish passing monitoring device. The fish passing monitoring device provided by the present application comprises: a fence, an inner wall of which encloses a channel suitable for the migration fish to pass through, and the fence is suitable to be fixed in the inside of the fishway; a plurality of bars arranged in the inside of the fence and suitable to separate the inside channel of the fence into a plurality of fish passing units; a camera connected with the bars and suitable to shoot the fish passing units; a data acquisition module in communication connection with the camera and suitable to acquire the shooting video information of the camera; and a control module in communication connection with the camera and the data acquisition module and suitable to control the running state of the camera and the data acquisition module. The fish passing monitoring device provided by the present application improves the image quality acquired by the camera, and is beneficial to the subsequent identification and statistics of the fish.

Description

Technical Field

[0001] This invention relates to the field of fish passage technology, specifically to a fish passage monitoring device. Background Technology

[0002] Fish passages are channels for fish migration. They are remedial measures taken when human activities disrupt fish migration routes, typically by constructing artificial channels on sluice gates or dams to protect fish behavior. After construction, monitoring systems can be installed to track and statistically analyze migrating fish, helping to measure the environmental benefits of fish passage facilities and providing support for future operational optimization.

[0003] Current technology simply involves setting up cameras inside the fishway to film the situation within it. The main problems with this method are: 1. When the water inside the fishway is too turbid, it is impossible to effectively monitor the fish passing through the fishway using the camera; 2. Migratory fish are prone to overlapping in the camera's field of view, which is not conducive to subsequent fish statistics and identification; 3. Migratory fish tend to swim back and forth inside the fishway, which is not conducive to subsequent statistical analysis of the fish. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology in which the camera in the fish passage is difficult to obtain high-quality raw data, which is not conducive to subsequent statistical analysis, and thus provide a fish passage monitoring device.

[0005] The fish passage monitoring device provided by the present invention includes:

[0006] A fence, the inner walls of which form a passage suitable for migratory fish to pass through, the fence being adapted to be fixed inside the fishway;

[0007] Several slats are arranged inside the fence to divide the internal passage of the fence into multiple fish passage units;

[0008] A camera, connected to the grid, is adapted to capture images of the fish passage unit;

[0009] The data acquisition module is communicatively connected to the camera and is adapted to acquire video information captured by the camera.

[0010] The control module is communicatively connected to the camera and the data acquisition module, and is adapted to control the operating status of the camera and the data acquisition module.

[0011] Optionally, the grid bars are unevenly arranged to divide the internal passage of the fence into multiple fish passage units of different sizes.

[0012] Optionally, the grid strip is equipped with a fill light, which is adapted to assist the camera in taking pictures. The fill light is communicatively connected to the control module, and the control module is adapted to control the operating status of the fill light.

[0013] Optionally, the camera is mounted inside the grille, and the grille is at least partially made of a transparent material for the camera to capture images.

[0014] Optionally, the fish passage monitoring device is also equipped with a cleaning system, which includes a drive component and a cleaning brush. The drive component is connected to the fence or the grid bar, and the output end of the drive component is connected to the cleaning brush. The drive component is adapted to drive the cleaning brush to clean the outer wall of the grid bar. The drive component is communicatively connected to the control module, and the control module is adapted to control the operating status of the drive component.

[0015] Optionally, the drive assembly includes a telescopic structure connected to the cleaning brush, the telescopic structure having a retracted state that prevents the cleaning system from obstructing the camera's field of view and an extended state that facilitates cleaning.

[0016] Optionally, the fish passage monitoring device further includes an infrared counting module, which is communicatively connected to the data acquisition module and the control module. The infrared counting module includes an infrared grating and a receiver arranged opposite each other. The infrared grating and the receiver are fixed to the inner wall of the enclosure. The data acquisition module is adapted to receive the grating signal generated by fish blocking the view. The control module is adapted to control the operating status of the infrared counting module.

[0017] And / or the fish passage monitoring device further includes a hydrological monitoring module, which is communicatively connected to the data acquisition module and the control module. The data acquisition module is adapted to acquire hydrological information data obtained by the hydrological monitoring module, and the control module is adapted to control the operating status of the hydrological monitoring module.

