KR101085124B1 - Freight lading simulation method and system thereof - Google Patents

Abstract

PURPOSE: A freight lading simulation method and a system thereof are provided to enable a user to efficiently check the arrangement of freight. CONSTITUTION: An input unit(110) receives container information and information about the volume and shape of freight. An operation unit(120) determines the arrangement of the freight based on the volume and shape information and calculates the lading efficiency according to the arrangement of the freight. A display unit(130) displays the arrangement of the freight with 3D effect. The operation unit establishes the maximum size of a rectangular as a lading space and selects a freight block among candidate blocks.

Description

Freight loading simulation method and system {FREIGHT LADING SIMULATION METHOD AND SYSTEM THEREOF}

The present invention relates to a cargo loading simulation method and system, and more particularly, to a cargo loading simulation method and system for allowing a user to conveniently simulate loading cargo into a container through a screen.

With the advent of the free trade, the share of exports and imports in the national economy has increased greatly. As a result, exports and imports using aircraft, shipments, and vehicles, which are a form of transportation, are also gradually increasing. In particular, in order to increase the efficiency of cargo transportation, transportation using large containers is actively used.

In general, when loading cargo into a container, it is very important to load cargo efficiently so that the empty space of the container is minimized. However, since the volume or shape of the cargo is different depending on the type of cargo, it is not effective to load the cargo at once. Therefore, before loading the cargo into the container, it is necessary to obtain the loading efficiency of the container through simulation in advance and to confirm the loaded arrangement form.

In particular, in the case of the air container is not formed in the form of a rectangular parallelepiped in seven or eight planes, in order to maximize the loading efficiency, it is important to properly load the cargo corresponding to the shape of the container.

Therefore, the technical problem to be achieved by the present invention is to provide a cargo loading simulation method that can be conveniently simulated by the user to load the cargo in the container, and can improve the loading efficiency of the container.

Carrying load simulation method according to an embodiment of the present invention for achieving the technical problem, the step of receiving information about the container and the cargo to be loaded through an input screen, the arrangement of the cargo is determined based on the input information And calculating loading efficiency according to the arrangement state of the cargo, and displaying the arrangement state of the cargo loaded in the container in three dimensions through an output screen.

The input screen may input at least one of a shipment origin, an arrival place, a shipment date, a container list, and a freight list.

The output screen includes a list of containers in which the cargo is loaded, a number of loaded cargoes, a loading container list including at least one of loading efficiency, weight, and volume, and a three-dimensional loading of the cargo in a container selected by a user. It may include a loading display unit for displaying a loading arrangement.

When the output screen is switched to the correction screen, when the user clicks the cargo to be loaded and drags the cargo, the cargo moves along the dragged position. When the user presses a special key, the cargo is rotated in three dimensions. can do.

Determining the arrangement of the cargo, and calculating the loading efficiency according to the arrangement state of the cargo, setting the largest rectangular parallelepiped inside the container as a loading space, selecting a block to be loaded in the loading space from candidate blocks Loading the stack space, dividing the remaining space except the blocks loaded in the stack space to generate three subspaces, and selecting a block to be loaded in the subspace from the candidate blocks and And loading it into a space, wherein the block may consist of cargoes having the same volume and shape.

In a cargo loading simulation system according to another embodiment of the present invention, an input unit for receiving information about a container and cargo to be loaded, determines the arrangement of the cargo based on the input information, and loads the cargo according to the arrangement state of the cargo. An operation unit for calculating the efficiency, and a screen display unit for displaying the arrangement state of the cargo loaded in the container three-dimensionally through the output screen.

As described above, according to the present invention, the layout of the cargo loaded in the container is displayed in three dimensions through simulation, so that the user can easily check the loading arrangement of the cargo, and the user can conveniently move the cargo to a desired position. In addition, by performing arithmetic processing to load the cargo in a specific loading pattern to the container, it is possible to maximize the loading efficiency of the container.

