A lighting device and a lighting method applied to a high-altitude fishway

Abstract

The application discloses a light device and a light method applied to a high-altitude fishway, which comprises a plurality of fishway modules, the fishway modules are sequentially connected and communicated with each other along a set direction to form a tunnel fishway, each fishway module comprises a fish channel, opposite sides of the fish channel are open, a first baffle is vertically arranged at each open side of the fish channel, a plurality of second baffles are arranged on the inner wall of the fish channel and are distributed in a staggered mode with the first baffles, vertical slit gaps for fish passing through are formed between the two ends of the first baffles and the corresponding second baffles, a support is arranged on the fishway module, a lighting assembly is arranged on the support, a light shielding assembly comprises a sleeve arranged at the bottom of the lighting assembly and a light adjusting plate rotatably arranged in the sleeve, and the light adjusting plate is located between the lighting assembly and the fishway module. The application can effectively solve the problem that fish is difficult to pass through the fishway under different flow rates.

Description

Technical Field

[0001] This invention relates to the field of tunnel fishway technology, and more particularly to a lighting device and method for use in high-altitude fishways. Background Technology

[0002] In water conservancy projects, it is often necessary to block rivers. To help fish migrate, fishways are typically built to allow them to overcome artificial obstacles. In high-altitude areas, due to the steep mountains and deep valleys, open-cut fishway construction is difficult and costly. Therefore, tunnels are often used to traverse the mountains to reduce investment, minimize ecological disturbance, and reduce the energy consumption of fish swimming upstream by slowing the water flow in the tunnel sections. Furthermore, lighting fixtures are installed inside the tunnels to guide fish in their orientation in the dark, utilizing their phototaxis. However, existing tunnel fishway lighting systems typically use only a single fixed color light source, which cannot be adjusted according to changes in flow velocity. High-altitude rivers experience significant seasonal flow variations, and fish phototaxis responses differ greatly under different flow velocities. A fixed color light source cannot effectively guide fish under various conditions, and a fixed flow cross-section cannot simultaneously accommodate suitable flow velocities to attract fish during the dry season and reduce flow during the flood season to avoid exceeding fish swimming capabilities. Therefore, the combination of a single color light and a fixed cross-section cannot simultaneously meet the needs of guiding and traversing fish migration under different flow conditions. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a lighting device and method for use in high-altitude fish passages, enabling the matching of lighting color and flow rate under different flow conditions, thereby solving the problem of fish having difficulty passing through fish passages under different flow rates.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a lighting device for use in high-altitude fish passages, comprising: Multiple fishway modules are connected sequentially and interconnected along a predetermined direction to form a tunnel fishway; The fishway module includes a fish passage trough, which is open on both sides. Each fish passage trough has a first partition vertically installed on both open sides. The inner wall of the fish passage trough is provided with a plurality of second partitions that are staggered from each of the first partitions. Each of the two ends of the first partition has a vertical gap between it and the corresponding second partition to allow fish to pass through. A support bracket is mounted on the fishway module; A lighting assembly is mounted on the bracket, with the lighting end of the lighting assembly facing the fish passage to provide illumination to the vertical gaps and the central area of ​​the fish passage; A light-shielding assembly includes a sleeve disposed at the bottom of the lighting assembly, and a dimming plate rotatably disposed within the sleeve, the dimming plate being located between the lighting assembly and the fishway module; The dimming plate is circular, with multiple sets of dimming parts of different colors arranged sequentially along its circumference. The dimming plate has a light-transmitting opening, which corresponds to the position of one set of dimming parts. The dimming plate can rotate relative to the sleeve so that different sets of dimming parts can be selectively aligned with the lighting end of the lighting component, thereby changing the emitted light color of the lighting component. A gate, which is rotatably mounted on the first partition, is capable of rotating to contact the corresponding second partition to block the corresponding vertical gap; A drive assembly capable of driving the gate to rotate, and also capable of driving the dimming plate to rotate.

[0005] Furthermore, the drive assembly includes a dual-axis motor mounted on the bracket. A first connecting shaft is provided at one of the shafts of the dual-axis motor. A first transmission wheel is provided at the rotatable connection point between the gate and the first partition. A second transmission wheel is rotatably provided on the second partition. A third transmission wheel is rotatably provided on the first partition and coaxially connected to the first connecting shaft. Two pull ropes that are staggered and have opposite directions are wound around the third transmission wheel. One of the pull ropes is fixedly connected to the first transmission wheel after passing through the second transmission wheel, and the other pull rope is fixedly connected to the first transmission wheel.

