JP2008105825A - Raw material transport ship allocation planning system and raw material ship allocation planning method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raw material transport ship allocation planning system and a raw material ship allocation planning method, capable of producing an efficient berth unloading plan and stably supplying raw material. <P>SOLUTION: The raw material transport ship allocation planning system plans a ship allocation plan of steel raw material transport ship in the steel industry having a plurality of manufacturing plants. The raw material transport ship allocation planning system comprises a ship allocation plan planning device 110 planning a long period row material transport ship allocation plan, a ship allocation plan planning device 120 planning a short period row material transport ship allocation plan, and a factory-based cargo-handling adjusting device 210 adjusting a factory-based raw material transport ship allocation plan in each factory. The factory-based cargo-handling adjusting device 210 corrects the factory-based raw material transport ship allocation plan according to the short period raw material transport ship allocation plan. The ship allocation plan adjusting device 120 corrects the short period raw material transport ship allocation plan according to the corrected factory-based raw material transport ship allocation plan. By repeating those processing, the short period raw material ship allocation plan is planed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ship allocation plan planning function for creating a ship allocation plan for transporting steel raw materials such as steel stone and coal from overseas, and the work progress of the mountain that is the loading target and the movement of the ship. TECHNICAL FIELD The present invention relates to a raw material transportation allocation plan system and a raw material allocation planning method having a ship entry adjustment function when a change occurs in the progress of transportation work.

  Conventionally developed computer systems for planning problems formulate constraints for planning and evaluation criteria for planning results, and solve them mathematically (mathematical programming), or for planning There are methods (expert system method) that describe the constraint conditions and know-how of the person in charge of planning as a program.

This expert system method aims to hold constraint conditions and planning procedures in a form that can be easily changed (see, for example, Patent Document 1). Such an optimal control system for raw material berths includes a knowledge object including data such as a schedule for entering a raw material ship, a schedule for repairing a landing facility, a yard plan, and an unloading efficiency, and a knowledge base including operation knowledge of a skilled operator. Aims to automate the loading and unloading work plan by determining the berth berth and unloading work time of the raw material ship that minimizes the cost of berthing, and to improve the efficiency of unloading work in raw material transportation. .
In addition, using a ship allocation planning device using a suitable ship selection knowledge base for deciding a transport ship suitable for realizing an annual transport plan, a loading decision knowledge base for improving the loading ratio of a transport ship, etc. There is also a technology that decides the timing, formulates a long-term raw material transportation allocation plan, responds to fluctuations in the movement of the raw material ship, etc., performs daily operations with the ship entry adjustment device, and changes the plan flexibly (for example, patents) Reference 2).
JP-A-4-205204 JP-A-8-272402

However, since it is necessary to formulate an unloading work plan on the premise of an entry plan for a raw material ship, a highly reliable ship entry plan is indispensable to actually realize an efficient unloading plan.
In the raw material transportation plan from overseas, the original plan was revised due to changes in the necessary transportation targets due to changes in the shipping plan due to the progress of loading and unloading work in Yamamoto, fluctuations in vessel movement due to weather, etc.・ There are problems that it is often necessary to make changes, or that the actual work situation and actual results diverge and become unusable. In other words, once a transportation plan is made, there are not a few situations in which the ship entry plan fluctuates due to disturbance factors and the unloading work plan is forced to change due to the influence, or the plan itself becomes meaningless.

Conventionally, in response to such fluctuations, the person in charge of dispatching has confirmed loading information and vessel movements as needed, and based on the results, consulted with the factory yard manager to change the loading brand and quantity, and so on. The decision was made to change ships. In the end, it was the actual situation that the raw material inventory of the factory, the usage plan, and the movement of the transport ship were grasped separately, and the response was stopped ad hoc according to the occurrence of inconvenience.
As a result, the long-term outlook for raw material inventory has not been established, and there has been a problem that it is difficult to stably supply raw materials for supply and demand.
Also, in steel companies that have multiple factories, there are different cases where the constraint conditions differ from factory to factory, and the closest situation must be the factory. In the two-stage process such as planning and adjustment, Since it was not possible to incorporate and process the constraint conditions of each factory, it is difficult to make a highly accurate plan.

  The present invention has been made to solve the above-mentioned conventional problems, and a raw material transport allocation plan system and a raw material allocation planning method capable of creating an efficient berth unloading plan and stable raw material supply. The purpose is to provide.

