Flow field adjusting device and fish attracting system for adjusting flow field of fishway inlet

Abstract

The present application relates to fishway fish luring technical field, disclose a kind of flow field adjusting device and the flow field of adjusting fishway import is lured fish system. Among them, flow field adjusting device includes shell, sliding plate and jet pipe, cavity is opened in shell, first slide rail is equipped in cavity, sliding plate and first slide rail sliding fit connection, drive mechanism is suitable for driving sliding plate to extend cavity or retract into cavity;Multiple jet pipes are spaced apart on sliding plate along the length direction of sliding plate, nozzle and adjusting valve connected with nozzle are equipped on jet pipe;Controller is electrically connected with drive mechanism and drive pump respectively, and drive mechanism and drive pump are controlled by controller according to the detection data of fish detection component.This application controls the size of water flow that jet pipe sprays by controller, so that the river forms the adjusting flow field suitable for migratory fish at fishway import, and makes fish stay in adjusting flow field area for a long time, and then makes fish easily find fishway import, improves the efficiency of fishway import.

Description

Technical Field

[0001] This invention relates to the field of fish passage attraction technology, specifically to a flow field adjustment device and a fish attraction system for adjusting the flow field at the fish passage inlet. Background Technology

[0002] Fishways are channels for fish migration. Remedial measures taken when human activities disrupt these channels typically involve constructing artificial channels on sluice gates or dams to protect fish behavior. The water flow at the fishway entrance must meet two conditions: firstly, it should be suitable for fish to gather, and secondly, it should allow fish to quickly locate the fishway entrance.

[0003] In existing technologies, fish passage inlets are usually located downstream of dams. However, the downstream water flow velocity is relatively high, making it impossible to adjust the flow field conditions at the fish passage inlet in a timely manner according to the changing spatiotemporal characteristics of the water flow. As a result, fish are less likely to sense the fish passage inlet when the water flow conditions change, leading to a decrease in the fish passage's ability to pass fish and a reduction in its efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a flow field adjustment device and a fish-attracting system for adjusting the flow field at the fish passage inlet, so as to solve the problem that the fish passage inlet flow field conditions cannot be adjusted in a timely manner according to the changing spatiotemporal characteristics of the fish passage inlet water flow, resulting in fish not being able to sense the fish passage inlet when the water flow conditions change, thus causing a decrease in the fish passage's fish passage capacity.

[0005] In a first aspect, the present invention provides a flow field adjustment device, comprising:

[0006] The housing has a cavity inside, and a first slide rail, a drive mechanism and a drive pump are provided in the cavity. The first slide rail is arranged along the length of the housing.

[0007] A sliding plate is slidably connected to the first slide rail, and the driving mechanism is adapted to drive the sliding plate to extend out of the cavity or retract into the cavity;

[0008] The jet tubes are provided in multiple locations, and the multiple jet tubes are spaced apart on the sliding plate along the length direction of the sliding plate. Each jet tube is provided with a nozzle and a regulating valve connected to the nozzle.

[0009] The inlet pipe is connected to the jet pipe via the drive pump;

[0010] A fish detection component is disposed on the sliding plate;

[0011] The controller is electrically connected to the fish detection component and is used to feed back the detection data of the fish detection component to the controller. The controller is electrically connected to the drive mechanism and the drive pump respectively, and the controller controls the drive mechanism and the drive pump according to the detection data of the fish detection component.

[0012] Beneficial effects: During fish migration, the controller controls the drive mechanism to slide the sliding plate along the first slide rail, causing the sliding plate to extend out of the cavity. The fish detection component and jet pipe on the sliding plate enter the river channel. The fish detection component detects various parameters of the fish in the river channel and feeds the detection data back to the controller. The controller controls the drive pump to spray water from the nozzle of the jet pipe through the inlet pipe. The controller controls the size of the water flow sprayed from the jet pipe, so that a regulating flow field suitable for migrating fish is formed at the fish passage inlet in the river channel. This allows the fish to stay in the regulating flow field area for a longer period of time, making it easier for the fish to find the fish passage inlet and improving the fish passage efficiency at the fish passage inlet.

[0013] In one optional embodiment, the sliding plate is provided in two sets, the two sets of sliding plates are symmetrically arranged, the jet tube is disposed between the two sets of sliding plates, and the two ends of the jet tube are respectively disposed on the two sets of sliding plates.

