JP2005046034A - Auto trawl system - Google Patents

Auto trawl system Download PDF

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Publication number
JP2005046034A
JP2005046034A JP2003204929A JP2003204929A JP2005046034A JP 2005046034 A JP2005046034 A JP 2005046034A JP 2003204929 A JP2003204929 A JP 2003204929A JP 2003204929 A JP2003204929 A JP 2003204929A JP 2005046034 A JP2005046034 A JP 2005046034A
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JP
Japan
Prior art keywords
trawl
fishing
fish
relative
fishing gear
Prior art date
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Granted
Application number
JP2003204929A
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Japanese (ja)
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JP3840467B2 (en
Inventor
Hiromi Kinoshita
Takenori Kowa
Kenichi Koyama
Hiroshi Onishi
武典 古和
廣 大西
謙一 小山
弘実 木下
Original Assignee
Nichimo Co Ltd
ニチモウ株式会社
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Priority to JP2003204929A priority Critical patent/JP3840467B2/en
Publication of JP2005046034A publication Critical patent/JP2005046034A/en
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Abstract

[PROBLEMS] To tow a vessel while displaying the relative position between a fish school and the trawl fishing gear of the own ship on a single monitor centering on the own ship, and using the various information to the target position. To provide an auto-troll system that can operate properly and efficiently by sailing.
Information on the relative position of a discovered fish school A, a fishing boat 2 and a trawl fishing gear 4 and information related to the trawl operation are obtained and displayed on a single screen, and information obtained from the fishing gear dynamic monitoring means 10 is obtained. In response to this, the operation state of the fishing boat 2 is controlled to place the trawl fishing gear 4 in an appropriate position for catching a fish school to be caught, and the operation state of the fishing boat 2 by the automatic fixed point holding means 60 It has auto-trawl winch means 70 for controlling the lifting of the trawl fishing gear 4 in conjunction with the control.
[Selection] Figure 1

Description

[0001]
[Industrial application fields]
The present invention relates to an auto-troll system, and more particularly to an auto-troll system suitable for catching a found fish school in a trawl net of the trawl fishing gear while towing the trawl fishing gear thrown into the sea from a fishing boat.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, as one of the fishing methods for catching fish in the sea, a bag-shaped net with an opening called a trawl net (bottom net) has been introduced into the sea, and this net is the front side of the net. A trawl fishing method has been adopted in which a fishing vessel is towed into a trawl net through the opening by towing with a fishing boat.
[0003]
Further, conventionally, in such a trawl fishing method, a so-called otter board is sometimes used from the viewpoint of efficiently expanding the trawl net and catching efficiently.
[0004]
In such a trawl operation, it is necessary to properly grasp the position of the trawl gear, the discovery position of the fish school to be caught, and move the trawl net mouth to the position of the fish school. It is said.
[0005]
In order to grasp the position of the school of fish, the position of the trawl, etc., a detector called a so-called fish finder is known. However, the information on these school of fish is gathered in one place for proper and efficient operation. There is still no clear disclosure about the fishing methods used.
[0006]
Therefore, the present applicant performs proper and efficient operation by towing while displaying the relative position of the found fish school and the trawl gear of his ship on one monitor centering on his ship at the time of the trawl operation. A trawl operation method that can be used and a fishing gear dynamic monitoring means used therefor have been proposed (see Patent Document 1).
[0007]
[Patent Document 1]
JP 2003-185746 A
The present invention uses the fishing gear dynamic monitoring means in Patent Document 1 and has the function of the fishing gear dynamic monitoring means. Furthermore, the fishing boat can be automatically navigated to the target position by using various information, An object of the present invention is to provide an auto-troll system that can further improve the efficiency.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, an auto trawl system according to claim 1 of the present invention is an auto that performs a trawl operation for catching a found fish school in the trawl fishing gear while towing the trawl fishing gear thrown into the sea from a fishing boat by the fishing boat. A trawl system that obtains information related to the relative position of the found fish school, fishing boat and trawl gear and trawl operation, and displays it on a single screen, and corresponds to information obtained from the fish gear motion monitor And an automatic fixed point holding means for controlling the operation state of the fishing boat and placing the trawl fishing gear at an appropriate position for catching the fish school to be caught, and the trawl in conjunction with the operation state control of the fishing boat by the automatic fixed point holding means. And an auto-trawl winch means for controlling the lifting of fishing gear.