The raw material transport allocation plan system according to the present invention is a raw material transport allocation plan system for drafting a distribution plan for a steel raw material transport ship in the steel industry having a plurality of manufacturing factories. A ship allocation plan planning device for planning, a ship allocation plan adjusting device for creating a short-term raw material transport allocation plan, and first storage means for storing the planned long-term and short-term raw material transport allocation plans, respectively. , A factory-specific cargo handling adjustment device that adjusts a factory-specific material transportation / shipment plan for each factory, and a second storage unit that stores the factory-specific material transportation / shipment plan adjusted for each factory.
The ship allocation planning device includes a transport object determining means for determining a transport brand to which a transport ship is to be assigned, a ship determining means for allocating the determined transport brand to a transport ship, and entry into each factory of the assigned transport ship. Transportation timing determining means for determining the timing, and the entry timing in each factory of the transport ship is stored in the first storage means as a long-term raw material transportation allocation plan.
The ship allocation plan adjusting device displays timing related to ship entry for each factory based on input means for reading the long-term material transport allocation plan from the first storage unit and the long-term material transport allocation plan. At the same time, the ship entry schedule display / input means that allows correction input and the timing related to the voyage for each ship are displayed based on the long-term raw material transportation allocation plan, and the voyage schedule display / input that allows correction input. Means, inventory transition calculation / display means for automatically calculating / displaying the forecast of inventory transition based on the correction input for the arrival and departure schedule, and early departure / stagnation fee based on the correction input for the arrival and departure schedule And the early entry and berthing fee calculation means for automatically calculating and displaying the information, and storing the modified entry and voyage schedule in the first storage means as the short-term raw material transportation allocation plan.
The factory-specific cargo handling adjustment device includes an input unit that reads a plan for each factory from the first storage unit in the short-term raw material transport allocation plan, and the input raw material transport allocation plan for each factory. Based on the ship entry timing at each factory, and the entry schedule display / input means that enables correction input, and inventory transition calculation / display that automatically calculates and displays the forecast of inventory transition based on the correction input And an early departure / arrival ship fee calculating means for automatically calculating / displaying an early departure / arrival ship fee based on the corrected input, and adjusting the factory-specific raw material transportation allocation plan by each factory Store in storage means.

Further, in the raw material transport allocation plan system according to the present invention, the shipping allocation adjustment device includes an input unit for inputting the factory-specific raw material transfer allocation plan, and the factory stored in the second storage unit A separate material transportation / shipping plan is fetched by the input means, and a short-term material transportation / shipping plan is adjusted based on the factory-specific material transportation / shipping plan.
Moreover, in the raw material transportation / ship allocation planning system according to the present invention, the factory-specific cargo handling adjustment device includes factory constraint data input means for inputting data on regional constraint conditions and facility constraint conditions for each factory.

Further, the raw material allocation plan method according to the present invention is a method for drafting a raw material transport allocation plan using the above-mentioned raw material transport allocation plan system,
A step of modifying the factory-specific material transport allocation plan based on the short-term material transport allocation plan,
The ship allocation plan adjusting device repeats the step of correcting the short-term material transport allocation plan based on the corrected factory-specific material transport allocation plan, and formulates a material allocation plan.

  In the present invention, for example, a system for sharing signals between the head office (ship allocation planning device / ship allocation planning adjustment device) and the factory (factory handling adjustment device) is constructed, and is planned and adjusted at the head office. Since the plan was sent to each factory, the plan was changed at each factory with the constraints specific to each factory, the plan was sent to the headquarters, and the plan was made again based on the information changed at that factory. The latest information can be confirmed on both sides using electronic data, which has improved operational efficiency and speed. In addition, the restriction conditions unique to each factory that cannot be grasped at the head office can be entered at each factory, the information of each factory is integrated at the head office, and the information is transmitted to each factory. Compared to the conventional system, it is now possible to make and modify a ship allocation plan under detailed conditions. In addition, based on the ship allocation schedule, a function for predicting the amount of inventory and usage for each brand in the factory is provided, and the ship allocation schedule is corrected, so that it is easy to make decisions when making corrections. Furthermore, in addition to the forecast of the inventory amount, a function for calculating a stay fee and an early delivery fee based on the ship allocation schedule is provided, so that an optimum schedule of costs can be evaluated from the stay fee and early delivery fee.