[0014] Beneficial effects: By setting two sets of sliding plates and placing the jet pipe between the two sets of sliding plates, the jet pipe is firmly fixed, preventing damage to the jet pipe under the impact of river water flow and ensuring that the jet pipe can cope with relatively rapid water flow in the river.

[0015] In one optional embodiment, the jet tube is rotatably mounted on the sliding plate, and a rotating mechanism is provided in the sliding plate corresponding to the jet tube. The rotating mechanism is connected to the jet tube and is adapted to drive the jet tube to rotate about its axial direction.

[0016] Beneficial effects: By driving the jet tube to rotate through the rotating mechanism, the direction of the jet tube nozzle is adjusted, thereby adjusting the direction of the water flow sprayed from the nozzle. This makes the regulating flow field formed at the fishway inlet more suitable for fish to stay, allowing fish to stay in the regulating flow field area for a longer period of time. This makes it easier for fish to find the fishway inlet and improves the fish passage efficiency at the fishway inlet.

[0017] In one optional embodiment, the jet tube is provided with a plurality of nozzles, which are spaced apart along the axial direction of the jet tube.

[0018] Beneficial effects: By setting multiple nozzles on a jet pipe, each jet pipe can spray enough water from the nozzle, thereby adjusting and regulating the water flow in the flow field. This makes the flow field more suitable for fish to stay in, allowing fish to stay in the flow field area for a longer period of time. This makes it easier for fish to find the fish passage entrance and improves the fish passage entrance's efficiency.

[0019] In one alternative embodiment, with the sliding plate extending out of the cavity, the fish detection component is located at the end of the sliding plate away from the housing.

[0020] Beneficial effects: By placing the fish detection component at the end furthest from the shell, the end of the sliding plate, when extended from the cavity, prioritizes detecting fish information. This ensures that the fish detection component can identify fish information around the sliding plate to the greatest extent. The controller then controls the movement of the sliding plate and the spray volume and speed of the jet nozzle based on the data detected by the fish detection component. This creates a suitable regulating flow field for migrating fish at the fish passage inlet, allowing fish to stay in the regulating flow field area for a longer period. Consequently, fish can easily detect the fish passage inlet, improving the fish passage efficiency.

[0021] In one optional embodiment, the end of the sliding plate is provided with a guide rod, the two ends of the guide rod are respectively provided on two sets of the sliding plates, and a second slide rail is provided on the guide rod along its axial direction. The fish detection component is slidably connected to the second slide rail.

[0022] Beneficial effects: By movably mounting the fish detection component on the guide rod, the position of the fish detection component on the guide rod can be adjusted according to the river water level, ensuring the accuracy of the detection data acquired by the fish detection component and preventing the fish detection component from being exposed on the water surface when the river water level is low, thus preventing the fish detection component from failing to detect.

[0023] In one optional embodiment, the fish detection component includes a fish finder and a video detector, the fish finder and the video detector being spaced apart on the guide rod;

[0024] The flow field adjustment device also includes an image processor, and the fish detection component is electrically connected to the image processor.

[0025] Beneficial effects: Fish finders can be used to detect fish schools in rivers. Staff can visually and accurately observe the fish's behavior via video detectors in the background, facilitating the control of the sliding plate and the spray volume and speed of the jet nozzles. Image processors can process and analyze the detected fish, identify fish species, and adjust the flow field accordingly to retain different fish species.

[0026] In one optional embodiment, a barrier net is provided on one side of the sliding plate, and the bottom and top of the barrier net are respectively connected to two sets of the sliding plates. The barrier net is located on one side of the jet tube, and the nozzle is positioned away from the barrier net.

[0027] Beneficial effects: By setting the barrier net upstream of the jet pipe, the barrier net can intercept floating objects and garbage upstream of the jet pipe, ensuring stable operation of the nozzle and preventing floating objects and garbage from clogging the nozzle under the impact of river water flow.

[0028] In one alternative embodiment, a gate is provided at the opening of the housing.

[0029] Beneficial effects: After the fish migration season, the sliding plate can be retracted into the cavity and the gate at the shell opening can be closed to prevent the sliding plate, jet tube and other mechanisms from being immersed in water for a long time, thus extending the service life of the flow field adjustment device.