[0010]
By adopting such a method, information indicating the relative positions of the discovered fish school, trawling gear and the fishing boat itself can be aggregated on one screen. Since the trawl gear can be automatically towed toward the discovered fish school, trawl operation can be performed appropriately, stably and with high fishing efficiency.
[0011]
The auto-troll system according to claim 2 is the auto-troll system according to claim 1, wherein the fishing gear dynamic monitoring means can display at least a relative position between the discovered fish school and the trawling gear of the fishing boat on one screen with the own boat as a center. It is said that it is said.
[0012]
And by employ | adopting such a structure, since it can tow while ensuring the safety of fishing boat itself, more stable operation can be performed.
[0013]
The automatic trawl system according to claim 3 is a scanning sonar capable of outputting relative net position data indicating a relative position of a trawl net with respect to a fishing boat and relative position data indicating a relative position of a school of fish with respect to the fishing boat as fishing gear movement monitoring means. A measuring fish finder capable of outputting fish marker data, fish quantity data, and water depth data at the fish discovery location, data on the distance between a pair of reticules arranged in a trawl gear, and a trawl A trawl sonar capable of outputting data on the head rope water depth, net width and net height, and a trawl winch control device capable of outputting data on the warp length and warp tension of the trawl winch, Based on each information data output from each device, at least And 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.
[0014]
And by employ | adopting such a structure, the relative position of a school of fish and a trawl fishing gear can be detected still more simply and appropriately.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of an auto-troll system according to the present invention will be described with reference to FIGS. 1 to 7.
[0016]
FIG. 1 shows an embodiment of an autotrol system according to the present invention.
[0017]
This auto-trolling system has a fishing gear dynamic monitoring means 10, an automatic fixed point holding means 60, and an auto-trawl winch means 70.
[0018]
The fishing gear dynamic monitoring means 10 is formed for obtaining information related to the relative positions of the found fish school, the fishing boat 2 and the trawl fishing gear 4 (both see FIG. 7) and the trawl operation and displaying them on one screen. The automatic fixed point holding means 60 is formed so as to control the operation state of the fishing boat 2 corresponding to the information obtained from the fishing gear dynamic monitoring means 10 and to arrange the trawl fishing gear 4 at an appropriate position for catching the fish group to be caught. Yes. The auto-trawl winch means 70 is formed so as to control the lifting of the trawl fishing gear 4 in conjunction with the operation state control of the fishing boat 2 by the automatic fixed point holding means 60.
[0019]
More specifically, the fishing gear dynamic monitoring means 10 outputs relative net position data indicating the relative position of the trawl fishing gear 4 with respect to the fishing boat 2 and relative position data indicating the relative position of the found fish school A (see FIG. 2) with respect to the fishing boat 2. It has a scanning sonar 11 enabled.
[0020]
The scanning sonar 11 has a net position detecting transbonder 13. The net position detecting transbonder 13 is configured to transmit a detection wave such as an ultrasonic wave that informs the position of the trawl fishing gear 4 to the fishing boat 2 side. For example, the trawl which is one of the components of the trawl fishing gear 4 You may make it arrange | position in the vicinity of the net | network 7 (refer FIG. 7).
[0021]
The scanning sonar 11 has an elevating device 14 on the bottom side of the fishing boat 2, and this elevating device 14 transmits and receives detection waves such as ultrasonic waves to and from the net position detecting transbonder 13. A scanning transducer 15 is provided.
