A fish guiding device and method

Abstract

The application discloses a fish guiding device and method, and belongs to the technical field of fishery conservation or fishing. The device comprises a floating body device and a sinking body device; the sinking body device is an equilateral triangular prism, the side prism and the triangular side of the equilateral triangular prism are provided with biological attachment surfaces for forming natural bait fields, a light induction unit is installed on the side prism, and a sound induction unit is installed on the triangular side, which are used for emitting light signals and sound signals to induce fish schools to gather around the triangular prism and move upwards along the triangular prism; the floating body device is a ring-shaped floating body, the outer surface of the ring-shaped floating body is provided with a biological attachment surface for cultivating surface plankton to assist in guiding fish, a solar power generation unit is installed on the top of the ring-shaped floating body, and a wave power generation unit is installed in the middle of the ring-shaped floating body, which are used for supplying power to the fish guiding device; the fish guiding device further comprises a controller, which is used for dynamically regulating the output power of the sound signals and the light signals and for dynamically regulating the electric energy provided by the solar power generation unit and / or the wave power generation unit for the fish guiding device.

Description

Technical Field

[0001] This application relates to the field of fisheries conservation or fishing technology, and in particular to a fish guiding device and method. Background Technology

[0002] In the fields of artificial reef marine ranching and inland reservoir aquaculture, fish guiding is a specialized operational method distinct from simple fish attraction. Fish attraction aims to gather a large number of fish around the equipment, while fish guiding uses controllable physical signals such as light and sound to directionally regulate the vertical distribution of fish schools, smoothly guiding bottom-dwelling fish to the middle layer of the water. This serves both ecological selective fishing operations, reducing bottom nets scraping against the reef and minimizing the accidental capture of juvenile fish; and it can also be used in the fisheries resource conservation stage to stabilize the habitat distribution of fish schools in the reef area, facilitating the breeding of fry and fingerlings. At the same time, by regulating signals to drive away predators, it can also protect fry and fingerlings, meeting the core needs of both production fishing and daily maintenance.

[0003] Currently, artificial reef marine ranches commonly employ bottom trawls, rakers, and fixed traps for bottom-dwelling economic fish fishing. These methods only exploit the bottom seabed, leaving the upper and middle layers largely undeveloped, making it difficult to achieve the industry's planned targets for three-dimensional marine yield. To guide bottom-dwelling fish to the upper layers, existing fish-attracting equipment primarily relies on a single, constantly lit LED light source or continuous sound waves for horizontal, single-point attraction. This only draws fish to the vicinity of the equipment and cannot drive the fish to move vertically upwards. Even if the fish do move upwards due to induction, their negative phototaxis may cause them to return to the bottom, failing to keep them stably in the middle-layer fishing area, resulting in low fish attraction efficiency. Furthermore, existing power supply solutions for offshore fish-attracting equipment have significant shortcomings. The cost of laying and maintaining shore-based submarine cables is high, diesel generators suffer from high fuel consumption, oil leakage polluting seawater, and excessive carbon emissions, and solar power equipment has short operating times during continuous rainy weather, failing to meet the needs of long-term unattended operation of fish-attracting equipment. Summary of the Invention

[0004] This application provides a fish-guiding device and method to solve at least one of the above-mentioned technical problems.

[0005] The technical solution adopted in this application is as follows: On one hand, this application provides a fish-guiding device, which includes a floating device and a sinking device; the sinking device is an equilateral triangular pyramid, with the lateral prisms and triangular lateral faces of the equilateral triangular pyramid serving as biological attachment surfaces to form a natural feeding ground; light-inducing units are installed on the lateral prisms and sound-inducing units are installed on the triangular lateral faces to emit light and sound signals to induce fish to gather towards the triangular pyramid and move upward along the triangular pyramid; the floating device is an annular float, with the outer surface of the annular float serving as a biological attachment surface to cultivate surface plankton to assist in fish guidance; a solar power generation unit is installed at the top of the annular float and a wave power generation unit is installed in the middle to provide power to the sound-inducing and light-inducing units on the triangular pyramid; the fish-guiding device also includes a controller for dynamically controlling the output power of the sound and light signals, and for dynamically controlling the power provided by the solar power generation unit and / or the wave power generation unit to the sound and light-inducing units.

[0006] This implementation proposes a fish-guiding device comprising a floating body and a sinking body. The sinking body utilizes an equilateral triangular pyramid. Compared to conventional square reefs and cuboid reefs, the equilateral triangular pyramid has a smaller upstream area, lower water resistance, and lower structural stress under the same ocean current conditions. This significantly improves its resistance to wind and wave fatigue and ocean current impact. Furthermore, the absence of 90° right-angle protrusions in the equilateral triangular pyramid reduces the risk of snagging and damage to fishing nets, and also avoids damage to the artificial reef itself. Simultaneously, all four triangular lateral faces and three lateral prisms of the pyramid can serve as bio-attachment surfaces, resulting in a larger attachment area for the same volume. This allows for the attachment of algae, plankton, and small benthic organisms over a large area, forming a natural bait field. Combined with acoustic and light signals, this constitutes a triple attraction system, effectively improving fish-attracting efficiency. The light-inducing unit is installed on the side prisms of an equilateral triangular pyramid, allowing the light to be distributed vertically along the prisms. The sound-inducing unit is installed on the triangular side of the equilateral triangular pyramid. When the sound-inducing and light-inducing units work together, they can form a vertical gradient field that is stronger at the bottom and weaker at the top. This not only attracts fish from the bottom reef area to the pyramid from a distance, but also continuously guides the fish upwards along the pyramid. This solves the problem of traditional fish-attracting equipment that can only attract fish horizontally and cannot guide them in layers, resulting in the upper and middle layers of the water being idle, thus enabling three-dimensional development of the sea or water area. The floating device uses a ring-shaped float. The roughened outer wall of the ring-shaped float serves as a biological attachment surface for cultivating surface plankton. Combined with the natural food field formed by the underwater triangular pyramid, this helps to further extend the stay time of the fish. The top solar power generation unit and the middle wave power generation unit of the ring-shaped float complement each other, overcoming the shortcomings of existing offshore equipment such as short endurance of single solar power, pollution from diesel power generation, and high costs of shore power cabling. This enables the fish-guided device to have long-term self-sufficient power supply offshore. Meanwhile, the fish guide device also includes a controller, which is used to dynamically adjust the audio-visual output power and precisely control the buoyancy of the fish school. This prevents the fish school from sinking and escaping, as well as from rising too high and dispersing on the surface. On the other hand, it is used to dynamically schedule the power generation output of solar and wave energy. It automatically allocates power supply priority according to sunlight, waves, etc., and optimizes the charging and discharging strategy of the fish guide device. This allows the fish guide device to maintain basic operation for a long time even under extreme cloudy, rainy, and waveless conditions. While achieving long-term self-sufficient power supply offshore, it also effectively reduces the frequency and cost of offshore operation and maintenance.

