System and method for catching and killing jellyfishes around water inlet of marine power plant

Abstract

The invention provides a system and a method for catching and killing jellyfishes around a water inlet of a marine power plant, and relates to the technical field of harmless treatment of marine organisms. The detection subsystem comprises a visual analysis module and a detection device, the visual analysis module is in signal connection with the central processing unit and the detection device, and the visual analysis module is used for conducting and calculating video data collected by the detection device. According to the system and the method, the detection subsystem is used for monitoring jellyfishes which are about to enter an area at any time, when the jellyfishes are too many, the jellyfishes can be progressively expelled in an optical mode and an acoustic mode through the expelling subsystem, and when large-scale jellyfish damage occurs, the capturing subsystem is used for rapidly capturing and automatically performing next round of standby application, so that the jellyfishes are prevented from being damaged. And workers can conveniently carry out unified harmless treatment on large-scale outbreak jellyfishes.

Description

Technical Field

[0001] The invention relates to the technical field of harmless treatment of marine organisms, in particular to a system and method for killing jellyfish around a water inlet of an ocean power plant. Background Art

[0002] Due to human activities and atmospheric changes in recent years, jellyfish disasters have occurred in my country's coastal waters to varying degrees, with a trend of worsening year by year, causing serious damage to the development of offshore marine fisheries, coastal industries and marine ecological security. Sand jellyfish, moon jellyfish and white jellyfish have reproduced in large numbers in my country's coastal waters. In marine power plants, the water inlet usually needs to draw a large amount of water from seawater to cool the generator or other key components. The frequent appearance of jellyfish groups has become an increasingly serious problem. Jellyfish groups may block the water inlet, resulting in a reduction in cooling water flow, which in turn affects the normal operation of the power plant. In addition, the soft structure of jellyfish can easily entangle pipes and other equipment, increasing maintenance costs and possibly causing equipment damage.

[0003] Traditional solutions often rely on manual killing or physical barriers, which require frequent manual maintenance, have low automation and are inefficient, and are difficult to respond effectively to large-scale jellyfish outbreaks. Therefore, the development of an automated and efficient jellyfish killing system has become an urgent need. Summary of the invention

[0004] The present invention aims to solve the shortcomings of the background technology, provide a jellyfish killing system and method around the water inlet of an ocean power plant, and improve the defects of the traditional jellyfish killing method at the water inlet of an ocean power plant, which is low in efficiency and difficult to cope with large-scale jellyfish outbreaks.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a jellyfish killing system around the water inlet of an ocean power plant, comprising: a main console, a central processing unit is arranged inside the main console; a detection subsystem, the detection subsystem comprises a visual analysis module and a detection device, the visual analysis module is respectively connected with signals between the central processing unit and the detection device, and the visual analysis module is used to transmit and calculate the video data collected by the detection device; an expulsion subsystem, the expulsion subsystem comprises an optical expulsion module and an acoustic expulsion module, and the expulsion subsystem performs two different expulsion effects through the optical expulsion module and the acoustic expulsion module; a capture subsystem, the capture subsystem is used to cooperate with the detection subsystem to capture jellyfish when they are too rampant so as to kill them uniformly.

[0006] Furthermore, the detection device includes two detection plates arranged in pairs, a plurality of cameras are provided on one side of the detection plate, the plurality of cameras are arranged at equal distances, and the cameras between the two detection plates are arranged opposite to each other.

[0007] Furthermore, the detection device also includes a fill light, which is arranged on one side of the detection board, and the fill lights between the two detection boards are arranged opposite to each other.

[0008] Furthermore, the expulsion subsystem includes: an optical expulsion module, which is composed of an expulsion plate, a heat dissipation groove and a strong light. The strong light is arranged on the surface of the expulsion plate, and the heat dissipation groove is opened around the expulsion plate to assist the expulsion plate in heat dissipation.

