JP6534130B2 - Fishery support method using fish collecting net and fish collecting net - Google Patents

Description

The present invention relates to a fishing support method using Fish network and Fish network for Fish fish, in particular, by using a fish habits, fish fishing support method using Fish network and Fish network to Fish the is there.

  In the past, when catching migratory fish such as tuna and bonito in the open ocean such as the Pacific Ocean and Atlantic Ocean, identify the sea water temperature and the flow of tides, and use the fish finder etc. ing. As a result of the measurement by the fish finder, if there is no fish school of the fish species to be caught, the search for the fish school is repeated again.

  For this reason, in order to reliably search for a fish school of the target fish species on a large ocean, it is necessary to carry out many movements and searches, or to operate a fleet size by a large number of fishing vessels, which causes cost increase and crew members Burden is a problem.

From such a problem, the invention described in Patent Document 1 discloses a fishery support system using an unmanned aerial vehicle.
According to the invention described in Patent Document 1, moving pictures of sea level are taken by a camera mounted on an unmanned aerial vehicle, a school of fish is detected from acquired moving picture image data, and position information of the school of fish is efficiently transmitted to the fishing boat. A fishery support system capable of finding a school of fish is disclosed.

JP, 2017-104025, A

  However, the invention described in Patent Document 1 does not take into consideration the weather conditions when flying an unmanned aerial vehicle, and for example, it is not possible to fly the unmanned aerial vehicle depending on the strength of the wind on the sea and discover fish schools It becomes difficult.

The present invention has been made in view of the problems, and a fish collection net and a fishery support method using the fish collection net that enable collecting and collecting fish by utilizing the habits of fish which is a target fish species for fishing Intended to provide.

  In order to achieve the above object, the fish collection net of the present invention is a fish collection net for collecting fish to be caught, and a frame forming an outer shape of the fish collection net, and a plurality of sections are formed inside the frame. A plurality of partition parts for the purpose, a net part in which a net is disposed in the partition formed by the partition parts, and an end part of the frame are connected in series, and fluid is injected into the inside of the frame and the partition parts Alternatively, it is characterized by comprising a hose for discharging, a buoy connected to the hose, and a plurality of floats for suspending the fish net from the sea surface to a predetermined depth.

  Further, the frame is characterized in that it has a substantially spindle shape or a substantially rod shape.

  Further, the plurality of partition portions are arranged at an inclination of 30 ° to 50 ° with respect to the longitudinal direction of the frame.

  In addition, a plurality of pseudo seaweeds formed in a flat plate shape are attached to the mesh portion.

  The buoy is characterized by including a GPS antenna connected to a GPS receiver, a satellite antenna connected to a satellite transmitter, an LED light emitting unit, a camera, and a sonar.

  Further, the frame and the partition portion are connected in series, and are formed of a hollow member.

  The hollow member is characterized by comprising an outer member forming an outer shape of the frame and an inner member concentrically disposed inside the outer member.

  Further, the outer member is formed of an inelastic material, and the inner member is formed of an elastic material that is expanded and expanded by pressure due to the injection of a fluid.

  Further, the frame and the partition expand in the longitudinal direction and the width direction by the injection of the fluid, and the inclination of the partition is reduced by the discharge of the fluid so as to overlap the one side end of the frame. It is characterized by contracting.

Further, according to the fishery support method using the fish collection net of the present invention, position information of the fish collection net and fish school information of a fish school collected around the fish collection net in the fish collection net which expands and expands by injection of fluid (seawater) ; A fishing support method using a fish collection net connected to a buoy for transmitting shooting information obtained by photographing a school of fish to a fishing boat and collecting and catching fish for fishing purpose, wherein the fishing boat emits a plurality of fish collection nets to the sea A fluid is injected into each of the plurality of fishnets to extend and expand, and the buoy detects a school of fish collected around the fishnet and captures an image, and information on the school of fish and the information on the location of the fishnet It is characterized by transmitting to the said fishing boat with information, and the said fishing boat which arrived at the said fish net catches the fish which gathers at the said fish net.

  Further, the fish collection net is contracted by discharging the injected fluid, and can be recovered by the fishing boat.