[0022]
Therefore, since the detection wave transmitted from the net position detection transbonder 13 can be received via the lifting device 14, the position of the trawl fishing gear 4 can be detected.
[0023]
The scanning transducer 15 is equivalent to an all-round sonar, and receives a detection wave such as an ultrasonic wave transmitted and reflected in the horizontal direction with respect to the school of fish.
[0024]
The elevating device 14 includes a receiver 17 for receiving the detection wave from the net position detecting transbonder 13 received by the elevating device 14 and the detection wave from the discovered fish school A by converting them into electrical signals, and this A transmitter 18 for transmitting a signal received by the receiver 17 is connected.
[0025]
Further, the scanning sonar 11 has a computing unit 20 in the central monitoring room 19 of the fishing boat 2, and this computing unit 20 receives the signal of the ship position detection transbonder 13 transmitted from the transmitter 18. At the same time, the relative position of the trawl fishing gear 4 with respect to the fishing boat 2 is calculated based on this signal. Then, the calculator 20 outputs the calculation result as relative network position data. Furthermore, the calculator 20 receives the signal from the found fish school A transmitted from the transmitter 18 and computes the relative position of the found fish school A with respect to the fishing boat 2 based on this signal. The calculator 20 outputs the calculation result as relative position data.
[0026]
Further, a scanning side monitor 21 is connected to the computing unit 20, and the scanning side monitor 21 inputs the relative net position data and the relative position data output by the computing unit 20, and the trawl fishing net based on this data. The information on the relative position of No. 4 and the relative position of the found fish school A is displayed on the screen using, for example, images and characters. Further, an operation remote controller 22 for operating the calculator 20 is connected to the calculator 20. Information on the relative position of the trawl fishing gear 4 and information on the relative position of the found fish school A are also displayed on the scanning side sub monitor 25 disposed in the sub monitoring room 24.
[0027]
The fishing gear dynamic monitoring means 10 according to the present embodiment can output marker data of the discovered fish school A, fish quantity data for detecting the amount of fish based on the density distribution, and water depth data at the discovery position of the discovered fish school A. A measuring fish finder 27 is provided.
[0028]
This measuring fish finder 27 has a fish quantity detection transducer 28 on the bottom side of the ship, and this fish quantity detection transducer 28 transmits ultrasonic waves reflected by the fish school and reflected. Etc. are received. The measuring fish finder 27 has a water depth detection transducer 29 on the bottom side of the ship. This water depth detecting transducer 29 is equivalent to a vertical sonar, and is adapted to receive a detection wave such as an ultrasonic wave reflected and transmitted in the vertical direction with respect to the found fish group A.
[0029]
Both detection waves received by the fish volume detection transducer 28 and the water depth detection transducer 29 are converted into electrical signals.
[0030]
The measuring fish finder 27 has a central processing unit 30 in the central monitoring room 19. The central processing unit 30 outputs the fish volume data of the discovered fish school A and the water depth data of the found position of the fish school based on the signals of the transducer 28 for detecting the fish quantity and the transducer 29 for detecting the water depth. Yes. The central processing unit 30 is connected to a weighing side monitor 32. The weighing side monitor 32 obtains the fish volume information of the discovered fish school A and the water depth information of the fish school finding position based on the fish volume data and the water depth data. For example, the image is displayed on the screen using characters and characters. These fish quantity information and water depth information are also displayed on the weighing side sub monitor 33 disposed in the sub monitoring room 24. Further, a printer 34 is connected to the central processing unit 30. The printer 34 hard copies the fish quantity information and the water depth information displayed by the weighing side monitor 32 and the weighing side sub monitor 33. Yes.