[0018] Optionally, the fish passage monitoring device further includes a fish attracting device, which is adapted to be placed at the entrance of the fish passage to attract migratory fish into the fish passage. The fish attracting device is communicatively connected to the control module, and the control module is adapted to control the operating status of the fish attracting device.

[0019] Optionally, the fish passage monitoring device further includes a wireless sonar probe, which is adapted to be placed at the entrance of the fish passage. The wireless sonar probe is communicatively connected to the data acquisition module and the control module. The data acquisition module is adapted to acquire the sound wave signal emitted by the wireless sonar probe, and the control module is adapted to control the operating status of the wireless sonar probe.

[0020] Optionally, the fish passage monitoring device further includes a host computer monitoring system, which is communicatively connected to the data acquisition module and the control module. The host computer monitoring system is adapted to process the data acquired by the data acquisition module, and the control module is adapted to control the operating status of the host computer monitoring system. The host computer monitoring system includes a data display module, which is adapted to display the images captured by the camera.

[0021] And / or the host computer monitoring system includes a fish recognition module, which is adapted to analyze and process images captured by the camera, including fish recognition of the images.

[0022] The present invention has the following advantages:

[0023] 1. The fish passage monitoring device provided by this invention comprises a fence fixedly connected to a fishway, the inner wall of which forms a passageway for migratory fish to pass through. Several gratings are arranged inside the fence, dividing the internal passageway into multiple fish passage units. Cameras are connected to the gratings to capture images of each fish passage unit. The division of the internal passageway into multiple fish passage units prevents migratory fish from overlapping in the camera's field of view. Migratory fish are less likely to swim back and forth within the narrower fish passage units, avoiding repeated imaging of the same migratory fish and thus preventing interference with subsequent statistical and identification results. Even in turbid water conditions, migratory fish retain a certain degree of identifiability, improving the image quality acquired by the camera and facilitating subsequent statistical analysis and identification of fish.

[0024] 2. The fish passage monitoring device provided by the present invention has unevenly arranged grid bars, which divides the internal passage of the enclosure into multiple fish passage units of different sizes. This facilitates the acquisition of high-quality images by the camera, ensures that larger fish can pass through the fish passage smoothly, and prevents debris from accumulating at the entrance of the fish passage unit after entering the fish passage, thus promoting the stable operation of the fish passage monitoring device.

[0025] 3. The fish monitoring device provided by the present invention has a camera installed inside the grid, which makes it less likely for the camera to collide with passing fish, ensuring stable operation of the camera. At the same time, it reduces the blind spot of the camera's field of view, making the images captured by the camera more valuable for reference.

[0026] 4. The fish monitoring device provided by the present invention has a cleaning system that can prevent the grid bars from being contaminated, thus affecting the shooting quality of the camera and enabling the camera to provide clear images for a long time.

[0027] 5. The fish monitoring device provided by the present invention includes a telescopic structure in the driving component. The telescopic structure is connected to the cleaning brush, which can provide a larger cleaning range for the cleaning brush. At the same time, when the cleaning system is not in use, it can avoid obstructing the camera's field of view and ensure the camera's shooting quality.

[0028] 6. The fish monitoring device provided by this invention can perform a preliminary count of the number of fish by using an infrared grating after the fish enter the device's range. It can further analyze the species and body proportions of migratory fish by combining the images captured by the camera. It can also use a deep learning neural network to simulate human neurons to learn and classify fish images, use a preset model to detect and identify fish, and use an image labeling module to label fish image samples to continuously expand the fish sample library and more accurately achieve intelligent identification of fish species. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the fish monitoring device according to an embodiment of the present invention;