  According to the present invention, a plurality of aquatic animals (such as whales and whale sharks) floating in water at a predetermined depth from the surface of the sea and fish nets resembling floating planks are installed to create aquatic animals (such as whales and whale sharks) or It is possible to collect habitable migrating fish that gather in driftwood, and check whether it is gathered in the fishnet by the sonar and camera mounted on the buoy, and rush on the fishing net where the largest number of fish are gathered. As a result, it is possible to catch fish to be caught, and to save labor and improve efficiency of the fishery.

  Moreover, it is expanded by injecting a fluid into the frame and partition part which comprise a fish collecting net, and it contracts by discharging a fluid, it becomes compact size and it becomes easy to accommodate in a fishing boat.

It is the schematic which shows a fish net. It is a top view which shows the structure of a fish net. Fig.3 (a) is sectional drawing which showed AA cross section shown in FIG. 1, FIG.3 (b) is a figure which showed the adhesion part of a frame and a mesh part. FIG. 5 shows a pump for injecting or discharging fluid into a fishnet. It is a figure showing composition of a buoy. It is a figure showing composition of a buoy. FIGS. 7 (a) to 7 (c) are diagrams showing a fishing support method using a fish collection net. Fig.8 (a)-(b) is the figure which showed the fishery support method which used the fish net. Fig.9 (a)-(c) is the figure which showed the state which the fish collecting net shrink | contracts.

Next, with reference to the drawings, a fish collection net and a fishery support method using the fish collection net according to the present embodiment will be described.
1 is a schematic view showing a fish collecting net, FIG. 2 is a top view showing a structure of a fish collecting net, and FIG. 3 (a) is a cross sectional view showing an AA cross section shown in FIG. 3 (b) is a view showing a bonded portion of the frame and the mesh portion.
As shown in FIG. 1, the fish net 100 released from the fishing boat 1 to the sea is moored to the buoy 200 via the rope 201 and has a depth (about the same depth as the aquatic animal swims in the fish net 100) For example, a plurality of floats 300 are connected via a rope 301 so as to float on 3 to 5 m). When the fishnet 100 is floated on the surface of the sea, it may be flipped or twisted under the influence of wind and waves, so it is floated to a predetermined depth to prevent it.

  The fish collecting net 100 has a substantially spindle-like shape resembling that of a large aquatic animal such as a whale or a whale shark as shown in FIG. 2, and the frame 101 forming the outer shape of the fish collecting net 100 and the inside of the frame 1010 , And a mesh portion 103 in which a mesh is disposed in the division formed by the partition portion 102. The mesh portion 103 is attached with a plurality of pseudo seaweeds 103 a described later. In addition, the shape of the fish collecting net 100 may be, for example, a rod-like shape like a driftwood.

  The frame body 101 and the partition portion 102 communicate with each other and are integrated, and the frame body 101 and the partition portion 102 are formed of a telescopic hollow member, and a fluid (hereinafter referred to as seawater) inside the hollow member The pressure of the seawater automatically expands in the longitudinal direction and the width direction according to the pressure of the seawater, while the release of the seawater automatically releases the pressure of the seawater and automatically contracts.

  The partition portion 102 is formed in the frame 101 so as to be inclined at an angle α with respect to the longitudinal direction of the fish collection net 100. The angle α is, for example, in the range of 30 ° to 50 °. Moreover, although a division is formed in the frame 101 by the three partition parts 102 in the figure, it is possible to change the number of the partition parts 102 according to the size of the fish collecting net 100.

  The plurality of partition portions 102 overlap one side end of the frame body 101 so that the angle α becomes smaller when the fish collection net 100 is contracted. Therefore, when the fish collection net 100 contracts, the plurality of partition portions 102 also become substantially straight with respect to the frame body 101, and the partition portions 102 do not overlap with each other so as to be compact in size. There is no need to store it because it does not have an extra thickness.

  The frame 101 has a total length of about 10 m to 30 m when expanded and a total length of about 5 to 15 m when contracted according to the size of the above-described aquatic animal.

  At one end of the frame 101, a hose 103 for injecting or wicking seawater into the frame 101 and the partition portion 102 is provided continuously, and at the end of the hose 103, a valve 104 is provided.

  As shown in FIG. 3A, hollow members for forming the frame 101 are concentrically disposed inside the outer member 101a forming the outer shape of the frame 101 main body and the outer member 101a, and seawater is injected therein. And an inner member 101b.

