JP2003185746A - Trawl operation method, and monitor for fish moving- behavior used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To conduct an exact and efficient operation by trawling while displaying, on one monitor, a relative position between discovered fishes and a trawl fishing gear of own boat using the own boat as the center in a trawl operation. <P>SOLUTION: In this trawl operation method for fishing the discovered fishes in the trawl fishing gear 4 while trawling, by the fishing boat 2, the trawl fishing gear 4 injected from the fishing boat 2 into the sea, a net port 7a of the fishing gear 4 is guided to a position of the discovered fishes while confirming at least the relative position between the discovered fishes and the trawl fishing gear 4 of the fishing boat 2, on the one screen 47. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trawl operating method and a fish school dynamics monitoring apparatus used for the trawl operating method. In particular, the present invention relates to a trawl operation method suitable for catching a discovered fish school and a fish school dynamic monitoring device used for the trawl operation method.

[0002]

2. Description of the Related Art Conventionally, as one of the fishing methods for catching fish in the sea, a bag-shaped net with an opening called a trawl net (bottomed net) is thrown into the sea and the net is opened. The trawl fishing method has been adopted in which the fish is caught in a trawl net through the opening by towing with a fishing boat with the side facing forward.

Further, conventionally, in such a trawl fishing method, a so-called otter board, which is a so-called otter board, may be used from the viewpoint of appropriately expanding the trawl net to efficiently catch the fish. .

As shown in FIG. 8, the expansion net 1 constitutes a part of a trawl fishing gear 4 by being connected to a pair of cord-shaped warps 3 fed from a fishing boat 2. Each expansion net 1
On the downstream side of the towing direction, a trawl net 7 is connected via an otter component 6 and the like.

When operating with such trawl fishing gear 4, when the trawl net 7 is towed by the fishing boat 2 via the warp 3, both expanding net bodies 1 receive water pressure and separate from each other. Since it moves, the net opening 7a of the trawl net 7 connected to the downstream side can be expanded.

[0006]

By the way, in the case of performing such a trawling operation, the position of the trawl fishing gear 4, the position where the fish school to be caught is found, etc. are properly grasped, and the net mouth of the trawl net 7 is properly grasped. It is necessary to properly move 7a to the position of the fish school.

A detector such as a so-called fish finder is known for grasping the position of the school of fish and the position of the trawl net 7, etc. No clear disclosure has yet been made regarding fishing methods for efficient fishing.

The present invention has been made in view of the above problems, and the towing is performed while displaying the relative position of the discovered fish school and the trawl fishing gear of the own ship on a single monitor centering on the own ship during the trawl operation. Therefore, an object of the present invention is to provide a trawling operation method capable of performing an appropriate and efficient operation, and a fish school dynamic monitoring device used for the method.

[0009]

In order to achieve the above-mentioned object, the trawling method according to claim 1 of the present invention finds a trawl fishing gear thrown into the sea from a fishing boat in the trawl fishing gear while towing it by the fishing boat. In the trawl operation method for catching a school of fish, at least the relative position between the discovered group of fish and the trawl gear of the fishing boat is confirmed on one screen, and the net mouth of the fishing gear is guided to the position of the discovered fish group.

By adopting such a method, information indicating the relative positions of the discovered fish school and the trawl fishing gear can be gathered on one screen, and towing can be performed while watching this screen. Therefore, proper and stable troll operation can be performed.

The trawling method according to claim 2 is characterized in that, in claim 1, the towing operation is performed while grasping the position of the fishing boat itself.

By adopting such a method, it is possible to carry out towing while ensuring the safety of the fishing boat itself, so that more stable operation can be performed.

According to another aspect of the present invention, there is provided a fish fleet dynamic monitoring device for use in a trawl operation method for catching a found fish fleet in the trawl fishing gear while towing the trawl fishing gear thrown into the sea from the fishing boat. At least the relative position of the discovered fish group and the trawl gear of the fishing boat can be displayed on one screen.

