JP7375781B2 - Planning device and planning method - Google Patents

Description

The present disclosure relates to a planning device and a planning method. The present disclosure particularly relates to a planning device and a planning method for creating a plan for arranging a plurality of types of raw materials in yards separated by addresses.

In the steelmaking process, raw materials such as iron ore and coking coal are separated by brand and stored in vast piles of raw material yards. Because each brand has different ingredients, yard piles are created and managed with sufficient distance between them to prevent mixing.

There have been many cases of planning pile storage areas on yards to improve operational efficiency. For example, Patent Document 1 discloses a yard layout in which the method of selecting a receiving location and determining a discharging location is evaluated, and an operation with the maximum evaluation score is selected based on an evaluation formula in which the closer the actual operation is, the higher the evaluation score is. Provides a simulator.

JP2012-212224A

However, the technique of Patent Document 1 uses a conventional method of separately managing raw materials of different brands. There is a need for technology that enables more efficient yard operations.

An object of the present disclosure, which was made to solve the above problems, is to provide a planning device and a planning method that can create a plan for arranging raw materials that enables efficient yard operation.

A planning device according to an embodiment of the present disclosure includes:
A planning device that creates a plan for arranging multiple types of raw materials in yards separated by addresses,
an input data acquisition unit that acquires input data including the arrangement status of the raw materials in the yard and data on receiving and discharging the raw materials;
a data processing unit that processes the placement status data, which is multidimensional information, into lower dimensional data;
a yard layout plan creation unit that creates the plan based on the low-dimensional data and the raw material receiving and discharging data;
The created plan allows the raw materials of different types to be arranged at the same address.

A planning method according to an embodiment of the present disclosure includes:
A planning method in which a planning device creates a plan for arranging a plurality of types of raw materials in yards separated by addresses, the method comprising:
acquiring input data including the arrangement status of the raw materials in the yard, and data on receiving and discharging the raw materials;
a step of processing the placement status data, which is multidimensional information, into lower dimensional data;
creating the plan based on the low-dimensional data and the raw material receiving and discharging data,
The created plan allows the raw materials of different types to be arranged at the same address.

According to the present disclosure, it is possible to provide a plan creation device and a plan creation method that can create a plan for arranging raw materials that enables efficient yard operation.

FIG. 1 is a schematic diagram showing a processing flow until iron ore is charged into a blast furnace. FIG. 2 is a schematic diagram showing an example of a yard. FIG. 3 is a schematic diagram showing how raw materials are stacked in the yard. FIG. 4 is a diagram illustrating the effects of the planning device according to one embodiment. FIG. 5 is a diagram illustrating an example of the configuration of a planning device according to an embodiment. FIG. 6 is a diagram illustrating an example of processing three-dimensional data. FIG. 7 is a diagram illustrating an example of the configuration of the yard layout plan creation section. FIG. 8 is a diagram showing an example of the arrangement of raw materials. FIG. 9 is a diagram showing an example of the arrangement of raw materials.

Hereinafter, a planning device and a planning method according to an embodiment of the present disclosure will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a processing flow until iron ore is charged into a blast furnace 105. FIG. 1 shows a berth 101, a yard 102, an ore pile 103, a sintering machine 104, and a blast furnace 105.

Iron ore, which is a raw material for the blast furnace 105, loaded on a ship that has entered the berth 101 is unloaded from the ship using a receiving machine, and is loaded into a storage area called a yard 102. The receiving machine is, for example, cargo handling equipment called an unloader. Yard 102 is also referred to as an ore yard or raw material yard. The content of iron ore varies greatly depending on the mine from which it is produced, so after it is loaded in the yard 102, the quality of the sintered ore, such as the hardness, and the property index of the total iron ore that is put into the blast furnace 105 are taken into consideration. The ingredients are blended to the desired composition and delivered to the ore pile 103. Raw materials such as iron ore are discharged from the yard 102 using, for example, a discharge machine. Among the iron ores that are discharged, fine ore that has an adverse effect on the air permeability of the blast furnace 105 is discharged to the sintering machine 104, and is sintered and solidified into sintered ore, which is discharged to the blast furnace 105. Further, the lump ore and the processed ore are discharged as they are to the blast furnace 105.

