KR20230025187A - Method for implementing navigation guideline algorithm of ship and system of the same and computer-readable recording medium including the same - Google Patents

Abstract

Disclosed in the present invention are a method for implementing a safety navigation guideline algorithm of a ship, a system thereof and a computer-readable recording medium in which a computer program is recorded to execute the method thereof in a computer, which may comprise: a step (S110) of constructing a first DB (110) in advance by means of calculation with respect to the wave condition for each loading condition before the guidance of a ship; a step (S120) of checking the corresponding loading condition according to actual navigation and generating a second DB (120) for each wave condition with respect to the corresponding loading condition; a step (S130) of checking the expected wave condition during actual navigation; and a step (S140) of providing navigation guideline data corresponding to the confirmed wave condition by means of an interpolation algorithm in the actual navigation loading condition in real time. Therefore, the navigation guideline data under the actual condition may be provided by means of the interpolation algorithm by utilizing the calculated condition. Consequently, more realistic navigation guideline data may be provided in real time.

Description

A method for implementing a ship's safety navigation guideline algorithm and its system, a computer readable recording medium on which a computer program for executing the method is recorded on a computer MEDIUM INCLUDING THE SAME}

The present invention utilizes calculated conditions to provide navigation guidance data in real conditions through an interpolation algorithm to provide more realistic navigation guidance data reflecting actual loading conditions and changes in sea conditions in real time, safe navigation guidance for ships. It relates to a method and system for implementing an algorithm, and a computer readable recording medium on which a computer program for executing the method on a computer is recorded.

Normally, operating guidelines are calculated under specific operating conditions and environmental conditions for shipowners to use. However, operating and environmental conditions considered through calculation are different from actual operating conditions, so operating guideline data that can satisfy actual operating conditions. need to provide

In addition, rollover is an important design factor in ships. Excessive rollover increases the acceleration in the width direction of the hull, which limits not only the safety of the crew but also the use of various equipment, resulting in the operability of the ship can reduce

On the other hand, in this regard, there is disclosed a prior art for arranging containers in consideration of roll rolling. Setting the operating speed, environmental analysis information according to the operating route, and the standard roll value and standard acceleration value (S11), and the success condition and failure condition having the roll value and acceleration value calculated for each set operating draft and speed The step of creating a table (S13), the step of selecting the operating draft and operating speed of the ship based on the weight information of the container to be loaded on the ship (S15), and the operation selected from among the generated success and failure condition tables It is intended to reduce rollover by including a step of extracting success conditions and failure conditions most similar to the draft and operating speed (S17), and a step of determining an optimal container arrangement that satisfies the extracted success conditions (S19).

However, by checking only whether the operating draft and operating speed can be applied according to the weight information of the container, it is not possible to provide operating guidance data in the predicted sea state and informs or avoids the risk area exceeding the roll limit. There is a limitation that it cannot provide.

Therefore, a technology capable of providing more realistic navigation guidance data reflecting actual loading conditions and changes in sea conditions in real time by providing navigation guidance data in real conditions through an interpolation algorithm using calculated conditions is required.

Korean Patent Publication No. 10-2018-0021450 (Container arrangement system and method considering rollover, 2018.03.05) Korean Patent Registration No. 10-1549236 (hull strength monitoring system, 2015.09.03) Korean Patent Registration No. 10-1399937 (Rolling damping tank control device and method, 2014.05.28)

The technical problem to be achieved by the spirit of the present invention is to provide navigation guidance data in real conditions through an interpolation algorithm using calculated conditions to provide more realistic navigation guidance data reflecting actual loading conditions and changes in sea conditions in real time. It is to provide a method and system for implementing a safe navigation guideline algorithm of a ship, and a computer readable recording medium on which a computer program for executing the method in a computer is recorded.

In order to achieve the above object, one embodiment of the present invention, prior to delivery of the ship, building a first DB for the wave conditions for each loading condition in advance by calculation; Checking the loading condition according to the actual operation, and generating a second DB for each wave condition for the loading condition; Checking expected wave conditions during the actual operation; and providing navigation guidance data corresponding to the confirmed wave condition in real time through an interpolation algorithm in the loading condition of the actual operation;

In addition, the first DB may be constructed by calculating roll angles according to ship speed and wave direction for each wave condition of various combinations of significant wave height and average wave period for a specific draft and loading condition of GM.