  The outer member 101a is a hose for firefighting and has a mechanism for extending by pressure upon flowing water to form a straight line, and is formed of a material that is inelastic and relatively soft and bendable. For example, it is made of woven synthetic fibers such as cotton, nylon, polyester, or polypropylene.

The inner member 101b is formed of a material such as natural rubber or synthetic rubber, and when seawater is injected, it extends up to about three to six times from the length in the relaxed or non-elongated state, and its own length Expand radially outward or laterally with respect to the
In addition, since the structure of the partition part 102 connected to the frame 101 is also the same structure as the above-mentioned frame 101, description is abbreviate | omitted.

  A plurality of pseudo seaweeds 103 a are attached to the mesh portion 103. The simulated seaweed 103 a is formed in a vinyl-like flat plate shape, and is bound to the mesh portion 103. By attaching the plurality of pseudo seaweeds 103 a to the net portion 103, the hiding place of the collected fish can be prevented from leaving the fish collecting net 100.

  Further, as shown in FIG. 3B, the mesh portion 103 is attached to the frame 101 via a flat plate member 103 b bonded to the frame 101. The flat plate member 103 b is formed of cloth or synthetic fiber, and fixes the mesh portion 103 to the frame 101 by inserting a part of the mesh portion 103 through the hole 103 c formed at one end.

FIG. 4 is a view showing a pump system for injecting or scraping seawater into a frame and a partition part constituting a fish collection net.
As illustrated, the pump system 400 is installed in the fishing boat 1 and is for injecting or sucking seawater into the frame 101 and the partition portion 102 constituting the fish collection net 100.
In the pump system 400, a pump 401, a hose 402 connected to the pump 401, and a pump valve 403, an injection valve 404, and a suction valve 405 are attached to various places of the hose 402.

  The pumping valve 403 is a valve which opens when pumping up seawater, the injection valve 404 is a valve which is opened when injecting seawater into the frame 101 and the partition portion 102, and the suction valve 404 is a valve which is the frame 101 and the partition portion It is a valve that opens when sucking in the seawater being injected in 102.

Next, injection or absorption of seawater into the fish collecting net 100 will be described.
Regarding Injection of Sea Water First, the valve 104 provided in the fish collection net 100 to be discharged to the sea is connected to the injection valve 403 of the pump system 400.
Next, the pump valve 403 and the injection valve 404 are released and the pump 401 is operated. At this time, the suction valve 405 is closed. The operation of the pump 401 injects seawater into the fish collecting net 100 via the pumping valve 403 and the injection valve 404. Thereby, the frame 101 and the partition part 102 are automatically expanded by the pressure of the injected seawater, and the whole fish net 100 is formed.

Regarding Discharge of Fluid When the fish collection net 100 discharged to the sea is collected by the fishing boat 1, the valve 105 provided on the fish collection net 100 is connected to the suction valve 405.
Next, the suction valve 405 and the injection valve 404 are released, and the pump 401 is operated. At this time, the pumping valve 403 is closed.
By operating the pump 401, the seawater in the fish collection net 100 is sucked from the suction valve, and the seawater is discharged from the injection valve 404 in reverse, thereby sucking the seawater in the fish collection net 100 and automatically contracting the fish collection net 100.

5 and 6 are diagrams showing the configuration of the buoy.
The buoy 200 body comprises an upper pole 201, a float 202, upper and lower dampers 203 and 204 attached to upper and lower portions of the float 202, and a camera 205.
The top pole 201 is attached to the center of the float 202, and has an LED light emitting unit 206 at its tip and a GPS antenna 207 and a satellite antenna 208 inside.

  The float 202 is made of rolled steel, stainless steel, aluminum, a metal such as an aluminum alloy, etc., and filled with polystyrene foam as a buoyant body and sealed therein. The float 202 can also be formed of a synthetic resin such as fiber reinforced plastic (FRP), and a urethane foam resin or the like may be used as a buoyant body filled inside.

  The upper damper 203 is ring-shaped, mounted near the top of the float 202 and mounted to balance the floating of the buoy 200 body over the water. The lower damper 204 is for supporting the body of the buoy 200 on the ground and for protecting the camera 205. The lower damper 204 is composed of a leg 204a extending downward from the float 202 and a ring 204b connected to an end of the leg 204a.