FIG. 2 is a schematic diagram showing an example of the yard 102. In the conventional operation flow, the transported raw materials are sorted by brand and date of receipt, and piled up in a pile in the yard 102. As shown in FIG. 2, yard 102 may be comprised of multiple areas. In the example shown in FIG. 2, the yard 102 has four areas: a first yard 102a, a second yard 102b, a third yard 102c, and a fourth yard 102d. A receiving machine 110 and a dispensing machine 111 are arranged adjacent to the first yard 102a to the fourth yard 102d.

Loading of raw materials into the yard 102 is performed by a receiving machine 110. Further, raw materials are discharged from the yard 102 by a discharge machine 111. Each of the receiving machine 110 and the dispensing machine 111 is movable from the first yard 102a to the fourth yard 102d. Each of the receiving machine 110 and the dispensing machine 111 can work only on the area facing each other from the first yard 102a to the fourth yard 102d. In FIG. 2, areas in which the accepting machine 110 and the dispensing machine 111 can move are illustrated as an accepting machine operating area and a dispensing machine operating area, respectively. For example, the receiving machine 110 installed between the second yard 102b and the third yard 102c can perform work only on the second yard 102b and the third yard 102c. For example, if raw materials are to be stacked in an area of the yard 102 where there is no space, the unloading time for the raw materials will increase. If cargo handling time is prolonged, additional costs called demurrage charges will be incurred. Therefore, it is necessary to make a plan in advance to secure space before the arrival of the ship.

Here, FIG. 3 is a schematic diagram showing how raw materials are stacked in the yard 102. The upper diagram in FIG. 3 shows raw materials of the same brand and received on the same date stacked together as one pile. Furthermore, the lower diagram in FIG. 3 shows a situation in which raw materials of the same brand in the same quantity and received on the same date are piled up as multiple piles. If the raw materials are stacked in multiple small piles, as shown in the lower diagram in Figure 3, dead space increases and the space available for new raw materials decreases. Therefore, the usage efficiency of the yard 102 decreases. Therefore, when receiving raw materials, it is desirable to arrange the raw materials in as large a pile as possible. However, in conventional operating methods, the piles of raw materials are separated by brand and by date of receipt. Therefore, there was a limit to how far the number of mountains could be reduced.

FIG. 4 is a diagram illustrating the effects of the planning device according to one embodiment. The planning device creates a plan for inventory management in the yard 102, that is, the arrangement of raw materials. The example in FIG. 4 compares the arrangement of piles of raw materials when looking at the yard 102 from one direction (for example, the lateral direction) between the conventional method and the method of the present disclosure. The total amount of loaded raw materials (inventory amount) is equal for brand A, brand B, and brand C.

In the conventional management method, as shown in the upper diagram of FIG. 4, piles of raw materials are avoided from overlapping each other. Therefore, newly stacked raw materials are placed away from existing piles. As mentioned above, dead space may reduce the efficiency of use of the yard 102. In this embodiment, as shown in the lower diagram in FIG. 4, different types of raw materials are allowed to be placed overlappingly at the same address in the yard 102, so that the yard 102 can be operated efficiently. Here, the different kinds of raw materials are, for example, raw materials of different brands, but are not limited thereto. In other words, the type is not limited to classification by brand, but may include, for example, classification by date of receipt and classification by attributes of raw materials other than these. Further, an address is an area divided by the yard 102.

Here, if different types of raw materials are placed one on top of the other at the same address in the yard 102, there is a risk that the wrong brand will be dispensed using the conventional method. In this embodiment, by introducing a three-dimensional measuring machine that can measure the yard 102 in real time, it is possible to track the brands and weights on the coordinates of the three-dimensional space of the yard 102. Therefore, the raw materials can be arranged while allowing different brands to overlap, so the height direction of the pile and a predetermined direction (for example, the longitudinal direction) of the yard 102 can be used more effectively than in the conventional method. , the space usage efficiency of the yard 102 is improved. Here, the three-dimensional measuring machine may be mounted on a GPS-equipped drone that performs aerial photography, for example. Additionally, the three-dimensional measuring machine may be attached to a plurality of predetermined high points or a mobile device with GPS to measure the entire yard 102. Alternatively, the three-dimensional measuring machine may perform measurement using the method described in JP-A-2019-20131, for example. Furthermore, measuring devices installed at the input and output sides of the mobile device may measure the amount of raw materials received and discharged in real time. Data measured by the three-dimensional measuring machine and the weighing device is transmitted to a host system, which will be described later, by, for example, wireless communication. The planning device can acquire data measured by the three-dimensional measuring machine and the weighing device as input data.

