Intelligent ecological flow scheduling device for water gate and fish guiding method

Abstract

The application discloses a kind of water gate intelligent ecological flow scheduling device, by layered gate body mechanism, flexible bionic fishway guide vane assembly, sluice bottom microtopography bionic lifting adjustment base, fish attracting module and controller constitute;Wherein, layered gate body mechanism is created by the difference of different fish migration water layer matching flow pattern with multiple vertically distributed gate plate.This application also discloses a kind of fish attracting method based on water gate intelligent ecological flow scheduling device, comprising: S1, fish species identification and strategy selection, S2, pre-induction aggregation, S3, smooth migration, S4, safe crossing.The application realizes the intelligent fish crossing strategy of first induction and then guidance, slow and fast complementation by controlling gate plate dynamic opening and closing and bionic base lifting in stages, effectively reduces the stress response of fish, and improves the success rate of target fish species crossing.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering and ecological protection technology, and in particular to an intelligent ecological flow scheduling device for sluice gates and a method for inducing fish passage. Background Technology

[0002] Traditional sluice gates play a vital role in regulating river flow, flood control, drainage, and irrigation. However, traditional sluice gates often employ a single-plane gate structure, resulting in a uniform water flow pattern and uneven velocity distribution during water release, which disrupts the ecological connectivity between upstream and downstream water bodies. This is particularly problematic for migratory fish species, where the uniform high-velocity discharge creates insurmountable water barriers, severely hindering their reproduction and habitat.

[0003] Existing auxiliary fish passage facilities, such as simulated natural fishways and fish lifts, generally suffer from drawbacks such as high cost, large land area, need for extensive modification of the original river channel, or being designed only for specific fish species.

[0004] Therefore, how to achieve an eco-friendly, intelligent, controllable sluice gate upgrade solution that is applicable to multiple fish species without significantly increasing engineering costs has become an urgent problem to be solved. Summary of the Invention

[0005] To address the above problems, this invention provides an intelligent ecological flow scheduling device for sluice gates, and also provides a method for inducing fish passage. Specifically, the following technical solutions can be adopted: The intelligent ecological flow scheduling device for sluice gates described in this invention includes: A layered gate mechanism is installed at the gate of a river channel. It includes at least three vertically distributed and independently controlled first gate, second gate, and third gate. Each of the first gate, second gate, and third gate is equipped with an opening sensor to provide differentiated water flow patterns that match the migration water layers of different fish species. The flexible biomimetic fishway guide vane assembly is installed in the river channel downstream of the sluice gate. It includes multiple sets of flexible biomimetic guide vanes that can swing with the water flow, which are used to adaptively weaken the rapid flow turbulence and create a slow-flowing backflow channel. The gate bottom micro-topography biomimetic lifting and adjustment base is set in the bottom sill area of ​​the river channel. It includes a sealed base and multiple electrically operated lifting biomimetic support frames. The surfaces of the multiple biomimetic support frames are provided with grooves and protrusions that simulate the natural riverbed, which are used to dynamically change the local topography of the river bottom. The fish-attracting module includes a low-frequency aquatic acoustic wave emitter, a water color temperature regulating lamp, and a trace biological pheromone slow-release box that work together. The low-frequency aquatic acoustic wave emitter and the water color temperature regulating lamp are both fixedly installed on the downstream side of the layered gate mechanism, and the trace biological pheromone slow-release box is embedded on the outside of the biomimetic support frame. The controller is fixedly installed on the riverbank of the river channel. The control input terminals of the layered gate body mechanism, the gate bottom micro-topography bionic lifting adjustment base and the fish-attracting module are all electrically connected to the control output terminal of the controller.