1 is a view showing the configuration of a cargo loading simulation system according to an embodiment of the present invention.
2 is an input screen displayed on the screen display unit according to an exemplary embodiment of the present invention.
3 is an output screen displayed on the screen display unit according to an exemplary embodiment of the present invention.
4 is a modified screen for explaining the additional loading of the cargo according to an embodiment of the present invention.
5 is a modified screen for explaining moving the cargo according to an embodiment of the present invention.
6 is a modified screen for explaining rotating the cargo according to an embodiment of the present invention.
7 is a flowchart illustrating a method of loading a block into a container according to an embodiment of the present invention.
FIG. 8 is a diagram for describing partitioning a space into three sub-spaces according to an exemplary embodiment of the present invention.
9A and 9B are views illustrating before and after space expansion in a container according to an embodiment of the present invention.
10A and 10B are diagrams illustrating a situation in which two spaces are merged.
11 is an exemplary view showing a process of loading a block into a container according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

Hereinafter, a block loading simulation system according to an embodiment of the present invention will be described. 1 is a view showing the configuration of a cargo loading simulation system according to an embodiment of the present invention. According to FIG. 1, a cargo loading simulation system 100 according to an embodiment of the present invention includes an input unit 110, a calculation unit 120, and a screen display unit 130.

The input unit 110 receives information about a container and cargo to be loaded from a user through a keyboard or a mouse. In addition, the input unit 110 receives further information about the addition, movement and rotation of the cargo from the user.

The calculation unit 120 determines an arrangement (loading pattern) of the cargo loaded in the container so as to have a maximum loading efficiency in response to the information input through the input unit 110, and calculates the loading efficiency according to the arrangement state of the cargo. . Even if the arrangement of the cargo is determined, when the arrangement state is changed by the user adding, moving, and rotating the cargo, the calculator 120 calculates the loading efficiency according to the changed arrangement of the cargo.

 The screen display unit 130 displays the arrangement state of the cargo loaded in the container three-dimensionally through the output screen.

Hereinafter, a method of loading cargo into a container through the screen display unit 130 will be described with reference to FIGS. 2 to 6.

2 is an input screen displayed on the screen display unit according to an exemplary embodiment of the present invention.

As shown in FIG. 2, there are "command" buttons (not shown) necessary for simulation calculation at the top of the input screen, and a basic data input unit 132, a container list input unit 134, and a cargo list input unit 136 are displayed. .

First, the basic data input unit 132 is a user interface (UI) for inputting basic data of a loading simulation. The basic data input unit 132 includes an input unit for inputting a title and description of the load simulation. It also includes a selector to select a shipment origin and destination, and a date controller to enter a shipment date. The selection of the ship origin and destination can be selected by the user by displaying a list of already defined databases.

Next, the container list input unit 134 is a user interface (UI) for inputting a list of containers to be loaded. The container list input unit 134 includes a container list displaying a list of containers, an add button for adding a new container, and a delete button for deleting a container of the list. Clicking the Add button displays a list of container databases for the user to choose.

The cargo list input unit 136 is a user interface (UI) for entering a cargo list to be put in the container. It includes a freight list that displays a freight list, an add button to add a new freight, and a delete button to delete freight from the list. The cargo list input unit 136 may input information such as the name of the cargo, the quantity of cargo, the number of loads, the remaining number, length, width, height, weight, volume, structure form, color, and the like.

When the user inputs all the basic data, the container list and the cargo list, and presses the "calculate" button (not shown), the calculation unit 120 starts the calculation, and when the operation is completed, the operation screen is automatically moved to the output screen to display the simulation result. Shows.

3 is an output screen displayed on the screen display unit according to an exemplary embodiment of the present invention.

As shown in FIG. 3, a loading container list unit 142 is positioned on the left side of the output screen, and a loading display unit 144 displaying a 3D graphic of the selected container is located on the upper right side. Also, at the bottom of the output screen, a loading information unit 146 that displays loading information of the container in text is located.

When the user selects one container in the loading container list unit 142, the loading display unit 144 displays a three-dimensional graphic representing the state in which the cargo is loaded, and the loading information unit 146 displays the loading information of the cargo loaded in the container. Is displayed.

First, the loading container list unit 142 displays a list of containers loaded with cargo. Solution overview of the loading container list unit 142 displays statistical information such as the total number of loaded cargo, the number of remaining cargo, the number of containers, the total loading volume and the loading weight.

Then, the interruption displays a list of loading containers in the form of a solution list. That is, the container list table shown in the loading container list unit 142 displays the name of each container, the number of loaded cargoes, loading efficiency, weight, volume, and the like. In particular, the calculation unit 120 calculates the loading efficiency of the container from the volume, shape, etc. of the loaded cargo, and determines the loading pattern of the cargo loaded in the container in order to maximize the loading efficiency of the container.