[0031] Figure 2 This is a top view of the fish monitoring device according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the infrared counting module in the fish monitoring device according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the cleaning system in the fish monitoring device according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the arrangement of the grid bars in the fish monitoring device according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Fishway; 11. Fence; 21. Crossbeam; 22. Fence bar; 23. Camera; 24. Supplemental lighting; 30. Cleaning system; 31. Electric push rod; 32. Mounting plate; 33. Motor; 34. Cleaning brush; 40. Infrared counting module; 41. Infrared grating; 42. Receiver; 50. Water condition monitoring module; 51. Flow velocity sensor; 52. Flow meter; 53. Temperature sensor; 61. Fish attractant; 62. Wireless sonar probe. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] Example

[0042] refer to Figures 1-5 The fish passage monitoring device provided in this embodiment of the invention includes:

[0043] The fence 11 has an inner wall that forms a passage suitable for migratory fish to pass through, and the fence 11 is suitable for being fixed inside the fishway 10;

[0044] Several bars 22 are arranged inside the fence 11, which are suitable for dividing the internal passage of the fence 11 into multiple fish passage units;

[0045] Camera 23, connected to the grid 22, is suitable for filming each fish passage unit;

[0046] The data acquisition module is communicatively connected to the camera 23 and is suitable for acquiring video information captured by the camera 23;

[0047] The control module is communicatively connected to the camera 23 and the data acquisition module, and is suitable for controlling the operating status of the camera 23 and the data acquisition module.

[0048] In this embodiment, the fence 11 is fixedly connected to the fishway 10, and its inner wall forms a passageway for migratory fish to pass through. Several gratings 22 are arranged inside the fence 11, dividing the internal passageway of the fence 11 into multiple fish passage units. The camera is fixedly and rotatably connected to the gratings, allowing it to capture images of each fish passage unit. The division of the internal passageway of the fence 11 into multiple fish passage units makes it less likely for migratory fish to overlap in the field of view of the camera 23. Migratory fish are less likely to swim back and forth within the narrower fish passage units, preventing the camera 23 from repeatedly capturing the same migratory fish and affecting subsequent statistical and identification results. Even under turbid water conditions, migratory fish still have a certain degree of recognizability, improving the image quality acquired by the camera 23 and facilitating subsequent statistical and identification of fish.

[0049] In this embodiment, the size of the space occupied by the fence 11 in the fishway 10 is not specifically limited. As one implementation, the cross-sectional area of ​​the fence 11 only occupies a part of the cross-sectional area of ​​the fishway segment. As another implementation, the fence 11 occupies the entire space of the fishway segment, and the fence 11 is fixedly connected to the inner wall of the fishway 10.

[0050] In this embodiment, the shape of the fish passage enclosed by the fence 11 is not specifically limited. As one implementation method, the cross-section of the fish passage is square.

[0051] In this embodiment, the number of grid bars 22 is not specifically limited, but depends on the overall width of the fish passage 10, as long as fish can pass through the fish passage unit smoothly.

[0052] In this embodiment, the arrangement of the grid bars 22 is not specifically limited. As one implementation, the grid bars 22 are arranged at equal intervals, ensuring that the width of each fish passage unit is consistent. As another implementation, the grid bars 22 are arranged unevenly, dividing the internal passage of the fence 11 into multiple fish passage units of varying sizes. Specifically, refer to... Figure 1 , Figure 2 and Figure 5 The enclosure 11 has four irregularly arranged bars 22, which divide a section of the passage within the enclosure 11 into three fish passage units of varying widths. Figure 5 The rightmost fish-passing unit has the largest width.

[0053] In this embodiment, the grid bars 22 are unevenly arranged, dividing the internal channel of the fence 11 into multiple fish passage units of different sizes. This facilitates the camera 23 to acquire high-quality images while ensuring that larger fish can pass through the fish passage 10 smoothly. At the same time, it prevents debris from accumulating at the entrance of the fish passage unit after entering the fish passage 10, which is conducive to the stable operation of the fish passage monitoring device.

[0054] In a preferred embodiment, the fence strip 22 can be pre-installed and fixed on a crossbeam 21, and then the crossbeam 21 can be fixed to the inner wall of the fence 11.