In addition, the loading condition may be directly input from a user or provided from a loading computer.

In addition, the wave condition may be directly input from a user or provided from a real-time wave measurement and prediction system.

In addition, the navigation guide data may display the roll angle according to the ship speed and wave direction for each specific loading condition and wave condition in a polar coordinate diagram.

In addition, the second DB is generated by checking the corresponding loading condition according to the actual navigation and updating the first DB for each wave condition for the corresponding loading condition by the interpolation algorithm, and according to the interpolation algorithm The operation guidance data in the actual operation may be provided.

In addition, it is possible to check the expected wave condition during the actual operation from the wave forecast data.

In addition, according to the maximum maneuverable rolling angle of the ship, by using the navigation guidance data, a warning is issued in case of continuous navigation in wave conditions in which danger is predicted, and the vessel speed is changed in the navigation guidance data, or the navigation route is changed. A step of changing and determining an optimal route may be further included.

On the other hand, another embodiment of the present invention is calculated by calculation for wave conditions of various significant wave height and average wave period combinations for each loading condition of specific draft and GM before delivery of the ship, and transverse according to ship speed and wave direction built in advance a first DB of fluctuation angle; A second DB generated for each wave condition for the corresponding loading condition by checking the corresponding loading condition according to the actual operation; A sea state prediction unit that checks expected wave conditions during actual operation from wave forecast data; and a navigation guide providing unit that provides navigation guide data corresponding to the confirmed wave condition in real time through an interpolation algorithm in the actual navigation loading condition. Provides a system for implementing a safe navigation guideline algorithm of a ship, including.

In addition, according to the maximum maneuverable rolling angle of the ship, by using the navigation guidance data, a warning is issued in case of continuous navigation in wave conditions in which danger is predicted, and the vessel speed is changed in the navigation guidance data, or the navigation route is changed. By changing, to determine the optimal route, the optimal route determining unit; may further include.

In addition, it may further include a display providing a roll angle according to the ship speed and wave direction for each specific loading condition and wave condition of the navigation guide data in a polar coordinate diagram.

In addition, the second DB is generated by checking the corresponding loading condition according to the actual navigation and updating the first DB for each wave condition for the corresponding loading condition by the interpolation algorithm, and according to the interpolation algorithm The operation guidance data in the actual operation may be provided.

On the other hand, another embodiment of the present invention provides a computer readable recording medium on which a computer program for executing the method for implementing the above-described ship safe navigation guideline algorithm in a computer is recorded.

According to the present invention, it is possible to provide navigation guidance data in real conditions through an interpolation algorithm using calculated conditions to provide more realistic navigation guidance data in real time that reflects actual loading conditions and changes in sea conditions, and to ship owners more It is possible to enhance the stability of a ship, especially a container ship and cargo, by providing realistic navigation guidance data in real time, and to determine an optimal route for safe operation considering the maximum operational rollover information.

1 illustrates a container arrangement method considering rollover according to the prior art.
2 is a flowchart of a method for implementing a safe navigation guideline algorithm for a ship according to an embodiment of the present invention.
FIG. 3 is a graph illustrating the calculation range of loading conditions by the method of implementing the safe navigation guideline algorithm of the ship of FIG. 2. Referring to FIG.
Figure 4 illustrates a polar coordinate diagram and its DB for one wave condition under a specific loading condition of the method of implementing a safe navigation guideline algorithm for a ship of FIG. 2.
FIG. 5 illustrates a change in a risk area according to a change in loading conditions in the method of implementing the safe navigation guideline algorithm for a ship of FIG. 2 .
FIG. 6 illustrates the determination of an optimal route of the method of implementing the safe navigation guideline algorithm for a ship of FIG. 2 .
7 is a block diagram of a system for implementing a safe navigation guideline algorithm for a ship according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention having the above-described characteristics will be described in more detail with reference to the accompanying drawings.

A method for implementing a safe navigation guideline algorithm for a ship according to an embodiment of the present invention includes the steps of constructing a first DB 110 in advance by calculation for wave conditions for each loading condition before delivery of the ship (S110); Checking the loading conditions according to the operation, generating a second DB 120 for each wave condition for the corresponding loading conditions (S120), confirming the expected wave conditions during actual operation (S130), In the navigation loading condition, providing navigation guidance data corresponding to the confirmed wave condition through an interpolation algorithm in real time (S140), using the calculated conditions to provide navigation guidance data in real conditions through an interpolation algorithm Therefore, the main point is to provide more realistic flight guidance data in real time.