The stack display unit 144 displays a 3D graphic of the container selected by the user in the stack container list unit 142. The three-dimensional stacking layout is displayed as a base, but a two-dimensional cross-sectional view and a three-dimensional weight distribution map can also be viewed. The loading display unit 144 displays the internal state in which the cargo is loaded in the selected container in various forms such as a front view, a left side view, a right side view, a plan view, and a perspective view.

The loading information unit 146 displays the information on the container selected by the user in the loading container list unit 142 in a text form. The loading information section 146 shows more detailed information not displayed in the loading container list section 142.

On the other hand, the user can be added to load the cargo directly in order to efficiently load the cargo loaded in the container, it can be simulated to move or rotate the loaded cargo, below the output screen through FIGS. 4 to 6 This section describes how to simulate.

4 is a modified screen for explaining the loading of the cargo according to an embodiment of the present invention, Figure 5 is a modified screen for explaining moving the cargo according to an embodiment of the present invention. 6 is a modified screen for explaining rotating the cargo according to an embodiment of the present invention.

When the user selects a "modify" button (not shown) located at the top of the output screen, the output screen changes to a modification screen. The correction screen provides a function of modifying the result calculated automatically by the operator 120 as desired by the user.

When several empty containers and a cargo list are displayed on the screen, the user may drag and drop the desired cargo into a desired container as shown in FIG. 4. When the cargo approaches the inner wall of the container, it is automatically attached to the wall. It also automatically attaches to the nearest side when approaching another cargo already loaded. If the cargo once entered is out of the container, the cargo can be blinked to give attention.

When the cargo enters the container, as shown in FIG. 5, the user can freely move the cargo entering the container, and the cargo is loaded when the mouse button is released at the position where the cargo is to be placed. Cargo moving in a container is subject to the law of collision and gravity, and once blocked by another cargo in the horizontal direction, it can no longer proceed and stops moving in the forward direction. Even if there are no other cargoes to proceed, always be aware of the following conditions and attach them to the top of other cargoes or to the bottom of the container. To place it on top of another cargo, you must press a special option key. In other words, the laws of nature apply when moving normally, but to get out of it, you need to press a special option key. It is obvious that a person skilled in the art can easily change the design of the option key, function, operation, and the like.

And, as shown in Figure 6 can be rotated in six directions to put the cargo in the desired space. That is, it is possible to rotate three-dimensionally about the central axis of the three directions (left, right, front, rear, top and bottom) corresponding to the rectangular parallelepiped cargo, and move the finished cargo to the appropriate position as described above.

To move a cargo to another container, simply click and drag the cargo and drop it elsewhere. If the two containers are far apart, use the cut feature. In other words, select the desired cargo, press "Ctrl + X" to cut it out, go to the new container, press "Ctrl + V", the cargo disappears from the previous container and appears in the new container, and the cargo is moved back to the desired space. You just need to be located.

You can also delete a cargo once it has been selected and press the "DEL" key. At this point, the deleted cargo will reappear in the cargo list and the disappearance will remain empty and ready for another shipment.

If you press the "Save" button when all the work is completed in this way, all the contents will be saved in the recording medium such as the hard disk, and the next time you can load this file and continue working in the same way.

Hereinafter, a method of loading the cargo into the container through the specific loading pattern will be described with reference to FIGS. 7 through 11.

In particular, in the case of the air container is not formed in the form of a rectangular parallelepiped, but seven or eight surfaces, the calculation unit 120 to load the cargo to fit the shape of the container through the calculation process in order to maximize the loading efficiency do.

To find the optimal loading pattern that maximizes the volume usage of a container, we can try to find a very large number of cases, but trying all of them requires a lot of time and memory. Therefore, there is a need for an effective strategy to reduce this, in the embodiment of the present invention to use the following two principles.

First, the loading space is filled with blocks loaded with the same kind of cargo in a certain direction. That is, one block includes only the cargo having the same volume and shape, and since the load is attempted in units of blocks instead of individually, the time can be greatly reduced.

Secondly, when attempting to load a block, all possible cases are precalculated with an evaluation function to exclude the deviation from a certain range. In other words, an attempt is made to first load a block having the maximum evaluation value by the evaluation function, which will be described later.