[0055] In this embodiment, the arrangement and number of cameras 23 are not specifically limited, as long as they can monitor all fish passage units. The cameras 23 can be installed on individual grilles 22, or each grille 22 can have a camera 23 installed on it. As one specific implementation method, refer to... Figure 5 , Figure 5 Each of the grid bars 22 is equipped with three cameras 23 to monitor the fish passage unit on one side. The fish passage unit on the far right has a larger width, so the cameras 23 installed on the two adjacent grid bars 22 can be used to capture it, which is beneficial for comparing and analyzing the captured video information later and improving the reliability of the data.

[0056] In one implementation, the camera 23 is connected to the data acquisition module via optical fiber. The data acquisition module receives the original video of the fish transmitted by the camera 23 and performs noise reduction preprocessing on the original video.

[0057] In this embodiment, the connection position between the camera 23 and the grid 22 is not specifically limited. In one embodiment, the camera 23 is fixed to the outer wall of the grid 22; in another embodiment, the camera 23 is installed inside the grid 22, and the grid 22 is at least partially made of transparent material to facilitate the camera 23 to take pictures. In this embodiment, the camera 23 and the grid 22 can be fixedly connected or rotatably connected to facilitate the adjustment of the monitoring angle.

[0058] In this embodiment, the camera 23 is installed inside the grid 22, which makes it less likely for the camera 23 to collide with passing fish, ensuring that the camera 23 can work stably. At the same time, it reduces the blind spot of the camera 23, making the images captured by the camera 23 have higher reference value.

[0059] As is easily understood, the grille 22 is at least partially made of transparent material so that the internal camera 23 can take pictures normally. The transparent material can be plexiglass or inorganic glass, and no specific limitation is made here.

[0060] In a preferred embodiment, the grid 22 is equipped with a supplementary light 24, which is adapted to assist the camera 23 in taking pictures, and the supplementary light 24 is communicatively connected to the control module.

[0061] In this embodiment, the supplementary light 24 can provide illumination for the camera 23. The supplementary light 24 can be disposed on the outer wall of the grid 22 or on the inner wall of the grid 22. For details, please refer to [reference needed]. Figure 5 The supplementary light 24 is set on the inner wall of the grid 22, and the illumination direction is consistent with the shooting direction of the camera 23.

[0062] Based on the above embodiments, in a preferred embodiment, the fish passage monitoring device is further equipped with a cleaning system 30. The cleaning system 30 includes a drive component and a cleaning brush 34. The drive component is connected to the fence 11 or the grid 22. The output end of the drive component is connected to the cleaning brush 34. The drive component is adapted to drive the cleaning brush 34 to clean the outer wall of the grid 22. The drive component is communicatively connected to the control module. The control module is adapted to control the operating status of the drive component.

[0063] In this embodiment, the cleaning system 30 can prevent the grid strip 22 from being contaminated, which would affect the shooting quality of the camera 23, and enable the camera 23 to provide clear shooting images for a long time.

[0064] Based on the above embodiments, in a preferred embodiment, the drive component includes a telescopic structure connected to the cleaning brush 34. The telescopic structure has a retracted state that prevents the cleaning system 30 from obstructing the view of the camera 23 and an extended state that facilitates cleaning.

[0065] In this embodiment, the drive component includes a telescopic structure that is connected to the cleaning brush 34. This telescopic structure provides a larger cleaning range for the cleaning brush 34 and avoids obstructing the field of view of the camera 23 when the cleaning system is not in use, thus ensuring the shooting quality of the camera 23.

[0066] As one specific implementation method, refer to Figure 4 The drive assembly includes an electric push rod 31 and a motor 33. The housing of the electric push rod 31 is fixed to the fence 11 or the grid 22. The push rod of the electric push rod 31 is connected to the motor 33. The output shaft of the motor 33 is fixedly connected to the cleaning brush 34. In this embodiment, the push rod of the electric push rod 31 can adjust the position of the cleaning brush 34 by extension and retraction. The output shaft of the motor 33 can drive the cleaning brush 34 to clean the outer wall of the grid 22 by rotation.