[0031]
Further, the fishing gear dynamic monitoring means 10 in the present embodiment has a troll sonar 36. The trawl sonar 36 includes data relating to the distance between the pair of expanded nets 1 disposed in the trawl net 7 and data relating to the water depth, net width and net height of the head rope 8 of the trawl net 7. Output is possible. The troll sonar 36 has a catch sensor 37. The catch sensor 37 detects the distance between the two nets 1, the width of the net mouth of the trawl net 7, the catch amount of the cod net portion by a detection wave such as an ultrasonic wave and outputs the detection result as an electric signal It is supposed to be. For example, the catch sensor 37 may be disposed in the vicinity of the trawl net 7. Further, a netsonde (not shown) may be attached.
[0032]
Further, the troll sonar 36 has a water depth / water temperature sensor 38 for detecting the water depth and water temperature of the head rope 8, and the water depth / water temperature sensor 38 outputs the detection result as an electric signal. Yes. The water depth / temperature sensor 38 may be attached to a predetermined position of a towing body for introducing the trawl net 7 into the sea, for example.
[0033]
Further, the troll sonar 36 has a control unit 40 in the central monitoring room 19 for receiving the detection results of the catch sensor 37 and the water depth / water temperature sensor 38 and controlling the driving of the sensors 37 and 38. The control unit 40 and the sensors 37 and 38 are electrically connected via a cable 41.
[0034]
Further, a troll monitor 42 is provided in the control unit 40. The troll monitor 42 displays information on the network 1 and water depth or water temperature based on the data output from the sensors 37 and 38, images, and the like. The characters are displayed on the screen.
[0035]
A sonar winch 43 for winding the catch sensor 37 and the water depth / water temperature sensor 38 onto the fishing boat 2 via the cable 41 is disposed at a predetermined position of the cable 41.
[0036]
Furthermore, the fishing gear dynamic monitoring means 10 in this embodiment has a trawl winch control device 45. The trawl winch control device 45 can output data relating to the length of the warp 3 of the trawl winch 44 and the tension of the warp 3 for winding the trawl net 7.
[0037]
Moreover, the fishing gear dynamic monitoring means 10 in this embodiment has a dynamic monitoring control unit 46. The dynamic monitoring control unit 46 manages, analyzes, and calculates information data of each of the devices 11, 27, 36, 45, and information on the relative position between the discovered fish group A centering on the fishing boat 2 and the trawl fishing gear 4. Is displayed on one dynamic monitoring monitor 47.
[0038]
The dynamic monitoring control unit 46 has a control I / O 49 in the central monitoring room 19, and the control I / O 49 transmits and receives data to and from the devices 11, 27, 36, and 45. Is supposed to do. A CPU 50 is connected to the control I / O 49. The CPU 50 manages, analyzes, and calculates information data of each of the devices 11, 27, 36, and 45 via the control I / O 49. More specifically, the CPU 50 determines the relationship between the relative positions of the discovered fish school A and the trawl fishing gear 4 centered on at least the fishing boat 2 based on the information data received from the devices 11, 27, 36, 45. It comes to calculate.
[0039]
Further, a fish dynamics monitoring monitor 47 is connected to the CPU 50, and the fish dynamics monitoring monitor 47 displays the relation of the relative positions calculated by the CPU 50 as character information or image information on one screen. It has become. The relative position information is also displayed on the dynamic monitoring side sub monitor 51 disposed in the sub monitoring room 24.
[0040]
Moreover, the display of the movement monitoring monitor 47 can be switched to a plurality of patterns based on the control of the CPU 50. As a result, the movement monitoring of the fish school can be performed in more various forms. For example, as shown in FIG. 2, the relative positions of the discovered fish school A and the trawl fishing gear 4 around the fishing boat 2 that is the main vessel may be displayed in a plan view, a side view, and a front view. Further, as shown in FIG. 3, the relative position between the discovered fish school A and the trawl fishing gear 4 may be displayed only in a plan view, and as shown in FIG. 4, the relative position is displayed only in a side view. Alternatively, only the front view may be displayed as shown in FIG. Furthermore, as shown in FIG. 6, the relative position between the discovered fish school A and the trawl fishing gear 4 may be displayed in three dimensions. Further, as shown in FIG. 7, the relative position of the discovered fish school A and the fishing gear 4 is displayed in a plan view, a side view, and a front view, and different from FIG. 2 in order to make it easy to grasp the scale and position of the trawl fishing gear 4. It is good also as a non-scale conceptual display in which the scale is not set.