[0006] Preferably, the layered gate mechanism further includes a reinforcing frame, a first telescopic rod, a second telescopic rod, and a rotary drive assembly. The reinforcing frame is fixedly installed inside the gate opening of the river channel. The surface of the reinforcing frame has multiple openings corresponding to the first gate plate, the second gate plate, and the third gate plate. The first telescopic rod is disposed between the reinforcing frame and the first gate plate to control the raising and lowering of the first gate plate. The second telescopic rod is disposed between the reinforcing frame and the third gate plate to control the raising and lowering of the third gate plate. The second gate plate is rotatably connected to the middle of the reinforcing frame via a rotating shaft. The rotary drive assembly is used to adjust the rotation angle of the second gate plate to adjust the size of the opening corresponding to the second gate plate.

[0007] Preferably, the rotary drive assembly includes a servo motor, a worm gear, and a worm wheel. The servo motor is fixedly mounted on the top of the reinforced frame, the worm gear is fixedly connected to the output end of the servo motor, and the worm wheel is driven by the rotating shaft of the second gate, with the worm gear and worm wheel meshing and driving each other.

[0008] Preferably, the opening sensor includes two height sensors and one angle sensor. The two height sensors are respectively embedded at the ends of the first gate and the third gate, and the angle sensor is disposed at the end of the rotation shaft of the second gate.

[0009] Preferably, the flexible bionic fishway guide vane assembly further includes multiple sets of quick-installation bases and T-shaped clamping plates. The multiple sets of quick-installation bases are vertically fixedly installed on the side wall of the river channel, and multiple flexible bionic guide vanes are fixedly connected in an array to the surface of the T-shaped clamping plates. The T-shaped clamping plates are snapped into the slots of the quick-installation bases.

[0010] Preferably, the flexible biomimetic guide vane is made of elastic polymer material, which simulates the passive bending and swaying of aquatic plants when impacted by water flow, and is used to break the large-scale turbulence in the mainstream area into small-scale eddies and form a backflow zone on the back surface.

[0011] Preferably, the sealing base is pre-embedded and fixed at the bottom of the river channel. The biomimetic support frame includes a first frame, a second frame, and a third frame. The first frame, the second frame, and the third frame are all slidably connected to the inner side of the sealing base. A hydraulic telescopic rod is provided inside the sealing base. The telescopic end of the hydraulic telescopic rod is fixedly connected to the first frame. A first lifting arm plate extending to the second frame is provided on the side of the first frame. A second lifting arm plate extending to the third frame is provided on the side of the second frame.

[0012] Preferably, the first, second, and third frames are each provided with a water pipe connecting the grooved terrain and the corresponding raised terrain. The inlet end of the water pipe is located at the highest point of the raised terrain, and the outlet end of the water pipe is located at the lowest point of the grooved terrain. A solenoid valve is provided on the water pipe.

[0013] Preferably, the sealed base is further provided with a pheromone solution tank, a delivery pump and a replenishment pipe. The input end of the delivery pump extends to the bottom of the pheromone solution tank, the output end of the delivery pump is connected to the micro-biological pheromone slow-release box, one end of the replenishment pipe is connected to the pheromone solution tank, and the other end of the replenishment pipe extends to the riverbank of the river.

[0014] The fish-inducing method of the present invention, based on any of the above-mentioned intelligent ecological flow scheduling devices for sluice gates, includes the following steps: S1, Fish species identification and strategy selection: The underwater image acquisition device captures images of fish schools, the built-in recognition model of the controller identifies the target fish species, and the pre-stored fish passage strategy corresponding to the target fish species is retrieved. S2, Pre-attraction and Aggregation: In night mode, the controller activates the water body color temperature adjustment lamp to emit light with a set spectrum and illuminance, controls the low-frequency aquatic acoustic wave transmitter to emit intermittent pulsed sound waves simulating the feeding or aggregating of target fish species, simultaneously activates the delivery pump to pump the attractant solution in the pheromone solution tank into the micro-biological pheromone slow-release box and release it into the water body, and opens the second gate to a preset small opening to create a pulsed water flow, which continues for a preset time to lure the downstream fish to the area in front of the gate; wherein, the preset small opening of the second gate refers to an opening of less than 8%.