Hereinafter, with reference to FIGS. 2 to 6, a method of implementing a safe navigation guideline algorithm for a ship having the above configuration will be described in detail.

First, in the first DB construction step (S110), before delivery of the ship to the owner, the first DB 110 for wave conditions for each loading condition of the ship is calculated in a wide range to include most of the predicted operating conditions. built in advance by

That is, the first DB 110 is a transverse wave according to various significant wave heights (Hs) and mean wave periods (mean zero up crossing wave period; Tz) for loading conditions of a specific draft and metacentric height (GM). It can be built by calculating the oscillation angle.

Here, the significant wave height is defined as the average value obtained by summing up to 1/3 of the wave heights in the order of the highest wave heights at any time or among the number of waves observed continuously passing through one point. It is also defined as 4 times the Root Mean Square (RMS) of the surface elevation, and the mean wave period sets the average plane of the waveform as the reference line, and the individual waves from the points meeting the reference line when each waveform moves upward from wave peak to wave peak. may be the average period of

In addition, as shown in the following [Table 1], the loading condition can be directly input from the user through the user interface input screen or received from a loading computer dedicated to inputting the loading condition, and the blue condition can be provided from the user through the user interface input screen. It can be directly input or received from an external real-time wave measurement and prediction system.

detailed conditions input (example) unit loading conditions draft 13 m GM 3 m blue conditions Hs 11.5 m Tz 11.5 s

On the other hand, FIG. 3 is a graph illustrating the calculation range of the loading conditions by the method of implementing the safe navigation guideline algorithm of the ship of FIG. 2, and as shown in FIG. To select the range of , the draft and GM can be selected as variables because the roll has a large difference depending on the draft and GM.

Referring to this, GM is calculated as the difference between KM and KG, and the deeper the draft, the smaller the KM value, and the larger the KG, so the deeper the draft, the smaller the GM tends to be. In particular, the draft-GM relationship of the container ship to which this embodiment is applied generally conforms to this trend.

For reference, KM is the distance from the keel to the metacenter, and KG is the distance from the keel to the center of gravity. The point where the line of action of buoyancy when the ship is upright and the line of action of buoyancy when it is inclined meet is the metacenter. The height from the center of gravity of the ship to the metacenter can be defined as GM, may change according to changes with the size of the GM. That is, the rolling natural period of the ship may be shortened as the GM value increases, and may become longer as the GM value decreases.

In addition, Figure 4 illustrates a polar coordinate diagram and its DB for one wave condition under a specific loading condition of the method of implementing a safe navigation guideline algorithm for a ship of Figure 2, as shown in Figure 4, specific loading conditions and After inputting the wave conditions, a polar coordinate diagram for one wave combination and a database of rolling angles according to the corresponding ship speed and wave direction (or heading) are built to build the database for various load combinations for each loading condition. can do.

For example, referring to FIG. 4, assuming that the maximum operational roll angle of a container ship considering the stability of cargo anchoring is 20 °, the head sea and bow quartering sea areas are the danger area. Polar coordinate diagram It is displayed in color on the image and can be provided as data information.

Figure 5 illustrates the risk area change according to the loading condition change in the method of implementing the safe navigation guideline algorithm of the ship of Figure 2, as shown in Figure 5 (a) and (b), the loading condition of the GM is 3m If it changes to 6m, the risk area changes from the bow and bow sagging areas to the beam sea area even under the same sea condition, that is, the same wave condition, which is mainly affected by the change in the natural period of rolling due to the change in the loading condition. This is because, as in (a) and (c) of FIG. 5, under the same draft and GM loading conditions, when the sea state, that is, the wave condition of the significant wave height is changed from 11.5m to 7.5m, most of the area It is changed to a navigable area.

Therefore, in this embodiment, the subsequent steps are performed to provide navigation guidance data reflecting the changes in loading conditions and wave conditions during actual navigation as exemplified above in real time.

Next, in the second DB generation step (S120), after delivery of the ship owner, the draft according to the actual operation at sea and the loading condition of the GM are checked, and the significant wave height and average wave period for the loading condition are determined for each wave condition 2 DB (120) is created.