[0030] Secondly, the present invention also provides a fish-attracting system for adjusting the flow field at the fish passage inlet, comprising:

[0031] The flow field detection device is provided in multiple locations, with the multiple flow field detection devices spaced apart within the river channel;

[0032] A flow field adjustment device is provided at the fish passage inlet. The controller is electrically connected to the flow field detection device, and the controller controls the drive mechanism and drive pump according to the detection data of the flow field detection device.

[0033] Beneficial effects: By setting up multiple flow field detection devices in the river channel, the detection data of the flow field detection devices is transmitted to the controller. The controller controls the extension and retraction of the sliding plate in the cavity, as well as the water spray volume and spray speed of the nozzle of the jet pipe, based on the detection data of the flow field detection devices. By controlling the size of the water flow sprayed from the jet pipe, the river channel forms a regulating flow field suitable for migratory fish at the fishway inlet, allowing fish to stay in the regulating flow field area for a longer period of time. This makes it easier for fish to find the fishway inlet and improves the fish passage efficiency at the fishway inlet.

[0034] In one optional embodiment, the flow field detection device includes a water level gauge, a flow velocity meter, and a direction meter, wherein the water level gauge, the flow velocity meter, and the direction meter are arranged at intervals.

[0035] Beneficial effects: Water level gauges are used to detect the water level in rivers, flow velocity gauges are used to detect the flow velocity in rivers, and direction gauges are used to measure the direction of water flow in rivers. Attached Figure Description

[0036] 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.

[0037] Figure 1 This is a schematic diagram of the structure of a flow field adjustment device according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1Schematic diagram of the concealed jet tube;

[0039] Figure 3 for Figure 1 A schematic diagram of the structure in which the jet tube and the rotating mechanism work together;

[0040] Figure 4 This is a schematic diagram of another fish-attracting system for adjusting the flow field at the fish passage in an embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Housing; 101. First slide rail; 102. Drive pump; 2. Sliding plate; 201. Rotating mechanism; 3. Jet pipe; 301. Nozzle; 302. Regulating valve; 4. Fish detection component; 5. Guide rod; 6. Barrier net; 7. Gate; 8. Flow field detection device; 9. River channel; 10. Fishway inlet; 11. Fishway wing wall; 12. Regulating flow field; 13. Fish attracting light; 14. Acoustic vibration device; 15. Video monitor. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

[0044] In related technologies, fish passage inlets are usually located downstream of dams. However, the downstream water flow velocity is relatively high, making it impossible to adjust the flow field conditions at the fish passage inlet in a timely manner according to the changing spatiotemporal characteristics of the water flow. As a result, fish are less likely to sense the fish passage inlet when the water flow conditions change, causing a decrease in the fish passage's ability to pass fish and a reduction in the fish passage's efficiency.

[0045] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0046] According to an embodiment of the present invention, in one aspect, such as Figure 1 and Figure 4 As shown, a flow field adjustment device is provided, including: a housing 1, a sliding plate 2, a jet pipe 3, a water inlet pipe, a fish detection component 4, and a controller.

[0047] Specifically, such as Figure 1 As shown, a cavity is formed inside the housing 1, and an opening is formed on the housing 1, which communicates with the cavity. A first slide rail 101 is provided inside the cavity, and the first slide rail 101 is arranged along the length of the housing 1. A drive mechanism and a drive pump 102 are also provided inside the cavity.

[0048] Specifically, such as Figure 1 As shown, the sliding plate 2 is slidably connected to the first slide rail 101, and the driving mechanism is connected to the sliding plate 2. The driving mechanism is used to drive the sliding plate 2 to move along the direction of the first slide rail 101, so that the sliding plate 2 extends out of the cavity or retracts into the cavity.

[0049] Specifically, such as Figure 1 As shown, multiple jet pipes 3 are provided, and the multiple jet pipes 3 are spaced apart on the sliding plate 2 along the length direction of the sliding plate 2. Among them, the jet pipe 3 is provided with a nozzle 301 and a regulating valve 302. The regulating valve 302 is connected to the nozzle 301 and is used to adjust the water spray volume and water spray speed of the nozzle 301.

[0050] Specifically, the inlet pipe is connected to the jet pipe 3 via the drive pump 102. The drive pump 102 pumps water into the inlet pipe, causing the water pumped into the inlet pipe to be ejected from the nozzle 301 of the jet pipe 3. The inlet pipe can be directly connected to the river channel 9, and can draw water from the river channel 9.