FIG. 5 is a diagram showing an example of the configuration of the planning device 200 and the host system. The plan creation device 200 includes an input data acquisition section 201, a data processing section 202, a yard layout plan creation section 203, and an output section 204. The upper system includes a data output unit 205 for each process, a process computer 206, and a business computer 207.

The host system executes various operations-related processes, including ship entry, yard 102 inventory management, blast furnace 105 management, and the like. The process computer 206 can acquire data such as supply and demand from the business computer 207 and data of each process from the data output unit 205 of each process, and output necessary data to the planning device 200. Here, the data of each process includes, for example, data measured by a three-dimensional measuring machine and a weighing device, and data of processes executed in the berth 101, the yard 102, the ore pile 103, the sintering machine 104, and the blast furnace 105. . The process computer 206 also acquires a plan for arranging raw materials in the yard 102 from the planning device 200, and executes inventory management for the yard 102 based on the plan and data measured by a three-dimensional measuring machine or the like. obtain.

The input data acquisition unit 201 acquires input data including the arrangement status (inventory amount) of raw materials in the yard 102 and data on receiving and discharging raw materials. The raw material receiving and discharging data may include data on the received amount, type (component), and dispensing amount of raw materials, as well as the capacity and operating time of the mobile device. Furthermore, the input data may include data such as the scheduled arrival date of raw materials, cost, blending plan, and planning period.

The data processing unit 202 processes data on the arrangement status (inventory amount) of raw materials, which is multidimensional information, into lower-dimensional data among the input data acquired by the input data acquisition unit 201. FIG. 6 is a diagram illustrating an example of processing three-dimensional data. In this embodiment, the arrangement of raw materials in the yard 102 is given as three-dimensional data as shown in the upper diagram of FIG. The data processing unit 202 aggregates (integrates) the inventory amount in the transverse direction of the yard 102 and processes it into two-dimensional data as shown in the lower diagram of FIG. Due to the dimension reduction processing performed by the data processing unit 202, the amount of calculations performed by the yard layout plan creation unit 203 is reduced, and a plan can be created in a shorter time than in the prior art.

The yard layout plan creation unit 203 divides the plurality of types of raw materials into addresses based on the low-dimensional data processed by the data processing unit 202 and the raw material receiving and discharging data acquired by the input data acquisition unit 201. A plan is created to place it in the designated yard 102. As described above, the plan created by the yard layout plan creation unit 203 allows raw materials of different types to be laid out at the same address. Details of the yard layout plan creation unit 203 will be described later.

The output unit 204 outputs the plan created by the yard layout plan creation unit 203 to the process computer 206.

The planning device 200 may be configured with a computer. The planning device 200 may be composed of one computer, or may be composed of a plurality of computers that can exchange information with each other. The processor of the computer may function as the input data acquisition section 201, the data processing section 202, the yard layout plan creation section 203, and the output section 204 by a program installed in the computer. Furthermore, the computer program may be recorded on a recording medium such as a CD or a magnetic tape, and may be readable by a computer.

FIG. 7 is a diagram illustrating an example of the configuration of the yard layout plan creation section 203. In this embodiment, the yard layout plan creation unit 203 includes an address definition unit 301, an inventory retention rate storage unit 302, a receiving location determination unit 303, a dispensing location determination unit 304, an inventory retention rate updating unit 305, and an end A determination unit 306 is provided.