In order to explain the procedure for obtaining a loading pattern of one container using the above two principles, the symbols and symbols are defined as follows in the detailed description and drawings of the present invention for convenience.

S: one cube of container

BS: Block to load in S

FIG. 7 is a flowchart illustrating a method of loading a block into a container according to an exemplary embodiment of the present invention, and FIG. 8 is a diagram illustrating the division of a space into three subspaces according to an exemplary embodiment of the present invention.

First, the calculation unit 120 sorts the candidate blocks to be loaded in descending order of volume (S710). That is, the stacking blocks are arranged in order from the bulky to the smallest.

Then, the largest rectangular parallelepiped inside the container is set to the space S and initialized (S720). That is, after obtaining the largest cuboid inside the container which is a non-cuboid, it is substituted into S.

The block BS to be loaded is determined for the space S, and the selected block BS is placed in the space S (S730). The method of determining the block BS generates all possible blocks in the space S and evaluates all of them to select a block having the maximum evaluation value.

That is, in order to determine the blocks BS to be loaded first in the space S, all possible candidate blocks are generated and evaluated, and among them, the one having the best-first expected value is selected. A candidate block is a structure that stores how many boxes in which direction a box is formed, and the expected value of forming this bundle is also stored. The expected value of the candidate block is the space efficiency expected when this candidate block is loaded (located in S).

For all candidate blocks, the expected value is obtained using the candidate block evaluation function and added to the array AS. After evaluating all candidate blocks, the AS is sorted in order of highest expected value. Finally, the loading block BS of the space S is determined as the first AS of the AS.

The candidate block evaluation function is a function that calculates the expected value when each candidate block is located in the space S. In order to calculate the expected value of the candidate block Bcurr in the current space Scurr, first, the space except the size of the Bcurr is divided into three subspaces, Stop, Sside, and Sfront. Each subspace is filled with the remaining blocks except Bcurr. Here, when VBcurr is the volume of Bcurr, B (i) is the volume of a loading block loaded in space i, and VScurr is the volume of the current space, the expected value EV is expressed by Equation 1 below.

In other words, the expected value (EV) is the result of arithmetically calculating the expected space efficiency when Bcurr is determined as a loading block in Scurr.

In this way, the selected loading block BS is positioned at the origin of the space S. The stacked blocks BS are deleted from the stacked blocks arranged in descending order.

In operation S740, three sub-spaces are generated by dividing the remaining space except for the block BS loaded in the space S. That is, when the block BS is located at the origin of the space S as shown in FIG. 8, the simulation system for loading the block divides the space except the loading block BS to generate three subspaces, Sside, Stop, and Sfront. For convenience, the front, side, and top views of the block BS are positioned in the space S, and the top and side views are shown.

The length, width, and height of the space S are LS, WS, HS, and the length, width, and height of the block BS, respectively, LBS, WBS, and HBS, respectively, and the size of the space x is Dx = (length of x, width of x, x The height of each subspace, DSside, DStop, and DSfront can be expressed as Equation 2 below.

When three subspaces are generated as described above, one of the three subspaces is selected and designated as the space S (S750). The selection order of the generated subspace is preferably Sside-> Stop-> Sfront, and can be changed according to the size and structure of the space.

On the other hand, the cuboid space S may not be able to completely fill the inside of the container, which is a non-cuboid, so that the vertex of the space S may contact the inner wall of the container by expanding it.

9A and 9B are views illustrating before and after space expansion in a container according to an embodiment of the present invention. Since the space S does not completely fill the inside of the container as shown in FIG. 9A, a point of the space S may be expanded to fill the inside of the container as shown in FIG. 9B. Accordingly, as shown in FIG. 9B, the position and size of the space S may be changed such that all vertices of the space S contact the walls of the container.

Then, it is determined whether the stackable block BS is in the candidate block in the current space S (S760), and if there is a stackable stacking block BS, the stacking block BS is selected and the selected stacking block BS is spaced. It is located in S (S790). However, when the block BS can no longer be loaded in the space S, the space is merged. That is, despite the expansion of the space S, if there is no block BS that can be loaded in the space S due to the size or shape of the current space S, it tries to merge with another neighboring space S 'to expand the space. (S770).