[0051] Specifically, such as Figure 1 and Figure 4 As shown, the fish detection component 4 is installed on the sliding plate 2, and fish in the river channel 9 are detected by the fish detection component 4.

[0052] Specifically, the controller is electrically connected to the fish detection component 4 and is used to feed back the detection data of the fish detection component 4 to the controller. The controller is electrically connected to the drive mechanism and the drive pump 102 respectively. The controller controls the drive mechanism and the drive pump 102 according to the detection data of the fish detection component 4. That is, the controller can control the extension and retraction of the sliding plate 2 in the cavity. The controller can also control the water spray volume and spray speed of the nozzle 301 of the jet pipe 3.

[0053] In this flow field adjustment device, when fish migrate, the controller controls the drive mechanism to make the sliding plate 2 slide along the direction of the first slide rail 101, so that the sliding plate 2 extends out of the cavity. The fish detection component 4 and the jet pipe 3 on the sliding plate 2 enter the river channel 9. The fish detection component 4 detects various parameters of the fish in the river channel 9 and feeds the detection data back to the controller. The controller controls the drive pump 102 to make the water in the inlet pipe spray out from the nozzle 301 of the jet pipe 3. The controller controls the size of the water flow sprayed out by the jet pipe 3, so that the river channel 9 forms a suitable flow field 12 for migrating fish at the fish passage inlet 10, allowing the fish to stay in the flow field 12 area for a long time, thereby making it easier for the fish to find the fish passage inlet 10 and improving the fish passage efficiency of the fish passage inlet 10.

[0054] The shell 1 can be configured as a wall with a cavity inside, or the shell 1 can be made of materials such as steel plate. No specific limitation is made again. The specific implementation method depends on the specific situation.

[0055] Specifically, the controller is electrically connected to the regulating valve 302. The controller controls the regulating valve 302, which in turn controls the size of the water flow ejected from the nozzle 301 of the jet pipe 3, thereby regulating the water flow in the regulating flow field 12.

[0056] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, there are two sets of sliding plates 2, symmetrically arranged. Multiple jet tubes 3 are positioned between the two sets of sliding plates 2, with both ends of the jet tubes 3 attached to the two sets of sliding plates 2. Essentially, one set of sliding plates 2 is located at the bottom, and the other set is located at the top, with the two sets of sliding plates 2 facing each other. One end of each sliding plate 2 is attached to the bottom sliding plate 2, and the other end is attached to the top sliding plate 2. By using two sets of sliding plates 2, the jet tubes 3 are securely fixed between them, preventing damage from the impact of the river flow 9 and ensuring that the jet tubes 3 can cope with the relatively rapid current in the river 9.

[0057] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the jet pipe 3 is rotatably mounted on the sliding plate 2. A rotating mechanism 201 is provided within the sliding plate 2 corresponding to the jet pipe 3. The rotating mechanism 201 is connected to the jet pipe 3 and drives the jet pipe 3 to rotate around its axial direction. By driving the jet pipe 3 to rotate through the rotating mechanism 201, the direction of the nozzle 301 of the jet pipe 3 is adjusted, thereby adjusting the direction of the water flow ejected from the nozzle 301. This makes the regulating flow field 12 formed at the fish passage inlet 10 in the river channel 9 more suitable for fish to stay, allowing fish to stay in the regulating flow field 12 area for a longer period. This makes it easier for fish to find the fish passage inlet 10, improving the fish passage efficiency of the fish passage inlet 10.

[0058] In one specific embodiment, a rotating groove can be provided on the sliding plate 2, and the two ends of the jet tube 3 are respectively disposed in the rotating groove. The jet tube 3 is driven to rotate in the rotating groove by the rotating mechanism 201. The rotating mechanism 201 can be provided as one, and one rotating mechanism 201 can drive multiple jet tubes 3 to rotate at the same time, or multiple rotating mechanisms 201 can be provided, and multiple rotating mechanisms 201 can drive each jet tube 3 to rotate respectively. The specific setting method is not limited here, and can be set according to actual needs.

[0059] In one embodiment, such as Figure 1 and Figure 4As shown, the jet pipe 3 is provided with multiple nozzles 301, which are spaced apart along the axial direction of the jet pipe 3. By providing multiple nozzles 301 on one jet pipe 3, it is ensured that each jet pipe 3 can spray a sufficient amount of water from the nozzles 301, thereby adjusting the water flow in the regulating flow field 12, making the regulating flow field 12 more suitable for fish to stay, allowing fish to stay in the regulating flow field 12 area for a long time, making it easier for fish to find the fish passage inlet 10, and improving the fish passage efficiency of the fish passage inlet 10.