The address definition unit 301 divides the yard 102 into addresses. The address definition unit 301 divides and defines the yard 102 into a predetermined number of addresses. In the example of FIG. 2, the yard 102 is divided into four areas: a first yard 102a, a second yard 102b, a third yard 102c, and a fourth yard 102d, and is further divided into addresses. The address definition unit 301 may define the addresses by dividing them into a fixed size, or may define the addresses by dividing the addresses into non-fixed sizes.

The inventory holding rate storage unit 302 stores the holding rate (inventory breakdown), which is the ratio of each type of raw material in the inventory, for each address classified by the address definition unit 301. The ownership rate is, for example, 75% for brand A, 20% for brand B, and 5% vacant for address "1" in the first yard 102a, and 55% for brand B for address "3" in the second yard 102b. , 40% for brand C, 5% vacant, etc. (see FIG. 8). The inventory holding rate storage unit 302 stores the holding rate in an accessible storage device. The stored inventory retention rate is updated by the inventory retention rate update unit 305.

The receiving place determining unit 303 determines a receiving place based on the input data acquired by the input data acquiring unit 201, such as data on the amount and type of raw materials received. The receiving location is the address of the yard 102 where incoming raw materials are placed.

The dispensing location determining unit 304 determines the dispensing location based on the data on the dispensing amount and type of raw materials among the input data acquired by the input data acquisition unit 201. The delivery location is the address of the yard 102 where the necessary types of raw materials are delivered.

The inventory holding rate updating unit 305 updates the holding rate based on changes in raw materials at the receiving location and the discharging location. Specifically, the inventory holding rate updating unit 305 calculates the holding rate after the incoming raw materials are placed at the receiving location determined by the receiving location determining unit 303. In addition, the inventory holding rate updating unit 305 calculates the holding rate after raw materials are paid out at the dispensing location determined by the dispensing location determining unit 304. Then, the inventory holding rate updating unit 305 stores the updated holding rate in the storage device.

The end determination unit 306 uses simulation to confirm that the plan made for a predetermined period (for example, the next month or the next week) is executable. If the end determination unit 306 determines that the plan is executable, it sends the plan to the output unit 204 and ends the process. If the end determination unit 306 determines that the plan is not executable, it re-creates the plan by setting the date back in the plan or starting over from the beginning of the plan, starting from the determination of the acceptance location. For example, the end determination unit 306 may determine that the plan is not executable when determining that the inventory amount of at least one type of raw material is less than a predetermined value based on the updated holding rate. Here, the predetermined value may be the minimum amount required for inventory (non-zero) or may be zero. In such a case, the end determination unit 306 may cause the receiving location determining unit 303 or the dispensing location determining unit 304 to change the determination of the receiving location or dispensing location in the plan.

Here, as explained with reference to FIG. 3, it is preferable that raw materials of the same type are arranged as one pile as large as possible. Here, in this embodiment, it is allowed to arrange raw materials of different types one on top of the other. Therefore, the mountain in the conventional method can be made to correspond to the "address" in this embodiment. The acceptance location determining unit 303 may accept items such that a majority of the inventory holding rate for each address is the same brand. Furthermore, the dispensing location determining unit 304 may select dispensing locations in the order of small piles, then piles that overlap other types of raw materials.

8 and 9 are diagrams showing an example of the arrangement of raw materials according to the plan created by the plan creation device 200 using the above-described plan creation method (FIGS. 5 and 7). FIG. 8 shows the state before receiving the incoming raw materials. Figure 9 shows the situation after receiving the raw materials. 8 and 9 show a pile of raw materials when the yard 102 is viewed from the lateral direction, the horizontal direction corresponds to the longitudinal direction, and the vertical direction corresponds to the height direction of the pile. In FIGS. 8 and 9, the first yard 102a and the second yard 102b are shown independently.

The raw materials that have arrived are 4000t brand A, 4000t brand B, and 10000t brand C. The receiving location determining unit 303 places most of the 4000t brand A at address "1" of the second yard 102b, and places the rest at address "2" so that the majority of the inventory holding rate for each address is the same brand. Deploy. For the same reason, the receiving location determining unit 303 places 4000 tons of brand B at address "2" of the second yard 102b. Further, for the same reason, the receiving location determining unit 303 places half of the 10,000 ton brand C at addresses "2" and "3" of the first yard 102a, and places the rest at addresses "1" of the second yard 102b. Place it in As shown in FIG. 9, for almost all addresses, the majority of the holding rate (inventory breakdown) for each address can be of the same type (brand).