[0067] Further reference Figure 4The push rod of the electric push rod 31 is fixed to one side of the mounting plate 32, and the motor 33 is fixed to the other side of the mounting plate 32. The push rod of the electric push rod 31 drives the mounting plate 32 to move, thereby realizing the adjustment of the position of all cleaning brushes 34 on the mounting plate 32. In addition, the number of electric push rods 31 and the number of cleaning brushes 34 do not need to correspond one-to-one, which reduces product cost.

[0068] In a preferred embodiment, the fish passage monitoring device further includes an infrared counting module 40, which is communicatively connected to the data acquisition module and the control module. Figure 3 The infrared counting module 40 includes an infrared grating 41 and a receiver 42 arranged facing each other. The infrared grating 41 and the receiver 42 are fixed to the inner wall of the enclosure 11. The data acquisition module is adapted to receive the grating signal generated by fish blocking the view, and the control module is adapted to control the operating status of the infrared counting module 40. Specifically, the infrared grating 41 adopts the LGS100 grating.

[0069] In this embodiment, the infrared grating 41 and the receiver 42 are installed on the inner wall of the fence 11 in a one-to-one correspondence. The infrared grating 41 emits infrared light to the receiver 42. The data acquisition module receives the grating signal generated by the fish blocking the light and obtains information such as the number of fish based on the grating signal.

[0070] In a preferred embodiment, the fish passage monitoring device further includes a hydrological monitoring module 50, which is communicatively connected to a data acquisition module and a control module. The data acquisition module is adapted to acquire hydrological information data obtained by the hydrological monitoring module 50, and the control module is adapted to control the operating status of the hydrological monitoring module 50.

[0071] In this embodiment, the structure of the water condition monitoring module 50 is not specifically limited. As one embodiment, the water condition monitoring module 50 includes a flow velocity sensor 51, a flow meter 52, and a temperature sensor 53 installed inside the fence 11. The data acquisition module is adapted to acquire the water flow velocity, flow rate, and temperature obtained by the water condition monitoring module 50.

[0072] In a preferred embodiment, the fish passage monitoring device also includes a fish attracting device 61, which is adapted to be placed at the entrance of the fish passage 10 to attract migratory fish into the fish passage 10. The fish attracting device 61 is communicatively connected to the control module, which is adapted to control the operating status of the fish attracting device 61.

[0073] In this embodiment, the fish-attracting device 61 is arranged at the entrance of the fishway 10, which can guide the fish into the fishway 10, enhance the construction value of the fishway 10, and improve the monitoring efficiency of the fish passage monitoring device.

[0074] In this embodiment, the structure of the fish-attracting device 61 is not specifically limited. In one embodiment, the fish-attracting device 61 includes a water supply pipe and a water pump. The outlet of the water supply pipe is located at the entrance of the fish passage 10. The water supply pipe is connected to the water pump, and the water pump is adapted to pump water to the water supply pipe to attract fish into the fish passage 10 by utilizing the fish's upstream behavior. In another embodiment, the fish-attracting device 61 includes a fish-attracting light strip arranged at the entrance of the fish passage 10.

[0075] Based on the above embodiments, in a preferred embodiment, the fish passage monitoring device further includes a wireless sonar probe 62, which is adapted to be arranged at the entrance of the fish passage 10. The wireless sonar probe 62 is communicatively connected to a data acquisition module and a control module. The data acquisition module is adapted to acquire the sound wave signals emitted by the wireless sonar probe 62, and the control module is adapted to control the operating status of the wireless sonar probe 62.

[0076] In this embodiment, the wireless sonar probe 62 is arranged near the entrance of the fishway 10 and can emit sound wave signals. The data acquisition module collects the sound wave signals fed back after contacting the object in the water, determines whether there is a school of fish nearby, and if there is a school of fish nearby, the fish-attracting device 61 is activated through the control module, thus saving energy.

[0077] In a preferred embodiment, the fish passage monitoring device further includes a host computer monitoring system, which is communicatively connected to the data acquisition module and the control module. The data acquisition module converts the received data into digital signals and transmits them to the host computer monitoring system, which processes the data. The control module is adapted to control the operating status of the host computer monitoring system.

