A fish gathering system for quickly and efficiently gathering oceanic sauries by using light and an operating method thereof

Abstract

The application discloses a kind of fast and efficient light trapping ocean bluefin horse mackerel fish gathering system and its using method, by designing light control scheme, the method for optimizing big light pole fish gathering lamp lens angle reduces the phenomenon that bluefin horse mackerel runs net when net is lifted, bluefin horse mackerel ship is divided into 3 regions, and long light pole and several lens angle changes LED fish gathering lamp are arranged at netting position;When fishing operation is carried out, all LED fish gathering lamps are opened for a period of time to complete fish gathering, and then LED fish gathering lamps on the bow, stern small light pole are sequentially closed from the middle of the left shipboard of fish taking part by control room switch according to closing order, and bluefin horse mackerel is gradually attracted to the position of big light pole above the net according to the closing order;At this time, several rows of fish gathering lamps on the big light pole are sequentially closed to the outermost side of the light pole.The application prevents fish school from swimming outward and appearing the phenomenon that net is run during net lifting process, improves the fish gathering effect and fishing efficiency of bluefin horse mackerel light fishing from details, and greatly improves the fishing yield and single fishing economic benefit.

Description

TECHNICAL FIELD

[0001] The present application relates to the application field of ocean light-induced fishing of Pacific saury, and in particular to a fish gathering system for quickly and efficiently gathering oceanic Pacific saury using light and an operation method thereof. BACKGROUND

[0002] Light is one of the most important ecological factors in the marine environment, and it is closely related to the daily activities of marine organisms such as growth, development, reproduction, and feeding. With the rapid development of optoelectronic technology, LED fishing lights have been widely used in the field of marine and aquatic products, thereby enabling LED to replace natural light, ultraviolet light, and high-intensity halogen light, which directly affects the reproduction, development, state, quantity, and distribution of marine organisms, and has a profound impact on the marine fishing industry. China is rich in fishery resources. According to the 2022 National Fishery Economic Statistics Bulletin, China's marine fishing output value in 2022 was 248.91 billion yuan, and the fishing output was 13,000.45 tons, ranking among the world's top. Among them, the proportion of light fishing is large, especially in the South China Sea and the ocean fishing industry. On May 21, 2023, the latest notification from the Office of the Ministry of Agriculture and Rural Affairs on further strengthening the work of the North Pacific Ocean fishery compliance committee considered and adopted new measures for the conservation and management of Pacific saury resources. The Fisheries and Fishery Administration Bureau of the Ministry of Agriculture and Rural Affairs formulated a new "Pacific saury fishing quota allocation management plan", which allocates quotas to each Pacific saury production enterprise and fishing boat. Each enterprise and fishing boat should produce within the specified time and quota, and should not operate without or beyond the quota, nor should it operate outside the specified time.

[0003] In the Northwest Pacific Ocean, all side trawl fishing boats are equipped with LED fishing lights for light-induced fishing operations. LED fishing lights from different manufacturers can basically achieve red and white light switching. Therefore, under the quota system, it is particularly important to improve fishing yield and efficiency, so it is necessary to upgrade the fishing equipment for light-induced fishing operations and optimize the operation details, especially the reasonable distribution of fishing lights on the fishing boat body and the adjustment of the light angle on the fishing light pole, which narrows down the area for attracting fish from large to small. Improving yield from details, improving the fishing efficiency of oceanic fisheries, reducing fuel costs, reducing carbon emissions, and providing technical support for intelligent and precise fishing of China's oceanic fisheries.

[0004] In the existing Pacific saury light-induced fishing technology, the specific operation process includes attracting fish schools, concentrating and stabilizing fish schools, driving fish schools to gather, and finally concentrating the net. However, through field investigation, it is found that during the net lifting stage, the fish schools are not all in the middle of the net for pumping, and there is a phenomenon of fish escaping from both sides of the net, resulting in low net lifting efficiency. Although many fish are attracted, the equipment and fishing technology are not in place, resulting in too many escaped fish, which reduces the single fishing yield. SUMMARY

[0005] The present application relates to a kind of ocean saury is quickly and efficiently collected by light and the operation method of fish gathering system, by designing light control scheme, the method of fish gathering lamp lens angle, to reduce the phenomenon of saury running net when net is drawn.

[0006] The present application is realized by the following technical solutions:

[0007] A kind of ocean saury is quickly and efficiently collected by light and the operation method of fish gathering system, by designing light control scheme, the method of fish gathering lamp lens angle, to reduce the phenomenon of saury running net when net is drawn.