[0006] Furthermore, a transmission wheel belt assembly is provided at the other shaft of the dual-axis motor, and a second connecting shaft is provided at the center of the bottom of the dimming plate, extending through the sleeve body. The second connecting shaft is connected to the moving end of the transmission wheel belt assembly for transmission.

[0007] Furthermore, electromagnets are provided on both the first and second partitions, and the gate can rotate to the corresponding posture and be magnetically attracted by the corresponding electromagnet.

[0008] Furthermore, the fishway module also includes a branch guide channel disposed on the side wall of the fish passage channel. The side wall of the fish passage channel is also provided with two openings that communicate with the two ends of the branch guide channel, and a filter plate is embedded in each opening that can slide up and down. Ventilation components are provided at the tributary guide channel and the support. The ventilation components can be activated and drive the airflow at the fishway module when water flows through the tributary guide channel.

[0009] Furthermore, the ventilation assembly includes a first frame disposed within the branch guide channel, blades rotatably disposed on the first frame, a gear transmission box disposed on the first frame, a central shaft connected to the input end of the gear transmission box disposed at the center of the blades, a third connecting shaft disposed at the output end of the gear transmission box, a ventilation section disposed on the bracket, the third connecting shaft connected to the input end of the ventilation section, and the ventilation section being mounted on the bracket via a second frame.

[0010] A lighting method for fish passages at high altitudes includes the following steps: S1. Real-time monitoring of water flow velocity in the fish tank to determine the current flow velocity condition; S2. When the water flow velocity is within the normal flow velocity range, which corresponds to the active upstream migration of fish, the gate remains closed, the vertical gap is partially open, and the fish passage channel allows flow through a partial cross-section; the dimming plate remains in its initial position, the light-transmitting port is aligned with the preset initial dimming section, and the emitted light from the lighting component is filtered by the initial dimming section and illuminates the vertical gap and the central area of ​​the fish passage channel with the first light color. The first light color is used to induce fish to enter the fish passage and continue to migrate upstream; the water flow in the tributary guide channel drives the blades to rotate, and the blades drive the gear transmission box through the central shaft. The gear transmission box drives the ventilation section to rotate through the third connecting shaft, causing air to flow at the fish passage module; S3. When the water flow velocity exceeds the normal flow velocity range and reaches an abnormal flow velocity condition, which corresponds to the stress and risk avoidance state of fish, the control drive component is activated: S300, the drive assembly drives the gate to rotate relative to the first partition, so that the end of the gate moves closer to the end of the second partition on the opposite side, opening the corresponding vertical gap, so that both vertical gaps are fully opened, increasing the flow area of ​​the fish passage to reduce the water flow velocity in the fish passage. S301. While the drive assembly drives the gate to rotate, the drive assembly synchronously drives the dimming plate to rotate relative to the sleeve through the transmission connection. The light-transmitting port switches to be aligned with another set of dimming parts as the dimming plate rotates. After being filtered by the dimming part, the light emitted by the lighting assembly changes from the first light color to the second light color and illuminates the vertical gap and the middle area of ​​the fish passage. The second light color is used to assist in guiding the fish to adjust their migratory behavior to adapt to the water flow state under the abnormal flow rate conditions. S4. When the water flow velocity drops back to the normal flow velocity range, the drive component reverses its rotation, causing the gate to rotate in the opposite direction and reset. The vertical gap is restored to a partially open state. At the same time, the dimming plate rotates in the opposite direction and resets. The emitted light of the lighting component switches from the second light color back to the first light color, so that the fish return to the active upstream migration state under normal flow velocity conditions.

[0011] Furthermore, the real-time monitoring of the water flow velocity in the fish tank in step S1 specifically involves: A flow velocity sensor is installed in the fish tank to collect flow velocity signals in real time, and the current flow velocity condition is determined based on the collected flow velocity signals.

[0012] Furthermore, the normal flow velocity range is the suitable flow velocity range for fish migration; The abnormal flow velocity range refers to the flow velocity range that is higher than the upper limit of the suitable flow velocity range.

