Shipborne high-adaptability fishery catch multi-mode identification and intelligent sorting integrated device and operation method thereof

Abstract

The invention discloses a ship-borne high-adaptability fishery catch multi-mode identification and intelligent sorting integrated device and an operation method thereof. The device comprises a fishery catch feeding module, a fishery catch detection module, a fishery catch sorting module and a control module which are connected in sequence. The catch feeding module is provided with a cleaning tank and a conveying belt with a single baffle, and the baffle is horizontally arranged; the catch detection module is integrated with a multi-sensor fusion recognition system and is combined with a pulse airflow cleaning device and a uniform distributor shifting piece to realize catch posture adjustment and high-precision recognition; the catches sorting module adopts an anti-winding spiral flow guide groove and a disc type sorting device, and soft sorting is achieved through control of an air cylinder capable of turning over a tray. The high-salt-mist and high-vibration environment is resisted, the vibration attenuation rate is larger than or equal to 85% in cooperation with a two-stage damping system, the problems that traditional equipment is low in efficiency, high in misjudgment rate and poor in multi-variety adaptability are solved, the operation cost is remarkably reduced, and the intelligent level of ocean fishery is improved.

Description

Technical Field

[0002] This invention relates to the field of automated equipment technology for deep-sea fishing, specifically to an automated sorting device for catches suitable for ship navigation conditions, particularly for protection against high salt spray corrosion, suppression of continuous mechanical vibration, and flexible sorting of multiple types of catches in shipboard environments. Background Technology

[0004] In the operational system of distant-water fishing vessels, real-time sorting and processing of catches is a crucial link between fishing and processing. Its operational efficiency and accuracy directly affect the efficiency of subsequent refrigeration, processing, and transportation processes, and to a large extent, determine overall economic benefits and resource utilization. my country currently has over 2,500 distant-water fishing vessels, with an annual catch exceeding 2 million tons. With the expansion of distant-water fishing scale and the increasing intensity of resource development, there is an urgent need to improve unit operational efficiency and reduce operating costs through equipment upgrades, thereby promoting the transformation of distant-water fishing towards intelligent and intensive operations.

[0005] However, current distant-water fisheries still widely employ traditional manual sorting methods. This method relies on visual identification and manual sorting by operators, with a processing capacity of only 150-200 kg per hour and a sorting error rate as high as 8%-12%. As a result, labor costs account for more than 40% of the total cost of fish processing. This inefficient operating mode is not only labor-intensive and consumes a lot of manpower, but it is also difficult to adapt to the high-frequency, long-cycle operation requirements in the context of large-scale fishing by distant-water vessels, becoming a core bottleneck restricting the improvement of production capacity and efficiency optimization of my country's distant-water fisheries.

[0006] Although some enterprises have attempted to introduce automated sorting systems to replace manual operations in recent years, hoping to improve sorting efficiency and accuracy by relying on technologies such as machine vision, sensor recognition, and robotic arm operation, existing automated equipment still faces many challenges in practical applications on ocean-going vessels. The operating environment of ocean-going vessels is characterized by high salt spray, high humidity, strong corrosion, and continuous mechanical vibration, while most existing equipment is designed for land-based factory scenarios and lacks adaptability to the complex sea conditions of the open ocean. During long-term operation at sea, equipment failure rates remain high, with some models exceeding 30%, seriously affecting the continuity and stability of the sorting system and increasing the frequency of onboard maintenance and spare parts inventory costs. Furthermore, imported high-end sorting equipment generally costs over 1.2 million yuan per unit, has long maintenance cycles, and high dependence on foreign equipment, posing a strategic security risk. Independent research and development and improvement of domestically produced intelligent equipment, reducing reliance on foreign equipment, has become an important task to ensure the security of my country's ocean-going fisheries industry chain.