[0041]
In addition to the relative positions of the discovered fish group 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 the monitor, the discovered fish school A and the trawl fishing gear 4 A setting window 54 for setting fixed information and the like related to the trawl fishing gear 4 or a data window 55 for displaying various data may be displayed on the screen.
[0042]
Therefore, since the net position of the fishing gear 4 can be guided to the position of the discovered fish school A while checking the relative position of the discovered fish school A and the trawl fishing equipment 4 of the fishing boat 2 on one screen with the ship 2 as the center, Appropriate and efficient trawl operation can be realized.
[0043]
Further, a control unit 61 of the automatic fixed point holding means 60 and a control unit 71 of the auto trawl winch means 70 are connected to the control I / O 49.
[0044]
In the automatic fixed point holding means 60, the detected fish school A and the trawl fishing equipment 4 centered on the fishing boat 2 obtained from the current position of the fishing boat 2 itself and further from the fishing gear dynamic monitoring means 10 side by the control unit 61 having a CPU and the like. Based on the relative position relationship, information on the surrounding sea area including the own ship 2, the discovered fish school A, and the trawl fishing gear 4 can be confirmed. Further, the control unit 61 calculates the propulsion speed and steering direction of the fishing boat 2 so that the trawl fishing gear 4 navigates to an appropriate position for catching the discovered fish school A, and propulsion information 63 is formed by an engine or the like. It is sent to the propulsion engine section, and the steering information 64 is sent to the wheelhouse so that the fixed point operation is automatically executed. As a result, the trawl net 7 sails toward the discovered fish school A. As this automatic fixed point holding means 60, a known configuration may be used.
[0045]
Further, in the automatic trawl winch means 70, the control unit 71 having a CPU or the like controls the rotation control command units 72 and 73 for the pair of left and right trawl winches 44, respectively, and the warp 3 is fed and unwound to perform the trawl fishing gear. 4 is raised. Specifically, when the trawl fishing gear 4 is thrown into the net, an automatic throwing net command is issued, the trawl fishing gear 4 and the warp 3 are sequentially introduced from the fishing boat 2 into the sea, and the trawl winch 44 is fed out and rotated until the warp 3 is drawn out for a predetermined length. . Subsequently, an automatic lifting net command for winding up the warp 3 to the standby mark is issued, and the trawl winch 3 is wound up to the standby mark and rotated to wind up the trawl fishing gear 4 to the catch start standby position. Further, based on the data regarding the length of the warp 3 and the tension of the warp 3 obtained from the trawl winch control device 45, the occurrence of the imbalance of the trawl fishing gear 4 in the swirling trawl or the rapid tidal trawl In order to keep the trawl fishing gear 4 in a normal state, the forward / reverse rotation of each trawl winch 44 is adjusted so that the tensions of both warps 3 are equal.
[0046]
Next, a troll operation method using the auto-troll system of this embodiment will be described.
[0047]
First, when arriving at the target fishing area, the automatic trawl winch means 70 is used to perform automatic throwing nets and automatic lifting nets, and the trawl fishing gear 4 and the warp 3 are put into the sea in order and rolled up to the standby mark. Prepare for towing of 4.
[0048]
Then, the above-described scanning sonar 11 calculates relative net position data indicating the relative position of the trawl fishing gear 4 with respect to the fishing boat 2 and relative position data indicating the relative position of the found fish group A with respect to the fishing boat 2, and the relative net position data and Relative position data is output to the dynamic monitoring control unit 46. Further, the measurement fish finder 27 outputs marker data of the discovered fish school A, fish quantity data, and water depth data of the discovery position of the fish school to the dynamic monitoring control unit 46. Furthermore, the catch sensor 37 of the trawl sonar 36 sends the data relating to the distance between the pair of nets 1 of the trawl fishing gear 4 and the data relating to the net opening width and net opening height of the trawl net 7 to the dynamic monitoring control unit 46. Output. The water depth / water temperature sensor 38 outputs the detection result of the water depth and water temperature of the head rope 8 to the dynamic monitoring control unit 46.