[0013] The beneficial effects of this invention are reflected in: In this invention, when the water flow velocity in the fish-walking channel is within the normal flow velocity range, the drive component does not start, the gate remains closed, and the vertical slit gaps are partially opened, maintaining a suitable water flow velocity to create a fish-attracting signal. At this time, the emitted light from the lighting component passes through the light-transmitting opening and the corresponding dimming unit before illuminating the fish-walking channel. When the flow velocity exceeds the normal flow velocity range and reaches an abnormal flow velocity condition, the drive component starts and simultaneously drives the gate and dimming plate to rotate. The rotation of the gate fully opens both vertical slit gaps, increasing the flow area to reduce the flow velocity. The rotation of the dimming plate switches the light-transmitting opening to align with another set of dimming units, and the emitted light from the lighting component passes through this dimming unit. After filtering, the light is irradiated onto the fish passage, achieving synchronous linkage between flow rate regulation and light color switching. Through the above regulation, the water flow maintains a suitable flow rate under normal flow conditions and guides fish to actively swim upstream in conjunction with the corresponding light color. Under abnormal flow conditions, the flow area is increased to reduce the flow rate and another light color is used to assist fish in adjusting their migratory behavior. The synergistic effect of flow rate and light color allows fish to obtain clear environmental signals under different hydraulic conditions. This solves the problems of fish having difficulty identifying their direction due to single illumination in high-altitude fish passage tunnel sections and fish having difficulty passing through due to the inability of the fixed flow cross section to adapt to changes in flow rate, thus improving the success rate of fish passage under complex hydraulic conditions. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the fishway module in this invention; Figure 3 This is a schematic diagram illustrating the configuration of the driving component in this invention; Figure 4 In this invention Figure 2 A magnified view of part A shown; Figure 5 This is a schematic diagram of the ventilation component in this invention.

[0015] In the picture: 1. Fishway Module; 101. Fish Trough; 102. First Baffle; 103. Second Baffle; 104. Branch Guide Trough; 105. Filter Plate; 2. Support; 3. Lighting Components; 301. Lighting Lamp; 302. Light-shielding Tube; 4. Light-shielding Components; 401. Sleeve; 402. Dimming Plate; 403. Light Transmitter; 404. Dimming Section; 5. Gate; 6. Electromagnet; 7. Drive Components; 701. Dual-Axis Motor; 702. First Connecting Shaft; 703. First Transmission Wheel; 704. Second Transmission Wheel; 705. Third Transmission Wheel; 706. Pull Rope; 707. Transmission Wheel Belt Assembly; 8. Ventilation Components; 801. First Frame; 802. Blades; 803. Gear Transmission Box; 804. Third Connecting Shaft; 805. Ventilation Section; 806. Second Frame. Detailed Implementation

[0016] 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 a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0017] Please see Figure 1-5 This invention discloses a lighting device for high-altitude fish passages, comprising multiple fish passage modules 1, which are sequentially connected and interconnected along a predetermined direction to form a tunnel fish passage. Each fish passage module 1 includes a fish passage trough 101, with both sides of the fish passage trough 101 being open. A first partition 102 is vertically installed on both open sides of each fish passage trough 101. Multiple second partitions 103 are installed on the inner wall of the fish passage trough 101, which are staggered with each of the first partitions 102. The two ends of the first partitions 102 and the corresponding second partitions 103 have vertical gaps for fish to pass through.

[0018] In one embodiment, a bracket 2 is installed on the top of the fishway module 1, and a lighting component 3 is provided on the bracket 2. The lighting end of the lighting component 3 faces the fish passage 101 to provide illumination to the vertical gaps and the central area of ​​the fish passage 101. The lighting component 3 includes a lighting lamp 301 mounted on the bracket 2. The lighting end of the lighting lamp 301 faces downward, and there are two sets of lighting lamps 301. One set of lighting lamps 301 consists of two lamps, which are used to illuminate the vertical gaps on one side of the fish passage 101. The other set of lighting lamps 301 consists of one lamp, which is used to illuminate the central area of ​​the fish passage 101. The lighting end of the lighting lamp 301 is surrounded by a light shield 302 to prevent light from being scattered from other positions and affecting the lighting effect. In addition, each fish passage 101 is connected in sequence, and the connection is sealed by a waterproof structure to prevent leakage.

[0019] The waterproof structure described above is common knowledge in this field, so its specific structure and working principle will not be elaborated on further in this article.

[0020] In addition, this device also includes a light-shielding component 4, which includes a sleeve 401 installed at the bottom of the lighting component 3. The sleeve 401 is also connected to the light-shielding cylinder 302. The sleeve 401 is disc-shaped and hollow inside. A dimming plate 402 is rotatably installed inside the sleeve 401. The dimming plate 402 is located between the lighting component 3 and the fishway module 1. The dimming plate 402 is circular in shape, and multiple dimming parts 404 with different colors are arranged sequentially along its circumference. Light-transmitting openings 403 are provided on the opposite side walls of the dimming plate 402. There are two of each, and the position of the light-transmitting opening 403 corresponds to the position of one of the dimming parts 404. In use, the dimming plate 402 can be rotated and adjusted relative to the sleeve 401 so that different groups of dimming parts 404 can be selectively aligned with the lighting end of the lighting component 3, thereby changing the emitted light color of the lighting component 3. The first partition 102 is rotatably mounted with a gate 5, which can be rotated to contact the corresponding second partition 103 to block the corresponding vertical gap. The bracket 2 is also provided with a drive component 7, which can drive the gate 5 to rotate and at the same time drive the dimming plate 402 to rotate.