[0078] In a preferred embodiment, the host computer monitoring system includes a data display module adapted to display images captured by camera 23. Specifically, the data display module includes a display, and there can be multiple data display modules. For example, one data display module can be set up at each fishway monitoring station to display data for each fishway monitoring point (i.e., the fishway section in fishway 10 equipped with a fish passage monitoring device), or only one data display module can be set up to display data for all fishway monitoring points.

[0079] The data display module can display the captured images in real time. When the fish monitoring device is equipped with the water condition monitoring module 50, the data display module can also display hydrological information data in real time. The data display module displays water condition information in daily, weekly and monthly nodes. The hydrological information data includes flow rate, flow velocity and water temperature.

[0080] When the fish monitoring device is equipped with an infrared counting module 40, the host computer monitoring system can also process the grating signal acquired by the data acquisition module to obtain the number of fish passing through within the days, weeks, and months, and display it through the data display module.

[0081] In a preferred embodiment, the host computer monitoring system includes a fish identification module, which is adapted to analyze and process images captured by the camera 23, including fish identification within the images. When the fish monitoring device is equipped with an infrared counting module 40, the host computer monitoring system can also count the number of fish.

[0082] Specifically, the fish recognition module includes an image sample acquisition module, an image label acquisition module, a fish dataset composition module, and a training module. The image sample acquisition module extracts frames from fish videos to obtain several image frames, and collects image samples of various fish species, including images of fish posture features, fish color and texture features, fish local unique features, and fish body length ratio features. The image label acquisition module labels the image samples (specifically, Label1Img can be used) to obtain image labels for various fish species. The fish dataset composition module consists of image samples and image labels. The training module randomly divides the fish dataset into a training set and a test set, uses the training set to train a preset model (specifically, a YOLOv3 network model), and uses the test set to verify the trained preset model, obtaining a trained preset model. The trained preset model is then used to perform fish recognition on the images acquired by camera 23, and the number of various fish species that have been identified is counted.

[0083] As one implementation, the host computer monitoring system also includes a storage device. Fish monitoring videos can be uploaded to the cloud with time tags or directly saved to the storage device. The fish monitoring videos include fish videos acquired by camera 23 and hydrological information data acquired by the hydrological monitoring module 50 at the same time.

[0084] In one implementation, the data acquisition module, the host computer monitoring system, and the control module can be integrated into a single structure. The data acquisition module can collect fish videos, grating signals, hydrological information data, and acoustic information, and process and transform the data before transmitting it to the host computer monitoring system. The host computer monitoring system can then analyze and process the aforementioned data.

[0085] Based on the above specific implementation methods, the working principle of the fish monitoring device in this embodiment is as follows:

[0086] The enclosure 11 of the fish passage monitoring device is fixedly connected to the fishway 10. The inner wall forms a passage that allows migratory fish to pass through. Several gratings 22 are arranged inside the enclosure 11, dividing the internal passage of the enclosure 11 into multiple fish passage units. Cameras 23 are connected to the gratings 22 to capture images of each fish passage unit. A cleaning system 30 is installed on the outside of the gratings 22 to ensure the image quality of the cameras 23. A wireless sonar probe 62 is installed at the entrance of the fishway 10 to determine the location of the fish school. When a fish school is nearby, the control module opens the fish-attracting device 61 to attract the fish school into the fishway 10. After the fish school enters the device range, the infrared grating 41 is used to perform a preliminary count of the number of fish. Combined with the images captured by the cameras 23, the specific fish species and body proportions are further analyzed. A deep learning neural network is used to simulate human neurons to learn and classify fish images. The YOLOv3 network model is used to detect and identify fish, and Label1Img is used to label fish image samples to continuously expand the fish sample library and more accurately achieve intelligent real-time identification of fish species.