[0009] Furthermore, the expulsion subsystem also includes an acoustic expulsion module, which is composed of a plurality of infrasound generators and a plurality of guide sleeves. The infrasound generator is arranged on one side of the expulsion plate, and the guide sleeve is sleeved on the outer surface of the infrasound generator. The guide sleeve is a trapezoidal structure with a hollow middle portion.

[0010] Furthermore, the capture subsystem includes a capture device and a wireless module, the capture device includes: a capture frame, the capture frame is arranged in a rectangular structure as a whole, and brackets are provided on both sides of the capture frame, and the brackets are used to connect with the side walls at the water inlet of the ocean power plant; multiple sleeve rods are arranged on one side of the capture frame, and sliders are provided on the top side and the bottom side of the sleeve rod, and a slide rail is opened on the outer surface of the capture frame, and the slider is slidably connected to the slide rail; an electric roller is arranged on the side of the slider facing the slide rail, and a wireless module is provided inside the sleeve rod for connecting with the central processing unit and controlling the opening and closing of the electric roller; a capture net is arranged between two of the sleeve rods.

[0011] Furthermore, both ends of the capture net are provided with plug-in strips, the surface of the sleeve rod is provided with plug-in grooves, and the plug-in strips and the plug-in grooves are plugged into each other.

[0012] A method for killing jellyfish around the water inlet of an ocean power plant, characterized by comprising the following steps:

[0013] Step S1: Set the capture subsystem at the location of the seawater inlet, set the expulsion subsystem in a direction away from the seawater inlet, and set the detection subsystem on both sides of the seawater inlet. Start the whole system through the main console, and use the central processing unit to set the visual analysis module, set the number of jellyfish that will affect the seawater inlet to "more", and set the number of jellyfish that will seriously affect the inlet to "excessive";

[0014] Step S2: intercepting the jellyfish that are about to enter the water inlet with turbulent water flow by the capture net in the capture subsystem to prevent the jellyfish from wandering into the water inlet;

[0015] Step S3: using the detection plates on both sides of the detection subsystem to detect the jellyfish located between the two detection plates;

[0016] Step S4: when it is detected that there are “many” jellyfish, the jellyfish are expelled through the expulsion subsystem;

[0017] Step S5: When an "excessive amount" of jellyfish is detected, which may cause blockage and threat to the seawater inlet, the jellyfish are uniformly captured by the capture subsystem for harmless treatment.

[0018] Wherein, the step S4 also includes:

[0019] Step S41: When the detection subsystem is detecting a large number of jellyfish, the optical expulsion module will emit light to stimulate the jellyfish to leave;

[0020] Step S42: When the optical expulsion module is activated and the jellyfish still remain within the "more" threshold, the infrasound generator in the acoustic expulsion module is activated to generate infrasound, and the sensitivity of the jellyfish to infrasound is used to stimulate them to leave.

[0021] Wherein, the step S5 also includes:

[0022] Step S51: The capture net at the water inlet will intercept the jellyfish and prevent it from approaching the turbulent area of ​​the water inlet;

[0023] Step S52: When the detection subsystem detects that the number of jellyfish is "excessive" during the detection process, a signal will be sent to the wireless module through the visual analysis module;

[0024] Step S53: The wireless module that receives the signal will start the electric roller to move the two unfolded sleeve rods closer to each other to close the capture net, capture the jellyfish in the capture net and pile them on one side for harmless treatment;

[0025] Step S54: At the same time, the two sleeve rods located on one side of the two originally deployed sleeve rods will be deployed in sequence under the drive of the electric roller, and the capture net between the two new sleeve rods will be deployed to perform a second round of interception protection and capture.

[0026] The present invention provides a system and method for killing jellyfish around the water inlet of an ocean power plant, which has the following features:

[0027] Beneficial effects:

[0028] The advantages of the present invention are that the detection subsystem is used to monitor the jellyfish that are about to enter the area at all times. When there are many jellyfish, the expulsion subsystem can be used to progressively expel them in two ways, optically and acoustically. When a large-scale jellyfish hazard occurs, the capture subsystem is used to quickly capture and automatically prepare for the next round of standby, which is convenient for staff to uniformly and harmlessly treat large-scale jellyfish outbreaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the detection device of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the expulsion subsystem of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the capture device of the present invention.