[0015] S3, Smooth Migration: After confirming the gathering of fish, the controller gradually adjusts the opening of each gate in the layered gate mechanism. The third gate opens to the first preset opening to form a low-speed guiding flow close to the riverbed, the second gate opens to the second preset opening to form a medium-speed guiding flow, and the first gate remains closed or slightly open. At the same time, the driving component in the micro-topography bionic lifting adjustment base at the bottom of the gate is activated, causing multiple bionic support frames to rise and form a stepped shallow beach topography. This guides the bottom water flow to a slow-flowing migratory channel created by the flexible bionic fishway guide wing assembly, guiding the fish upstream along this channel. S4, Safe Ascent: When the fish approach the gate, the controller controls the second gate to perform a brief full opening followed by a rapid closing to the third preset opening, in order to generate an upward auxiliary water flow thrust to help the fish climb over the biomimetic support frame, and at the same time shuts off the low-frequency aquatic sound wave transmitter and stops the release of trace biological pheromone slow-release box.

[0016] Compared with the prior art, the advantages of the present invention are as follows: 1. By setting up vertically distributed and independently controlled multi-layer gates, and in conjunction with opening sensors, it is possible to accurately output differentiated water flow patterns for different fish migration layers, avoiding the formation of water obstacles by a single high-speed water flow, and significantly improving the passage of fish with different ecological habits through the gate.

[0017] 2. By setting up flexible biomimetic fishway guide vane components, flexible biomimetic guide vanes that can swing with the water flow passively break the large-scale turbulence in the downstream rapid flow area into small-scale eddies, and a stable low-speed backflow area is naturally formed on the backflow surface of the vanes, providing a place for fish to rest and avoid the flow, thus constructing an eco-friendly slow-flow migration channel in a low-energy-consumption and power-free manner.

[0018] 3. By setting up a micro-topographical biomimetic lifting and adjustment base at the bottom of the gate, and utilizing the liftable biomimetic support frame and the grooved and raised topographic features on the surface, the deep pools and shallows of the natural riverbed can be dynamically simulated to guide fish along a specific route through the bottom of the gate. This eliminates the need for large-scale modifications to the original concrete riverbed, making construction convenient and cost-effective.

[0019] 4. Through the multi-modal synergistic effect of low-frequency sound waves, adjustable color temperature underwater lighting, and biological pheromones in the fish-attracting module, it can actively attract target fish to gather in front of the gate from the auditory, visual, and chemical perception levels, and guide them into the fish passage, which greatly improves the efficiency and targeting of fish induction.

[0020] 5. By providing a complete method for inducing fish to pass through the gate, from pre-inducing aggregation and smooth migration to safe crossing, and combining the time-sequence control of dynamic opening and closing of the gate and the lifting of the bionic base, an intelligent fish passage strategy of inducing first and then guiding, with complementary slow and fast approaches, is realized. This effectively reduces the stress response of fish and improves the success rate of the target fish species passing through the gate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the intelligent ecological flow scheduling device for sluice gates described in this invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle-layer gate mechanism.

[0023] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure.

[0024] Figure 4 yes Figure 1 A schematic diagram of the structure of a flexible biomimetic fishway guide vane assembly.

[0025] Figure 5 yes Figure 1 A schematic diagram of the structure of the micro-topography biomimetic lifting and adjusting base at the bottom of the gate.

[0026] Figure 6 yes Figure 2 A schematic diagram of the cross-sectional structure.

[0027] Figure 7 yes Figure 1 A schematic diagram of the connection structure of the trace biological pheromone sustained-release box.

[0028] The components include: 1. Layered gate mechanism; 2. River channel; 3. First gate plate; 4. Second gate plate; 5. Third gate plate; 6. Flexible biomimetic guide vanes; 7. Sealed base; 8. Grooved terrain; 9. Raised terrain; 10. Low-frequency aquatic acoustic wave transmitter; 11. Water color temperature regulating light; 12. Trace biological pheromone slow-release box; 13. Controller; 14. Reinforced frame; 15. First telescopic rod; 16. Second telescopic rod; 17. Servo motor; 18. Worm gear; 19. Worm wheel; 20. Quick-release base; 21. T-shaped clamping plate; 22. First skeleton; 23. Second skeleton; 24. Third skeleton; 25. Hydraulic telescopic rod; 26. First lifting arm plate; 27. Second lifting arm plate; 28. Water intake pipe; 29. ​​Pheromones solution tank; 30. Delivery pump; 31. Replenishment pipe. Detailed Implementation

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific working processes are given. However, the scope of protection of the present invention is not limited to the following embodiments.