  Further, a mooring fitting 204c for mooring the fish collecting net 100 is attached to a part of the leg portion 204a constituting the lower damper 200.

  The float 202 is internally equipped with a GPS receiver 209, a satellite transmitter 210, a control unit 211, a battery 212, a storage unit 213, a camera 205, and a sonar 215.

  The GPS antenna 207 is connected to the GPS receiver 209 and receives a GPS signal for measuring the position of the buoy 200 main body. The satellite transmitter 210 is connected to the satellite antenna 208, and transmits to the hull 1 position information of the buoy 200 main body, an image photographed by the camera 205, and fish school information detected by the sonar 215.

  The storage unit 213 stores positional information of the buoy 200 main body, an image captured by the camera 205, and fish school information detected by the sonar 215. The camera 205 captures an image in the vicinity of the lower surface of the fish collecting net 100. The sonar 215 can detect a school of fish collecting near the lower surface of the fish net 100. Note that only when a school of fish is detected by the sonar 215, the state may be photographed by the camera 214.

  The control unit 211 controls these units and supplies power from the connected battery 212.

Next, the fishery support method using a fish collection net will be described.
7 (a)-(c) and 8 (a)-(b) are diagrams showing a fishery support method using a fish collection net, and FIGS. 9 (a)-(c) show a fish collection net It is the figure which showed the state which shrink | contracts.
In the present embodiment, a skipjack, which is one of the migratory fishes and a fish species for fishing purpose, will be described as an example, but even with other migratory fish, it is possible to catch using the method of the present invention It is.

As shown in FIG. 7 (a), first, the fishing net 1 is released from the fishing boat 1 to the sea, and the pump system 400 is operated to inject seawater into the frame 101 and the partition 102 and expand by the water pressure of seawater. Let
A plurality of fish nets 100 are released to the sea at intervals of several hundred meters to several kilometers.

  Next, as shown in FIG. 7 (b), sardines, etc., which are relatively small migrating fish, gather in a group directly under and around the fish collection net 100. The collected sardines travel under and around the fish net 100 while hiding in the pseudo-seaweed 103 a bound to the mesh portion 103 of the fish net 100.

  Next, as shown in FIG. 7 (c), bonitos which feed on sardines and the like that migrate beneath and around the fish net 100 gather. In addition, since the skipjack itself has the habit of being attached to aquatic animals such as whales and whale sharks and drifting trees, it gathers in the fishnet 100 which resembles the figure of aquatic animals.

When the sonar 215 mounted on the buoy 200 detects bonito collected in the fishnet 100, it transmits fish school information to the fishing boat 1 via the satellite antenna 208. In the fishing boat 1, when the school of fish information is received, the flock of bonito is confirmed by the photographed image from the camera 205 which is transmitted as needed,
Further, the position information received by the GPS receiver 209 mounted on the buoy 200 is confirmed, and the fishing boat 1 moves to the position of the fish collection net 100.

  Then, as shown in FIG. 8 (a), when the fishing boat 1 comes to the position of the fish collection net 100, the bonito is caught by single fishing. Then, when the skipjack fish has been caught, as shown in FIG. 8 (b), the fish collection net 100 is collected.

  In order to recover the fish net 100 to the fishing boat 1, as described above, the valve 105 connected to the fish net 100 is connected to the suction valve 405 of the pump system 400, and the pump 401 is operated to The seawater which has been injected into the frame body 101 and the partition portion 102 is absorbed, and the fish net 100 is contracted.

When the fish collecting net 100 absorbs seawater by the pump system 400, it contracts as shown in FIGS. 9 (a) to 9 (c).
First, as shown in FIG. 9A, when seawater is absorbed from the frame body 101 and the partition portion 102 of the fish collecting net 100 by the pump system 400, the contraction of the whole fish collecting net 100 starts. Then, as the width of the mesh portion 103 becomes narrower, the respective end portions of the plurality of partition portions 102 begin to move in the arrow direction. That is, the angle α of the partition 102 gradually decreases.

  Next, as shown in FIG. 9 (b), while seawater is absorbed from the frame 101 and the partition part 102, the length of the fish collection net 100 is shortened and the width is narrowed. Then, the end of the partition 102 further moves in the arrow direction.