[0033] Figure 5 It is a schematic diagram of the sleeve rod structure of the present invention.

[0034] Figure 6 It is a schematic diagram of the subsystem structure of the present invention.

[0035] Figure 1-6 In: 1-main console; 110-central processing unit; 2-detection subsystem; 210-visual analysis module; 220-detection device; 221-detection board; 222-camera; 223-fill light; 3-expulsion subsystem; 310-optical expulsion module; 311-expulsion board; 312-heat sink; 313-high light; 320-acoustic expulsion module; 321-infrasonic generator; 322-guide sleeve; 4-capture subsystem; 410-capture device; 411-capture frame; 411a-bracket; 411b-slide rail; 412-rod; 412a-slider; 412b-electric roller; 412c-bluetooth module; 412d-socket; 413-capture net; 413a-socket strip. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0037] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific processes and examples of materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0038] The embodiment of the present application provides a system and method for killing jellyfish around the water inlet of an ocean power plant. The system and method for killing jellyfish around the water inlet of an ocean power plant can use the detection subsystem to monitor the jellyfish that are about to enter the area at all times. When there are many jellyfish, the expulsion subsystem can use optical and acoustic methods to progressively expel them. When a large-scale jellyfish hazard occurs, the capture subsystem is used to quickly capture and automatically prepare for the next round of standby, which is convenient for the staff to uniformly and harmlessly treat the large-scale outbreak of jellyfish. The system and method for killing jellyfish around the water inlet of an ocean power plant are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0039] The present application is described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1-6 In the embodiment, a jellyfish killing system around the water inlet of an ocean power plant is provided, comprising: a main console 1, wherein a central processing unit 110 is provided inside the main console 1; a detection subsystem 2, wherein the detection subsystem 2 comprises a visual analysis module 210 and a detection device 220, wherein the visual analysis module 210 is respectively connected to signals between the central processing unit 110 and the detection device 220, and the visual analysis module 210 is used for transmitting and calculating video data collected by the detection device 220; an expulsion subsystem 3, wherein the expulsion subsystem 3 comprises an optical expulsion module 310 and an acoustic expulsion module 320, and the expulsion subsystem 3 performs two different expulsion effects through the optical expulsion module 310 and the acoustic expulsion module 320; and a capture subsystem 4, wherein the capture subsystem 4 is used for cooperating with the detection subsystem 2 to capture jellyfish when they are too rampant so as to kill them uniformly.

[0040] During use, the central processor 101 receives data from the detection subsystem 2 and decides whether to initiate the expulsion or capture operation according to the number of jellyfish.

[0041] Furthermore, the detection device 220 includes two detection plates 221 arranged in pairs, and a plurality of cameras 222 are provided on one side of the detection plate 221. The plurality of cameras 222 are arranged at equal intervals, and the cameras 222 between the two detection plates 221 are arranged relatively to each other. During use, the cameras 222 are used to capture video data and transmit it to the visual analysis module 210 for analysis. By using the two relatively arranged detection plates 221, the jellyfish group can be judged and detected from two different directions. By using the visual analysis module 210 to compare the data detected by the two detection plates 221, the accuracy of the detection can be effectively improved.

[0042] Furthermore, the detection device 220 also includes a fill light 223, which is arranged on one side of the detection plate 221, and the fill lights 223 between the two detection plates 221 are arranged relatively to each other. During use, the fill light 223 can illuminate the jellyfish group located between the two detection devices 220, so that the two detection devices 220 can detect the jellyfish group more clearly.

[0043] Furthermore, the expelling subsystem 3 includes: an optical expelling module 310, which is composed of an expelling plate 311, a heat dissipation slot 312 and a strong light 313, wherein the strong light 313 is arranged on the surface of the expelling plate 311, and the heat dissipation slot 312 is arranged around the expelling plate 311 to assist the expelling plate 311 in heat dissipation;

[0044] During use, when expulsion is required, the strong light generated by the strong light lamp 313 can be used to expel jellyfish away from the water inlet, thereby reducing the number of jellyfish. At the same time, the heat dissipation groove 312 can increase the contact area between the water flow and the expulsion plate 311, and the heat exchange and heat dissipation can be completed faster by using the heat dissipation groove 312.