By adopting such a structure, the net mouth of the trawl fishing gear can be guided to the discovered fish school while observing the fish school dynamics monitoring monitor during towing, so that proper and stable trawl operation can be performed. You can

The fish movement monitoring apparatus according to a fourth aspect of the present invention is capable of outputting relative net position data indicating a relative position of the trawl net to the fishing boat and relative position data indicating a relative position of the fish school to the fishing boat. Scanning sonar, measuring fish finder capable of outputting fish school marker data, fish volume data, and depth data of the location where the fish school was found, and data on the distance between a pair of expanded nets arranged on the trawl gear. , A trawl sonar capable of outputting the data of the head rope water depth of the trawl, the mouth width and the height of the trawl, and a trawl winch control device capable of outputting the data of the warp length and the warp tension of the trawl winch. And based on each information data output from each of the above-mentioned devices, at least the discovered fish centering on its own ship and the It is characterized by having a dynamic monitoring control unit for displaying the information of the relative position between the fishing trawl fishing gear on one of the dynamic monitoring monitor.

By adopting such a structure, the relative position between the school of fish and the trawl fishing gear can be detected more easily and appropriately.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a trawl operating method and a fish school dynamics monitoring apparatus used therefor according to the present invention will be described below with reference to FIGS. 1 to 7. It should be noted that parts having the same or similar basic structure to those of the related art will be described using the same reference numerals.

FIG. 1 shows a fish school movement monitoring apparatus 1 according to the present invention.
0 shows an embodiment of 0, and the fish school dynamic state monitoring device 10 generates relative net position data showing the relative position of the trawl fishing gear 4 with respect to the fishing boat 2 and relative position data showing the relative position of the fish school with respect to the fishing boat 2. It has a scanning sonar 11 capable of outputting.

The scanning sonar 11 has a net position detecting transbonder 13, and the net position detecting transbonder 13 sends a detection wave such as an ultrasonic wave indicating the position of the trawl fishing gear 4 to the fishing boat 2 side. It is designed to transmit waves. The net position detecting trans bonder 13 may be arranged near the trawl net 7 of the trawl fishing gear 4, for example.

The scanning sonar 11 has an elevating device 14 on the bottom side of the fishing boat 2.
The transmission / reception device 15 for scanning performs transmission / reception of a detection wave such as an ultrasonic wave with the network position detection transbonder 13.

Therefore, since the detection wave transmitted from the net position detecting transbonder 13 can be received via the elevating device 14, the position of the trawl fishing gear 4 can be detected. There is.

Further, the transmitting / receiving device for scanning 15
Is configured to receive a detection wave such as an ultrasonic wave transmitted to and reflected by a school of fish.

The lifting device 14 includes the lifting device 14
A receiver 17 for converting the detection wave from the net position detecting transbonder 13 and the detection wave from the school of fish received by the electric wave into an electric signal, and transmitting the signal received by the receiver 17. Is connected to the transmitter 18.

Further, the scanning sonar 11 is
It has a computing unit 20 in the central monitoring room 19 of the fishing boat 2,
The calculator 20 receives the signal from the ship position detecting transbonder 13 transmitted from the transmitter 18, and calculates the relative position of the trawl fishing gear 4 with respect to the fishing boat 2 based on this signal. There is. Then, the arithmetic unit 20 outputs the calculation result as relative net position data. Furthermore, the calculator 20 receives a signal from the fish school transmitted from the transmitter 18, and calculates the relative position of the fish school with respect to the fishing boat 2 based on this signal. Then, the arithmetic unit 20 outputs the arithmetic result as relative position data.

A scanning-side monitor 21 is connected to the computing unit 20, and the scanning-side monitor 21 is connected.
Inputs the relative net position data and the relative position data output by the arithmetic unit 20, and displays the information of the relative position of the trawl fishing net 4 and the relative position of the fish school based on this data, for example, by using an image or a character. It is supposed to be displayed. Further, an operation remote controller 22 for operating the arithmetic unit 20 is connected to the arithmetic unit 20. The information on the relative position of the trawl fishing gear 4 and the information on the relative position of the school of fish are also displayed on the scanning side auxiliary monitor 25 arranged in the auxiliary monitoring room 24.

The fish school dynamics monitoring apparatus 10 in this embodiment
Has a weighing fish finder 27 capable of outputting marker data of a found fish school, fish quantity data for detecting the quantity of the fish school based on a density distribution and the like, and water depth data of a found position of the fish school.

This measuring fish finder 27 has a fish quantity detecting transducer / receiver 28 on the bottom side of the ship, and this fish quantity detecting transducer / transmitter 28 transmits to the fish school and is reflected. It is designed to receive detection waves such as ultrasonic waves. In addition, the measuring fish finder 27 is provided with a water depth detecting transducer 2 on the bottom side of the ship.
This water depth detecting wave transmitter / receiver 29 also receives a detection wave such as an ultrasonic wave transmitted to and reflected by a school of fish.