[0030] Example 1: like Figure 1-7 As shown, the intelligent ecological flow scheduling device for sluice gates of the present invention consists of a layered gate body mechanism 1, a flexible bionic fishway guide wing assembly, a micro-topography bionic lifting and adjusting base at the bottom of the gate, a fish-attracting module, and a controller 13.

[0031] Specifically, the layered gate mechanism 1 is installed at the gate of the river channel 2. The layered gate mechanism 1 includes at least three vertically distributed and independently controlled first gate 3, second gate 4, and third gate 5. The first gate 3 is located in the surface warm water flow layer, the second gate 4 is located in the middle mainstream flow layer, and the third gate 5 is located in the lower low-temperature low-lying flow layer. In this embodiment, the first gate 3 and the third gate 5 are both lifting structures, while the second gate 4 is a rotating opening and closing structure. Each gate is equipped with an opening sensor, which includes two height sensors and one angle sensor: the two height sensors are respectively embedded at the ends of the first gate 3 and the third gate 5 to detect the lifting height of the gate; the angle sensor is located at the end of the rotation shaft of the second gate 4 to detect the rotation angle of the gate. By using multiple gates arranged in this layered manner, differentiated water flow patterns matching the migration layers of different fish species can be output by controlling the opening degree of different gates.

[0032] like Figure 2 , Figure 3 As shown, the layered gate mechanism 1 also includes a reinforcing frame 14, a first telescopic rod 15, a second telescopic rod 16, and a rotary drive assembly. The reinforcing frame 14 is fixedly installed inside the gate opening of the river channel 2, and its surface has multiple openings corresponding to the first gate plate 3, the second gate plate 4, and the third gate plate 5. The first telescopic rod 15 is disposed between the reinforcing frame 14 and the first gate plate 3, and is used to control the raising and lowering of the first gate plate 3. The second telescopic rod 16 is disposed between the reinforcing frame 14 and the third gate plate 5, and is used to control the raising and lowering of the third gate plate 5. In this embodiment, both the first telescopic rod 15 and the second telescopic rod 16 are electric actuators. The second gate plate 4 is rotatably connected to the middle of the reinforcing frame 14 via a rotating shaft. The rotary drive assembly includes a servo motor 17, a worm gear 18, and a worm wheel 19. The servo motor 17 is fixedly installed on the top of the reinforcing frame 14, the worm gear 18 is fixedly connected to the output end of the servo motor 17, and the worm wheel 19 is drively connected to the rotating shaft of the second gate plate 4, and the worm gear 18 and the worm wheel 19 mesh and drive each other. Therefore, the rotary drive assembly can precisely adjust the rotation angle of the second gate 4, thereby adjusting the corresponding opening size.

[0033] Flexible, biomimetic fishway guide vanes are deployed in the river channel downstream of the sluice gate. For example... Figure 1 , Figure 4 As shown, it includes multiple sets of quick-release bases 20, T-shaped clamps 21, and multiple sets of flexible biomimetic guide vanes 6 that can oscillate with the water flow. The multiple sets of quick-release bases 20 are vertically fixed to the sidewall of the river channel. The T-shaped clamps 21 are snapped into the grooves of the quick-release bases 20. Multiple flexible biomimetic guide vanes 6 are fixedly connected in an array to the surface of the T-shaped clamps 21. The flexible biomimetic guide vanes 6 are made of elastic polymer materials (such as polyurethane elastomer), with a shape mimicking aquatic plants, and a thickness of 2-5 mm. When impacted by high-speed water flow, the vanes passively bend and oscillate with the waves, breaking the large-scale turbulence in the main flow area into small-scale eddies, and forming a stable low-speed backflow zone on the backflow surface, thereby adaptively weakening the rapid turbulence and creating a slow-flowing migratory channel for fish to rest.