[0021] In practice, when the water flow velocity in the fish passage 101 is within the normal flow velocity range, the drive component 7 does not start, the gate 5 remains closed, and the vertical slit gaps are partially opened, maintaining a suitable water flow velocity to create a fish-attracting signal. At this time, the emitted light from the lighting component 3 passes through the light-transmitting port 403 and the corresponding dimming unit 404 before illuminating the fish passage 101. When the flow velocity exceeds the normal flow velocity range and reaches an abnormal flow velocity condition, the drive component 7 starts and simultaneously drives the gate 5 and the dimming plate 402 to rotate. The rotation of the gate 5 fully opens both vertical slit gaps, increasing the flow area to reduce the flow velocity. The rotation of the dimming plate 402 switches the light-transmitting port 403 to be aligned with another set of dimming units 404, illuminating the fish passage 101. The emitted light from component 3 is filtered by the dimming unit 404 and then irradiates the fish passage 101, realizing the synchronous linkage of flow rate adjustment and light color switching. Through the above adjustment, the water flow maintains a suitable flow rate under normal flow conditions and guides the fish to actively swim upstream in conjunction with the corresponding light color. Under abnormal flow conditions, the flow area is increased to reduce the flow rate and another light color is used to assist the fish in adjusting their migratory behavior. The synergistic effect of flow rate and light color enables the fish to obtain clear environmental signals under different hydraulic conditions. This solves the problems of fish having difficulty identifying direction due to single illumination in high-altitude fish passage tunnel sections and fish having difficulty passing through due to the inability of the fixed flow cross section to adapt to flow changes, thereby improving the success rate of fish passage under complex hydraulic conditions.

[0022] In one embodiment, the drive assembly 7 includes a dual-axis motor 701 mounted on the bracket 2. A first connecting shaft 702 is coaxially mounted on one of the shafts of the dual-axis motor 701. A first transmission wheel 703 is mounted on the gate 5 away from its rotatable connection with the first partition 102. A second transmission wheel 704 is rotatably mounted on the second partition 103. A third transmission wheel 705, coaxially connected to the first connecting shaft 702, is rotatably mounted on the first partition 102. Two pull ropes 706, which are staggered and wound in opposite directions, are wound around the third transmission wheel 705. One pull rope 706 is fixedly connected to the first transmission wheel 703 after passing through the second transmission wheel 704, and the other pull rope 706 is fixedly connected to the first transmission wheel 703.

[0023] In specific implementation, after the dual-axis motor 701 starts, one of the shafts drives the first connecting shaft 702 and the third transmission wheel 705 to rotate synchronously. When the third transmission wheel 705 rotates, one of the two pull ropes 706 wound around it in opposite directions is tightened and the other pull rope 706 is loosened. When the third transmission wheel 705 rotates in the forward direction, the pull rope 706 wrapped around the second transmission wheel 704 is tightened, and the pull rope 706 pulls the first transmission wheel 703 to rotate, thereby driving the gate 5 to rotate in one direction. When the third transmission wheel 705 rotates in the reverse direction, the other pull rope 706 is tightened, pulling the first transmission wheel 703 to rotate in the reverse direction, and the gate 5 rotates to reset in the opposite direction. Through the above transmission mechanism, one shaft of the dual-axis motor 701 can realize the bidirectional rotation drive of the gate 5.

[0024] In one embodiment, a transmission pulley belt assembly 707 is provided at the other shaft of the dual-axis motor 701, and a second connecting shaft that passes through the sleeve 401 is installed at the center of the bottom of the dimming plate 402. The second connecting shaft is connected to the moving end of the transmission pulley belt assembly 707 for transmission. Specifically, the transmission pulley belt assembly 707 includes two pulleys and a belt that is disposed on the two pulleys. The other shaft of the dual-axis motor 701 is coaxially connected to one of the pulleys, and the other pulley is coaxially connected to the second connecting shaft.

[0025] In specific implementation, the other shaft of the dual-shaft motor 701 is coaxially connected to one of the pulleys in the transmission belt assembly 707. When the dual-shaft motor 701 starts, the pulley rotates synchronously with the motor shaft and drives the other pulley to rotate through the belt, thereby driving the second connecting shaft and the dimming plate 402 to rotate synchronously. By selecting pulleys of different diameters or adding a gearbox, the rotation direction and rotation angle ratio of the dimming plate 402 relative to the gate 5 can be changed, so that the rotation angle of the dimming plate 402 is precisely matched with the rotation angle of the gate 5. The above-mentioned adjustment of the transmission direction and transmission ratio by changing the pulley diameter or setting a gearbox is common knowledge in the field.