[0008] A kind of ocean saury is quickly and efficiently collected by light and the operation method of fish gathering system, by designing light control scheme, the method of fish gathering lamp lens angle, to reduce the phenomenon of saury running net when net is drawn.

[0009] (1) design a kind of saury ship area division scheme, and the saury ship is divided into stern, bow, big light pole net center area;

[0010] (2) in fish gathering stage, using sea scanning high-intensity light gradually leads the fish school in the distance to the vicinity of ship, then opens the LED fish gathering lamp white light of big light pole and small light pole, so that saury is gathered around the ship;

[0011] (3) in stable fish stage, when the fish school around the ship body reaches a certain degree of density, the LED fish gathering lamp white light is switched to LED fish gathering lamp red light, reduces the activity range of fish, and plays the role of stable fish and fish gathering;

[0012] (4) in fish driving stage, when the fish school is stable under the irradiation of LED fish gathering lamp red light, the LED fish gathering lamp red light of small light pole is extinguished from the left side of bow and stern area to the big light pole of right side of ship, only the LED fish gathering lamp red light of C area big light pole is reserved, and the fish school is gathered to C area through the LED fish gathering lamp red light of ship bow or stern;

[0013] (5) in fish gathering stage, from the right side of ship, each row of LED fish gathering lamp is extinguished in sequence, only the two rows of small-angle LED fish gathering lamp of the farthest end of big light pole is left, so that the fish school is gathered here.

[0014] (6) In the netting stage, when the winding side ring and the lower ring are collected, then the net is lifted and fixed on the ship side, and then the crew gathers the net from both sides of the bow and stern to the middle to form a "bag" shape, and then pulls the net to the fish pump;

[0015] (7) In the pump suction stage, open the fish pump at the right side of the ship to capture all the fish collected.

[0016] Preferably, the small light poles in step (2) are arranged around the bow, stern and left and right sides of the ship, with a distance of 1 meter between the two small light poles, and 3 LED fishing lights with varying lens angles are installed on each small light pole, each of which can realize free switching of red and white light.

[0017] Preferably, the large light pole in step (2) is installed at the middle of the right side, with a length of 15 meters, and the farthest end is directly above the middle of the spreading position.

[0018] Preferably, the large light pole in step (2) is installed with 8 rows of LED fishing lights, 3 in each row, totaling 24.

[0019] Preferably, the switching of the LED fishing lights in steps (2), (3), (4), and (5) is realized through the cabin command room.

[0020] Preferably, the LED fishing lights in the same row on the large light pole in step (5) have the same lens angle, and the lens angles of different rows vary, with the lens angle decreasing step by step from the ship side to the farthest end.

[0021] Preferably, the lens angles of each row on the large light pole from the ship side to the farthest end decrease step by step, with the lens angles being 90°, 90°, 65°, 65°, 50°, 50°, 30°, and 30°, respectively.

[0022] Preferably, the smaller the lens angle of the LED fishing light, the smaller the area of the light shining on the water, and correspondingly, the smaller the range of fish movement, the better the collection effect.

[0023] Preferably, the white light of the LED fishing light and the red light of the LED fishing light are used in front and back order, that is, in the initial stage of fish attraction and collection, the white light of the LED fishing light is used to attract fish deeper below the water surface and farther away from the ship on the sea surface, and the strong and bright light of the white light of the LED fishing light attracts the fish below the water surface and far away to the surrounding of the ship; the red light of the LED fishing light is the favorite color of the hairtail, which is used to stabilize the fish school, so that the fish school can swim and feed stably around the ship. If the white light of the LED fishing light and the red light of the LED fishing light are not used alternately, it will disturb the fish that have been attracted, making them too active and jumping out of the water, causing disturbance.

[0024] Beneficial effects: Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0025] (a) Based on the study of phototactic behavior of fish, this invention further designs a lighting control scheme and a fish-attracting lamp lens angle, which can maximize the purpose of attracting the catch to gather in the middle of the net, and has the characteristics of speed and efficiency.

[0026] (b) The fish-attracting system and its operation method proposed in this invention for quickly and efficiently attracting Pacific saury using light, compared with the traditional process of attracting fish-attracting fish-driving fish-hauling nets, can improve the fishing efficiency of fishing vessels that use side-lift nets to catch Pacific saury, and greatly increase the catch yield and the economic benefits of a single catch.

[0027] (c) This invention prevents fish from swimming outwards due to stress during the net-hauling process, thus improving the fish-gathering effect and fishing efficiency of saury light fishing from the details, and greatly increasing the catch yield and economic benefits of a single catch. Attached Figure Description

[0028] Figure 1 This is a diagram showing the arrangement of large and small light poles and the zoning of the fishing boat for the side-mounted net fishing vessel of the present invention. In the diagram, the red arrows indicate the order in which the lights of the large and small light poles are turned off during the fish-driving and fish-gathering stages.