As described above, the planning device 200 and the planning method according to the present embodiment do not need to manage different types of raw materials separately, and do not need to arrange them with gaps as in the prior art. It is possible to operate the yard 102 in a similar manner. As a result, efficient receiving operations are possible, and additional costs such as demurrage fees can be avoided, resulting in significant cost benefits.

Although embodiments according to the present disclosure have been described based on various drawings and examples, it should be noted that those skilled in the art can easily make various changes or modifications based on the present disclosure. It should therefore be noted that these variations or modifications are included within the scope of this disclosure. For example, the functions included in each component or each step can be rearranged to avoid logical contradictions, and multiple components or steps can be combined or divided into one. It is. Embodiments according to the present disclosure can also be realized as a program executed by a processor included in the device or a storage medium recording the program. It is to be understood that these are also encompassed within the scope of the present disclosure.

For example, the plan creation device 200 may include the predicted change in ownership rate in the plan and output it to the process computer 206 of the host system. The process computer 206 may perform inventory management for the yard 102 by comparing the predicted change in ownership rate with the measurement results obtained by a real-time three-dimensional measuring machine. At this time, if there is a discrepancy between the predicted possession rate and the measurement result by the three-dimensional measuring machine, the process computer 206 outputs this information as input data to the planning device 200. You can let them recreate the plan.

101 Berth 102 Yard 103 Ore pile 104 Sintering machine 105 Blast furnace 110 Receiving machine 111 Dispensing machine 200 Planning device 201 Input data acquisition unit 202 Data processing unit 203 Yard layout plan creation unit 204 Output unit 205 Data output unit for each process 206 Process Computer 207 Business computer 301 Address definition section 302 Inventory holding rate storage section 303 Receiving place determining section 304 Dispatch place determining section 305 Inventory holding rate updating section 306 Termination determining section

Claims (4)

A planning device that creates a plan for arranging multiple types of raw materials in yards divided by addresses,
an input data acquisition unit that acquires input data including the arrangement status of the raw materials in the yard and data on receiving and discharging the raw materials;
a data processing unit that processes the placement status data, which is multidimensional information, into lower dimensional data;
a yard layout plan creation unit that creates the plan based on the low-dimensional data and the raw material receiving and discharging data;
The created plan allows the raw materials of different types to be arranged at the same address,
The yard layout planning department
an inventory holding rate storage unit that stores a holding rate, which is a proportion of each type of raw materials in inventory, for each divided address;
a receiving location determining unit that determines a receiving location that is the address at which the incoming raw materials are placed;
a dispensing location determining unit that determines a dispensing location that is the address to which the raw materials are to be disbursed;
A plan creation device comprising: an inventory holding rate updating unit that updates the holding rate based on changes in the raw materials at the receiving place and the discharging place. The yard layout planning department
A claim comprising: an end determination unit that changes the determination of the receiving place or the dispensing place when it is determined that the inventory amount of at least one type of the raw material is less than a predetermined value based on the updated holding rate. The planning device according to item 1 . 3. The planning device according to claim 1 , wherein the raw material receiving and dispensing data includes data on the received amount, type, and dispensing amount of the raw materials, and the capacity and operating time of a mobile device. A planning method in which a planning device creates a plan for arranging a plurality of types of raw materials in yards divided by addresses, the method comprising:
acquiring input data including the arrangement status of the raw materials in the yard, and data on receiving and discharging the raw materials;
a step of processing the placement status data, which is multidimensional information, into lower dimensional data;
creating the plan based on the low-dimensional data and the raw material receiving and discharging data,
The created plan allows the raw materials of different types to be arranged at the same address,
The step of creating the plan includes:
Storing a holding rate, which is a proportion of each type of raw material in inventory, for each divided address;
Determining a receiving location that is the address where the incoming raw materials are placed;
determining a delivery location that is the address to which the raw materials are delivered;
A plan creation method comprising: updating the holding rate based on changes in the raw materials at the receiving location and the discharging location .

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