[0026] In one embodiment, electromagnets 6 are installed on both the first partition 102 and the second partition 103, and the gate 5 can rotate to the corresponding posture and be magnetically attracted by the corresponding electromagnet 6.

[0027] In practice, when the gate 5 rotates to the closed position, the electromagnet 6 on the first partition 102 is energized to generate magnetic force, which attracts and fixes the gate 5 in the closed position, preventing the gate 5 from loosening or deflecting unexpectedly under the impact of water flow. When it is necessary to open the gate 5, the electromagnet 6 is de-energized and demagnetized, and the drive component 7 can drive the gate 5 to rotate and open. Similarly, when the gate 5 rotates to the fully open position, the electromagnet 6 on the second partition 103 is energized to attract and fix the gate 5 in the open position, ensuring that the gate 5 is stable and reliable in the fully open state, and avoiding the gate 5 shaking due to water flow pulsation, which would affect the flow stability.

[0028] The dual-axis motor 701, lighting component 3 and electromagnet 6 mentioned above are all power-requiring devices. In this embodiment, the power-requiring devices are all powered by existing power supplies. Their specific power supply connection methods and control circuits are common knowledge in the field and will not be described in detail here.

[0029] In one embodiment, the fishway module 1 further includes a branch guide channel 104 installed on the side wall of the fish passage 101. The side wall of the fish passage 101 also has two openings that communicate with the two ends of the branch guide channel 104. Each opening is fitted with a filter plate 105 that can slide up and down. A ventilation component 8 is provided at the branch guide channel 104 and the support 2. The ventilation component 8 can be activated and drive the air flow at the fishway module 1 when water flows through the branch guide channel 104.

[0030] In practice, some of the water in the fish passage 101 flows into the branch guide channel 104 through one of the openings. After flowing through the branch guide channel 104, it flows back to the fish passage 101 through the other opening. The filter plate 105 is slidably embedded in the opening to filter the water flowing in and out of the branch guide channel 104, preventing larger impurities from entering the branch guide channel 104 with the water flow and causing blockage. The staff only needs to clean the filter plate 105. When there is water flowing through the branch guide channel 104, the water flow drives the ventilation component 8 to start, driving the air flow at the fish passage module 1, which plays a role in ventilation. When there is no water flowing in the branch guide channel 104, the ventilation component 8 stops operating, thus realizing the automatic start and stop of the ventilation component 8 according to the presence or absence of water flow.

[0031] In one embodiment, the ventilation assembly 8 includes a first frame 801 installed in a branch guide trough 104, blades 802 rotatably mounted on the first frame 801, a gear transmission box 803 mounted on the first frame 801, a central shaft connected to the input end of the gear transmission box 803 mounted at the center of the blades 802, a third connecting shaft 804 provided at the output end of the gear transmission box 803, a ventilation section 805 mounted on a bracket 2, the third connecting shaft 804 connected to the input end of the ventilation section 805, and the ventilation section 805 mounted on the bracket 2 via a second frame 806.

[0032] In practice, when water flows through the branch guide channel 104, the water flow drives the blade 802 to rotate around its central axis. The central axis of the blade 802 inputs the rotational power to the gear transmission box 803. After the gear transmission box 803 changes speed and direction, the power is output from the output end to the ventilation section 805 through the third connecting shaft 804, driving the ventilation section 805 to rotate, thereby realizing the airflow at the fishway module 1. The greater the water flow velocity in the branch guide channel 104, the faster the rotation speed of the blade 802, and the greater the rotation speed of the ventilation section 805, resulting in a corresponding increase in ventilation volume. Conversely, a decrease in water flow velocity results in a corresponding decrease in ventilation volume. Through the above mechanical transmission, the ventilation volume is adaptively adjusted according to the water flow velocity in the branch guide channel 104 without the need for external power or control, effectively utilizing the energy of the water flow.