[0029] Figure 2 This is a schematic diagram of the LED fish-attracting lamp structure of the present invention.

[0030] Figure 3 This is a simplified diagram of the headlight pole layout according to the present invention.

[0031] Figure 4 This is a simplified diagram of the illumination range of the LED fish-attracting light on the headlight pole at different lens angles according to the present invention. In the diagram, the red line represents the illumination range.

[0032] Figure 5 This is a schematic diagram of the installation structure of the small lamp post of the present invention.

[0033] Figure 6 This is a schematic diagram of the plano lens of the present invention.

[0034] Figure 7 This is a schematic diagram of the 90° lens of the present invention.

[0035] Figure 8 This is a schematic diagram of the 65° lens of the present invention.

[0036] Figure 9 This is a schematic diagram of the 50° lens of the present invention.

[0037] Figure 10 This is a schematic diagram of the 30° lens of the present invention. Detailed Implementation

[0038] 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.

[0039] A fish-attracting system and its operation method for rapidly and efficiently attracting Pacific saury using light, such as... Figure 1 As shown, the process includes the following steps: The jib fishing boat is divided into three areas: Area A is the stern, Area B is the bow, and Area C is the central area of ​​the net-laying area on the main light pole. Several LED fish-attracting lights with varying lens angles are installed on the small and main light poles. During fishing operations, all the LED fish-attracting lights are turned on for a period of time to attract fish. Then, the LED fish-attracting lights on the small light poles in both the left and right halves of the small light poles are turned off sequentially from the middle of the left side of the fish-collecting section via a switch in the control room. The saury are gradually attracted to the main light pole above the net according to the closing order. At this time, several rows of fish-attracting lights on the main light pole are turned off sequentially until the outermost light pole. The outermost fish-attracting light has the smallest lens angle, illuminating a small area on the sea surface. The saury's activity area is small and they are in the middle of the net. At this time, the side ring line and the lower line are hauled in. Then, the net is hoisted and fixed to the side of the boat, and the fish are gathered by the fish suction pump to complete the fishing operation.

[0040] The present invention will be further illustrated by a specific embodiment below:

[0041] 1. Regional division of fishing vessels

[0042] The saury boat is divided into three areas: the bow, the stern, and the fishing area marked by a large light pole. Small light poles are installed at the bow and stern, each equipped with three LED fish-attracting lights using flat lenses. Each light can switch between red and white light. These small light poles are arranged around the port and starboard sides, bow, and stern, with approximately 1 meter between each pole. Area C has one large light pole. Located on the starboard side, approximately 15 meters long, with its furthest point directly above the center of the net placement area, this pole has eight rows of three LED fish-attracting lights, totaling 24 lights. Figure 2 , 3 As shown.

[0043] 2. Installation of LED fish-attracting lights on the main light pole

[0044] The main light pole, approximately 15 meters long and located midway along the starboard side, extends to its farthest point directly above the midpoint of the net placement area. It is equipped with eight rows of LED fish-attracting lights, three lights per row, totaling 24 lights. The lens angles of the LED fish-attracting lights within the same row are identical, while the lens angles vary between rows. When the main light pole is extended, the lens angle decreases with distance from the ship's side. From the section along the ship's side to the farthest point, the lens angles of each row decrease in a stepped manner, with angles of 90°, 90°, 65°, 65°, 50°, 50°, 30°, and 30° respectively. Figures 4-10 As shown.

[0045] 3. Fish gathering stage

[0046] Use a strong spotlight to gradually attract fish from a distance to the vicinity of the boat, then turn on the white light of the LED fish-attracting lights to make the saury gather around the boat.

[0047] 4. Stabilizing Fish Market Phase

[0048] Once the fish around the boat become dense enough, switch the white light to red light to reduce the fish's activity range and help to keep the fish in place.

[0049] 5. Fish herding stage

[0050] When the fish are actively moving under the red light, the red lights on the smaller light poles are turned off sequentially from the bow and stern (port side) towards the starboard side, leaving only the red light on the large light pole in area C (the fish-collecting area). The fish will follow the red light, gathering at area C from the bow or stern. Figure 5 As shown.

[0051] 6. Fish gathering stage

[0052] Starting from the starboard side of the boat, turn off each row of LED fish-attracting lights in sequence, leaving only the two rows of small-angle LED fish-attracting lights at the farthest end of the main light pole, so that the fish gather there.