[0007] In one possible implementation, the acoustic induction unit is mounted below the midpoint of the triangular side surface.

[0008] In this implementation, by placing the acoustic induction unit below the midpoint of the triangular side, the acoustic signal emitted by the unit is close to the bottom of the water and near the artificial reef habitat, making it easier for scattered fish at the bottom to be attracted to the periphery of the triangular pyramid by the sound waves. At the same time, the acoustic induction unit is located in the lower middle part of the triangular pyramid, and the sound waves can form a natural upward acoustic gradient when propagating upward. Combined with the vertically distributed optical induction units, this can work together to pull the fish to the surface, further improving the vertical fish guiding effect.

[0009] In one possible implementation, the submerged device is further equipped with an underwater camera and an underwater sonar; wherein, the underwater camera is used to identify the fish species in the waters where the fish guide device is deployed, and the underwater sonar is used to collect the fish density within a preset range of the submerged device; the controller is used to dynamically adjust the acoustic signal and the optical signal according to the fish species and / or the fish density.

[0010] In this implementation, different economically important fish species, such as red sea bream, black sea bream, carp, and crucian carp, exhibit vastly different sensitivities to light wavelengths, flash periods, and sound frequencies. After real-time identification of the dominant fish species using an underwater camera, the controller adjusts the acoustic and optical signals. This allows the fish-guiding device to adapt to the fish species in the current waters, improving guidance efficiency. Furthermore, it automatically matches the optimal acoustic and optical parameters based on the fish species, eliminating the need for manual on-site adjustments. This makes the fish-guiding device compatible with various scenarios, including nearshore seawater and inland freshwater, enhancing its applicability and overcoming the shortcomings of traditional equipment with fixed parameters and poor fish species compatibility. By collecting fish school density data using underwater sonar, the controller adjusts the acoustic and optical signals accordingly. For example, the controller automatically adjusts the acoustic and optical power based on the fish school density. At low densities, the power is increased to expand the attraction range, while at high densities, the power is reduced to prevent fish from escaping due to strong light and sound stress. This forms a real-time feedback loop for fish guidance, improving the attraction stability of the device and helping to keep the fish school stable in the mid-water layer.

[0011] On the other hand, this application also provides a fish-guiding method, using a fish-guiding device as described in any of the above implementations. The method includes: determining preset deployment points in the water area to be guided, and setting the fish-guiding device at the preset deployment points; wherein the preset deployment points are distributed in a matrix in the area to be guided, and there is a preset distance between each preset deployment point; determining the current power generation condition based on current environmental information, and regulating the charging and discharging of the fish-guiding device according to the current power generation condition; controlling the light-inducing unit of the fish-guiding device to emit a first light signal according to the current environmental information, and controlling the acoustic-inducing unit of the fish-guiding device to emit a first acoustic signal according to the first light signal; wherein the first light signal and the first acoustic signal are time-displaced or time-overlapping; using the underwater sonar of the fish-guiding device to collect the fish school aggregation density, and when the fish school aggregation density is greater than a preset density threshold, adjusting the first acoustic signal and the first light signal so that the aggregated fish school moves upward along the sinking device of the fish-guiding device and remains in the middle layer of the water body in the water area to be guided; wherein the middle layer of the water body is the 8-15m range of the water area to be guided.

[0012] Based on the aforementioned fish-guiding device, this application proposes a fish-guiding method. First, the fish-guiding device is installed at predetermined locations in the target waters. By using a matrix distribution of these predetermined locations at predetermined distances, the acoustic and optical signals of multiple fish-guiding devices can be made independent, forming a continuous and three-dimensional fish-attracting field across the entire reef area. This method can concentrate large, dispersed fish schools into a designated fishing area, suitable for large-scale operations in marine ranches and reservoir aquaculture areas. Then, differentiated power supply strategies are implemented for three operating conditions: strong light, weak light with waves, and no waves or light, to regulate the charging and discharging of the fish-guiding devices. Next, the fish-guiding devices emit a first optical signal based on the current environmental information, followed by a first acoustic signal. The timing of the first optical and acoustic signals is staggered or overlapped, meaning that the acoustic and optical signals do not simultaneously provide high-intensity, continuous stimulation. This avoids fish developing visual or auditory adaptations from long-term exposure to a single, fixed stimulus, which could affect the efficiency of attracting or guiding fish. Furthermore, by creating a three-dimensional signal field through alternating or synergistic acoustic and optical stimulation, the dwell time of the fish schools is effectively extended. During this process, underwater sonar is used to collect fish density data. When the fish density is high, the first acoustic and optical signals are adjusted to keep the fish in the middle layer of the water. On the one hand, by adjusting the acoustic and optical parameters, the fish are stably confined to the middle layer of the water at a depth of 8-15 meters, keeping them away from the artificial reef at the bottom. Fishing can then be done using only middle-layer purse seines and gillnets, without the nets coming into contact with the reef, thus avoiding the problems of traditional bottom trawls and gillnets that scratch or damage the reef structure. On the other hand, this improves the utilization rate of the upper and middle layers of unused water, increasing fishery output per unit area. Furthermore, selective fishing in the middle layer filters out juvenile fish, significantly reducing the rate of bycatch compared to bottom fishing, resulting in outstanding ecological protection effects. These outstanding ecological protection effects are also beneficial for the breeding and continued cultivation of fish fry.

[0013] In one possible implementation, the current environmental information includes the current light intensity and the current wave information; the current power generation condition is determined based on the current environmental information, and the fish-guiding device is charged and discharged according to the current power generation condition, including: if the current light intensity is greater than a preset intensity threshold, the current power generation condition is determined to be that the solar power generation unit is the main power source and the wave power generation unit is the auxiliary power source, and the fish-guiding device is controlled to discharge using the solar power generation unit, and to charge using the discharge surplus of the solar power generation unit and the wave power generation unit; if the current light intensity is less than the preset intensity threshold, and the current wave information indicates the presence of waves, the current power generation condition is determined to be that the wave power generation unit is the power source, and the fish-guiding device is controlled to discharge using the wave power generation unit, and to charge using the discharge surplus; if the current light intensity is less than the preset intensity threshold, and the current wave information indicates no waves, the current power generation condition is determined to be no power source, and the fish-guiding device is controlled to lower its discharge lower limit threshold, while simultaneously lowering and retaining only the basic load of the acoustic induction unit and the light induction unit.

[0014] In this implementation, the solar power generation unit is maximized when there is sufficient sunlight, and the generated power is prioritized to supply the acoustic and light loads. Excess power is stored in the energy storage battery to fully store daytime solar energy and reserve power for nighttime and cloudy / rainy periods, thus maximizing energy utilization. In low-light and wave conditions, the wave energy power supply unit continuously generates power to ensure the uninterrupted operation of the acoustic and light guidance unit, compensating for the downtime of pure solar equipment at night and on cloudy days. At the same time, the surplus power generated is automatically stored to cope with short-term calm conditions. In extreme energy-deprived conditions, such as continuous rain and calm seas, the fish guide device automatically disconnects non-core peripherals such as water quality sensors and underwater cameras, retaining only the basic load of the acoustic and light guidance unit. Simultaneously, the lower limit threshold of battery discharge is lowered to prevent battery over-discharge damage while allowing for greater battery discharge, maximizing the self-sustaining operation time of the fish guide device. This means that the device does not need to be urgently retrieved even in extreme conditions, achieving long-term self-sustaining power supply offshore and reducing emergency operation and maintenance costs at sea.