[0033] In one embodiment, a lighting method for high-altitude fish passages is also included, specifically comprising the following steps: S1. Real-time monitoring of water flow velocity in fish tank 101 to determine current flow velocity conditions; S2. When the water flow velocity is within the normal flow velocity range, which corresponds to the active upstream migration state of fish, the gate 5 remains closed, the vertical gap is partially open, and the fish passage 101 allows flow through a partial cross section; the dimming plate 402 remains in its initial position, the light-transmitting port 403 is aligned with the preset initial dimming part 404, and the emitted light from the lighting component 3 is filtered by the initial dimming part 404 and then illuminates the vertical gap and the middle area of ​​the fish passage 101 with the first light color. The first light color is used to induce fish to enter the fish passage and continue to migrate upstream; the water flow in the tributary guide channel 104 drives the blade 802 to rotate, and the blade 802 drives the gear transmission box 803 through the central shaft. The gear transmission box 803 drives the ventilation part 805 to rotate through the third connecting shaft 804, so that the air at the fish passage module 1 flows. S3. When the water flow velocity exceeds the normal flow velocity range and reaches an abnormal flow velocity condition, which corresponds to the stress and risk avoidance state of fish, the control drive component 7 is activated: S300, the drive assembly 7 drives the gate 5 to rotate relative to the first partition 102, so that the end of the gate 5 moves closer to the end of the second partition 103 on the opposite side, opening the corresponding vertical gap, so that both vertical gaps are fully opened, increasing the flow area of ​​the fish passage 101 to reduce the water flow velocity in the fish passage 101. S301. While the drive assembly 7 drives the gate 5 to rotate, the drive assembly 7 synchronously drives the dimming plate 402 to rotate relative to the sleeve 401 through the transmission connection. The light-transmitting port 403 switches to be aligned with another set of dimming parts 404 as the dimming plate 402 rotates. The light emitted by the lighting assembly 3 is filtered by the dimming part 404 and then switched from the first light color to the second light color to illuminate the vertical gap and the middle area of ​​the fish passage 101. The second light color is used to assist in guiding the fish to adjust their migratory behavior to adapt to the water flow state under the abnormal flow rate conditions. S4. When the water flow velocity drops back to the normal flow velocity range, the drive component 7 reverses its rotation, causing the gate 5 to rotate in the opposite direction and reset. The vertical gap is restored to a partially open state. At the same time, the dimming plate 402 rotates in the opposite direction and resets. The emitted light of the lighting component 3 switches from the second light color back to the first light color, so that the fish return to the active upstream migration state under normal flow velocity conditions.

[0034] In practice, the above method drives the gate 5 and the dimming plate 402 to rotate simultaneously through the driving component 7, so that the flow rate adjustment and light color switching are synchronized. Under different flow rate conditions, it provides clear environmental signals for fish, thereby effectively alleviating the difficulty of fish in orientation recognition in dark tunnels and improving the success rate of fish passing through under complex hydraulic conditions.

[0035] In one embodiment, the real-time monitoring of the water flow velocity in the fish-walking tank 101 in step S1 specifically involves: A flow velocity sensor is installed in the fish tank 101 to collect flow velocity signals in real time, and the current flow velocity condition is determined based on the collected flow velocity signals.

[0036] In practice, the flow velocity sensor collects the water flow velocity signal in the fish tank 101 in real time and transmits it to the control system. The control system judges the current flow velocity condition based on the received flow velocity signal and controls the start, stop and operation direction of the drive component 7 according to the judgment result.

[0037] In one embodiment, the normal flow velocity range is the suitable flow velocity range for fish migration; Abnormal flow velocity range is the flow velocity range that is higher than the upper limit of the suitable flow velocity range.

[0038] In practice, the normal flow velocity range is the suitable flow velocity range for fish migration, corresponding to the active upstream migration state of fish. At this time, the drive component 7 is not started. The abnormal flow velocity range is the flow velocity range that is higher than the upper limit of the suitable flow velocity range, corresponding to the stress avoidance state of fish. At this time, the drive component 7 is started and drives the gate 5 and the dimming plate 402 to move synchronously.

[0039] Example 1: A lighting method for fish passages at high altitudes includes the following steps: S1. Monitor the water flow velocity in the fish tank 101 in real time and determine the current flow velocity condition.

[0040] S2. When the water flow velocity is within the normal flow velocity range, the gate 5 remains fully closed, the channel on the side of the fish passage 101 is closed, and the fish only pass through the main channel in the middle of the fish passage 101; the dimming plate 402 remains in the initial position, the light emitted by the lighting component 3 corresponding to the channel on the side of the fish passage 101 is no light or dim light, and the middle of the fish passage 101 is illuminated with blue light, using the attraction of blue light to guide the fish to swim upstream along the main channel.