[0060] In one specific embodiment, one or more rows of nozzles 301 can be arranged along the axial direction of a jet pipe 3. The specific arrangement is not limited here, and can be set according to the actual situation.

[0061] In one embodiment, such as Figure 1 and Figure 4 As shown, with the sliding plate 2 extended out of the cavity, the fish detection component 4 is positioned at the end of the sliding plate 2 away from the housing 1. By positioning the fish detection component 4 at the end away from the housing 1, the end of the sliding plate 2 will preferentially detect fish information when it is extended out of the cavity. This ensures that the fish detection component 4 can identify fish information around the sliding plate 2 to the greatest extent. The controller then controls the movement of the sliding plate 2 and the spray volume and spray speed of the nozzle 301 of the jet pipe 3 based on the data detected by the fish detection component 4. This creates a regulating flow field 12 suitable for migrating fish at the fish passage inlet 10 in the river channel 9, allowing the fish to stay in the regulating flow field 12 area for a long time. This makes it easier for the fish to find the fish passage inlet 10 and improves the fish passage efficiency of the fish passage inlet 10.

[0062] In one embodiment, such as Figure 1 and Figure 4 As shown, a guide rod 5 is provided at the end of the sliding plate 2. The two ends of the guide rod 5 are respectively mounted on two sets of sliding plates 2. A second slide rail is provided on the guide rod 5, and the second slide rail is arranged along the axial direction of the guide rod 5. The fish detection component 4 is slidably connected to the second slide rail, meaning that the fish detection component 4 can move along the axial direction of the guide rod 5. By movably mounting the fish detection component 4 on the guide rod 5, the position of the fish detection component 4 on the guide rod 5 can be adjusted according to the water level of the river channel 9, ensuring the accuracy of the detection data acquired by the fish detection component 4 and preventing the fish detection component 4 from being exposed on the water surface when the water level of the river channel 9 is low, thus preventing the fish detection component 4 from failing to detect.

[0063] In one specific embodiment, a lead screw can be installed on the guide rod 5, and a drive motor can be installed inside the sliding plate 2. The lead screw is connected to the fish detection component 4, and the fish detection component 4 can be moved up and down on the guide rod 5 by driving the lead screw through the drive motor.

[0064] In one embodiment, the fish detection component 4 includes a fish finder and a video detector, wherein the fish finder and the video detector are spaced apart on the guide rod 5. The fish finder can be used to detect fish in the river channel 9, and the staff can observe the status of the fish in the river channel 9 intuitively and accurately through the video detector in the background, which facilitates the staff to control the extension and retraction of the sliding plate 2 and the water spray volume and spray speed of the nozzle 301 of the jet pipe 3.

[0065] The flow field adjustment device also includes an image processor. The fish detection component is electrically connected to the image processor. The image processor can be used to process and analyze the monitored fish, identify the types of fish, and adjust the flow field 12 according to different types of fish so that the flow field 12 can retain different types of fish.

[0066] In one embodiment, such as Figure 2 and Figure 4 As shown, a barrier net 6 is provided on one side of the sliding plate 2. The bottom of the barrier net 6 is connected to the bottom of the sliding plate 2, and the top of the barrier net 6 is connected to the top of the sliding plate 2. The barrier net 6 is located on one side of the jet pipe 3, and the nozzle 301 is positioned away from the barrier net 6. It can be understood that when the sliding plate 2 extends out of the cavity, the water in the river channel 9 flows from upstream to downstream. The water flow first passes through the barrier net 6, and then through the jet pipe 3. The barrier net 6 is located upstream of the jet pipe 3, and the water flow from the nozzle 301 of the jet pipe 3 forms a certain angle with the water flow in the river channel 9, which is less than or equal to 90°. By placing the barrier net 6 upstream of the jet pipe 3, the barrier net 6 intercepts floating objects and garbage upstream of the jet pipe 3, ensuring the stable operation of the nozzle 301 and preventing floating objects and garbage from clogging the nozzle 301 under the impact of the water flow in the river channel 9.