[0015] In one possible implementation, when the wave energy generation unit is the power source, the wave energy generation unit oscillates back and forth with the waves, converts the mechanical energy of the waves into hydraulic energy through a hydraulic pump, and then converts the hydraulic energy into electrical energy through a hydraulic generator; the method further includes: obtaining the wave height in the current wave information, and adjusting the hydraulic damping of the wave energy generation unit according to the wave height; wherein the wave height is positively correlated with the hydraulic damping.

[0016] In this implementation, the hydraulic damping of the wave energy generation unit is dynamically adjusted according to the wave height. At low wave heights, the hydraulic damping is reduced, allowing the pendulum to swing freely without hydraulic pressure constraints, increasing the swing amplitude and maximizing the capture of weak wave energy, thus improving power generation efficiency under weak wave conditions. At high wave heights, the hydraulic damping is increased to limit the swing amplitude of the pendulum, preventing it from colliding with the annular float or overloading the hydraulic system. This balances power generation efficiency with structural safety, addressing the dual shortcomings of traditional fixed-damping wave energy devices: easy damage in large waves and low power generation in small waves. Optionally, the hydraulic damping can be adjusted in real-time via an electronically controlled throttle valve, offering a fast response and enabling real-time dynamic adjustment following the waves without manual intervention, making it suitable for long-term unattended offshore operations of fish guide devices.

[0017] In one possible implementation, the current environmental information includes the current light intensity and the current fish species information identified by the underwater camera of the fish guide device; controlling the light-inducing unit of the fish guide device to emit a first light signal according to the current environmental information includes: determining the light band and light flicker period according to the fish species information; controlling the light-inducing unit of the fish guide device to emit the first light signal according to the light band and light flicker period; adjusting the output power of the first light signal according to the current light intensity; wherein, the current light intensity is negatively correlated with the output power of the first light signal.

[0018] In this implementation, when the light-inducing unit emits the first light signal, the light band and flashing period are first determined based on the current fish species information. This ensures that the parameters of the light signal accurately match the visual sensitivity range of the current fish species. Compared to uniform, fixed light parameters, this increases the fish aggregation density, eliminates the defect of poor fish species compatibility, and allows the fish guiding device to be adapted to different fish species in both saltwater and freshwater environments. Then, the output power of the first light signal is adjusted in a negative correlation with the current light intensity. For example, when the current light intensity is high, the output power of the first light signal is reduced to decrease its intensity. This avoids fish escaping due to their negative phototropism caused by excessive underwater brightness, while also reducing energy consumption and extending the energy storage life of the fish guiding device, thus balancing fish guiding effectiveness and energy conservation.

[0019] In one possible implementation, the light-inducing unit includes a plurality of LEDs spaced apart along the side prism, wherein the plurality of LEDs are blue-green composite light sources and the underwater working illuminance of the blue-green composite light sources is 0.3~0.8 lx; controlling the light-inducing unit of the fish-guiding device to emit a first light signal further includes: controlling the output power of the plurality of LEDs to attenuate gradually from bottom to top along the side prism to form a gradual light field in the water area to be guided.

[0020] In this implementation, the light-inducing unit uses LEDs with blue-green light sources. 480nm blue light and 520nm green light are the most visually sensitive wavelengths for nearshore and freshwater fish. The underwater illuminance is stably controlled at 0.3~0.8 lx, making the attraction effect far superior to ordinary light sources such as white light and red light. This allows the fish-guiding device or method of this application to be compatible with the phototactic characteristics of most commercially valuable fish species. Furthermore, by controlling the output power of multiple LEDs to decrease gradually from bottom to top, the lower part of the cone has high light power and ample illumination, attracting bottom-dwelling fish to gather towards the cone. The light power gradually decreases upwards, resulting in softer illumination in the upper water layer, forming a natural upward-pulling light gradient. This prevents the fish from being stressed by the strong light from the upper layer and scattering to the surface, thus stabilizing the fish in the middle-layer fishing area. This achieves three-dimensional, layered fish guidance, effectively solving the problem that traditional uniform lighting cannot control the vertical height of the fish population.

[0021] In one possible implementation, controlling the acoustic induction unit of the fish-guiding device to emit a first acoustic signal based on the first optical signal includes: acquiring the current fish-guiding scenario remotely input by the user, and selecting a corresponding acoustic wave from a preset acoustic wave library according to the current fish-guiding scenario; wherein the current fish-guiding scenario includes at least a fishing scenario, a daily maintenance scenario, and a juvenile fish protection scenario, and the corresponding acoustic wave includes at least an acoustic wave type, an acoustic wave frequency, and an acoustic wave pulse width; determining the emission timing of the corresponding acoustic wave based on the optical flashing period of the first optical signal, so that the emission timing is misaligned or overlapped with the optical flashing period timing; and controlling the acoustic induction unit of the fish-guiding device to emit the first acoustic signal according to the corresponding acoustic wave and the emission timing.

[0022] In this implementation, when the acoustic induction unit emits the first acoustic signal, it distinguishes between three fish-guiding scenarios: fishing, routine maintenance, and juvenile fish protection. It then retrieves the corresponding acoustic wave from a sound wave library. For example, in the fishing scenario, it outputs a 300-500Hz feeding pulse acoustic wave to efficiently attract adult fish for ecological harvesting; in the routine maintenance scenario, it outputs a low-frequency soothing acoustic wave to maintain stable habitat for fish in the reef area and restore fishery resources; and in the juvenile fish protection scenario, it outputs a mild repulsion acoustic wave to drive away predatory large fish and protect fry and fingerlings in the reef area. This significantly improves the adaptability of the fish-guiding device or method of this application. Then, the timing of the first acoustic signal is determined based on the flashing period of the first optical signal, ensuring that the first optical signal and the first acoustic signal have a timing misalignment or overlap. This results in a continuous dynamic change in the stimulation signal to the fish in the water, preventing the fish from developing tolerance or escaping due to long-term exposure to fixed or single acoustic and light signals, thus improving the efficiency of attracting or guiding fish. Optionally, the first sound signal uses a short pulse of less than 3ms, which is different from continuous long sound waves. This can reduce auditory fatigue in fish and prolong the time fish stay in the attracting area.

[0023] In one possible implementation, after collecting the fish density using the underwater sonar of the fish guide device, the method further includes: increasing the output power of the first optical signal and the first acoustic signal when the fish density is less than a preset density threshold; and decreasing the output power of the first optical signal and the first acoustic signal when the fish density is greater than the preset density threshold, and increasing the output power attenuation gradient of the plurality of LEDs along the side prism.