[0045] Furthermore, the expelling subsystem 3 also includes an acoustic expelling module 320, which is composed of a plurality of infrasound wave generators 321 and a plurality of guide sleeves 322. The infrasound wave generator 321 is arranged on one side of the expelling plate 311, and the guide sleeve 322 is sleeved on the outer surface of the infrasound wave generator 321. The guide sleeve 322 is a trapezoidal structure with a hollow middle portion.

[0046] During use, the infrasound generator 321 in the acoustic expulsion module 320 can generate infrasound waves, and the jellyfish are dispersed by taking advantage of their sensitivity to infrasound waves. The guide sleeve 322 can guide and direct the sound waves emitted by the infrasound generator 321, so that the infrasound waves can be better conducted and dispersed.

[0047] Further, the capture subsystem 4 includes a capture device 410 and a wireless module 412c, wherein the capture device 410 includes: a capture frame 411, wherein the capture frame 411 is in a rectangular structure as a whole, and brackets 411a are provided on both sides of the capture frame 411, and the brackets 411a are used to connect with the side wall at the water inlet of the ocean power plant; a plurality of sleeve rods 412 provided on one side of the capture frame 411, and sliders 412a are provided on the top and bottom sides of the sleeve rods 412, and a slide rail 411b is provided on the outer surface of the capture frame 411, and the slider 412a is slidably connected with the slide rail 411b; an electric roller 412b is provided on the side of the slider 412a facing the slide rail 411b, and a wireless module 412c is provided inside the sleeve rod 412, which is used to connect with the central processor 110 and control the opening and closing of the electric roller 412b; a capture net 413 provided between the two sleeve rods 412;

[0048] During use, when "excessive" jellyfish are detected, the two sleeve rods 412 supporting the capture net 413 are driven to approach each other by the electric roller 412b, and the capture net 413 is driven by the two sleeve rods 412 to quickly intercept, store and capture the jellyfish inside the capture net 413, and the electric roller 412b is used to drive another set of sleeve rods 412 to open a new capture net 413.

[0049] Furthermore, both ends of the capture net 413 are provided with plug-in strips 4013a, and the surface of the sleeve rod 412 is provided with plug-in grooves 412d, and the plug-in strips 4013a and the plug-in grooves 412d are plugged into each other. By utilizing the plug-in effect, the capture net 413 can be quickly disassembled or loaded onto the sleeve rod 412 during use. This method can improve the convenience of the device in capturing and harmlessly treating jellyfish.

[0050] A method for killing jellyfish around the water inlet of an ocean power plant, characterized by comprising the following steps:

[0051] Step S1: The capture subsystem 4 is set at the position of the seawater inlet, and the expulsion subsystem 3 is set in a direction away from the seawater inlet, and the detection subsystem 2 is set on both sides of the seawater inlet. The whole system is started through the main console 1, and the visual analysis module 210 is set by the central processor 110, and the number of jellyfish that will affect the seawater inlet is set to "more", and the number of jellyfish that will seriously affect the inlet is set to "excessive";

[0052] Step S2: intercepting the jellyfish that are about to enter the water inlet with turbulent water flow by the capture net 413 in the capture subsystem 4 to prevent the jellyfish from wandering into the water inlet;

[0053] Step S3: using the detection plates 221 on both sides of the detection subsystem 2 to detect the jellyfish located between the two detection plates 221;

[0054] Step S4: when it is detected that there are “many” jellyfish, the jellyfish are expelled through the expelling subsystem 3;

[0055] Step S5: When an "excessive amount" of jellyfish is detected, which may cause blockage and threat to the seawater inlet, the jellyfish are uniformly captured by the capture subsystem 4 for harmless treatment.