[0034] The biomimetic lifting and regulating base for the micro-topography of the sluice gate bottom is set in the sill area of ​​channel 2. For example... Figure 1 , Figure 6 and Figure 7As shown, it includes a sealed base 7 and an electrically movable biomimetic support frame. In this embodiment, the biomimetic support frame includes a first frame 22, a second frame 23, and a third frame 24 arranged sequentially along the water flow direction. The sealed base 7 is pre-embedded and fixed to the bottom of the river channel. The first frame 22, the second frame 23, and the third frame 24 are all slidably connected to the sliding grooves provided on the inner sidewall of the sealed base 7 via sliders on both sides. A vertical hydraulic telescopic rod 25 is provided inside the sealed base 7, and its telescopic end is fixedly connected to the first frame 22 to control the lifting and lowering of the first frame 22. Simultaneously, a first lifting arm plate 26 is provided at the bottom of the sidewall of the first frame 22 near the second frame 23. The first lifting arm plate 26 extends towards the second frame 23 and inserts into a first vertical long groove opened on the sidewall of the second frame 23. When the first lifting arm plate 26 rises with the first frame 22 and contacts the top of the first vertical long groove, it will drive the second frame 23 to rise. Similarly, a second lifting arm plate 27 is provided at the bottom of the side wall of the second frame 23 near the third frame 24. The second lifting arm plate 27 extends towards the third frame 24 and is inserted into a second vertical groove opened on the side wall of the third frame 24. When the second lifting arm plate 27 rises with the second frame 23 and contacts the top of the second vertical groove, it will drive the third frame 23 to rise, ultimately forming a three-level shallow beach terrace.

[0035] The surfaces of the first frame 22, the second frame 23, and the third frame 24 are all equipped with grooves 8 (simulating deep pools) and raised areas 9 (simulating shallows) that simulate natural riverbeds, used to dynamically change the local topography of the riverbed. Furthermore, each of the first frame 22, the second frame 23, and the third frame 24 is equipped with a water pipe 28, with at least one water pipe 28 on each frame, connecting the grooves 8 to the corresponding raised areas 9. The inlet end of each water pipe 28 is located at the highest point of the raised area 9, and the outlet end is located at the lowest point of the groove 8. Each water pipe 28 is equipped with a solenoid valve. By periodically opening the solenoid valve, water is diverted to the grooves 8 to flush away silt and prevent sediment buildup.

[0036] The fish-attracting module includes a low-frequency aquatic acoustic wave emitter 10, a water color temperature regulating lamp 11, and a trace biological pheromone slow-release box 12, which work in concert. The low-frequency aquatic acoustic wave emitter 10 (e.g., an ultrasonic transducer with a frequency range of 20Hz-500Hz) and the water color temperature regulating lamp 11 (adjustable color temperature range of 2000K-5000K) are both fixedly installed on the downstream-facing side of the layered gate mechanism 1. The low-frequency aquatic acoustic wave emitter 10 is mounted on a reinforcing frame 14 between the second gate plate 4 and the third gate plate 5, and the water color temperature regulating lamp 11 is mounted on the reinforcing frame 14 between the first gate plate 3 and the second gate plate 4. The trace biological pheromone slow-release box 12 is embedded above the biomimetic support frame. In addition, the sealed base 7 contains a pheromone solution tank 29, a delivery pump 30, and a replenishment pipe 31. The input end of the delivery pump 30 extends to the bottom of the pheromone solution tank 29, and the output end is connected to the trace biological pheromone slow-release box 12. One end of the replenishment tube 31 is connected to the pheromone solution tank 29, and the other end extends to the riverbank to facilitate the replenishment of a solution containing attractants such as L-serine and bile acids.