Here, the second DB 120 is generated by checking the corresponding loading condition according to the actual operation, and updating the first DB 110 for each wave condition for the corresponding loading condition by an interpolation algorithm, and is generated according to the interpolation algorithm. Operational guidance data in operation can be provided.

For example, as shown in (b) of FIG. 3, the second DB 120 may be generated by interpolating from the database of the calculated draft and GM's calculated range in advance. Specifically, as shown in the green box, the operating draft After creating a database for each GM condition by an interpolation algorithm, a database for GM corresponding to actual operating conditions, such as a red diamond, can be created by referring to the created database.

In addition, by interpolating the roll angle according to the ship speed and wave direction under specific wave conditions according to the interpolated database, the roll angle according to the ship speed and wave direction under various wave conditions during actual operation that was not calculated in advance You can create a database for .

That is, it is not possible to construct the first DB 110 for all loading conditions and wave conditions by calculation, and since the calculated value and the actual value during actual navigation are different, the interpolation algorithm uses the difference between the two values. It is possible to create a second DB 120 by updating 1 DB 110, and considering the loading conditions and wave conditions during actual operation and roll information such as the roll angle and roll natural period measured, a new position A database can be created in and used as realistic operational guidance data.

Next, in the wave condition confirmation step (S130), the expected wave condition during actual operation is confirmed.

Here, the wave condition can be confirmed from the wave forecast data and the expected meteorological information during actual operation. Blue conditions can be checked.

Next, in the operation guidance data provision step (S140), operation guidance data for actual operation conditions corresponding to previously confirmed wave conditions are provided in real time under the actual operation draft and GM loading conditions.

Here, the navigation guidance data may display the roll angle according to the ship speed and wave direction for each specific loading condition and wave condition in the polar coordinate diagram of FIG. 6 .

Next, in the optimal route determination step (S150), according to the maximum maneuverable roll angle of the ship, by using the navigation guideline data, warning is given in advance when continuing to operate in wave conditions in which risk is predicted, and the ship speed is determined from the navigation guideline data or change the navigation route, so that the optimal route that can be operated at less than the maximum possible rolling angle is determined by human resources such as captain and navigator or by a system equipped with artificial intelligence.

For example, as shown in FIG. 6, assuming that the maximum maneuverable roll angle is 20 °, the cruising speed is 10 knots, and the ship position is 30 °, the bow wave and bow bow areas are identified as dangerous areas during navigation. , By using navigation guidance data, it is possible to change the ship's speed to 15 knots or more, change the ship's altitude to 60° or more, or change the ship's speed and position at the same time to avoid dangerous areas and operate on the optimal route.

7 is a diagram showing the configuration of a system for implementing a safe navigation guideline algorithm for a ship according to another embodiment of the present invention, and descriptions that can be simply duplicated as the same system for implementing the method for implementing a safe navigation guideline algorithm for a ship described below. want to omit.

Referring to FIG. 7, the system for implementing the safe navigation guideline algorithm for a ship according to another embodiment of the present invention calculates wave conditions of various combinations of significant wave height and average wave period for each specific draft and GM loading condition before delivery of the ship The first DB (110) of the roll angle according to the ship speed and wave direction calculated and built in advance, and the second DB (120) generated for each wave condition for the loading condition by checking the loading condition according to the actual operation , Sea condition prediction unit 130 that checks expected wave conditions during actual operation from wave forecast data, and navigation guidance providing unit 140 that provides navigation guidance data corresponding to the confirmed wave conditions in real time under actual operation loading conditions. According to , and the maximum maneuverable roll angle of the ship, by using the navigation guidance data, warnings are given in case of continuous navigation in wave conditions where risk is predicted, and the ship speed or navigation route is changed in the navigation guidance data to optimize the route Including the optimal route determination unit 150, which determines , navigation guidance data in real conditions is provided through an interpolation algorithm using the calculated conditions to provide more realistic navigation guidance data in real time.

Here, a display (not shown) may be further included that provides the roll angle according to the ship speed and wave direction for each specific loading condition and wave condition of the navigation guide data in a polar coordinate diagram.

In addition, the second DB 120 is generated by checking the corresponding loading conditions according to the actual operation and updating the first DB 110 for each wave condition for the corresponding loading conditions by an interpolation algorithm, and according to the interpolation algorithm Operational guidance data in operation can be provided.

In addition, as another embodiment of the present invention, a container ship equipped with the above-mentioned safety navigation guideline algorithm implementation system for ships is provided.