  Furthermore, as shown in FIG. 9C, when seawater is further absorbed from the frame body 101 and the partition portion 102, the fish collection net 100 becomes an elongated shape, and the width of the net portion 103 becomes narrow. It moves to a position where 102 overlaps with one side end of the frame 101.

The fishnet 100 thus contracted is deformed into a shape such that the partition portion 102 is substantially in a straight line with the frame body 101, so that the plurality of partition portions 102 do not overlap, and the size becomes compact. It does not need to be extra thick when winding up.
Then, returning to FIG. 8 (b), the contracted fishing net 100 is wound up by the storage drum 300 installed in the fishing boat 1 and stored in the fishing boat 1.

  Furthermore, if a planned catch amount can be obtained, while confirming the position of the fish collection net 100 released to other places with the position information received by the GPS receiver 209 mounted on the buoy 200, sequentially, The fish collecting net 100 is collected, and after all the fish collecting nets 100 have been collected, the return route is taken.

  According to the present embodiment, a fish net having a behavior of drifting along with driftwood and large aquatic animals by releasing a plurality of fishnets to the sea is as large as driftwood and large aquatic animals. Gather in The fish collected in the fishnet are detected by sonar, and the camera shoots the fish to the position of the fishnet that collects the most by the video captured by the camera.

  As described above, searching for a school of fish for fishing in a large area is time-consuming and costly. However, by releasing multiple fishnets on the ocean, fish for fishing is collected at the position of the fishnet. Since it is possible to catch, it is possible to shorten the time of the voyage itself and to reduce the cost.

Reference Signs List 100 fish net 101 frame body 102 net portion 103 hose 104 cock 200 buoy 300 float

Claims (11)

It is a collecting net for collecting fish to be caught,
A frame forming an outer shape of the fish net;
A plurality of partition parts for forming a plurality of compartments inside the frame;
A mesh portion in which a mesh is disposed in a section formed by the partition portion;
A hose connected to an end of the frame, for injecting or discharging a fluid into the frame and the partition;
A buoy connected to the hose,
A fishnet characterized by comprising a plurality of floats for suspending the fishnet to a predetermined depth from a sea surface.   The fish collecting net according to claim 1, wherein the frame is substantially spindle-shaped or rod-shaped.   The fish collection net according to claim 1, wherein the plurality of partition parts are arranged at an inclination of 30 ° to 50 ° with respect to the longitudinal direction of the frame.   The fish net according to claim 1, wherein a plurality of pseudo seaweeds formed in a flat plate shape are attached to the net portion.   The buoy according to claim 1, wherein the buoy includes a GPS antenna connected to a GPS receiver, a satellite antenna connected to a satellite transmitter, an LED light emitting unit, a camera, and a sonar. Of fish nets.   The fish collecting net according to any one of claims 1 to 3, wherein the frame and the partition portion communicate with each other and are formed of a hollow member.   The fish collecting net according to claim 6, wherein the hollow member is composed of an outer member forming an outer shape of the frame and an inner member concentrically disposed inside the outer member.   The fish collecting net according to claim 7, wherein the outer member is formed of an inelastic material, and the inner member is formed of an elastic material that expands and expands by pressure due to the injection of a fluid.   The frame and the partition expand in the longitudinal direction and the width direction by the injection of the fluid, and the discharge of the fluid shrinks so that the inclination of the partition decreases and overlaps the one side end of the frame. The fish net according to any one of claims 1 to 3, characterized in that. In Fish network that extended and inflated by injection of a fluid (sea water), the buoy for transmitting said population fishnet location information and fish school fish school information gathered around the Fish networks, as well as imaging information obtained by photographing the fish fishing boat A fishery support method using a fish collection net that is connected and collects and catches fish for fishing purpose,
To release a multiple of Fish network to the sea from the fishing boat,
Fluid is injected into each of the plurality of fish collecting nets to extend and expand;
The buoy detects a school of fish collected around the fish net and captures an image, and transmits fish school information and shooting information to the fishing boat together with the location information of the fish net,
A fishing support method using a fish collection net, characterized in that the fishing vessels arriving at the fish collection net catch fish collected in the fish collection net. 11. The method according to claim 10, wherein the fish collection net shrinks by discharging the injected fluid and becomes recoverable by the fishing boat.