Both the detection waves received by the fish quantity detecting wave transmitter / receiver 28 and the water depth detecting wave transmitter / receiver 29 are:
It is designed to be converted into an electrical signal.

The measuring fish finder 27 has a central processing unit 30 in the central monitoring room 19. The central processing unit 30 includes the fish amount detecting wave transmitter / receiver 28 and the water depth detecting unit. Based on the signal from the transmitter / receiver 29, the fish amount data of the found fish school and the water depth data of the found position of the fish school are output. The central processing unit 30 includes
The measuring side monitor 32 is connected, and the measuring side monitor 32 is based on the fish amount data and the water depth data.
Information on the amount of fish found and the depth of fish found
For example, the screen is displayed using images and characters. These fish quantity information and water depth information are available in the sub-monitoring room 24
It is also displayed on the sub-monitoring side 33 on the weighing side. Further, a printer 34 is connected to the central processing unit 30, and the printer 34 hard copies the fish amount information and the water depth information displayed by the weighing side monitor 32 and the weighing side sub monitor 33. It has become.

Furthermore, the fish school dynamics monitoring apparatus 10 in this embodiment has a trawl sonar 36, and the trawl sonar 36 is provided between the pair of expansion nets 1 arranged in the trawl net 7. And data relating to the water depth, the net mouth width and the net mouth height of the head rope 8 of the trawl net 7 can be output. The trawl sonar 36 has a catch sensor 37, and the catch sensor 37 is provided between the two expanding nets 1 and the trawl net 7.
The mouth width and the like of the mesh opening 7a are detected by detection waves such as ultrasonic waves, and the detection result is output as an electric signal. The catch sensor 37 may be arranged, for example, near the expanding body 1 or near the trawl 7.

Further, the trawl sonar 36 has a water depth / water temperature sensor 38 for detecting the water depth and the water temperature of the head rope 8. The water depth / water temperature sensor 38 outputs the detection result as an electric signal. It is like this. The water depth / water temperature sensor 38 may be attached to a predetermined position of the towed body for introducing the trawl net 7 into the sea, for example.

The troll sonar 36 is installed in the central monitoring room 1
9 has a control unit 40 for receiving the detection results of the catch sensor 37 and the water depth / water temperature sensor 38 and controlling the drive of each sensor 37, 38. The sensors 37 and 38 are electrically connected via a cable 41.

Further, the control unit 40 is provided with a trawl-side monitor 42. The trawl-side monitor 42 is based on the data output by the sensors 37 and 38, and the expansion net body 1 and the water depth. Alternatively, the water temperature information is displayed on the screen using images and characters.

At a predetermined position of the cable 41, a sonar winch 43 for winding the catch sensor 37 and the water depth / water temperature sensor 38 on the fishing boat 2 via the cable 41 is provided.

Furthermore, the fish school dynamics monitoring apparatus 10 in this embodiment has a trawl winch control device 45, and this trawl winch control device 45 warps the trawl winch 44 for winding the trawl net 7. It is possible to output data relating to the length of 3 and the tension of warp 3.

In addition, the fish school dynamics monitoring apparatus 10 according to the present embodiment has a dynamics monitoring control section 46, and the dynamics monitoring control section 46 includes the above-mentioned devices 11, 27, 36, 45.
Manages, analyzes, and calculates information data of at least the fishing boat 2
Information on the relative position between the discovered fish group centering on the fish and the trawl fishing gear 4 is displayed on the one dynamic monitoring monitor 47.

The dynamic monitoring control section 46 is provided in the central monitoring room 1
9 has a control I / O 49, and this control I / O 49 is used for each of the devices 11, 27, 3 described above.
Data is transmitted / received to / from 6 and 45. A CPU 50 is connected to the control I / O 49, and the CPU 50 is connected to the control I / O 49.
The information data of each of the devices 11, 27, 36, 45 is managed, analyzed, and calculated via / O49.
More specifically, the CPU 50 controls the devices 11,
Based on the information data received from 27, 36, 45,
At least the relationship of the relative positions of the discovered fish school around the fishing boat 2 and the trawl fishing gear 4 is calculated.

The fish school movement monitor 47 is connected to the CPU 50, and the fish movement monitor 4 is connected to the CPU 50.
Reference numeral 7 indicates the relationship of the relative positions calculated by the CPU 50 as character information or image information on one screen. This relative position information is
It is also displayed on the activity monitoring side secondary monitor 51 arranged in the secondary monitoring room 24.