[0037] The controller 13 is fixedly installed on the riverbank of the river channel 2. Its control output terminal is electrically connected to the control input terminals of the first telescopic rod 15, the second telescopic rod 16, the servo motor 17, the opening sensor, the hydraulic telescopic rod 25, the delivery pump 30, the low-frequency aquatic acoustic wave transmitter 10, the water color temperature regulating lamp 11, and the solenoid valve of the water inlet pipe 28. The controller 13 can issue commands to adjust the opening degree of each gate according to the water conditions (water temperature stratification, dissolved oxygen) and the target fish situation.

[0038] Example 2: like Figure 1-7 As shown, the present invention also provides a method for inducing fish passage based on the above-mentioned intelligent ecological flow scheduling device for sluice gates. The specific steps are illustrated below using the peak migration period of a certain anadromous fish species in spring as an example: S1, Fish species identification and strategy selection: Use an underwater camera (not shown in the figure) to capture images of fish schools, and then the underwater camera transmits the image signal to the controller 13. The controller 13 has a built-in artificial intelligence model to identify the target fish species and automatically retrieves the corresponding pre-stored fish passing strategy library.

[0039] S2, Pre-attraction and Gathering Stage (Night): Entering night mode, controller 13 activates the water body color temperature adjustment lamp 11 (set to color temperature 3000K, illuminance 3Lux), and controls the low-frequency aquatic acoustic wave transmitter 10 to emit intermittent pulsed sound waves (center frequency 150Hz) simulating the feeding of target fish species. Simultaneously, the delivery pump 30 operates, pumping the attractant material in the pheromone solution tank 29 into the micro-biopheromone slow-release box 12 and releasing it into the water. Furthermore, the second gate 4 is opened to approximately 5% (i.e., the preset small opening), creating a weak pulsed water flow (frequency 0.5Hz) for 30 minutes, attracting fish within a 300-meter downstream range to the gate.

[0040] S3, Stable Migration Phase: After confirming the fish population, controller 13 gradually adjusts the opening of each gate. Specifically, the third gate 5 opens to 15% (i.e., the first preset opening), creating a low-speed flow (0.2-0.4 m / s) close to the riverbed; the second gate 4 opens to 30% (i.e., the second preset opening), creating a medium-speed guiding flow (0.5-0.8 m / s); the first gate 3 remains closed. Simultaneously, the hydraulic telescopic rod 25 is activated, causing the first frame 22, the second frame 23, and the third frame 24 to rise sequentially, forming a three-tiered shallow terrace. At the same time, the bottom water flow guide flexible bionic guide vanes 6 drift with the water, forming a slow-flowing migration channel, allowing the fish to swim upstream along this channel.

[0041] S4, Safe Ascent Phase: When the fish approach the gate, the controller 13 briefly opens the second gate 4 fully, holding for 0.5 seconds before quickly closing it to 20% (the third preset opening), generating an upward auxiliary water flow to help the fish climb over the biomimetic support frame. Simultaneously, sound waves and pheromone release are shut off to avoid overstimulation. Throughout the process, the flexible biomimetic guide vanes 6 continuously oscillate to stabilize the water flow structure.

[0042] Using the above methods, the success rate of the target fish species passing through the sluice gate can be increased to over 75%, with no obvious stress avoidance behavior.

[0043] It should be noted that the opening degrees of each gate in the above-mentioned pre-attraction and aggregation stage, stable migration stage, and safe crossing stage are set according to the migration habits of a certain anadromous fish species in spring as described in Example 2. For other fish species, the opening degree of each gate in each stage should be adapted to their migration habits when inducing fish to cross. Generally, in the pre-attraction and aggregation stage, the preset small opening degree of the second gate refers to an opening degree of less than 8%; in the stable migration stage, the first preset opening degree of the third gate refers to an opening degree of 10-20%, the second preset opening degree of the second gate refers to an opening degree of 25-40%, and the first gate is kept slightly open, which means an opening degree of 0-5%; in the safe crossing stage, the third preset opening degree of the second gate refers to an opening degree of 15-25%.