[0007] In terms of functional adaptability, traditional equipment also has significant limitations when dealing with mixed fishing scenarios involving multiple species of catch. Squid, due to their easily damaged soft bodies, mackerel, due to their easily detached scales, and saury, due to their slender bodies, are prone to getting stuck during transport. Different catch species all require different adaptations to sorting paths and transport methods. Existing equipment generally has a fixed structure and a single recognition logic, lacking dynamic adjustment capabilities. This necessitates frequent shutdowns to replace actuators during operations, disrupting operational continuity and severely impacting the overall operational efficiency and economic benefits of ocean-going vessels.

[0008] Based on the aforementioned industrial upgrading needs, technological adaptation challenges, and strategic security considerations, this invention develops a highly adaptable and innovative shipborne automated sorting machine for distant-water fisheries. This device integrates a multi-sensor fusion recognition system (recognition accuracy ≥98%), an adaptive vibration damping structure (vibration attenuation rate ≥85%), and a high-protection-level sealing design (IP66 salt spray resistance). While ensuring high recognition accuracy and sorting efficiency, it also ensures long-term stable operation under extreme conditions in the open ocean, such as high salt spray, high humidity, strong corrosion, and high vibration. This device effectively overcomes multiple bottlenecks in traditional equipment regarding operational efficiency, functional adaptability, and marine environmental adaptability. It possesses both promising prospects for widespread application and significant technological leadership value, and is of great practical significance for accelerating the intelligent upgrading of my country's distant-water fisheries equipment and contributing to the independent control of the industrial chain. Summary of the Invention

[0010] To address the problems of low sorting efficiency, poor environmental adaptability, and insufficient adaptability to mixed operations of deep-sea catches, this invention provides a shipborne, highly adaptable multimodal identification and intelligent sorting integrated device and operating method for catches. Through multi-sensor fusion identification, adaptive shock absorption protection, and flexible sorting technology, it achieves efficient and accurate sorting under harsh working conditions, significantly improving sorting efficiency and accuracy, thereby enhancing the efficiency and economy of fishery operations and reducing operating costs, in order to solve the aforementioned problems.

[0011] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0012] A shipborne, highly adaptable multimodal recognition and intelligent sorting integrated device for fish catch includes a fish feed module, a fish detection module, a fish sorting module, and a control system module connected in sequence. The fish feed module is equipped with a fish washing tank and a conveyor belt. The fish washing tank has an opening at the top and a filter plate at the bottom. A portion of the fish conveyor belt is connected to the fish washing tank. The starting end of the fish conveyor belt extends into the water and connects to the fish washing tank. The ending end of the fish conveyor belt is connected to a fish measuring conveyor belt. Baffles are installed on the fish conveyor belt. The ending end of the fish conveyor belt uses a roller conveyor system and is inclined. The measurement module is equipped with a transmission belt and a multi-sensor fusion recognition system. The conveyor belt of the catch measurement module is equipped with a distributor, a pulse airflow cleaning device, and a motor switch. The multi-sensor fusion recognition system is equipped with a camera, a near-infrared spectrometer, and a weighing sensor base. The catch sorting module is equipped with an anti-tangling feeding mechanism, a disc sorting device, a PLC control cabinet, and a catch collection box. The disc sorting device is equipped with a flip-up tray, a cylinder reset device, a cylinder flipping device, and a tray cleaning device. The PLC control cabinet is equipped with a motor start / stop switch. The control system module is equipped with a touch-screen operating system. The PLC control cabinet dynamically coordinates the operation of each module.

[0013] Furthermore, the filter plate at the bottom of the fish washing tank has several holes to filter out some of the debris during washing. A drain outlet is provided next to the fish washing tank to discharge sewage and clean the area under the filter plate from time to time.

[0014] Furthermore, the conveyor belt baffles of the fish feeding module adopt a single-baffle horizontal arrangement design: each baffle is arranged in a linear sequence in the conveying direction, and the distance between adjacent baffles is less than the minimum body width of squid, Japanese mackerel and saury; the horizontal projection of adjacent baffles in the vertical direction has an overlapping area, so as to realize the single-baffle single-limited conveying of a single fish, and ensure the intermittent conveying accuracy to meet the requirements of subsequent processes.