The space in which the loading block BS can no longer be loaded is referred to as an insoluble space. If the predetermined condition is satisfied with respect to the insoluble space S ', the insoluble space S' may be merged into an adjacent space S. The conditions for integrating the dead space S 'into the space S are as follows.

(1) Two spaces should have one adjacent surface

(2) The size of adjacent surfaces of S 'is greater than or equal to S

(3) The origin of S 'is smaller than that of S (xS' ≤ xS, yS '≤ yS, zS' ≤ zS)

10A and 10B are diagrams illustrating a situation in which two spaces are merged. FIG. 10A shows that the space S 'is merged into the space S and the space S' is removed when the adjacent surfaces of the two spaces are the same, and FIG. 10B shows that the size of the adjacent surface of the space S 'is larger than the space S. It shows that the space S 'is reduced. If the block BS cannot be loaded despite such space merging, the dead space S 'is used for the next space merging.

In the state where the space S merged with the neighboring space is expanded in this way, it is determined whether the block BS stackable in the space S is in the candidate block (S780). If there is a stacking block BS stackable in the expanded space S, the block BS is selected and the selected block BS is placed in the space S (S790). Similarly, the loaded block BS is deleted from the aligned candidate blocks. On the other hand, if the space S cannot be loaded in the space S even though the space S is merged and expanded, the procedure is terminated.

Then, it is determined whether the block BS to be loaded remains in the candidate block (S800), and when all the loading blocks BS are stacked in the space S, the procedure ends. If the block BS to be loaded remains, the process of steps S740 to S790 is repeated again.

Hereinafter, a process of loading a block into a container will be described with reference to FIG. 11. 11 is an exemplary view showing a process of loading a block into a container according to an embodiment of the present invention.

For convenience of explanation, it is assumed that the candidate block is composed of three types of A blocks, B blocks, and C blocks having different volumes as shown in FIG. Here, the size of the cargo included in the A block, B block and C block is different from each other, each block is composed of one kind of cargo.

First, as shown in (b) of FIG. 11, the largest rectangular parallelepiped inside the container is set to the space S and initialized, and the A block having the largest expected value of the candidate block evaluation function is positioned in the space S as shown in FIG. Let's do it. Then, the loaded A blocks are deleted as shown in FIG.

As shown in (e) of FIG. 11, three subspaces, Stop, Sside, and Sfront, are generated by dividing the remaining space except the A block in the space S. FIG. 11E illustrates a front view of the container, so the display of Sfront is omitted.

One of three subspaces generated as shown in FIG. 11 (f) is selected and designated as the space S. FIG. In FIG. 11 (f), Stop is selected from three subspaces.

Then, as shown in (g) of FIG. 11, the vertex of the space S is extended to contact the inner wall of the container, and the B block is loaded into the expanded space S as shown in FIG. 11 (h). Then, the loaded B blocks as shown in FIG. 11 (i) are deleted.

Then, as shown in (j) of FIG. 11, the remaining spaces except for the B block are partitioned to generate three subspaces, Stop, Sside, and Sfront, and as shown in FIG. Specified by space S.

Here, if the C block cannot be loaded in the space S, an attempt is made to merge the space with the adjacent space S 'as shown in FIG. 11 (l), and as a result, the space S is further expanded as shown in FIG. 11 (m). do. Then, when the C block is loaded as shown in FIG. 11 (n), all the loading procedures are completed as shown in FIG. 11 (o).

In this way, the operation unit 120 may increase the loading efficiency of the container as much as possible by arithmetic processing to load the cargo in a specific loading pattern.

On the other hand, even if the operation unit 120 simulates to load the cargo to have the maximum loading efficiency through a specific loading pattern as described in Figures 7 to 11, the user changes the arrangement by moving or rotating the cargo according to the condition of the cargo You can.

For example, when loading a fragile cargo, the user can change the arrangement of the cargo through the modification screen in order to safely transport the cargo even if the loading efficiency is rather low. At this time, the calculation unit 120 calculates the loading efficiency according to the arrangement of the cargo and displays it on the output screen.

As described above, according to an embodiment of the present invention, the layout of the cargo loaded in the container is displayed in three dimensions through simulation, so that the user can easily check the loading arrangement of the cargo and can conveniently move the cargo to a desired location. have. In addition, by performing arithmetic processing to load the cargo in a specific loading pattern to the container, it is possible to maximize the loading efficiency of the container.

