JPH01250876A - Operation assisting device - Google Patents

Abstract

PURPOSE:To move a fishing net to the optimum position and to improve the efficiency of fish catch by displaying the positions of a fish shoal, the fishing net, and a ship body visually. CONSTITUTION:Fish shoal position data FDH is obtained by a scanning sonar 2, the angle of drift in a net towing direction to a bow-stern direction is detected by a drift current meter 4 to obtain net direction data NW, and warp length data WL on the fishing net is obtained by a warp counter 6. Further, ship position data SP is obtained by a loran receiver 8 and bow-stern direction data DS is obtained by a gyrocompass 10; and wind force data WD is obtained by an anemometer and eddy current data CK is obtained by an eddy current meter 14. Then those data are inputted to a CPU 18 on a time-division basis through an input part 16 and the CPU 18 computes the position of the fish shoal, fishing net, and ship body and displays their marks on a CRT 28.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operation support device used for actual operations such as trawl fishing, operation training, and the like.

[Conventional technology]

For example, trawl fishing is a fishing method in which schools of fish discovered by the fishing boat are captured by towing a net behind the fishing boat.
This fishing method includes bottom trawling, in which the fishing net is dragged along the seabed, and off-bottom trawling, in which the fishing net is dragged a short distance from the seabed.

In this type of fishing method, the fishing boat is drifted by external forces such as tidal currents and wind power, and the fishing net is influenced by the tidal current depending on its depth, so the relative positional relationship between the fishing boat and the fishing net in the horizontal and vertical planes changes from moment to moment. This is changing. Additionally, schools of fish move against the current, and their positions change every moment. A fishing net towed by a fishing boat is a tractrix curve, that is, when the ship's heading changes, the trajectory of the boat and the net is different, and the net follows the trajectory by drawing a curve whose asymptote is the trajectory of the boat. .

Such fishing methods must overcome parameters that vary in a complex manner depending on weather conditions and other factors, and require considerable skill in maneuvering boats in order to target and catch schools of fish.

Traditionally, as a device used for operational support,
No. 061 "Fishing net opening degree display device j" is available, but this is a partial display technique that displays the opening cross section of the fishing net, so it is not practical.

[Problem to be solved by the invention] There is no practical operational assistance for fishing methods with such complex parameters, and boat handling experience and personal boat handling skills greatly influence fishing efficiency. Ta.

Therefore, the present invention aims to assist the operation of such fishing methods and improve fishing efficiency.

[Means to solve the problem]

As shown in FIGS. 1 and 2, the operation support device of the present invention has a calculation means (CP) that calculates the positions of the fish school, fishing net, and ship hull from fish school data, fishing net data, and ship hull data.
U18) and video display means (CRT28) for displaying the fish school mark M1, fishing net mark M2 and hull mark M4 based on the calculation results of the calculation means (CPU18),
The absolute positions of the school of fish, the fishing net, and the hull are determined by the calculation means (CPU 1B), and the school of fish mark Ml, the fishing net mark M2, and the hull mark M4 are displayed at the absolute position on the display coordinates of the video display means (CRT 28). be.

Further, as shown in FIGS. 1, 3, and 4, the operation support device of the present invention includes a calculation means (CPU 18) that calculates the positions of the fish school, fishing net, and hull from the fish school data, fishing net data, and ship hull data. and this calculation means (CPU 18
) for displaying the fish school mark MI, fishing net mark M2 and hull mark M4 (CRT2).
8), and the calculation means (CPU 18) calculates the school of fish,
The relative positions of the fishing net and the hull are determined, and the video display means (CR)
The hull mark M4 is displayed at the center of the display coordinates of T28), and the fish school mark M and the fishing net mark M2 are also displayed in a relative positional relationship with the hull mark M4.

[For production]

According to the operation support device of the present invention, the positions of the fish school, the fishing net, and the ship hull are calculated and determined from the fish school data, the fishing net data, and the ship hull data, and each position is displayed on the display coordinates of the video display means (CRT28) with the fish school mark M11. The fishing net mark M2 and the hull mark M4 are displayed, and the positions of the school of fish, the fishing net, and the hull can be known from the video display.

Further, according to the operation assistance device of the present invention, fish school data,
From the fishing net data and the hull data, the relative positions of the school of fish, the fishing net, and the hull are calculated and displayed on a video display means (CRT2).
8) In addition to displaying the hull mark M4 at the center of the display coordinates, the positions of the fish schools and fishing nets that have a relative positional relationship with the hull are displayed as the fish school mark M1 and the fishing net mark M2. You can know the relative positions of schools of fish and fishing nets.