[0056] Wherein, step S4 also includes:

[0057] Step S41: When the detection subsystem 2 is detecting a large number of jellyfish, the optical expelling module 310 will emit light to stimulate the jellyfish to leave;

[0058] Step S42: When the optical expulsion module 310 is activated and the jellyfish still remain within the "more" threshold, the infrasound generator 321 in the acoustic expulsion module 320 is activated to generate infrasound, and the sensitivity of the jellyfish to infrasound is used to stimulate them to leave.

[0059] Wherein, step S5 also includes:

[0060] Step S51: The capture net 413 at the water inlet will intercept the jellyfish and prevent it from approaching the turbulent area of ​​the water inlet;

[0061] Step S52: When the detection subsystem 2 detects that the number of jellyfish is "excessive" during the detection process, a signal will be sent to the wireless module 412c through the visual analysis module 210;

[0062] Step S53: The wireless module 412c that receives the signal will start the electric roller 412b to bring the two unfolded sleeve rods 412 closer to each other to close the capture net 413, capture the jellyfish in the capture net 413 and pile them on one side for harmless treatment;

[0063] Step S54: At the same time, the two sleeve rods 412 located on one side of the two originally deployed sleeve rods 412 will be deployed in sequence under the drive of the electric roller 412b, and the capture net 413 between the two new sleeve rods 412 will be deployed to perform a second round of interception protection and capture.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above is a detailed introduction to a jellyfish killing system and method around the water inlet of an ocean power plant provided in an embodiment of the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A jellyfish killing system around the water inlet of an ocean power plant, characterized in that: include: A main console (1), wherein a central processing unit (110) is provided inside the main console (1); A detection subsystem (2), the detection subsystem (2) comprising a visual analysis module (210) and a detection device (220), the visual analysis module (210) being respectively connected to the central processing unit (110) and the detection device (220) by signals, the visual analysis module (210) being used to conduct and calculate video data collected by the detection device (220); An expulsion subsystem (3), wherein the expulsion subsystem (3) comprises an optical expulsion module (310) and an acoustic expulsion module (320), and the expulsion subsystem (3) performs two different expulsion effects through the optical expulsion module (310) and the acoustic expulsion module (320); The capturing subsystem (4) is used to cooperate with the detecting subsystem (2) to capture jellyfish when they are too rampant so as to kill them uniformly.

2. The jellyfish killing system around the water inlet of an ocean power plant according to claim 1, characterized in that: The detection device (220) comprises two detection plates (221) arranged in pairs, a plurality of cameras (222) being arranged on one side of the detection plate (221), the plurality of cameras (222) being arranged at equal intervals, and the cameras (222) between the two detection plates (221) being arranged opposite to each other.

3. The jellyfish killing system around the water inlet of an ocean power plant according to claim 2, characterized in that: The detection device (220) further comprises a fill light (223), wherein the fill light (223) is arranged on one side of the detection plate (221), and the fill light (223) between the two detection plates (221) is arranged opposite to each other.

4. The jellyfish killing system around the water inlet of an ocean power plant according to claim 1, characterized in that: The expulsion subsystem (3) comprises: an optical expulsion module (310), the optical expulsion module (310) comprising an expulsion plate (311), a heat dissipation slot (312) and a strong light (313), the strong light (313) being arranged on the surface of the expulsion plate (311), and the heat dissipation slot (312) being arranged around the expulsion plate (311) to assist the expulsion plate (311) in dissipating heat.

5. The jellyfish killing system around the water inlet of an ocean power plant according to claim 4, characterized in that: The expulsion subsystem (3) further comprises an acoustic expulsion module (320), the acoustic expulsion module (320) being composed of a plurality of infrasound wave generators (321) and a plurality of guide sleeves (322), the infrasound wave generator (321) being arranged on one side of the expulsion plate (311), and the guide sleeve (322) being sleeved on the outer surface of the infrasound wave generator (321), and the guide sleeve (322) being a trapezoidal structure with a hollow middle portion.