[0067] In one embodiment, such as Figure 2 As shown, a gate 7 is provided at the opening of the shell 1. After the fish migration season, the sliding plate 2 can be retracted into the cavity and the gate 7 at the opening of the shell 1 can be closed to prevent the sliding plate 2, jet pipe 3 and other mechanisms from being immersed in water for a long time, thus extending the service life of the flow field adjustment device.

[0068] According to an embodiment of the present invention, on the other hand, such as Figure 1 and Figure 4 As shown, a fish-attracting system for adjusting the flow field at the fish passage inlet is also provided, including: a flow field detection device 8 and a flow field adjustment device.

[0069] Specifically, such as Figure 4 As shown, there are multiple flow field detection devices 8, which are spaced apart in the river channel 9. The flow field data of the river channel 9 is measured by installing the flow field detection devices 8 in the river channel 9.

[0070] Specifically, the controller is electrically connected to the flow field detection device 8. The controller can control the drive mechanism and the drive pump 102 according to the detection data of the flow field detection device 8. It can be understood that the controller controls the extension and retraction of the sliding plate 2 in the cavity, as well as the water spray volume and spray speed of the nozzle 301 of the jet pipe 3, according to the detection data of the flow field detection device 8.

[0071] The data detected by the flow field detection device 8 can be transmitted to the controller wirelessly.

[0072] This fish-attracting system, which regulates the flow field at the fishway inlet, uses multiple flow field detection devices 8 installed within the river channel 9. The detection data from these devices is transmitted to a controller, which then controls the extension and retraction of the sliding plate 2 within the cavity, as well as the water volume and spray speed of the nozzle 301 of the jet pipe 3, based on the data from the flow field detection devices 8. By controlling the size of the water flow from the jet pipe 3, the system creates a suitable regulating flow field 12 for migratory fish at the fishway inlet 10, allowing fish to stay in the regulating flow field 12 area for an extended period. This makes it easier for fish to find the fishway inlet 10 and improves the fish passage efficiency of the fishway inlet 10.

[0073] In one embodiment, the flow field detection device 8 includes a water level gauge, a flow velocity gauge, and a direction gauge, which are arranged at intervals. The water level gauge is used to detect the water level of the river 9, the flow velocity gauge is used to detect the water flow velocity of the river 9, and the direction gauge is used to measure the water flow direction of the river 9.

[0074] Specifically, such as Figure 4 As shown, a fish-attracting light 13 can be installed at the fish passage inlet 10 to attract fish from the flow field 12 area and improve the fish passage efficiency of the fish passage inlet 10.

[0075] Specifically, such as Figure 4 As shown, an acoustic vibration device 14 can be installed at the fish passage inlet 10 to attract fish from the flow field 12 area into the fish passage inlet 10, thereby improving the fish passage efficiency of the fish passage inlet 10.

[0076] The acoustic vibration device 14 can be arranged 1 to 1.5 meters below the water surface at the fishway inlet 10.

[0077] Specifically, such as Figure 4 As shown, a video monitor 15 can be installed on the fishway wing wall 11 at the fishway inlet 10. The video monitor 15 can be installed on the fishway wing wall 11 1-2m away from the fishway inlet to monitor the number of fish passing through the fishway inlet 10 in real time.

[0078] Among them, the fish-attracting system for regulating the flow field at the fish passage can utilize the previously collected detection data, preprocess the data, construct a convolutional neural network model, upload the preprocessed data to the convolutional neural network model for training, and use the trained convolutional neural network model to detect the new river channel 9, predict the characteristics and changes of the river channel 9 flow, thereby controlling and regulating the flow field 12.

[0079] The working process of the fish-attracting system that adjusts the flow field at the fish passage in this embodiment is described as follows:

[0080] During the fish migration season, the controller controls the drive mechanism to slide the sliding plate 2 along the first slide rail 101, causing the sliding plate 2 to extend out of the cavity. The fish detection component 4 and the jet pipe 3 on the sliding plate 2 enter the river channel 9. The fish detection component 4 detects various parameters of the fish in the river channel 9 and feeds the detection data back to the controller. The controller controls the drive pump 102 to spray water from the nozzle 301 of the jet pipe 3. The controller controls the extension and retraction of the sliding plate 2 in the cavity, as well as the spray volume and spray speed of the nozzle 301 of the jet pipe 3, based on the detection data of the flow field detection device 8. By controlling the size of the water flow sprayed from the jet pipe 3, the controller creates a suitable regulating flow field 12 for migrating fish at the fish passage inlet 10 in the river channel 9, allowing the fish to stay in the regulating flow field 12 area for a long time. This makes it easier for the fish to find the fish passage inlet 10 and improves the fish passage efficiency of the fish passage inlet 10.