[0087] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A fish passage monitoring device, characterized in that, include: A fence (11) with an inner wall forming a passage suitable for migratory fish to pass through, the fence (11) being adapted to be fixed inside the fishway (10); Several bars (22) are arranged inside the fence (11) to divide the internal passage of the fence (11) into multiple fish passage units; A camera (23) is connected to the grid (22) and is adapted to capture images of the fish passage unit; The data acquisition module is communicatively connected to the camera (23) and is adapted to acquire the video information captured by the camera (23); The control module is communicatively connected to the camera (23) and the data acquisition module, and is adapted to control the operating status of the camera (23) and the data acquisition module; The bars (22) are unevenly arranged to divide the internal passage of the fence (11) into multiple fish passage units of different sizes, with the rightmost fish passage unit having the largest width. The camera (23) is installed inside the grid (22), and the grid (22) is made of transparent material for the camera (23) to take pictures; The camera (23) can monitor the fish passage unit on the adjacent side; The rightmost fish-passing unit has the largest width, so the cameras (23) installed on the two adjacent grid bars (22) are used to take pictures of the rightmost fish-passing unit, which is beneficial for the comparison and analysis of the captured video information in the later stage and improves the credibility of the data. The camera (23) is rotatably connected to the grid (22) to facilitate adjustment of the monitoring angle.

2. The fish passage monitoring device according to claim 1, characterized in that, The grid strip (22) is equipped with a fill light (24), which is suitable for assisting the camera (23) in taking pictures. The fill light (24) is communicatively connected to the control module, which is suitable for controlling the operating status of the fill light (24).

3. The fish passage monitoring device according to claim 1, characterized in that, The fish passage monitoring device is also equipped with a cleaning system (30), which includes a drive component and a cleaning brush (34). The drive component is connected to the fence (11) or the grid (22), and the output end of the drive component is connected to the cleaning brush (34). The drive component is adapted to drive the cleaning brush (34) to clean the outer wall of the grid (22). The drive component is communicatively connected to the control module, and the control module is adapted to control the operating status of the drive component.

4. The fish passage monitoring device according to claim 3, characterized in that, The drive assembly includes a telescopic structure connected to the cleaning brush (34), the telescopic structure having a retracted state that prevents the cleaning system (30) from obstructing the view of the camera (23) and an extended state that facilitates cleaning.

5. The fish passage monitoring device according to any one of claims 1-4, characterized in that, The fish passage monitoring device also includes an infrared counting module (40), which is communicatively connected to the data acquisition module and the control module. The infrared counting module (40) includes an infrared grating (41) and a receiver (42) arranged opposite to each other. The infrared grating (41) and the receiver (42) are fixed to the inner wall of the fence (11). The data acquisition module is adapted to receive the grating signal generated by fish blocking the view. The control module is adapted to control the operating status of the infrared counting module (40). And / or the fish passage monitoring device further includes a hydrological monitoring module (50), which is communicatively connected to the data acquisition module and the control module. The data acquisition module is adapted to acquire hydrological information data obtained by the hydrological monitoring module (50), and the control module is adapted to control the operating status of the hydrological monitoring module (50).

6. The fish passage monitoring device according to any one of claims 1-4, characterized in that, The fish passage monitoring device also includes a fish attracting device (61), which is adapted to be placed at the entrance of the fish passage (10) to attract migratory fish into the fish passage (10). The fish attracting device (61) is communicatively connected to the control module, which is adapted to control the operating status of the fish attracting device (61).

7. The fish passage monitoring device according to claim 6, characterized in that, The fish passage monitoring device also includes a wireless sonar probe (62), which is adapted to be placed at the entrance of the fish passage (10). The wireless sonar probe (62) is communicatively connected to the data acquisition module and the control module. The data acquisition module is adapted to acquire the sound wave signal emitted by the wireless sonar probe (62), and the control module is adapted to control the operating status of the wireless sonar probe (62).

8. The fish passage monitoring device according to claim 7, characterized in that, The fish passage monitoring device also includes a host computer monitoring system, which is communicatively connected to the data acquisition module and the control module. The host computer monitoring system is adapted to process the data acquired by the data acquisition module, and the control module is adapted to control the operating status of the host computer monitoring system. The host computer monitoring system includes a data display module, which is adapted to display the images captured by the camera (23). And / or the host computer monitoring system includes a fish identification module, which is adapted to analyze and process images captured by the camera (23), including fish identification of the images.

Images