The display on the dynamic monitoring monitor 51 is C
It is possible to switch to a plurality of patterns based on the control of the PU 50, and as a result, it is possible to monitor the dynamics of the school of fish in more various forms. For example,
As shown in FIG. 2, the relative position between the fish school A and the trawl fishing gear 4 around the main ship 2 may be displayed in a plan view, a side view, and a front view. Also, as shown in FIG.
The relative position between the school of fish A and the trawl fishing gear 4 may be displayed only in a plan view, or as shown in FIG. 4, the relative position may be displayed in a side view only, or as shown in FIG. You may make it display only with a figure. Further, as shown in FIG. 6, the relative position between the school of fish A and the trawl fishing gear 4 may be displayed three-dimensionally. Further, as shown in FIG. 7, the relative positions of the fish school A and the fishing gear 4 are displayed in a plan view, a side view, and a front view, and the scale and position of the trawl fishing gear 4 are different from those in FIG. It may be a non-scale display in which is not set.

In addition to the relative positions of the fish school A and the trawl fishing gear 4, for example, as shown in FIG. 2, a menu window 43 for selecting a menu such as a display pattern of a monitor, a fish school A and the trawl fishing gear. You may make it display the setting window 54 for setting the fixed information etc. regarding the trawl fishing gear 4 in order to calculate the relative position with 4, or the data window 55 for displaying various data.

Therefore, while confirming the relative position between the found fish school A and the trawl fishing gear 4 of the fishing boat 2 on one screen with the own ship 2 as the center, the net mouth 7a of the fishing tackle 4 is moved to the position of the discovered fish group A. Since it can be guided, proper and efficient troll operation can be realized.

Further, a GPS 56 is connected to the control I / O 49, and it is possible to confirm information on the current position of the fishing boat 2 itself and the sea area around it by this GPS 56.

Therefore, more stable operation can be performed while preventing accidents such as grounding. The GPS 56 may be provided if necessary.

Next, when carrying out the trawl operation method according to the present invention by applying such a fish school dynamics monitoring apparatus 10, first, the trawl net 7 is put into the sea to prepare for towing.

Then, the scanning sonar 11 described above is used.
The relative net position data indicating the relative position of the trawl gear 4 with respect to the fishing boat 2 and the relative position data indicating the relative position of the fish school with respect to the fishing boat 2 are calculated, and the relative net position data and the relative position data are calculated by the dynamic monitoring controller. Output to 46. Furthermore, the weighing fish finder 27
Then, the marker data of the discovered fish school, the fish amount data, and the water depth data of the discovered position of the fish school are output to the dynamic monitoring and control unit 46. Further, by the catch sensor 37 of the trawl sonar 36, the dynamic monitoring and control unit obtains data regarding the interval between the pair of expanded nets 1 of the trawl fishing gear 4 and data regarding the net mouth width and the net mouth height of the trawl net 7. Output to 46. Further, the water depth / water temperature sensor 38
Accordingly, the detection result of the water depth and the water temperature of the head rope 8 is output to the movement monitoring controller 46.

Further, the troll winch controller 4
5 outputs data regarding the warp length and the warp tension of the trawl winch to the movement monitoring control unit 46.

Then, based on each data output from each of the devices 11, 27, 36, 45 by the movement monitoring control section 46, the found fish school A centering on the own ship 2 and the trawl of the fishing ship 2 are conducted. The relative position relationship with the fishing tackle 4 is calculated, and the calculated relative position relationship is displayed as character information or image information on one screen of the fish school movement monitoring monitor 47.

As a result, the net mouth 7a of the trawl net 7 can be guided to the position of the found fish school A while always checking the relative position between the trawl fishing gear 4 and the fishing boat 2 displayed on the fish school dynamics monitor 47.

In addition, as shown in FIG. 1, when the towing is performed while confirming the current position of the fishing boat 2 itself by the GPS 56, more stable operation can be performed while preventing accidents such as grounding. According to the embodiment, it is possible to perform towing while displaying the relative position of the discovered fish school and the trawl fishing gear 4 of the own ship 2 on the one monitor 47 centering on the own ship 2 during the trawl operation, so that it is appropriate and efficient. Operation can be performed.

The present invention is not limited to the above-mentioned embodiment, but can be variously modified as necessary.

[0051]

As described above, according to the trawling method of the first aspect of the present invention, proper and efficient trawling operation can be performed, which leads to improvement of fishing rate and reduction of operating cost. Can be achieved.