[0015] Furthermore, the distributor blades on the conveyor belt of the catch detection module can rotate to adjust the posture of the catch, enabling individual separation of the catch, which facilitates subsequent camera photography and recognition.

[0016] Furthermore, the catch detection module has a discharge hopper at the end of the conveyor belt to send the catch into the next stage. The discharge hopper gradually narrows from front to back, which is to further adjust the posture of the catch so that it can smoothly enter the anti-tangling feeding mechanism.

[0017] Furthermore, all conveyor belts in the catch feeding module, catch detection module, and catch sorting module are made of polyurethane conveyor belts with adjustable elastic modulus.

[0018] Furthermore, the anti-tangling feeding mechanism is equipped with an anti-tangling spiral guide channel. A flip-up tray on the sorting conveyor belt is placed at the opening below the anti-tangling spiral guide channel. The spiral guide channel gradually narrows from top to bottom, which is intended to further adjust the posture of the catch so that it can match the tray inlet of the sorting section to the greatest extent.

[0019] Furthermore, the tiltable tray is driven by a sprocket to reciprocate on a track. The tilting angle is controlled by a cylinder tilting device to achieve non-destructive sorting of the catch. The tilted tray carries the measured and identified catch to the designated sorting position. When the cylinder receives a control signal, it strikes the bottom of the tray upward, causing it to tilt downward and drop the catch into the collection box, thus achieving classification and sorting. The cylinder reset device returns the tray to its horizontal position. When the tray completes the tilting action and reaches the cleaning nozzle, the water flow cleans the inside of the tray. Then, the tray is controlled by the cylinder to return to its initial horizontal position for the next operation.

[0020] Furthermore, the metal material of this multimodal recognition and intelligent sorting integrated device is made of 316L stainless steel and is coated with multiple layers of anti-corrosion coating. Combined with the IP66-level sealing design, the disc-type sorting device base of the catch sorting module is equipped with a rubber shock-absorbing base to achieve a strong vibration buffering effect, which, together with the polyurethane conveyor belt with adjustable elastic modulus, forms a two-stage shock absorption system.

[0021] The operation method of the shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catch includes the following steps: (1) Manual coarse screening of the catch, removing broken individuals, and putting the remaining catch into a cleaning tank filled with clean seawater for simple cleaning; the perforated filter plate at the bottom of the tank filters the debris simultaneously. When the partially submerged conveyor belt is running, the catch is pushed up by the horizontal linear arrangement of single baffles. The distance between adjacent baffles is less than the minimum body width of the target catch and the vertical projection overlaps to achieve single-line limited conveying. Finally, the catch is sent to the inclined roller conveyor belt and then transferred to the subsequent conveyor belt. (2) The motor switch controls the start and stop of the conveyor belt and defines the central axis of various catches: the central axis of squid is the line connecting the top of the body and the midpoint of the neck; the central axis of saury and mackerel is the line connecting the center of the head and the center of the tail. During the conveying process, the baffle makes the central axis of the catch initially approximately parallel to the frame surface. Then, the posture is adjusted and the stacked individuals are separated by the evenly distributed plate on the conveyor belt to ensure that the central axis is as parallel as possible to the frame surface, which is convenient for subsequent image processing and judgment. The pulse airflow cleaning device sprays airflow to blow away excess water and residual impurities on the surface of the catch, and the weighing sensor collects the weight of the catch. (3) The photoelectric switch controls the camera and near-infrared spectrometer to start. The camera captures the shape, color, texture and other characteristics of the catch, and compares them with the pre-stored data to determine the type. The near-infrared spectrometer scans the catch and uploads the data to the control computer. The tapered discharge hopper, together with the anti-tangling spiral guide channel, adjusts the falling posture of the catch to avoid squid breakage, saury getting stuck, and mackerel scale falling off, and accurately matches the tray inlet. The PLC control box controls the operation of the conveyor belt track and sends different types of catch to the designated collection box according to the data uploaded by the camera. The cylinder controls the tilting tray limit block to realize the tilting of the catch. The empty tray tilts and moves with the conveyor belt to the cleaning nozzle to complete the cleaning, and then is reset by the reset device, finally realizing the classification and sorting of the catch.