[0044] It should be noted that in the description of this invention, terms such as "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 this invention.

Claims

1. A water gate intelligent ecological flow scheduling device, characterized in that: include A layered gate mechanism (1) is installed at the gate of the river channel (2), including at least three vertically distributed and independently controlled first gate (3), second gate (4) and third gate (5), and the first gate (3), second gate (4) and third gate (5) are all equipped with opening sensors to provide differentiated water flow patterns that match the migration water layers of different fish species; The flexible bionic fishway guide vane assembly is installed in the river channel (2) downstream of the sluice gate. It includes multiple sets of flexible bionic guide vanes (6) that can swing with the water flow, which are used to adaptively weaken the rapid flow turbulence and create a slow-flow migration channel. The gate bottom micro-topography bionic lifting adjustment base is set in the bottom sill area of ​​the river channel (2), including a sealed base (7) and multiple electric lifting bionic support skeletons. The surfaces of the multiple bionic support skeletons are provided with groove topography (8) and raised topography (9) that simulate the natural riverbed, which are used to dynamically change the local topography of the bottom of the river channel (2). The fish-attracting module includes a low-frequency aquatic acoustic wave emitter (10), a water color temperature regulating lamp (11), and a trace biological pheromone slow-release box (12) that work together. The low-frequency aquatic acoustic wave emitter (10) and the water color temperature regulating lamp (11) are both fixedly installed on the downstream side of the layered gate mechanism (1), and the trace biological pheromone slow-release box (12) is embedded in the outside of the bionic support frame. The controller (13) is fixedly installed on the riverbank of the river channel (2). The control input terminals of the layered gate body mechanism (1), the gate bottom micro-topography bionic lifting adjustment base and the fish-attracting module are all electrically connected to the control output terminal of the controller (13).

2. The water gate intelligent ecological flow scheduling device according to claim 1, characterized in that: The layered gate mechanism (1) further includes a reinforcing frame (14), a first telescopic rod (15), a second telescopic rod (16), and a rotary drive assembly. The reinforcing frame (14) is fixedly installed inside the gate of the river channel (2). The surface of the reinforcing frame (14) has multiple openings corresponding to the first gate plate (3), the second gate plate (4), and the third gate plate (5). The first telescopic rod (15) is located between the reinforcing frame (14) and the first gate plate (3) to control the lifting and lowering of the first gate plate (3). The second telescopic rod (16) is located between the reinforcing frame (14) and the third gate plate (5) to control the lifting and lowering of the third gate plate (5). The second gate plate (4) is rotatably connected to the middle part of the reinforcing frame (14) through a rotating shaft. The rotary drive assembly is used to adjust the rotation angle of the second gate plate (4) to adjust the size of the opening corresponding to the second gate plate (4).

3. The water gate intelligent ecological flow scheduling device according to claim 2, characterized in that: The rotary drive assembly includes a servo motor (17), a worm (18), and a worm wheel (19). The servo motor (17) is fixedly mounted on the top of the reinforcing frame (14). The worm (18) is fixedly connected to the output end of the servo motor (17). The worm wheel (19) is connected to the rotating shaft of the second gate (4) and the worm (18) and the worm wheel (19) mesh and drive each other.

4. The intelligent ecological flow scheduling device for sluice gates according to claim 1, characterized in that: The opening sensor includes two height sensors and one angle sensor. The two height sensors are respectively embedded at the ends of the first gate (3) and the third gate (5), and the angle sensor is set at the end of the rotation shaft of the second gate (4).

5. The intelligent ecological flow scheduling device for sluice gates according to claim 1, characterized in that: The flexible bionic fishway guide vane assembly also includes multiple quick-install bases (20) and T-shaped clamps (21). The multiple quick-install bases (20) are vertically fixed on the side wall of the river channel (2), and multiple flexible bionic guide vanes (6) are fixedly connected in an array on the surface of the T-shaped clamps (21). The T-shaped clamps (21) are clamped in the slots of the quick-install bases (20).