[0049]
Further, the trawl winch control device 45 outputs data relating to the warp length and warp tension of the trawl winch to the dynamic monitoring controller 46 and the control unit 71 of the auto trawl winch means 70.
[0050]
Then, based on the data output from the devices 11, 27, 36, 45 by the dynamic monitoring control unit 46, the relative position between the discovered fish school A centering on the own ship 2 and the trawl fishing gear 4 of the fishing ship 2. And the calculated relative position relationship is displayed as character information or image information on one screen of the fish dynamic monitoring 47 (see FIGS. 2 to 7).
[0051]
Further, the automatic fixed point holding means 60 uses the position information from the GPS 62 to grasp the absolute positions of the fishing boat 2 and the discovered fish school A, and the relative position between the trawl fishing gear 4 and the fishing ship 2 displayed on the fish dynamic monitoring monitor 47. While always confirming, the propulsion information 63 and the steering information 64 are transmitted so as to advance the fishing boat 2 so that the net mouth of the trawl net 7 is surely guided to the position of the found fish group A by the automatic fixed point holding function. 7 can be directed to discovered fish school A. Since the tow is performed while confirming the current location of the fishing boat 2 by the GPS 62, more stable operation can be performed while preventing accidents such as grounding.
[0052]
When the fishing boat 2 passes over the discovered fish group A, the measuring fish detector 27 uses a vertical sonar to confirm that the fish species of the discovered fish group A is the same as the target fish species to be caught. The quantity data and the water depth data of the fish school are sent to the dynamic monitoring control unit 46. Following this, it is confirmed that the water depth of the trawl net 7 being towed, the width and height of the opening are appropriate for catching the discovered fish school A.
[0053]
Thereafter, the fishing boat 2 is further advanced according to the automatic fixed point holding function of the automatic fixed point holding means 60, and the trawl net 7 is towed while being adjusted so that the tensions of both warps 3 are equalized by the automatic trawl winch means 70. Do. During catch, catch data is obtained by the catch sensor 37 of the troll sonar 36 and displayed on the monitor 47.
[0054]
Then, the trawl operation is performed while adjusting the traveling direction of the fishing boat 2 until the catch reaches the appropriate catch by the trawl net 7.
[0055]
Therefore, according to the present embodiment, the relative position between the discovered fish school A and the trawl fishing gear 4 of the own ship 2 is displayed on the one monitor 47 centering on the own ship 2 during the trawl operation, and according to the automatic fixed point holding function. Since automatic towing can be performed along the optimum route, proper and efficient operation can be performed.
[0056]
In addition, this invention is not limited to the thing of the said embodiment, A various change is possible as needed.
[0057]
【The invention's effect】
As described above, since the auto-troll system of the present invention is configured and operates, the fishing gear dynamic monitoring means in Patent Document 1 is used, and the fishing gear dynamic monitoring means has an operation, and further according to an automatic fixed point holding function. The fishing boat can be surely automatically navigated to the target position using various information, and the fishing efficiency can be further improved.
[0058]
Specifically, information indicating the relative positions of the discovered fish school, trawl fishing gear and fishing boat itself can be aggregated on a single screen, and while looking at this screen, the automatic fixed point holding function can be used to reliably traverse the discovered fish school. Since the fishing gear can be towed automatically, trawl operation with high fishing efficiency can be performed appropriately and stably.