In the operation support device of the present invention, if the external force display M6 is displayed on the video display means (CRT28) based on the external force data acting on the hull or the fishing net, the external force display M
6, fishing net operations can be performed, and fishing accuracy can be improved.

〔Example〕

FIG. 1 shows an embodiment of the operation assistance device of the present invention.

This operation support device uses fish school data such as the position of fish schools,
It takes in fishing net data such as the position of fishing nets, hull data such as the position and direction of the ship, and weather data that acts as external forces such as tidal currents, and displays the information necessary for ship maneuvering from each data.

Therefore, scanning sonar 2. is installed, and the scanning sonar 2 provides fish position data FDH.

Next, a drift meter 4 and a warp counter 6 are installed as means for detecting fishing net data. , and warp length data WL of the fishing net is obtained by the warp counter 6.

Next, a Loran receiver 8 and a gyro compass 10 are installed as means for detecting hull data, and the Loran receiver 8 obtains ship position data SP of the hull, and the gyro compass 10 obtains heading data DS of the hull.

Next, a wind meter 12, a current meter 14, etc. are installed as means for detecting meteorological data including external forces that directly act on the hull and fishing nets.
is obtained, and the tidal current data CK is obtained by the tidal current meter 14.

The various data FDH to CK obtained by each detection means include data that changes from moment to moment and data that is fixedly set (for example, warp length data WL). The central processing unit (CPU) is a calculation means composed of a microcomputer etc.
) 1B.

A keyboard 20 is connected to the CPU 18 to which key manual data KD is applied, and a memory element (ROM) 22 and a memory element (RAM) are used as data storage means.
)24 are linked.

The ROM 22 stores processing programs such as an operation support program, fish school marks MI to be displayed, fishing net marks Mz, warp marks M8, hull marks M4, drift line displays M,
Fixed data such as tidal current mark M6 as an external force display are written, and these programs and data are read out as necessary. Further, since the RAM 24 is a writable and readable storage element, data taken in through the input unit 16, data read from the ROM 22, data in the middle of calculation, etc. are stored in the RAM 24.

The calculation results obtained by the CPU 18 are stored in a display memo 26 installed as a display storage means, and are added as a display output from the display memo 26 to a cathode ray tube display (CRT) 28 as an image display means. It will be done.

The display memo 26 is a memo consisting of a RAM having a memory element in one-to-one correspondence with the pixels of the CRT 28, and image display on the CRT 2B is performed on the premise that image data is temporarily written to and read from the display memo 26. Recording and display control of the display memo 26 and CRT 28 are coordinated by a control unit 30, and image data to be displayed on the CRT 28 is written to the display memo 26, read out, and displayed on the CRT 2B.
Writing and reading data to and from does not require a synchronous relationship.

Therefore, in this operation support device, as shown in FIG.
In addition to displaying the absolute coordinates of the hull mark M4,
A drift line display M is performed.

That is, the ship position data SP for each latitude line and longitude line of the Loran reception m8 is read out from the RAM 24, and the ship's heading data DS of the gyro compass 10 is read out to calculate the ship position. Based on this calculation result, CRT2
The display position relative to the reference point on B is determined, and the hull mark M4 read from the ROM 22 is displayed at the display position.

Next, the warp length data WL of the warp counter 6 is read from the RAM 24, and the warp mark M3 is read from the ROM 22 and displayed behind the hull mark M4.

Next, the net direction data NW of the drift meter 4 is read out from the RAM 24, and the drift line M in the drift angle direction relative to the bow line is displayed, for example, as a broken line.

Next, the distance between the fishing boat and the fish school and the fish school position data FDH from the scanning sonar 2 are read out from the RAM 24, and the fish school mark M+ is read out from the ROM 22, and after matching the distance scale on the screen, the corresponding position with the hull mark M4 is read out. Find and display.

Next, the tidal current data CK is read from the RAM 24, and the tidal current mark M6 is displayed. In this case, the length of the current mark M6 represents the speed of the current.

As is clear from such a display, if we calculate the resultant force of the external force F such as the tidal current and the propulsive force S of the ship with the ship's waypoint O as the center, this will be the drifting direction of the ship, and Mo will be the direction of the fishing net. This is a tractrix curve that represents.

Therefore, the boat operator changes the course so that the drift line display M matches the target fish school, and also controls the boat speed. Troll motion display is performed by repeating such a ship maneuvering flow. In addition, when maneuvering the ship, data WD and CK from the wind meter 12 and tidal current meter 14 are taken in at any time.
It is desirable to write it into the RAM 24, display it, and refer to it.