On the other hand, the above-described cargo loading simulation method is implemented by computer-readable codes / instructions / programs. For example, the method may be implemented in a general-purpose digital computer operating the code / instructions / program using a computer readable recording medium. The computer-readable recording media may include magnetic storage media (ex, ROM, floppy disk, hard disk, magnetic tape, etc.), optical reading media (ex, CD-ROM, DVD, etc.) and carrier waves (ex, transmission via the Internet). Storage media, and the like. In addition, embodiments of the present invention may be implemented as a medium (s) containing computer readable code, such that a plurality of computer systems connected via a network can be distributed and processing operations. It is obvious that the functional programs, codes and code segments realized by the method of the present invention can be easily inferred by programmers in the technical field to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

100: cargo loading simulation system, 110: input unit,
120: arithmetic unit, 130: screen display unit,
132: basic data input unit, 134: container list input unit,
136: cargo list input unit, 142: loading container list,
144: loading display unit, 146: loading information unit

Claims (11)

Receiving volume and shape information about a container and a cargo to be loaded through an input screen;
Determining the arrangement of the cargo based on the input volume and shape information, calculating a loading efficiency according to the arrangement state of the cargo, and
Displaying the arrangement state of the cargo loaded in the container in three dimensions through an output screen;
Determining the arrangement of the cargo, calculating the loading efficiency according to the arrangement state of the cargo,
Setting the largest rectangular parallelepiped inside the container as a loading space;
Selecting blocks to be loaded in the loading space from among candidate blocks and loading the blocks in the loading space;
Generating three sub-spaces by dividing the remaining space except for the blocks loaded in the loading space;
Selecting a block to be loaded in the lower space from among the candidate blocks and stacking the block in the lower space; and
Merging the subspace with an adjacent subspace when there is no block that can be loaded in the subspace. The method of claim 1,
The input screen,
A freight loading simulation method that displays a user interface for entering at least one of a shipment origin, destination, shipment date, container list, and cargo list. The method of claim 2,
The output screen,
A list of loading containers including at least one of a list of containers in which the cargo is loaded, a number of loaded cargoes, a loading efficiency, a weight, a volume, and
A load loading simulation method comprising a load display unit for displaying a three-dimensional stacking arrangement in which the load is loaded in the container selected by the user. The method of claim 1,
When the output screen is switched to the correction screen, when the user clicks the cargo to be loaded and drags the cargo, the cargo moves along the dragged position. When the user presses a special key, the cargo is rotated in three dimensions. Cargo loading simulation method. The method of claim 1,
And said block comprises cargo having the same volume and form. A computer-readable recording medium having recorded thereon a program for causing a computer to execute one of the methods described in claims 1 to 5. Input unit for receiving volume and form information about the container and cargo to be loaded,
An operation unit which determines the arrangement of the cargo based on the input volume and shape information, and calculates the loading efficiency according to the arrangement state of the cargo; and
It includes a screen display unit for displaying the arrangement state of the cargo loaded in the container in three dimensions through the output screen,
The calculation unit,
The largest rectangular parallelepiped inside the container is set as a loading space, a block to be loaded in the loading space is selected from candidate blocks and loaded into the loading space, and the remaining space except for the blocks loaded in the loading space is divided into 3 Create subspaces, select blocks to be loaded in the subspaces from among the candidate blocks, load them into the subspaces, and merge the subspaces into adjacent subspaces when there are no blocks that can be loaded in the subspaces Cargo loading simulation system. The method of claim 7, wherein
The screen display unit,
A cargo loading simulation system comprising a user interface for entering at least one of a shipment origin, destination, shipment date, container list, and cargo list. The method of claim 8,
The output screen,
A list of loading containers including at least one of a list of containers in which the cargo is loaded, a number of loaded cargoes, a loading efficiency, a weight, a volume, and
A load loading simulation system including a load display unit for displaying a three-dimensional load layout of the load loaded in the container selected by the user. The method of claim 7, wherein
The input unit,
Receiving more information about the movement and rotation of the cargo,
When the output screen is switched to the correction screen, when the user clicks the cargo to be loaded and drags the cargo, the cargo moves along the dragged position. When the user presses a special key, the cargo is rotated in three dimensions. Cargo loading simulation system. The method of claim 7, wherein
And said block comprises cargo having the same volume and shape.

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