According to the troll operation method of claim 2, in addition to the effect of the troll operation method of claim 1,
Further stable operation can be performed.

According to the fish school dynamics monitoring apparatus of the third aspect, proper and efficient trawl operation can be performed with a simple structure, and by extension, the catch rate can be improved and the operation cost can be reduced. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a fish school dynamics monitoring apparatus according to the present invention.

FIG. 2 is a diagram showing an example of a display mode of a relative position between a fish school and a trawl fishing gear by a fish school dynamic monitoring monitor in the embodiment of the trawl operating method and the fish school dynamic monitoring apparatus used therefor according to the present invention.

FIG. 3 is a diagram different from FIG. 2 showing an example of a display mode of a relative position between a fish school and a trawl fishing gear by a fish school dynamic monitoring monitor in the embodiment of the trawl operating method and the fish school dynamic monitoring apparatus used therefor according to the present invention.

FIG. 4 is a view showing an example of a display mode of a relative position of a fish school and a trawl fishing gear by a fish school dynamic monitor in the embodiment of the trawl operating method and the fish school dynamic monitoring apparatus used therefor according to the present invention. Figure different from

FIG. 5 to FIG. 4 showing an example of a display mode of a relative position between a fish school and a trawl fishing gear by a fish school dynamic monitoring monitor in the embodiment of the trawl operating method and the fish school dynamic monitoring apparatus used therefor according to the present invention. Figure different from

FIG. 6 is a view showing an example of a display mode of a relative position between a fish school and a trawl fishing gear by a fish school dynamic monitoring monitor in an embodiment of a trawl operating method and a fish school dynamic monitoring apparatus used therefor according to the present invention. Figure different from

2 to 6 showing an example of a display mode of a relative position between a fish school and a trawl fishing gear by a fish school dynamic monitoring monitor in the embodiment of the trawl operating method and the fish school dynamic monitoring apparatus used therefor according to the present invention. Figure different from

FIG. 8 is a diagram showing an example of a troll operation method that has been conventionally adopted.

[Explanation of symbols]

1 Expanding body 2 fishing boats 3 Warp 4 Troll fishing gear 7 trawl net 7a mesh mouth 8 head rope 10 Fish movement monitoring device 11 scanning sonar 27 weighing fish finder 36 Troll Sonar 44 Troll winch 45 Troll winch control device 46 Dynamic monitoring control unit 47 Dynamic monitoring monitor 56 GPS

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiromi Kinoshita             2-20 Higashi-Shinagawa 2-chome, Shinagawa-ku, Tokyo Nichi             Within Mow Co., Ltd. F term (reference) 5J083 AA02 AA03 AB01 AC01 AC29                       AC30 AD04 AE04 AE06 AE10                       AF15 AG11 DB02 EA11 EA18

Claims (4)

[Claims] 1. A trawl operating method for catching a discovered fish group in the trawl fishing equipment while towing the trawl fishing equipment thrown into the sea from the fishing boat by the fishing boat, at least a relative position between the discovered fish group and the trawl fishing equipment of the fishing boat. A method for operating a trawl, which comprises guiding the net mouth of the fishing tackle to the position of the discovered fish school while confirming on one screen centering on the own ship. 2. The trawling method according to claim 1, wherein the towing operation is performed while grasping the position of the fishing boat itself. 3. A fish school dynamic monitoring apparatus used in a trawl operation method for catching a discovered fish group in the trawl fishing gear while towing the trawled fishing gear thrown into the sea from the fishing boat by at least the discovered fish group and the fishing boat. The fish movement monitoring device, which can display the relative position with the trawl fishing gear on one screen centering on the own ship. 4. A scanning sonar capable of outputting relative net position data indicating a relative position of a trawl net to a fishing boat and relative position data indicating a relative position of a fish school to the fishing boat, marker data of the fish school, fish amount data and Measuring fish finder capable of outputting water depth data of the location where fish were found, data on the distance between a pair of expanded nets installed on trawl gear, head rope water depth, net mouth width and net mouth of trawl nets. Based on each information data output from each device, a trawl sonar capable of outputting height data and a trawl winch control device capable of outputting data related to the warp length and warp tension of the trawl winch. Information on the relative position of the discovered fish group and the trawl gear of the fishing boat, centered on at least the ship Fish dynamics monitoring device as claimed in claim 3, characterized in that it comprises a dynamic monitoring control unit for displaying on a monitor viewing.