6. The intelligent ecological flow scheduling device for sluice gates according to claim 1, characterized in that: The flexible biomimetic guide vane (6) is made of elastic polymer material. When impacted by water flow, it simulates the passive bending and swaying of aquatic plants, which is used to break the large-scale turbulence in the mainstream area into small-scale eddies and form a backflow area on the backflow surface.

7. The intelligent ecological flow scheduling device for sluice gates according to claim 1, characterized in that: The sealing base (7) is pre-embedded and fixed at the bottom of the river channel (2). The bionic support frame includes a first frame (22), a second frame (23) and a third frame (24). The first frame (22), the second frame (23) and the third frame (24) are all slidably connected to the inner side of the sealing base (7). The sealing base (7) is provided with a hydraulic telescopic rod (25). The telescopic end of the hydraulic telescopic rod (25) is fixedly connected to the first frame (22). The side of the first frame (22) is provided with a first lifting arm plate (26) extending to the second frame (23). The side of the second frame (23) is provided with a second lifting arm plate (27) extending to the third frame (24).

8. The intelligent ecological flow scheduling device for sluice gates according to claim 7, characterized in that: The first frame (22), the second frame (23) and the third frame (24) are each provided with a water pipe (28) connecting the groove terrain (8) and the corresponding protruding terrain (9). The inlet end of the water pipe (28) is located at the highest point of the protruding terrain (9), and the outlet end of the water pipe (28) is located at the lowest point of the groove terrain (8). A solenoid valve is provided on the water pipe (28).

9. The intelligent ecological flow scheduling device for sluice gates according to claim 1, characterized in that: The sealed base (7) is also equipped with a pheromone solution tank (29), a delivery pump (30) and a replenishment pipe (31). The input end of the delivery pump (30) extends to the bottom of the pheromone solution tank (29), and the output end of the delivery pump (30) is connected to the micro-biological pheromone slow-release box (12). One end of the replenishment pipe (31) is connected to the pheromone solution tank (29), and the other end of the replenishment pipe (31) extends to the riverbank of the river (2).

10. A method for inducing fish passage based on the intelligent ecological flow scheduling device for sluice gates according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1, Fish species identification and strategy selection: The underwater image acquisition device captures images of fish schools, and the built-in identification model of the controller (13) identifies the target fish species and retrieves the pre-stored fish passing strategy corresponding to the target fish species. S2, pre-attracting aggregation: In night mode, the controller (13) activates the water body color temperature adjustment lamp (11) to emit light with a set spectrum and illuminance, controls the low frequency aquatic sound wave transmitter (10) to emit intermittent pulse sound waves simulating the feeding or agglomeration of the target fish species, and simultaneously activates the delivery pump (30) to pump the attractant solution in the pheromone solution tank (29) into the trace biological pheromone slow release box (12) and release it into the water body, and opens the second gate (4) to a preset small opening to create a pulse water flow, which continues for a preset time to attract the downstream fish to the area in front of the gate; S3, after the fish gather smoothly, the controller (13) gradually adjusts the opening of each gate in the layered gate mechanism (1). The third gate (5) is opened to the first preset opening to form a low-speed guiding flow close to the river bottom, the second gate (4) is opened to the second preset opening to form a medium-speed guiding flow, and the first gate (3) is kept closed or slightly open. At the same time, the driving component in the micro-topography bionic lifting adjustment base at the bottom of the gate is activated to lift multiple bionic support skeletons to form a stepped shallow beach topography, which guides the bottom water flow to the slow-flow migration channel created by the flexible bionic fishway guide wing assembly, and guides the fish to swim upstream along the channel. S4, safe passage: When the fish approach the gate, the controller (13) controls the second gate (4) to perform a brief full opening and then quickly close back to the third preset opening, so as to generate an upward auxiliary water flow thrust to help the fish climb over the bionic support skeleton, and at the same time turn off the low frequency aquatic sound wave transmitter (10) and stop the release of the trace biological pheromone slow release box (12).

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