6. The jellyfish killing system around the water inlet of an ocean power plant according to claim 1, characterized in that: The capture subsystem (4) comprises a capture device (410) and a wireless module (412c), wherein the capture device (410) comprises: A capture frame (411), the capture frame (411) is arranged in a rectangular structure as a whole, and brackets (411a) are provided on both sides of the capture frame (411), and the brackets (411a) are used to be connected to the side wall at the water inlet of the ocean power plant; A plurality of sleeve rods (412) are arranged on one side of the capture frame (411), a slider (412a) is arranged on the top side and the bottom side of the sleeve rod (412), a slide rail (411b) is provided on the outer surface of the capture frame (411), and the slider (412a) is slidably connected to the slide rail (411b); An electric roller (412b) is arranged on the side of the slider (412a) facing the slide rail (411b), and a wireless module (412c) is arranged inside the sleeve rod (412) for connecting with the central processor (110) and controlling the opening and closing of the electric roller (412b); A capture net (413) is arranged between the two sleeve rods (412).

7. The jellyfish killing system around the water inlet of an ocean power plant according to claim 6, characterized in that: Both ends of the capture net (413) are provided with plug-in strips (4013a), a plug-in groove (412d) is provided on the surface of the sleeve rod (412), and the plug-in strip (4013a) and the plug-in groove (412d) are plugged into each other.

8. The method for killing jellyfish around the water inlet of an ocean power plant according to any one of claims 1 to 7, characterized in that: The steps include: Step S1: The capturing subsystem (4) is set at the position of the seawater inlet, and the expelling subsystem (3) is set in a direction away from the seawater inlet, and the detecting subsystem (2) is set on both sides of the seawater inlet. The whole system is started through the main console (1), and the visual analysis module (210) is set using the central processing unit (110). The number of jellyfish that will affect the seawater inlet is set to "relatively large", and the number of jellyfish that will seriously affect the inlet is set to "excessive"; Step S2: intercepting the jellyfish that are about to enter the water inlet with turbulent water flow by the capture net (413) in the capture subsystem (4) to prevent the jellyfish from wandering into the water inlet; Step S3: using the detection plates (221) on both sides of the detection subsystem (2) to detect the jellyfish located between the two detection plates (221); Step S4: When a large number of jellyfish are detected, the jellyfish are expelled through the expulsion subsystem (3); Step S5: When an "excessive amount" of jellyfish is detected, which may cause blockage and threat to the seawater inlet, the capture subsystem (4) is used to capture them uniformly for harmless treatment.

9. The method for killing jellyfish around the water inlet of an ocean power plant according to claim 8, characterized in that: The step S4 also includes: Step S41: When the detection subsystem (2) is detecting a large number of jellyfish, the optical expelling module (310) will emit light to stimulate the jellyfish to leave; Step S42: When the optical expulsion module (310) is activated and the jellyfish still remain within the "more" threshold, the infrasound generator (321) in the acoustic expulsion module (320) is activated to generate infrasound waves, and the sensitivity of the jellyfish to infrasound waves is used to stimulate them to leave.

10. The method for killing jellyfish around the water inlet of an ocean power plant according to claim 8, characterized in that: The step S5 also includes: Step S51: The capture net (413) at the water inlet will intercept the jellyfish and prevent it from approaching the turbulent area of ​​the water inlet; Step S52: When the detection subsystem (2) detects that the number of jellyfish is "excessive" during the detection process, a signal will be sent to the wireless module (412c) through the visual analysis module (210); Step S53: The wireless module (412c) that receives the signal will start the electric roller (412b) to move the two unfolded sleeve rods (412) closer to each other to close the capture net (413), capture the jellyfish in the capture net (413) and pile them on one side for harmless treatment; Step S54: At the same time, the two sleeve rods (412) located on one side of the two originally deployed sleeve rods (412) will be deployed in sequence under the drive of the electric roller (412b), and the capture net (413) between the two new sleeve rods (412) will be deployed to perform a second round of interception protection and capture.

Images