[0024] In this implementation, during the fish-guiding process, underwater sonar is used to collect the fish school density. When the fish school density is low, the output power of the first acoustic and optical signals is increased, and the brightness of the lights and the sound pressure of the sound waves are increased simultaneously to expand the acoustic and optical radiation radius, attracting the dispersed fish from the periphery to quickly gather towards the triangular pyramid from a distance, thus improving the fish gathering efficiency. When the fish school density is high, the acoustic and optical power is reduced to avoid the fish from scattering due to stress caused by strong light and sound. At the same time, the power attenuation gradient of the LED lights from bottom to top is increased to further compress the light intensity of the upper water layer and strengthen the vertical light field constraint, thereby preventing the fish from scattering after rising to the surface water layer. This helps to continuously stabilize the fish school in the middle water layer at 8-15m, which can improve both the fish-guiding and fishing efficiency, as well as the utilization rate of the middle water layer. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This application provides a schematic diagram of the structure of a fish-guiding device; Figure 2 This application provides a schematic diagram of the structure of a wave energy generation unit; Figure 3 A flowchart of a fish-guiding method provided in this application; In the attached diagram: 10-sinking device, 101-light-inducing unit, 102-sound-inducing unit; 20-floating device, 201-solar power generation unit, 202-wave power generation unit, 2021-swinging plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0027] As the fish-guiding device in this application, such as Figure 1 The device includes a sinking device 10 and a floating device 20. The sinking device 10 is a triangular pyramid, preferably an equilateral triangular pyramid. The lateral prisms and triangular sides of the equilateral triangular pyramid are set as biological attachment surfaces, which can attach algae, plankton, and small benthic organisms over a large area, forming a natural feeding ground. A light-inducing unit 101 is installed on the lateral prisms, and an acoustic-inducing unit 102 is installed on the triangular sides. When guiding fish, the light-inducing unit 101 and the acoustic-inducing unit 102 generate light and sound signals, inducing fish to gather towards the triangular pyramid and move upward along the pyramid. This solves the problem that traditional fish-attracting devices can only gather fish horizontally and cannot guide them in layers, resulting in idle upper and middle layers of the water, thus realizing three-dimensional development of the sea or water area. In this embodiment, the submerged body device adopts an equilateral triangular pyramid. Compared with conventional square reefs and cuboid reefs, the equilateral triangular pyramid has a smaller upstream area, lower water resistance, and lower structural stress under the same ocean current conditions. This significantly improves its resistance to wind and wave fatigue and ocean current impact. Furthermore, the absence of 90° right-angle protrusions in the equilateral triangular pyramid makes it less likely for fishing nets to snag and break, and also avoids damage to the artificial reef itself. The floating body device 20 uses an annular float. The roughened outer wall of the annular float serves as a biological attachment surface for cultivating surface plankton. Combined with the natural feeding ground formed by the underwater triangular pyramid, this further extends the fish's dwell time. The top of the annular float 20 is equipped with a solar power generation unit 201, and the middle or annular hollow section is equipped with a wave power generation unit 202. Through the complementary cooperation of the solar power generation unit 201 and the wave power generation unit 202, the fish guiding device can be adapted to various power generation conditions, achieving long-term self-sufficient power supply offshore.

[0028] Furthermore, the fish guiding device in this embodiment also includes a controller (not shown in the figure). The controller can control the output power of the acoustic induction unit 102 and the light induction unit 101. By precisely controlling the power, the rising height of the fish school can be prevented from sinking and escaping, and also prevented from rising excessively to the surface and dispersing. The controller can also regulate the power supply of the solar power generation unit 201 and the wave power generation unit 202, optimize the charging and discharging strategy of the fish guiding device, and help the fish guiding device achieve long-term self-sufficient power supply offshore.

[0029] Optionally, in this embodiment, the wave energy generation unit 202 of the fish-guiding device has the following structure: Figure 2 As shown, the system mainly includes a pendulum plate 2021 and a hydraulic system (not shown in the figure). When the fish guide device is powered by a wave energy generator unit, the pendulum plate 2021 oscillates back and forth with the waves. A hydraulic pump (not shown in the figure) converts the mechanical energy of the waves into hydraulic energy, and then a hydraulic generator (not shown in the figure) converts the hydraulic energy into electrical energy. It should be noted that the wave energy generator unit 202 can also be powered by a hydraulic system (not shown in the figure). Figure 2 Other existing pendulum structures shown can be implemented as long as they can convert wave energy into electrical energy; this embodiment does not limit the specific structure. Furthermore, both the wave energy conversion process and the solar energy conversion process can be implemented using existing algorithms or structures, which will not be elaborated upon here. The key point of this embodiment is that the fish guide device integrates a solar power generation unit and a wave energy power generation unit, enabling the fish guide device to adapt to various power generation conditions in different environments, achieve long-term self-sufficient power supply offshore, and reduce offshore operation and maintenance costs.

[0030] One possible approach is to position the acoustic induction unit below the midpoint of the triangular lateral surface. This allows the acoustic signal emitted by the unit to be close to the bottom of the water and the artificial reef habitat, making it easier for dispersed fish at the bottom to be attracted to the periphery of the pyramid. Simultaneously, the acoustic induction unit's placement in the lower-middle part of the pyramid creates a natural upward acoustic gradient as the sound waves propagate upwards. This, combined with vertically distributed optical induction units, can synergistically guide fish to the surface, further enhancing the vertical fish-guiding effect.

[0031] As one possible implementation, an underwater camera and an underwater sonar can also be installed on the submerged device, i.e., an equilateral triangular pyramid. The underwater camera can identify the fish species in the area where the fish-guiding device is deployed. This identification process can be implemented at the camera side using edge computing devices, or the image or video can be fed back to the controller of the fish-guiding device for identification. The specific identification process can be implemented using existing algorithms, which are not limited in this embodiment. The underwater sonar can collect the fish density within a preset range of the submerged device. This process can also be implemented using existing algorithms, which will not be elaborated in this embodiment. The controller can dynamically adjust the acoustic and optical signals based on the identified fish species and / or fish density during the fish-guiding process to improve the efficiency of fish guidance. This is because different economically important fish species, such as red sea bream, black sea bream, carp, and crucian carp, exhibit vastly different sensitivities to light wavelengths, flash periods, and sound frequencies. By using an underwater camera to identify the dominant fish species in real time, the controller adjusts the acoustic and optical signals. This allows the fish-guiding device to adapt to the fish species in the current waters, improving guidance efficiency. Furthermore, it automatically matches the optimal acoustic and optical parameters based on the fish species, eliminating the need for manual on-site adjustments. This makes the fish-guiding device compatible with various scenarios, including nearshore seawater and inland freshwater, enhancing its applicability and overcoming the shortcomings of traditional equipment with fixed parameters and poor fish species compatibility. By collecting fish school density data using underwater sonar, the controller adjusts the acoustic and optical signals accordingly. For example, the controller automatically adjusts the acoustic and optical power based on the fish school density. At low densities, the power is increased to expand the attraction range, while at high densities, the power is reduced to prevent fish from escaping due to strong light and sound stress. This forms a real-time feedback loop for fish guidance, improving the attraction stability of the device and helping to keep the fish school stable in the mid-water layer.