Therefore, by using the conditions calculated by the method and system for implementing the safety navigation guideline algorithm for ships as described above, navigation guide data in real conditions is provided through an interpolation algorithm to reflect actual loading conditions and changes in sea conditions. Realistic navigation guidance data can be provided in real time, and more realistic navigation guidance data can be provided to ship owners in real time to enhance the stability of ships, especially container ships and cargoes, and to enable safe operation considering maximum operational rollover information. It can help determine the optimal route.

The embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can replace them at the time of this application. It should be understood that there may be waters and variations.

S110: 1st DB construction step
S120: Second DB creation step
S130: Wave condition confirmation step
S140: Operation guide data provision step
S150: Optimal route determination step
110: first DB 120: second DB
130: sea state prediction unit 140: navigation guidance provision unit
150: optimal route determination unit

Claims (13)

Prior to ship delivery, constructing a first DB for wave conditions for each loading condition in advance by calculation;
Checking the loading condition according to the actual operation, and generating a second DB for each wave condition for the loading condition;
Checking expected wave conditions during the actual operation; and
In the loading condition of the actual navigation, providing navigation guidance data corresponding to the confirmed wave condition in real time through an interpolation algorithm; Including,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 1,
Characterized in that the first DB is constructed by calculating the rolling angle according to the ship speed and wave direction for each wave condition of various combinations of significant wave height and average wave period for a specific draft and loading condition of GM,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 2,
Characterized in that the loading condition is directly input from the user or provided from the loading computer,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 2,
Characterized in that the wave condition is directly input from the user or provided from a real-time wave measurement and prediction system,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 2,
Characterized in that the navigation guide data displays the roll angle according to the ship speed and wave direction for each specific loading condition and wave condition in a polar coordinate diagram,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 1,
The second DB is generated by checking the corresponding loading condition according to the actual navigation and updating the first DB for each wave condition for the corresponding loading condition by the interpolation algorithm,
Characterized in that the navigation guidance data in the actual navigation is provided according to the interpolation algorithm.
A method for implementing a ship's safe navigation guideline algorithm. According to claim 1,
Characterized in that for confirming the wave condition expected during the actual operation from the wave forecast data,
A method for implementing a ship's safe navigation guideline algorithm. According to claim 1,
Depending on the maximum maneuverable rolling angle of the ship, by using the navigation guidance data, a warning is issued in case of continuous navigation in wave conditions in which danger is predicted, and the ship speed is changed in the navigation guidance data, or the navigation route is changed , characterized in that it further comprises the step of determining the optimal route,
A method for implementing a ship's safe navigation guideline algorithm. 1st DB of roll angle according to ship speed and wave direction, calculated in advance by calculation for wave conditions of various combinations of significant wave height and average wave period for each loading condition of specific draft and GM before delivery of the ship;
A second DB generated for each wave condition for the corresponding loading condition by checking the corresponding loading condition according to the actual operation;
A sea state prediction unit that checks expected wave conditions during actual operation from wave forecast data; and
A navigation guide providing unit that provides navigation guide data corresponding to the confirmed wave condition in real time through an interpolation algorithm in the actual navigation loading condition; including,
Ship safety navigation guideline algorithm implementation system. According to claim 9,
Depending on the maximum maneuverable rolling angle of the ship, by using the navigation guidance data, a warning is given in case of continuous navigation in wave conditions in which danger is predicted, and the ship speed is changed in the navigation guidance data, or the navigation route is changed , an optimal route determining unit for determining an optimal route; further comprising,
Ship safety navigation guideline algorithm implementation system. According to claim 9,
Characterized in that it further comprises a display providing a roll angle according to the ship speed and wave direction for each specific loading condition and wave condition of the navigation guide data in a polar coordinate diagram,
Ship safety navigation guideline algorithm implementation system. According to claim 9,
The second DB is generated by checking the corresponding loading condition according to the actual navigation and updating the first DB for each wave condition for the corresponding loading condition by the interpolation algorithm,
Characterized in that the navigation guidance data in the actual navigation is provided according to the interpolation algorithm.
Ship safety navigation guideline algorithm implementation system. A computer-readable recording medium on which a computer program for executing the method for implementing the safe navigation guideline algorithm of a ship according to any one of claims 1 to 8 is recorded in a computer.

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