[0022] After adopting the above technical solutions, the beneficial effects of the present invention are as follows: 1. The conveyor belt baffles of the catch feeding module adopt a single baffle horizontal arrangement design. The horizontal projections of adjacent baffles in the vertical direction have an overlapping area, which realizes the single baffle single-limited conveying of a single catch, ensuring the intermittent conveying accuracy to meet the requirements of subsequent processes.

[0023] 2. In order to achieve high-precision identification of multiple species of fish catches under complex sea conditions (overall accuracy ≥ 98%), the multi-sensor fusion identification system in this embodiment ( Figure 7 This approach abandons linear judgment based on a single sensor and adopts a decision-level fusion model based on confidence weighting. Multimodal fusion recognition significantly improves sorting accuracy. Through the collaboration of multiple sensors, including a camera (visual morphology recognition), a near-infrared spectrometer (physicochemical property detection), and a weighing sensor (quality verification), it achieves high-precision identification of different species such as squid, mackerel, and saury, with a comprehensive accuracy rate of ≥98%, which is more than 5 times higher than traditional manual sorting (false judgment rate of 8%~12%).

[0024] 3. The pulse airflow cleaning device automatically removes water stains and impurities adhering to the sensor surface, ensuring the long-term stable operation of the identification system in a humid salt spray environment.

[0025] 4. The anti-tangling spiral guide channel and the tapered discharge hopper work together to adjust the falling posture of the catch, avoiding damage to soft squid, getting stuck in long and thin saury, and losing scales from mackerel.

[0026] 5. The core of this disc-type sorting device lies in achieving active sliding control with "zero mechanical squeezing," abandoning traditional mechanical gripping.

[0027] 6. The core metal structure is made of 316L stainless steel with a multi-layer composite anti-corrosion coating. Combined with the IP66-level sealing design, it effectively resists high salt spray and high humidity corrosion, extending its service life by 3 times compared to ordinary carbon steel equipment.

[0028] 7. The rubber shock-absorbing base and the polyurethane conveyor belt with adjustable elastic modulus form a two-stage shock absorption system, which reduces the continuous mechanical vibration of the ship by ≥85% and significantly reduces the failure rate to below 5%.

[0029] 8. The automatic pallet cleaning device cleans the pallets in real time during the sorting cycle to avoid cross-contamination caused by mucus residue.

[0030] 9. The PLC control system achieves dynamic coordination and seamless connection of the feeding, detection and sorting modules, effectively eliminating the pain point of frequent downtime caused by asynchronous components in traditional equipment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the conveyor belt motor of the fish catch detection module in this invention; Figure 3 This is a schematic diagram of the photoelectric switch in this invention; Figure 4 This is a schematic diagram of the flip-over and reset device for the flip-over tray in this invention; Figure 5 This is a schematic diagram of the tray cleaning and PLC control cabinet for the fish sorting module in this invention; Figure 6 This is a schematic diagram illustrating the control of computer screen display in this invention; Figure 7 This is a schematic diagram of the multi-sensor system, which includes a camera, a near-infrared spectrometer, and a weighing sensor, in this invention. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0034] like Figure 1 As shown, a shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for catches includes a catch washing tank 1, a catch feeding module 2, a catch detection module 6, and a catch sorting module 17. The above modules are connected in sequence from front to back, and the catches are recognized and classified by feeding, detection, and sorting.