[0032] In one example, the fish-guiding device consists of two main parts: an annular floating body above water and an equilateral triangular pyramidal submersible underwater. These two parts are connected by a waterproof chain, and the entire device is deployed to nearshore artificial reef areas. Optionally, during production, the underwater triangular pyramidal submersible is filled with high-density concrete ballast material at the bottom to form a weight. After being launched, the heavy weight at the bottom causes the entire pyramid to sink, ensuring it stands firmly on the seabed and is not overturned or tilted by currents, eliminating the need for additional external ballast stones. The annular floating body is constructed as a hollow ring with a roughened outer wall, serving entirely as a surface for biofilm adhesion. Submerged in seawater, it allows planktonic algae and small shellfish to attach, cultivating natural surface food. Two sets of solar power generation units are symmetrically installed at the top of the float to absorb solar energy and generate electricity on sunny days. A wave energy generation unit is vertically suspended in the hollow central area of ​​the ring. Inside the unit is a small pendulum; when the waves cause the float to sway, the pendulum remains stationary due to gravity, creating a relative oscillation that drives an internal hydraulic pump to generate wave energy. The sealed compartment inside the annular float houses a controller and an energy storage battery compartment. The controller is electrically connected to both the solar and wave energy generation units, allowing it to autonomously switch between primary and secondary power supply and control excess power to charge the energy storage battery. The underwater submersible is an equilateral triangular pyramid with sides of 1.2 meters. All three lateral prisms and three triangular lateral faces of the pyramid are roughened to serve as a uniform attachment surface for organisms. Once placed on the seabed, it can foster the growth of benthic insects and algae, forming a natural foraging area around the pyramid. Light-guiding units composed of multiple sets of blue-green LEDs are installed at intervals along the three side prisms. An underwater speaker is fixed below the midpoint of one of the triangular side prisms as a sound-guiding unit. The lights and sound-emitting devices work together to emit light and sound signals to attract bottom-dwelling fish to the triangular pyramid and also guide the fish to swim towards the middle layer of the water along the pyramid. Optionally, a high-frequency underwater sonar is installed on one of the side prisms of the triangular pyramid, offset from the position of the lights, and a small underwater camera is also installed on the pyramid. The camera faces the waters surrounding the pyramid, automatically taking pictures to identify the main fish species in the sea, while the sonar scans in real time to detect the degree of fish aggregation in the surrounding area.

[0033] When the entire fish-guiding system is in operation, the controller receives information about the fish species identified by the camera and the fish density collected by the underwater sonar. It automatically and dynamically adjusts the output power of the LED lights and underwater speakers. If there are too few fish, it increases the brightness and volume to expand the attraction range. If there are too many fish, it reduces the power of sound and light to prevent the fish from being startled and escaping, accurately confining the fish in the mid-water layer and preventing them from all rising to the surface and scattering. At the same time, the controller automatically switches between solar and wave power supply modes according to the sea surface lighting and wave size. On cloudy days, it relies on wave power for continuous power supply. In extreme weather conditions with continuous calm and no waves, it automatically shuts down secondary equipment such as the underwater camera and underwater sonar, retaining only the basic functions of the sound and light guidance units. It can operate unattended in the sea for extended periods without manual maintenance.

[0034] Based on the aforementioned fish-guiding device, this application proposes a fish-guiding method, including as follows: Figure 3 The following execution steps are shown: Step 301: Determine the preset deployment points in the waters to be guided by fish, and set up fish guiding devices at the preset deployment points; Step 302: Determine the current power generation condition based on the current environmental information, and adjust the charging and discharging of the fish guiding device according to the current power generation condition; Step 303: Control the light-induction unit of the fish-guiding device to emit a first light signal based on the current environmental information, and control the sound-induction unit of the fish-guiding device to emit a first sound signal based on the first light signal; Step 304: Use the underwater sonar of the fish guide device to collect the fish aggregation density; Step 305: When the fish density is less than a preset density threshold, increase the output power of the first light signal and the first sound signal; Step 306: When the fish density is greater than the preset density threshold, reduce the output power of the first acoustic signal and the first optical signal, and increase the output power attenuation gradient of multiple LEDs in the light induction unit along the side prism.

[0035] When using the aforementioned fish-guiding device, the pre-defined locations of the device within the target waters are first determined, and the device is then installed at each location. Optionally, the pre-defined locations are distributed in a matrix within the target area, with a pre-defined distance between each location. In one example, a three-dimensional fish-guiding operation is conducted in an offshore artificial reef area using the fish-guiding device. The average water depth of the operation area is 20m, and the target fishing layer is set at the mid-water layer of 8-15m. During fish guidance, a water area survey is first completed, and the locations are planned in a matrix format, with a 100m spacing between each location. This spacing avoids interference between the acoustic and / or optical signals of multiple fish-guiding devices and creates a continuous three-dimensional fish-attracting area, improving fish-guiding efficiency. Afterwards, the fish guide devices were deployed sequentially at each deployment point using the work vessel. The underwater triangular pyramid was stabilized and stood upright on the seabed of the reef area by the concrete counterweight poured at the bottom, while the annular float above it floated on the sea surface. The annular float and the triangular pyramid were flexibly connected by chains to complete the deployment.

[0036] After the fish guide device is deployed, the current environmental signals are acquired, and the current power generation status is determined based on the current environmental information, so as to regulate the charging and discharging of the fish guide device during the fish guiding process. Specifically, the current environmental information acquired at this stage includes the current light intensity and the current wave information, which may include wave height, wave period, etc.

[0037] As one possible implementation, the charging and discharging regulation of the fish guiding device can be divided into the following three cases: 1) When the current light intensity exceeds a preset threshold, the solar power generation unit is used as the main power source, and the wave energy generation unit is used as the auxiliary power source. The fish guide device utilizes the solar power generation unit to discharge, thus powering the acoustic and optical guidance units, etc. The surplus discharge from the solar power generation unit and the electrical energy from the wave energy generation unit are stored in the energy storage battery to charge the fish guide device. In one example, during the day, when there is sufficient sunlight and the light intensity exceeds 8000 lx, the solar power generation unit is determined to be the main power source. The solar power generation unit is prioritized to power the acoustic and optical guidance units, underwater cameras, underwater sonar, etc. The surplus electrical energy is stored in the energy storage battery, making full use of the clean energy reserves during the day to provide power support for nighttime operations.