Next, this operation support device displays a ship mark M4 at the center of the coordinate scale SL displayed on the screen of the CRT 28 as another display, as shown in FIG. The relative coordinates of the fish school mark M and the fishing net mark M2 are displayed. In this case, to simplify the explanation, it will be assumed that the current near the depth of the fishing net is zero and the school of fish is immobile.

Now, assuming that a school of fish has been detected in a 30 degree direction, a school of fish mark M is displayed using the fish position data FDF from the scanning sonar 2.

The hull mark M4 is read from the ROM 22, and the hull mark M is displayed at the center of the screen of the CRT 2B with reference to the heading data DS (30 degrees in this case) of the gyro compass 10. By the way, the 360 degree scale of the coordinate scale SL is set in a fixed state.

Network orientation data NW and warp length data WL from RAM24
At the same time, the warp mark M3 is read from the ROM22.
and the fishing net mark M2 are read out, and the warp mark M and the fishing net mark M2 are simultaneously displayed on the rear of the hull mark M4 based on each data.

In addition, the CPU 18 calculates the drift direction from the ship's heading data DS from the RAM 24 and external force data such as tidal current data CK and wind force data WD, and displays the drift line M on the CRT 2B.
, display.

As is clear from these displays, if the boat is not subjected to external forces F such as wind or currents, it is possible to catch a school of fish without changing the course of the boat, but in reality, external forces F such as tides are This has a big impact on catching.

Now, assuming that an external force F such as wind or current is acting,
The hull will be flown in the direction H of the resultant force of the propulsive force S and the external force F, and this is the drift direction. In Figure 3, the boat drifts in a 60-degree direction while keeping its heading at 30 degrees.As a result, the fishing net behind it also deviates from the 30-degree direction, as shown by the broken line in Figure 3, allowing it to catch schools of fish. Can not do it.

In this case, in order to set the drift line display M in the 30 degree direction,
The ship's heading must be changed to 0 degrees.

Therefore, the boat operator changes the course of the boat so that the drift line display M matches the direction of the target school of fish, and in the case of FIG. 3, changes the course to 0 degrees, and adjusts the boat speed. As a result, the ship's heading data DS is changed as shown in FIG.
It will be displayed facing the direction. Then, the fishing net moves in a 30 degree direction and can capture a school of fish.

In the example, actual operations on a fishing boat have been explained, but training for actual operations can be carried out by providing various data provided from a detection means such as a gyro compass 10 from a pseudo signal generator made of a separate microcomputer or the like. Can be used. In that case, the instructor gives the boat position, fish school position, tidal current, wind direction, and wind speed, and the student controls the boat maneuvering position using the helm, and inputs hull data such as the boat position and boat speed into the input section 16 using a potentiometer operated by the helm. By giving this information, it is possible to follow the assumed fish school mark M1 and maneuver the ship accordingly. Various data are
Data from the actual sea area can be recorded and read out in real time for use in ship maneuvering training.

[Effects of the Invention] As explained above, according to the present invention, by displaying the absolute coordinate positions or relative positions of the school of fish, the fishing net, and the hull, the positional relationship between the school of fish, the fishing net, and the hull can be visually grasped and the fishing net It is possible to capture schools of fish by moving them to the optimal position, which can improve fishing efficiency in actual operations.Furthermore, if each data is displayed in the same way using a pseudo image, it will be possible to capture schools of fish even in actual operations. Ship handling training can be conducted.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the operation support device of the present invention, and FIGS. 2, 3, and 4 are diagrams showing displays on a video display. 18...CPU (computation means) 28...CRT (image display means) M,...fish school mark M2...fishing net mark M4...hull mark

Claims (3)

[Claims] (1) Comprising calculation means for calculating the positions of fish schools, fishing nets, and hulls from fish school data, fishing net data, and ship hull data, and video display means for displaying fish school marks, fishing net marks, and ship hull marks based on the calculation results of this calculation means. . An operation support device, characterized in that the calculation means calculates the absolute positions of the school of fish, the fishing net, and the hull, and displays the school of fish mark, the fishing net mark, and the hull mark at the absolute position on the display coordinates of the image display means. (2) Comprising calculation means for calculating the positions of fish schools, fishing nets, and hulls from fish school data, fishing net data, and ship hull data, and video display means for displaying fish school marks, fishing net marks, and ship hull marks based on the calculation results of this calculation means. , the calculation means calculates the relative positions of the school of fish, the fishing net, and the ship's hull, displays the ship mark at the center of the display coordinates of the video display means, and displays the school of fish mark and the fishing net mark in a relative positional relationship with the ship mark. Characteristic operational support equipment. (3) Claim 1 or 2, wherein the image display means displays an external force based on external force data acting on the hull or the fishing net.
Operational aids as described.