[0053] 7. Pump suction stage

[0054] At this point, the side ring line and the lower line are tightened, and then the net is hoisted and fixed to the side of the ship. The crew then gathers the net from both sides of the bow and stern toward the middle to form a "pocket" shape, and pulls the net to pull the fish to the fish suction pump. The fish suction pump is then turned on to catch the fish.

[0055] 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 fish aggregation system for fast and efficient aggregation of oceanic sauries using light, characterized in that, The Pacific saury boat is divided into A, B and C regions, A region is the stern, B region is the bow, C region is the center area of the large light pole, the bow and the stern are respectively provided with small light poles, the small light poles are arranged around the left and right sides of the bow and the stern, the distance between the two small light poles is 1 meter, three LED fishing lights with different lens angles are respectively arranged on each small light pole, a large light pole is arranged on the center area of the large light pole, the large light pole is arranged at the middle position of the right side, the farthest end of the large light pole is above the middle position of the placement of the net, a plurality of rows of LED fishing lights are arranged on the large light pole, each LED fishing light can realize the free switching of red and white light, the lens angles of the LED fishing lights in the same row of the large light pole are the same, the lens angles of different rows are different, the lens angle is smaller at the position farther from the ship side after the large light pole is unfolded, the smaller the lens angle of the LED fishing light, the smaller the area irradiated in the water, and correspondingly, the smaller the activity range of the fish, the better the collection effect.

2. The fish gathering system for quickly and efficiently gathering oceanic sauries using light according to claim 1, characterized in that, The large light pole is 15 meters long.

3. The fish gathering system for quickly and efficiently gathering oceanic sauries using light according to claim 1, characterized in that, Eight rows of LED fishing lights are arranged on the large light pole, and there are three LED fishing lights in each row, totaling 24 LED fishing lights.

4. The fish gathering system for quickly and efficiently gathering oceanic sauries using light according to claim 2, characterized in that, The lens angle of each row of the large light pole decreases in a stepwise manner from one end of the ship side to the farthest end, and the lens angles are 90°, 90°, 65°, 65°, 50°, 50°, 30° and 30° in sequence.

5. A method of operating a light-based fast and efficient fish aggregation system for aggregating oceanic sauries as claimed in claim 1, wherein, The method comprises the following steps: (1) in the fishing stage, the fish group far away is gradually gathered around the ship by using the sweeping sea spotlight, then the white light of the LED fishing light of the large light pole and the small light pole is turned on, so that the Pacific saury is gathered around the ship; (2) in the fish stabilizing stage, when the fish group around the ship body reaches a certain degree of density, the white light of the LED fishing light is switched to the red light of the LED fishing light, the activity range of the fish is reduced, and the fish stabilizing and gathering effect is achieved; (3) in the fish driving stage, when the fish group stably moves under the irradiation of the red light of the LED fishing light, the red light of the LED fishing light of the small light pole is sequentially turned off from the left side of the bow and the stern to the right side of the large light pole, only the red light of the LED fishing light of the large light pole in the C region is kept, and the fish group chases the red light of the LED fishing light and is gathered to the C region through the bow or the stern; (4) in the fish gathering stage, the LED fishing light on the large light pole is sequentially turned off from the right side of the ship side, only the small-angle LED fishing light at the farthest end of the large light pole is kept, so that the fish group is gathered there; (5) in the net lifting stage, the side ring and the lower cable are reeled in, then the net is lifted and fixed on the ship side, then the crew gathers the net from the bow and the stern to the middle to form a "bag", and then the net is pulled to the fish suction pump to catch the fish; (6) in the pump suction stage, the fish suction pump on the right side of the ship side is turned on to catch all the collected fish.

6. The operation method of the fishing system for quickly and efficiently collecting oceanic Pacific saury by using light according to claim 5, wherein the switching and turning on / off of the LED fishing light in steps (1), (2), (3) and (4) is realized in the cabin command room.

7. The method of operating a fish aggregation system for quickly and efficiently aggregating oceanic bluefin tuna using light according to claim 5, wherein, The LED fishing lamp white light and the LED fishing lamp red light are used in front and back order, that is, in the initial stage of fish guiding and fishing, the LED fishing lamp white light is used to lure the fish groups under the water surface and far away from the ship, and the fish groups under the water surface and far away from the ship are attracted to the periphery of the ship through the strong and bright light of the LED fishing lamp white light; the LED fishing lamp red light is the favorite light color of the hairtail, and is used to stabilize the fish groups, so that the fish groups are stabilized to perform the activity of foraging and swimming around the ship, and the LED fishing lamp white light and the LED fishing lamp red light are not used alternately.

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