[0038] 2) When the current light intensity is less than the preset intensity threshold and the current wave information indicates the presence of waves, the wave energy generation unit is selected as the power source. The fish guide device is controlled to discharge using the wave energy generation unit, and the surplus discharge is used to charge the energy storage battery. In one example, on cloudy days or at night, when the light intensity is less than 8000 lx and there are effective waves on the sea surface, the wave energy generation unit is switched to the power source mode. The hydraulic system generates electricity by relying on the pendulum suspended in the hollow position of the float, which compensates for the shortcoming that pure solar equipment cannot work at night. Then, the surplus electricity of the wave energy generation unit is stored in the energy storage battery.

[0039] Optionally, when using a wave energy power generation unit as the power source, the pendulum oscillates back and forth with the waves. A hydraulic pump converts the mechanical energy of the waves into hydraulic energy, which is then converted into electrical energy by a hydraulic generator. During this process, the controller of the fish guide device can adjust the hydraulic damping according to a positive correlation with the real-time wave height. Larger waves and higher wave heights require correspondingly higher hydraulic damping to limit the oscillation amplitude of the pendulum and prevent damage to the pendulum and other structures caused by large waves. Smaller waves reduce hydraulic damping to improve energy capture efficiency under weak waves, thus balancing the device's operational safety and power generation benefits.

[0040] 3) If the current light intensity is less than the preset intensity threshold and the current wave information is no waves, then the current power generation condition is no power source, meaning neither the solar power generation unit nor the wave power generation unit can provide power to the fish guide device. In this case, the controller lowers the discharge lower limit threshold of the fish guide device, and simultaneously lowers and retains only the basic load of the acoustic and optical induction units to increase the offshore self-sufficiency time of the fish guide device. In one example, if there is continuous rain and the sea surface is calm for an extended period, the fish guide device has no effective power source. The controller automatically lowers the discharge lower limit of the energy storage battery and cuts off unnecessary peripherals, retaining only the basic workload of the optical and acoustic induction units. This ensures that the energy storage battery discharges as much as possible while preventing over-discharge failure, maximizing the unmanned self-sufficiency time of the fish guide device and reducing offshore emergency recovery and maintenance costs.

[0041] Regardless of the environmental conditions that place the fish-guiding device in, once the charging and discharging strategy is adjusted and the charging and discharging method is determined, the fish-guiding process can officially begin. During the fish-guiding process, firstly, underwater cameras collect information about the current fish species. Then, a preset database is used to query the corresponding light band and flashing period for the current fish species. The light-induction unit of the fish-guiding device is then controlled to emit a first light signal according to the light band and flashing period. The output power of the first light signal is then adjusted based on the current light intensity to match it. Optionally, the light-induction unit uses blue-green LED lights. The underwater working illuminance of the blue-green composite light source is 0.3~0.8 lx. Multiple LED lights are evenly spaced on the side prisms of a triangular pyramid. After emitting the first light signal, the output power of the multiple LED lights is controlled to gradually decrease from bottom to top, thereby creating a gradual light field within the fish-guiding area. The lower part of the cone has high light power and ample illumination, attracting bottom-dwelling fish to gather towards the cone. The light power gradually decreases upwards, resulting in softer illumination in the upper water layer, creating a natural upward-pulling light gradient. This prevents the fish from surfacing and scattering due to the strong light from the upper layer, stabilizing the fish in the mid-water fishing zone and achieving three-dimensional stratified fish guidance. Optionally, the control process for the first light signal emitted by the light induction unit can be as follows: first, a light signal is emitted according to the light wavelength and flashing period corresponding to the fish species information; then, the output power of the emitted light signal is adjusted according to the current light intensity. In the case of multiple LEDs, the output power of all LEDs is adjusted at this time, for example, by simultaneously reducing the output power of all LEDs by 10%. Subsequently, the output power of multiple LEDs is adjusted in a gradient decrease from bottom to top, forming a gradual light field. For example, the output power of LEDs located at the bottom remains unchanged, while the output power of LEDs located further up decreases more significantly. Currently, the control process for the first light signal can also involve controlling the output power of the LEDs to gradually decrease from bottom to top when the underwater sonar detects a high density of fish, thus creating a gradual light field. This induces the fish to move upwards and keeps them in the middle water layer. Alternatively, multiple LEDs can be controlled to emit light directly at the output power that creates the gradual light field when the light-inducing unit emits the first light signal, instead of adjusting in stages or steps. Therefore, the control process for emitting the first light signal in this embodiment is not limited, as long as a gradual light field can be formed.

[0042] Furthermore, after the light-inducing unit emits the first light signal, the sound-inducing unit of the fish-guiding device is controlled to emit the first sound signal based on the first light signal. Specifically, when emitting the first sound signal, the current fish-guiding scenario is first determined as a fishing scenario, a routine maintenance scenario, or a juvenile fish protection scenario. Then, based on the determined fish-guiding scenario, a corresponding sound wave is selected from a preset sound wave library, including the sound wave type, sound wave frequency, and sound wave pulse width. For example, the fishing scenario outputs a 300-500Hz feeding pulse sound wave to efficiently gather adult fish for ecological harvesting; the routine maintenance scenario outputs a low-frequency soothing sound wave to maintain the stable habitat of fish in the reef area and restore fishery resources; and the juvenile fish protection scenario outputs a mild repulsion sound wave to drive away predatory large fish and protect fish fry and fingerlings in the reef area. Then, the emission sequence of the first sound signal is determined based on the light flicker period of the first light signal, so that the first light signal and the first sound signal have a time misalignment or time overlap. When the timing of the first light signal and the first sound signal is out of sync, the first light signal and the first sound signal are emitted alternately; when the timing of the first light signal and the first sound signal overlaps, the first light signal and the first sound signal are emitted simultaneously and stop simultaneously. This causes the stimulation signal to the fish in the water to change continuously and dynamically, preventing the fish from developing tolerance or escaping due to long-term exposure to fixed sound and light or a single sound and light, thus improving the efficiency of attracting or guiding fish.

[0043] In one example, after deploying the fish-guiding device and determining its charging and discharging strategy, an underwater camera continuously identifies the dominant fish species in the water. Assuming the main target fish species in this sea area is black sea bream, the controller selects a composite light source of 480nm blue light combined with 520nm green light, with a flashing cycle of 3 seconds. Simultaneously, the basic power of the lights is adjusted based on the intensity of natural sea surface light: during the day, when the sea surface light is strong, the light power is appropriately reduced to save energy and prevent excessive underwater brightness from causing fish to escape due to negative phototaxis; at dawn and dusk, or when the water turbidity is high, the light power is automatically increased to ensure the intensity of the attracting light field. All LEDs on the side prisms of the triangular pyramid are set to have a power gradient decay from bottom to top, with the highest light source power at the bottom of the pyramid, gradually decreasing towards the top, naturally forming a vertical light field that is stronger at the bottom and weaker at the top. This initially guides the fish school to move upwards along the pyramid while preventing the fish school from directly surfacing and dispersing at the surface. Then, by matching the light flashing cycle with the sound wave timing, a 380Hz low-frequency pulsed sound wave corresponding to the fishing scenario was selected. The optimal setting was to stagger the sound emission timing with the light formation timing: the sound emission paused when the light was on, and the sound wave emission started when the light was off. Compared to a single continuous stimulus of sound and light, the alternating timing mode can delay the visual and auditory adaptation of fish, effectively avoid the rapid decay of the fish gathering effect after a long period of attracting fish, and significantly prolong the time that fish stay around the device.