[0041] S3. When the water flow velocity exceeds the normal flow velocity range and reaches an abnormal flow velocity condition, the gate 5 opens, the channel on the side of the fish tank 101 opens, and fish can pass through the main channel and the side channel at the same time. The drive component 7 simultaneously drives the gate 5 and the dimming plate 402 to rotate. S300 and drive component 7 drive gate 5 to rotate and open. The opening degree of gate 5 is adapted to the change in flow rate. The higher the flow rate, the greater the opening degree of gate 5. The flow area of ​​the side channel increases with the increase of the opening degree of gate 5 to share the flow pressure of the main channel and reduce the overall water flow velocity in the fish tank 101.

[0042] S301. While the drive assembly 7 drives the gate 5 to rotate, the drive assembly 7 also synchronously drives the dimming plate 402 to rotate via a transmission connection. The rotation angle of the dimming plate 402 is synchronized with the opening of the gate 5: when the gate 5 is slightly open, the dimming plate 402 rotates to the first angle, and the side channel is illuminated with low-intensity green light to induce fish to explore the side channel; when the gate 5 is half open, the dimming plate 402 rotates to the second angle, and the side channel is illuminated with medium-bright yellow light to guide the fish to divert into the side channel; when the gate 5 is fully open, the dimming plate 402 rotates to the third angle, and the side channel is illuminated with high-brightness orange-red or red light to encourage the fish to quickly pass through the side channel. The light color of the main channel gradually transitions from blue light to neutral dim light as the gate opening increases, gradually reducing the guiding intensity for the fish and allowing the fish to naturally divert to the side channels.

[0043] S4. When the water flow rate drops back to the normal flow rate range, the drive component 7 rotates in reverse, driving the gate 5 to rotate in reverse and reset to the fully closed state. The side channel is closed, and the fish return to the main channel for passage. At the same time, the dimming plate 402 rotates in reverse and resets, the side channel returns to no light or dark light, and the main channel returns to blue light illumination.

[0044] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] Additionally, "multiple" refers to two or more.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lighting device for use in high-altitude fish passages, characterized in that, include: Multiple fishway modules (1) are connected sequentially and interconnected along a set direction to form a tunnel fishway; The fishway module (1) includes a fish passage trough (101), which is open on both sides. Each fish passage trough (101) has a first partition (102) vertically installed on both open sides. The inner wall of the fish passage trough (101) is provided with a plurality of second partitions (103) that are staggered from each of the first partitions (102). The two ends of the first partition (102) have vertical gaps between them and the corresponding second partitions (103) to allow fish to pass through. A bracket (2) is mounted on the fishway module (1); A lighting component (3) is mounted on the bracket (2), with the lighting end of the lighting component (3) facing the fish passage (101) to provide lighting to the vertical gaps and the central area of ​​the fish passage (101); The light-shielding assembly (4) includes a sleeve (401) disposed at the bottom of the lighting assembly (3) and a dimmer plate (402) rotatably disposed within the sleeve (401), the dimmer plate (402) being located between the lighting assembly (3) and the fishway module (1); The dimming plate (402) is circular, and multiple dimming parts (404) with different hues are arranged sequentially along its circumference. The dimming plate (402) has a light-transmitting opening (403), and the light-transmitting opening (403) corresponds to the position of one of the dimming parts (404). The dimming plate (402) can rotate relative to the sleeve (401) so that different groups of dimming parts (404) are selectively aligned with the lighting end of the lighting component (3), thereby changing the emitted light color of the lighting component (3). A gate (5) is rotatably mounted on the first partition (102). The gate (5) can be rotated to contact the corresponding second partition (103) to block the corresponding vertical gap. The drive assembly (7) is capable of driving the gate (5) to rotate and also driving the dimming plate (402) to rotate.

2. The lighting device for high-altitude fish passages according to claim 1, characterized in that: The drive assembly (7) includes a dual-axis motor (701) mounted on the bracket (2). A first connecting shaft (702) is provided at one of the shafts of the dual-axis motor (701). A first transmission wheel (703) is provided at the rotatable connection between the gate (5) and the first partition (102). A second transmission wheel (704) is rotatably mounted on the second partition (103). A third transmission wheel (705) is rotatably mounted on the first partition (102) and coaxially connected to the first connecting shaft (702). Two pull ropes (706) are wound around the third transmission wheel (705) and are staggered and wound in opposite directions. One of the pull ropes (706) is fixedly connected to the first transmission wheel (703) after passing through the second transmission wheel (704), and the other pull rope (706) is fixedly connected to the first transmission wheel (703).

3. The lighting device for high-altitude fish passages according to claim 2, characterized in that: A transmission wheel belt assembly (707) is provided at the other shaft of the dual-axis motor (701), and a second connecting shaft is provided at the center of the bottom of the dimming plate (402) and inserted into the sleeve (401). The second connecting shaft is connected to the moving end of the transmission wheel belt assembly (707) for transmission.