[0059]
Moreover, since towing can be performed while ensuring the safety of the fishing boat itself, more stable operation can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an auto-troll system according to the present invention. FIG. 2 is a display mode of a relative position between a school of fish and a troll fishing gear by a fish dynamics monitoring monitor in the embodiment of the auto-troll system 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 school of fish and a trawl fishing gear in the embodiment of the auto trawl system according to the present invention. 4 is a diagram different from FIG. 2 and FIG. 3 showing an example of the display mode of the relative position between the fish school and the trawl fishing gear in the embodiment of the auto trawl system according to the present invention. In an embodiment of such an auto-troll system, an example of a display mode of a relative position of a school of fish and a troll fishing gear is shown by a fish dynamic monitoring FIG. 6 is a diagram different from FIG. 2 to FIG. 4. FIG. 6 is a diagram showing an example of a display mode of a relative position between a fish school and a trawl fishing tool by a fish dynamics monitoring monitor in the embodiment of the auto trawl system according to the present invention. FIG. 7 is a diagram different from FIG. 2 to FIG. 6 showing an example of a display mode of the relative position between the fish school and the trawl fishing gear in the embodiment of the auto trawl system according to the present invention. Explanation of]
2 Fishing boat 3 Warp 4 Trawl fishing gear 7 Trawl net 10 Fishing gear dynamic monitoring means 11 Scanning sonar 27 Weighing fish detector 36 Troll sonar 44 Troll winch 45 Troll winch control device 46 Dynamic monitoring control unit 47 Dynamic monitoring monitor 60 Auto trawl system 62 GPS
70 Auto-troll winch means

Claims (3)

  1. An auto-troll system that performs a troll operation to catch a found fish school in the troll fishing gear while towing the traw fishing gear thrown into the sea from a fishing boat,
    Fishing gear dynamics monitoring means for obtaining information related to the relative position of the found fish school, fishing boat and trawl fishing gear and trawl operation and displaying the information on one screen;
    Automatic fixed point holding means for controlling the operation state of the fishing boat corresponding to the information obtained from the fishing gear dynamic monitoring means and arranging the trawl fishing gear at an appropriate position for catching a fish group to be caught;
    An auto-trawl system comprising auto-trawl winch means for controlling the lifting of the trawl fishing gear in conjunction with the operation state control of the fishing boat by the automatic fixed point holding means.
  2. 2. The auto according to claim 1, wherein the fishing gear dynamic monitoring means can display at least a relative position between the discovered fish school and the trawl fishing gear of the fishing boat on a single screen centering on the own boat. Troll system.
  3. The fishing gear movement monitoring means
    A scanning sonar capable of outputting relative net position data indicating the relative position of the trawl relative to the fishing boat and relative position data indicating the relative position of the school of fish relative to the fishing boat;
    Weighing fish finder capable of outputting fish marker data, fish volume data, and water depth data at the fish discovery location;
    A trawl sonar capable of outputting data relating to the distance between a pair of nets disposed in the trawling gear and data relating to the head rope water depth, net width and net height of the trawl,
    A trawl winch control device capable of outputting data relating to the warp length and warp tension of the trawl winch,
    A dynamic monitoring control unit for displaying, on a single dynamic monitoring monitor, information on the relative positions of at least the discovered fish school centered on the own ship and the trawl fishing gear of the fishing boat based on each information data output from each device; The autotroll system according to claim 1, wherein the autotrol system is provided.
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EP2910120A1 (en) * 2014-02-25 2015-08-26 Simrad Spain, S.L. Method and system for controlling the fishing effort of a craft in a trawling fleet
US9119383B2 (en) 2009-02-03 2015-09-01 Henning Skjold-Larsen Method for determining difference in distance
CN104967833A (en) * 2015-07-25 2015-10-07 朱秀娈 Fishing method based on data communication
CN105004357A (en) * 2015-07-14 2015-10-28 中国船舶重工集团公司第七一〇研究所 Catch sensor for trawler
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CN110371279A (en) * 2019-06-03 2019-10-25 中国水产科学研究院南海水产研究所 A kind of fishing ground trapping information collecting device
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