[0044] After the fish-guiding device emits the first light and sound signals, underwater sonar is used to collect the fish density. When the fish density is low, the output power of the first sound and light signals is increased, and the brightness of the lights and the sound pressure of the sound waves are increased simultaneously to expand the radiation radius of the sound and light, attracting the dispersed fish from the periphery to quickly gather towards the triangular pyramid, thus improving the fish gathering efficiency. When the fish density is high, the sound and light power is reduced to avoid the fish scattering due to stress caused by strong light and sound. At the same time, the power attenuation gradient of the LED lights from bottom to top is increased to further compress the light intensity of the upper water layer and strengthen the vertical light field constraint, thereby preventing the fish from scattering after rising to the surface water. This helps to continuously stabilize the fish in the middle water layer at 8-15m, which can improve the efficiency of fish guidance and fishing, as well as the utilization rate of the middle water layer. In one example, the high-frequency underwater sonar on the fish-guiding device continuously scans the water area within a 30m radius of the triangular pyramid, constantly collecting data on the distribution and density of fish in the water. The system sets a density threshold of 0.8 for the fish reflectance intensity per unit area, which serves as the standard for judging the density. The underwater sonar uses an ultra-high frequency detection band, outside the range of fish's auditory sensitivity, ensuring that it does not disturb or disperse the fish during the entire data collection process. When the fish density reported by the underwater sonar is below 0.8, it indicates that there are few fish around the triangular pyramid. The controller simultaneously increases the overall output power of the LED and raises the sound pressure level of the acoustic induction unit, expanding the effective radiation radius of the sound and light. This attracts more dispersed bottom-dwelling fish from a wider area to the location of the triangular pyramid, shortening the time required for fish enrichment and increasing the frequency of fishing operations. When the underwater sonar detects a fish density exceeding 0.8, it indicates that a large number of fish have gathered. At this point, the controller lowers the overall output power of the sound and light to prevent the fish from escaping due to stress from continuous stimulation by strong light and sound waves. Simultaneously, it increases the power attenuation gradient of the LEDs from bottom to top, further weakening the light intensity at the top of the cone and enhancing the constraint effect of the vertical light field. This gradient light field restricts the fish from swimming upwards, stabilizing them in the mid-water layer at a depth of 8-15 meters, preventing them from rising to the surface and scattering. If fishing is necessary at this time, only mid-water nets are used. These nets never contact the bottom artificial reef, avoiding the problems of traditional bottom trawls that scratch and damage the reef and destroy attached food organisms. This also allows for selective fishing, reducing the bycatch of juvenile fish and balancing production needs with marine ecological conservation.

[0045] It should be noted that the fish guiding device and method in this application are applicable not only to fishing operations but also to the daily care of fish fry and fingerlings in aquaculture waters. In one example, multiple fish guiding devices are evenly deployed in the fry rearing waters according to the aforementioned deployment method, with a spacing of 60m between devices. This spacing is smaller than that used in fishing operations, creating a fully covered, three-dimensional maintenance area without blind spots. The underwater triangular pyramid is stably upright on the seabed by concrete counterweights poured into its bottom. The overall structure is stable, without sharp edges, and will not scratch young fish fry. At the same time, all sides of the triangular pyramid, the rough biological attachment surfaces of the prisms, and the surface attachment surface of the upper annular float can continuously breed algae, plankton, and small benthic food organisms, forming a natural and stable micro-food field around the device. This provides a sufficient natural food source for newly hatched fish fry and fingerlings, eliminating the need for frequent artificial feeding, significantly reducing the cost of fry rearing. Furthermore, the natural food is more in line with the growth habits of fish, effectively improving the health and survival rate of the fish fry. The power generation control logic during the maintenance phase adapts to the fishing operation conditions, ensuring stable 24-hour operation of the device. During the day, when sunlight intensity exceeds 8000 lx, solar power is the primary source of electricity, with surplus power stored in batteries. At night or on cloudy days when sunlight is below 8000 lx, the system automatically switches to wave energy generation mode corresponding to the hollow suspended pendulum plate within the floating structure. Waves drive the pendulum plate to oscillate and continuously generate electricity, achieving all-weather self-sufficient power supply. This completely solves the problems of difficult wiring and cumbersome maintenance in nearshore fry rearing areas, ensuring uninterrupted maintenance operations. In extreme calm weather conditions, the system retains only the core maintenance functions of acoustic and light guidance and sonar monitoring, maximizing equipment endurance and continuously providing a stable habitat for fish fry. Simultaneously, the fish guiding device employs a low-stimulation acoustic and light control strategy adapted to the habits of juvenile fish, distinct from the high-intensity fish guiding logic used in fishing operations. The controller outputs a gentle primary light signal based on the ambient light and water turbidity. It still employs a gradient attenuation light field with stronger light at the bottom and weaker light at the top, but the overall light output power is significantly reduced to avoid stress on the fish fry caused by strong light. Simultaneously, a low-frequency, low-decibel primary sound signal is matched, with sound and light alternating sequentially to simulate the sound and light environment of a natural aquatic environment, thus training the fish fry to cluster in the safe mid-level waters surrounding the device. The onboard underwater sonar continuously collects data on the density of surrounding fish populations, accurately monitoring the number and distribution of fish fry. When the monitored fish fry density is low, it indicates that the fish fry are scattered and have escaped, and their habitat stability is poor. At this time, the controller can slightly increase the sound and light output power to gently guide the scattered fish fry to gather around the fish guide device, forming a stable juvenile fish cluster area. This avoids the problem of fish fry being scattered over a large area, which leads to difficulties in foraging and easy predation by natural enemies. When the fish fry density is too high, the sound and light output power should be reduced in time, and the light gradient attenuation effect should be amplified to guide some fish fry to disperse to the surrounding waters. This prevents the high density of fish fry from causing hypoxia and cross-infection of diseases, and ensures the uniform growth of fish fry.

[0046] Meanwhile, the fish-guiding device in this application can also effectively assist in the natural reproduction of fish and optimize the breeding environment for fry and fingerlings. A stable, three-dimensional sound and light habitat provides a safe and comfortable spawning environment for adult fish, inducing mature parent fish to gather in the waters surrounding the device for mating and spawning. The abundant natural food around the fish-guiding device provides continuous nutritional support for egg hatching and fry growth. Furthermore, the fish-guiding device operates without human intervention or mechanical disturbance, ensuring no disturbance to parent fish spawning or damage to the egg hatching environment. Compared to traditional open-air fry rearing waters, it significantly improves egg hatching rate, fry survival rate, and overall fry and fingerling reproduction efficiency.