4. The lighting device for high-altitude fish passages according to claim 1, characterized in that: Electromagnets (6) are provided on the first partition (102) and the second partition (103), and the gate (5) can rotate to the corresponding posture and be magnetically attracted by the corresponding electromagnet (6).

5. The lighting device for high-altitude fish passages according to claim 1, characterized in that: The fish passage module (1) also includes a branch guide channel (104) provided on the side wall of the fish passage channel (101). The side wall of the fish passage channel (101) also has two openings that communicate with the two ends of the branch guide channel (104), and each opening is fitted with a filter plate (105) that can slide up and down. Ventilation components (8) are provided at the branch channel (104) and the support (2). The ventilation components (8) can be activated and drive the air flow at the fishway module (1) when water flows through the branch channel (104).

6. A lighting device for high-altitude fish passages according to claim 5, characterized in that: The ventilation assembly (8) includes a first frame (801) disposed in the branch guide channel (104), blades (802) are rotatably disposed on the first frame (801), a gear transmission box (803) is disposed on the first frame (801), a central shaft connected to the input end of the gear transmission box (803) is disposed at the center of the blades (802), a third connecting shaft (804) is disposed at the output end of the gear transmission box (803), a ventilation part (805) is disposed on the bracket (2), the third connecting shaft (804) is connected to the input end of the ventilation part (805), and the ventilation part (805) is mounted on the bracket (2) through a second frame (806).

7. A lighting method for high-altitude fish passages, comprising the lighting device for high-altitude fish passages as described in claims 1-6, characterized in that, Includes the following steps: S1. Monitor the water flow velocity in the fish tank (101) in real time and determine the current flow velocity condition; S2. When the water flow velocity is within the normal flow velocity range, which corresponds to the fish actively swimming upstream, the gate (5) remains closed, the vertical gap is partially open, and the fish passage (101) flows through a partial cross section; the dimming plate (402) remains in its initial position, the light-transmitting port (403) is aligned with the preset initial dimming part (404), and the light emitted by the lighting component (3) is filtered by the initial dimming part (404) and illuminates the vertical gap and the middle area of ​​the fish passage (101) with the first light color. The first light color is used to induce fish to enter the fish passage and continue to swim upstream; the water flow in the tributary guide channel (104) drives the blade (802) to rotate, and the blade (802) drives the gear transmission box (803) through the central shaft. The gear transmission box (803) drives the ventilation part (805) to rotate through the third connecting shaft (804), so that the air at the fish passage module (1) flows; S3. When the water flow velocity exceeds the normal flow velocity range and reaches the abnormal flow velocity condition, the abnormal flow velocity condition corresponds to the fish's stress avoidance state, and the control drive component (7) is activated: S300, the drive assembly (7) drives the gate (5) to rotate relative to the first partition (102), so that the end of the gate (5) moves closer to the end of the second partition (103) on the opposite side, opening the corresponding vertical gap, so that both vertical gaps are fully opened, increasing the flow area of ​​the fish passage (101) to reduce the water flow velocity in the fish passage (101); S301. While the drive assembly (7) drives the gate (5) to rotate, the drive assembly (7) synchronously drives the dimming plate (402) to rotate relative to the sleeve (401) through the transmission connection. The light-transmitting port (403) switches to be aligned with another set of dimming parts (404) as the dimming plate (402) rotates. After the light emitted by the lighting assembly (3) is filtered by the dimming part (404), the light color is switched from the first light color to the second light color and illuminates the vertical gap and the middle area of ​​the fish passage (101). The second light color is used to assist in guiding the fish to adjust their migratory behavior to adapt to the water flow state under the abnormal flow rate conditions. S4. When the water flow velocity drops back to the normal flow velocity range, the drive component (7) reverses its rotation, causing the gate (5) to rotate in the opposite direction and reset. The vertical gap is restored to a partially open state. At the same time, the dimming plate (402) rotates in the opposite direction and resets. The emitted light of the lighting component (3) switches from the second light color back to the first light color, so that the fish return to the active upstream migration state under normal flow velocity conditions.

8. The illumination method for high-altitude fish passages according to claim 7, characterized in that: The real-time monitoring of the water flow velocity in the fish tank (101) in step S1 specifically involves: A flow velocity sensor is installed in the fish tank (101) to collect flow velocity signals in real time, and the current flow velocity condition is determined based on the collected flow velocity signals.

9. A lighting method for high-altitude fish passages according to claim 7, characterized in that: The normal flow velocity range is the suitable flow velocity range for fish migration; The abnormal flow velocity range is the flow velocity range that is higher than the upper limit of the suitable flow velocity range.

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