[0035] The mechanical structure of the conveyor section is the starting point of the entire automated process. First, the catch is manually coarsely screened to remove broken pieces. The remaining catch is then placed in washing tank 1, which contains clean seawater for simple washing. A filter plate 2 with many holes is installed at the bottom of the tank to filter out some impurities during washing. Conveyor belt 3 is partially submerged in the water. As conveyor belt 3 runs, the catch is gradually lifted by baffles 4. Baffles 4 are designed with a single baffle arranged horizontally, with each baffle arranged in a linear sequence in the conveying direction. The distance between adjacent baffles is less than the minimum body width of squid, mackerel, and saury. The horizontal projections of adjacent baffles overlap vertically, allowing for single-baffle, single-position conveying of a single catch. Baffles 4 carry the catch to roller conveyor belt 5, which is inclined, and the catch finally falls onto conveyor belt 6.

[0036] like Figure 2 As shown, the motor switch 23 of conveyor belt 6 is responsible for starting and stopping conveyor belt 6. For squid, the line connecting the apex of its body and the midpoint of its neck is defined as the central axis; for saury and mackerel, the line connecting the center of its head and the center of its tail is defined as the central axis. During the conveying process of conveyor belt 3, due to the action of baffle 4, the initial posture of squid, saury, and mackerel usually causes their respective central axes to fall into conveyor belt 6 approximately parallel to the frame surface. Further, the posture of squid, saury, and mackerel is adjusted by the evenly distributed plate 7 set on the conveyor belt, so that their final central axis is as parallel as possible to the frame surface, and further separates the stacked individuals that have not been separated, thus facilitating subsequent image processing and judgment. The pulse airflow cleaning device 8 blows away excess water and residual impurities from the surface of the catch with jet airflow, and the weighing sensor 9 can obtain the weight of the catch.

[0037] like Figure 3 The photoelectric switch 24 shown controls the camera 11 and the near-infrared spectrometer 12. The camera 11 captures the shape, color, texture and other features of the catch through the camera lens, and compares them with the pre-stored image data or feature data of various catch types to determine the type of catch. The near-infrared spectrometer 12 scans the catch, and the obtained data is uploaded to the control computer 17.

[0038] The tapered discharge hopper 12, in conjunction with the anti-tangling spiral guide trough 20, adjusts the falling posture of the catch, preventing damage to soft-bodied squid, slender saury from getting stuck, and mackerel scales from falling off, while also ensuring optimal fit with the tray 16 inlet. Figure 5 As shown, the PLC control box 15 controls the operation of the conveyor belt track 18. When the catch enters the tray 16, the data uploaded by the camera 11 to the control computer 17 sends different types of catch to the designated catch collection box 20 for dumping.

[0039] like Figure 4 As shown, the tiltable tray 16 is fixed by a U-shaped block 26 and hex bolts 27. The tilting device limit block 28 is controlled by a cylinder. When the cylinder is filled with air, it pushes the reset device limit block 28 upward a specified distance to tilt the tray. After the catch is tilted to the position specified by the control computer 17, the empty tray remains tilted and rotates with the conveyor belt, reaching the desired position. Figure 5 The 14 cleaning nozzles shown clean the tray, and then the limiting block 24 of the reset device pushes it upward a specified distance to achieve the reset effect, thus realizing the classification and sorting of different catches.

[0040] like Figure 7 As shown, the multi-sensor fusion recognition system abandons the linear judgment of a single sensor and adopts a decision-level fusion model based on confidence weighting. Multi-modal fusion recognition significantly improves sorting accuracy. Through the collaboration of multiple sensors, including a camera (visual morphology recognition), a near-infrared spectrometer (physicochemical property detection), and a weighing sensor (quality verification), it achieves high-precision identification of different species such as squid, mackerel, and saury.