[0047] This embodiment expands the application of the fish guiding device from a single fishing operation to multiple scenarios such as fish fry habitat maintenance, fish fry and fingerling breeding or propagation through adaptive control of the fish guiding device and the fish guiding method. It also effectively improves the ecological environment of aquaculture waters by deploying the fish guiding device, continuously expands the reserves of fishery resources, and adapts to the diverse aquaculture needs of modern marine ranches.

[0048] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0049] The equipment and method provided in this application are one-to-one correspondences. Therefore, the equipment also has similar beneficial technical effects as its corresponding method. Since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the equipment will not be repeated here.

[0050] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code.

[0051] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fish-guiding device, characterized in that, The fish guiding device includes a buoy device and a sinker device; The sinking device is an equilateral triangular pyramid. The side prisms and triangular sides of the equilateral triangular pyramid are set as biological attachment surfaces to form a natural food field. A light-inducing unit is installed on the side prisms and an acoustic-inducing unit is installed on the triangular sides to emit light and sound signals to induce fish to gather towards the triangular pyramid and move upward along the triangular pyramid. The floating device is an annular float. The outer surface of the annular float is set as a biological attachment surface for cultivating surface plankton to assist in fish guidance. A solar power generation unit is installed at the top of the annular float and a wave power generation unit is installed in the middle to provide power to the acoustic and optical induction units on the triangular cone. The fish-guiding device also includes a controller for dynamically adjusting the output power of the acoustic signal and the optical signal, and for dynamically adjusting the electrical energy provided by the solar power generation unit and / or the wave power generation unit to the acoustic induction unit and the optical induction unit.

2. The fish-guiding device according to claim 1, characterized in that, The acoustic induction unit is installed below the midpoint of the triangular side surface.

3. The fish-guiding device according to claim 1, characterized in that, The submerged device is also equipped with an underwater camera and an underwater sonar; the underwater camera is used to identify the fish species in the waters where the fish guide device is deployed, and the underwater sonar is used to collect the fish aggregation density within a preset range of the submerged device. The controller is used to dynamically adjust the acoustic signal and the optical signal according to the fish species and / or the fish population density.

4. A fish-guiding method, employing a fish-guiding device as described in any one of claims 1 to 3, characterized in that, The method includes: Determine the preset deployment points in the waters to be guided for fish, and set up the fish guiding device at the preset deployment points; wherein the preset deployment points are distributed in a matrix in the area to be guided for fish, and there is a preset distance between each preset deployment point; The current power generation condition is determined based on the current environmental information, and the charging and discharging of the fish guiding device is regulated according to the current power generation condition. The light-guiding unit of the fish-guiding device is controlled to emit a first light signal based on the current environmental information, and the sound-guiding unit of the fish-guiding device is controlled to emit a first sound signal based on the first light signal; wherein the first light signal and the first sound signal are time-displaced or time-overlapping. The underwater sonar of the fish guiding device is used to collect the fish school aggregation density. When the fish school aggregation density is greater than a preset density threshold, the first acoustic signal and the first optical signal are adjusted so that the aggregated fish school moves upward along the sinking device of the fish guiding device and is maintained in the middle layer of the water body in the area to be guided; wherein, the middle layer of the water body is the 8-15m range of the area to be guided.

5. The fish-guiding method according to claim 4, characterized in that, The current environmental information includes the current light intensity and current wave information; the current power generation condition is determined based on the current environmental information, and the fish guiding device is charged and discharged according to the current power generation condition, including: If the current light intensity is greater than the preset intensity threshold, then the current power generation condition is determined to be that the solar power generation unit is the main power source and the wave power generation unit is the auxiliary power source. The fish guide device is controlled to discharge using the solar power generation unit and to charge using the discharge surplus of the solar power generation unit and the wave power generation unit. If the current light intensity is less than a preset intensity threshold and the current wave information indicates the presence of waves, then the current power generation condition is determined to be that the wave energy power generation unit is the power source, and the fish guiding device is controlled to discharge using the wave energy power generation unit and use the discharge surplus to recharge. If the current light intensity is less than a preset intensity threshold and the current wave information is no waves, then the current power generation condition is determined to be no power generation, and the fish guide device is controlled to lower its discharge lower limit threshold, while the basic load of the acoustic induction unit and the light induction unit is lowered and only retained.

6. The fish-guiding method according to claim 5, characterized in that, When the wave energy generation unit is the power source, it oscillates back and forth with the waves, converting the mechanical energy of the waves into hydraulic energy via a hydraulic pump, and then converting the hydraulic energy into electrical energy via a hydraulic generator; the method further includes: The wave height in the current wave information is obtained, and the hydraulic damping of the wave energy generation unit is adjusted according to the wave height; wherein the wave height is positively correlated with the hydraulic damping.

7. The fish-guiding method according to claim 4, characterized in that, The current environmental information includes the current light intensity and the current fish species information identified by the underwater camera of the fish guide device; Based on the current environmental information, the light-inducing unit of the fish-guiding device is controlled to emit a first light signal, including: The light band and flashing period are determined based on the fish species information; The light-inducing unit of the fish-guiding device emits the first light signal according to the light band and the light flashing period; The output power of the first optical signal is adjusted according to the current light intensity; wherein the current light intensity is negatively correlated with the output power of the first optical signal.

8. The fish-guiding method according to claim 7, characterized in that, The light-inducing unit includes multiple LEDs spaced apart along the side prisms, wherein the multiple LEDs are blue-green composite light sources, and the underwater working illuminance of the blue-green composite light source is 0.3~0.8 lx; the light-inducing unit controlling the fish-guiding device to emit a first light signal also includes: The output power of the multiple LED lights is controlled to decrease gradually from bottom to top along the side prism to form a gradual light field in the water area where the fish are to be guided.

9. A fish-guiding method according to claim 7, characterized in that, Based on the first optical signal, the acoustic induction unit of the fish-guiding device is controlled to emit a first acoustic signal, including: The system acquires the current fish-guiding scenario remotely input by the user and selects the corresponding sound wave from a preset sound wave library based on the current fish-guiding scenario; wherein the current fish-guiding scenario includes at least a fishing scenario, a daily maintenance scenario, and a juvenile fish protection scenario, and the corresponding sound wave includes at least a sound wave type, a sound wave frequency, and a sound wave pulse width; The emission timing of the corresponding sound wave is determined based on the optical flicker period of the first optical signal, so that the emission timing is misaligned or overlapped with the optical flicker period timing. The acoustic induction unit of the fish-guiding device emits the first acoustic signal according to the corresponding sound wave and the sound emission sequence.

10. A fish-guiding method according to claim 8, characterized in that, After collecting fish aggregation density data using the underwater sonar of the fish-guiding device, the method further includes: When the fish density is less than a preset density threshold, the output power of the first optical signal and the first acoustic signal is increased. When the fish population density is greater than a preset density threshold, the output power of the first light signal and the first sound signal is reduced, and the output power attenuation gradient of the multiple LED lights along the side prism is increased.

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