[0081] After the fish migration season, the controller controls the sliding plate 2 to retract into the cavity and closes the gate 7 to prevent the sliding plate 2, jet pipe 3 and other mechanisms from being immersed in water for a long time, thus extending the service life of the flow field adjustment device.

[0082] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A flow field regulating device, characterized in that, include: The housing (1) has a cavity inside, and the cavity is provided with a first slide rail (101), a drive mechanism and a drive pump (102). The first slide rail (101) is arranged along the length direction of the housing (1). The sliding plate (2) is slidably connected to the first slide rail (101), and the driving mechanism is adapted to drive the sliding plate (2) to extend out of the cavity or retract into the cavity; A plurality of jet tubes (3) are provided, and the plurality of jet tubes (3) are spaced apart on the sliding plate (2) along the length direction of the sliding plate (2). Each jet tube (3) is provided with a nozzle (301) and a regulating valve (302) connected to the nozzle (301). The water inlet pipe is connected to the jet pipe (3) via the drive pump (102); A fish detection component (4) is disposed on the sliding plate (2); The controller is electrically connected to the fish detection component (4) and is used to feed back the detection data of the fish detection component (4) to the controller. The controller is electrically connected to the drive mechanism and the drive pump (102) respectively. The controller controls the drive mechanism and the drive pump (102) according to the detection data of the fish detection component (4).

2. The flow field adjustment device according to claim 1, characterized in that, The sliding plate (2) is provided in two sets, and the two sets of sliding plates (2) are symmetrically arranged. The jet tube (3) is located between the two sets of sliding plates (2), and the two ends of the jet tube (3) are respectively located on the two sets of sliding plates (2).

3. The flow field adjustment device according to claim 2, characterized in that, The jet tube (3) is rotatably mounted on the sliding plate (2). The sliding plate (2) is provided with a rotating mechanism (201) corresponding to the jet tube (3). The rotating mechanism (201) is connected to the jet tube (3) and is adapted to drive the jet tube (3) to rotate around its axial direction.

4. The flow field adjustment device according to claim 3, characterized in that, The jet pipe (3) is provided with a plurality of nozzles (301), and the plurality of nozzles (301) are spaced apart along the axial direction of the jet pipe (3).

5. The flow field regulating device according to any one of claims 1 to 4, characterized in that, With the sliding plate (2) extending out of the cavity, the fish detection component (4) is located at the end of the sliding plate (2) away from the housing (1).

6. The flow field adjustment device according to claim 5, characterized in that, The sliding plate (2) has a guide rod (5) at its end. The two ends of the guide rod (5) are respectively located on the two sets of sliding plates (2). The guide rod (5) has a second slide rail along its axial direction. The fish detection component (4) is slidably connected to the second slide rail.

7. The flow field adjustment device according to claim 6, characterized in that, The fish detection component (4) includes a fish finder and a video detector, which are spaced apart on the guide rod (5); The flow field adjustment device also includes an image processor, and the fish detection component is electrically connected to the image processor.

8. The flow field regulating device according to any one of claims 2 to 4, characterized in that, A barrier net (6) is provided on one side of the sliding plate (2). The bottom and top of the barrier net (6) are respectively connected to two sets of the sliding plates (2). The barrier net (6) is located on one side of the jet pipe (3). The nozzle (301) is set away from the barrier net (6).

9. The flow field regulating device according to any one of claims 2 to 4, characterized in that, The shell (1) is provided with a gate (7) at the opening.

10. A fish-attracting system for regulating the flow field at the inlet of a fish passage, characterized in that, include: Multiple flow field detection devices (8) are provided, and the multiple flow field detection devices (8) are spaced apart in the river channel (9); The flow field adjustment device according to any one of claims 1 to 9, wherein the flow field adjustment device is located at the fish passage inlet (10), the controller is electrically connected to the flow field detection device (8), and the controller controls the drive mechanism and the drive pump (102) according to the detection data of the flow field detection device (8).

11. The fish-attracting system for adjusting the flow field at the fish passage inlet according to claim 10, characterized in that, The flow field detection device (8) includes a water level gauge, a flow velocity gauge and a direction gauge, which are arranged at intervals.

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