[0041] like Figure 6 As shown, the shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for catches enables efficient sorting of mixed catches and real-time observation of catch parameters, significantly reducing labor intensity and improving sorting efficiency. The operation method of the shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for catches specifically includes the following steps: (1) Manual coarse screening of the catch, after removing broken individuals, the remaining catch is put into a cleaning tank filled with clean seawater to complete a simple cleaning; the filter plate at the bottom of the tank filters out debris, the conveyor belt is partially submerged in the water, and the catch is pushed up by a single baffle horizontal arrangement structure during operation. The spacing between adjacent baffles is adapted to the width of the catch and the projection overlaps to achieve single-line limited conveying. Finally, the catch is sent to the inclined roller conveyor belt and then transferred to the subsequent conveyor belt. (2) The motor controls the start and stop of the conveyor belt. After defining the central axis of various catches, the baffle is used to make the central axis of the catch initially approximately parallel to the frame surface. The posture is adjusted and the stacked individuals are separated by the evenly distributed plate on the conveyor belt to ensure that the central axis is as parallel as possible to the frame surface for easy subsequent processing. The pulse airflow cleaning device sprays airflow to remove moisture and residual impurities from the surface of the catches. The weighing sensor collects the weight of the catches. (3) The photoelectric switch controls the camera and near-infrared spectrometer to start. The camera captures the shape and color characteristics of the catch and compares them with the pre-stored data to determine the type. The near-infrared spectral data is uploaded to the control computer. The tapered discharge hopper works with the anti-tangling spiral guide trough to adjust the falling posture of the catch to avoid damage, jamming and scale loss, and match the pallet inlet. The PLC control box controls the conveyor belt track to send different types of catch to the designated collection box. The cylinder controls the tilting pallet limit block to realize the tilting of the catch. After the empty pallet is cleaned by the cleaning nozzle, it is reset by the reset device to complete the classification and sorting.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A shipborne, highly adaptable multimodal recognition and intelligent sorting integrated device for fish catches, characterized in that, The system includes a fish feeding module, a fish detection module, a fish sorting module, and a control system module connected in sequence. The fish feeding module has a fish washing tank and a conveyor belt. The fish washing tank has an open top and a filter plate at the bottom. The fish washing tank is connected to a portion of the fish conveyor belt. The starting end of the fish conveyor belt extends into the water and connects to the fish washing tank. The end of the fish conveyor belt connects to a fish measuring conveyor belt. The fish conveyor belt is equipped with baffles. The end of the fish conveyor belt uses a roller conveyor system and is inclined. The fish measuring module includes a drive belt and multiple... The sensor fusion identification system includes a fish catch measurement module with a conveyor belt equipped with a distributor, a pulse airflow cleaning device, and a motor switch. The multi-sensor fusion identification system also includes a camera, a near-infrared spectrometer, and a weighing sensor base. The fish catch sorting module includes an anti-tangling feeding mechanism, a disc-type sorting device, a PLC control cabinet, and a fish catch collection box. The disc-type sorting device includes a flip-up tray, a cylinder reset device, a cylinder flipping device, and a tray cleaning device. The PLC control cabinet has a motor start / stop switch, and the control system module has a touch-screen operating system. The PLC control cabinet dynamically coordinates the operation of each module.

2. The shipborne highly adaptable multimodal identification and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The bottom filter plate of the fish washing tank has several holes to filter out some of the debris during washing. A drain outlet is set next to the fish washing tank to discharge sewage and clean the area under the filter plate from time to time.

3. The shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The conveyor belt baffles of the catch feeding module adopt a single-baffle horizontal arrangement design: each baffle is arranged in a linear sequence in the conveying direction, and the distance between adjacent baffles is less than the minimum body width of squid, Japanese mackerel and saury; the horizontal projection of adjacent baffles in the vertical direction has an overlapping area, so as to realize the single-baffle single-limit conveying of a single catch, and ensure the intermittent conveying accuracy to meet the requirements of subsequent processes.

4. The shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The evenly distributed plate on the conveyor belt of the catch detection module can rotate to adjust the posture of the catch, thereby separating the catch into individual fish and facilitating subsequent camera photography and recognition.

5. The shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, At the end of the conveyor belt, the catch detection module has a discharge hopper that sends the catch into the next stage. The discharge hopper gradually narrows from front to back to further adjust the posture of the catch so that it can smoothly enter the anti-tangling feeding mechanism.

6. The shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, All conveyor belts in the catch feeding module, catch detection module, and catch sorting module are made of polyurethane conveyor belts with adjustable elastic modulus.

7. The shipborne highly adaptable multimodal identification and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The anti-tangling feeding mechanism is equipped with an anti-tangling spiral guide channel. A flip-up tray on the sorting conveyor belt is placed at the opening below the anti-tangling spiral guide channel. The spiral guide channel gradually narrows from top to bottom, which is intended to further adjust the posture of the catch so that it can match the tray inlet of the sorting section to the greatest extent.

8. The shipborne highly adaptable multimodal identification and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The tiltable tray is driven by a sprocket to reciprocate along a track. A cylinder tilting device controls the tilting angle to achieve non-destructive sorting of the catch. The tilted tray carries the measured and identified catch to the designated sorting position. When the cylinder receives a control signal, it strikes the bottom of the tray upwards, causing it to tilt downwards and drop the catch into the collection box, thus achieving sorting. The cylinder reset device returns the tray to its horizontal position. When the tray completes the tilting action and reaches the cleaning nozzle, the water flow cleans the inside of the tray. Then, the tray is controlled by the cylinder to return to its initial horizontal position for the next operation.

9. The shipborne highly adaptable multimodal identification and intelligent sorting integrated device for fish catches according to claim 1, characterized in that, The multimodal recognition and intelligent sorting integrated device uses 316L stainless steel and is coated with multiple layers of anti-corrosion coating. Combined with the IP66-level sealing design, the disc-shaped sorting device base of the catch sorting module is equipped with a rubber shock-absorbing base to achieve a strong vibration buffering effect, which, together with the polyurethane conveyor belt with adjustable elastic modulus, forms a two-stage shock absorption system.

10. The operation method of the shipborne highly adaptable multimodal recognition and intelligent sorting integrated device for fish catch as described in claim 1, characterized in that, Specifically, the steps include the following: (1) Manual coarse screening of the catch, after removing broken individuals, the remaining catch is put into a cleaning tank filled with clean seawater to complete a simple cleaning; the filter plate at the bottom of the tank filters out debris, the conveyor belt is partially submerged in the water, and the catch is pushed up by a single baffle horizontal arrangement structure during operation. The spacing between adjacent baffles is adapted to the width of the catch and the projection overlaps to achieve single-line limited conveying. Finally, the catch is sent to the inclined roller conveyor belt and then transferred to the subsequent conveyor belt. (2) The motor controls the start and stop of the conveyor belt. After defining the central axis of various catches, the baffle is used to make the central axis of the catch initially approximately parallel to the frame surface. The posture is adjusted and the stacked individuals are separated by the evenly distributed plate on the conveyor belt to ensure that the central axis is as parallel as possible to the frame surface for easy subsequent processing. The pulse airflow cleaning device sprays airflow to remove moisture and residual impurities from the surface of the catches. The weighing sensor collects the weight of the catches. (3) The photoelectric switch controls the camera and near-infrared spectrometer to start. The camera captures the shape and color characteristics of the catch and compares them with the pre-stored data to determine the type. The near-infrared spectral data is uploaded to the control computer. The tapered discharge hopper works with the anti-tangling spiral guide trough to adjust the falling posture of the catch to avoid damage, jamming and scale loss, and match the pallet inlet. The PLC control box controls the conveyor belt track to send different types of catch to the designated collection box. The cylinder controls the tilting pallet limit block to realize the tilting of the catch. After the empty pallet is cleaned by the cleaning nozzle, it is reset by the reset device to complete the classification and sorting.

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