Hereinafter, the material transport ship allocation planning system according to the embodiment of the present invention is referred to as [Overall system], [Headquarters material transport ship allocation system], [Factory material transport ship allocation system] and [Reflecting factory-specific ship allocation plan data] This will be described in detail with reference to the drawings.
[Whole system]
FIG. 1 is a diagram showing an overall configuration of a raw material transportation / shipping planning system according to the present invention. The headquarters raw material transportation / shipping system 100 for planning / adjusting the ship allocation plan at the head office and the factory raw material transportation / shipping system 200 for adjusting the ship allocation plan at the factory are configured.

  The headquarters material transportation / shipping system 100 includes a ship assignment planning device 110, a ship assignment plan adjusting device 120, and a ship assignment DB (database) 130. A material purchase system 301, a material distribution system 302, a sailing management system 303 are provided. For example, LAN and WAN are connected via a network line or a dedicated line so that necessary data can be input from the factory raw material management system 304 when making a ship allocation plan. It is assumed that the ship allocation plan planning device 110 and the ship allocation plan adjustment device 120 are each configured by a computer system.

  The ship allocation planning apparatus 110 is an apparatus for preparing a long-term ship allocation plan at a timing such as once every six months, three months, or once a year. This is formulated in response to a sales plan, a production plan, or the like, which is formulated once every six months, three months, or one year, and the planned data is stored in the dispatching DB 130. In response to this long-term ship allocation plan, the ship allocation plan adjustment device 120 is a device for drafting a short-term plan in units of weeks or days. Then, the long-term ship allocation plan is read from the ship allocation DB 130, the results from the time of the long-term plan formulation to the present time are input, the short-term ship allocation plan is formulated based on the latest situation, Revise the ship allocation plan. Then, the latest plan for one week or several weeks ahead is created, and the latest dispatching plan is stored in the dispatching DB 130.

The factory raw material transport / shipping system 200 is arranged in each factory of a plurality of manufacturing factories, and is constituted by a computer system. The factory raw material transportation / shipping system 200 inputs plan data prepared by the headquarters from the ship assignment DB 130 of the headquarters raw material transportation / shipping system 100, or the factory raw material transportation / shipping system 200 data is input to the headquarters raw material transportation / shipping system 100. For example, it is connected via a network line such as a LAN or WAN, or a dedicated line so that it can be output. The factory raw material transportation / shipping system 200 includes a factory-specific cargo handling adjustment device 210 and a factory-specific ship allocation DB 220. The factory-specific loading / unloading adjustment device 210 inputs only the data of its own factory from the dispatching DB 130 of the headquarters material transportation and dispatching system 100 and displays it so that the dispatching plan planned by the headquarters can be confirmed. Adjustments will be made in accordance with the conditions of restrictions (high tide time, berth operation status, factory repair date, government office operation date, etc.). Then, the adjusted plan is stored in the factory-specific ship allocation DB (database) 220. The data in the factory-based ship allocation DB 220 is transmitted to the head office or read from the head office, integrated with the data of other factories, readjusted at the head office, and corrected as a company-wide ship allocation plan. If there is a problem as a result of integrating the plans adjusted at each factory, the adjustment at the head office and the adjustment at the factory are repeated until the problem disappears.
In addition, although the headquarters material transportation / shipping system 100 and the factory material transportation / shipping system 200 are described as separate systems, for example, all systems are placed in the headquarters and only terminals are installed in the factory. Needless to say, it can be realized even in other forms.

[Headquarters material transportation and shipping system 100]
Next, a detailed configuration of the headquarters material transportation / shipment system 100 will be described with reference to FIG. The ship allocation planning apparatus 110 includes a data input / output unit 111, a transport target determining unit 112, a ship selecting unit 113, a transport schedule determining unit 114, and a transport timing determining unit 115. The data input / output unit 111 has a function of inputting information necessary for creating a long-term ship allocation plan from the raw material purchasing system 301, the raw material distribution system 302, and the factory raw material management system 304 shown in FIG. It has a function of outputting the planned ship allocation plan to the ship allocation DB 130 and storing it. The transport object determining unit 112 performs a process of determining the brand of the raw material for determining the transport schedule, and the ship selecting unit performs a process of assigning a suitable transport ship to the transport object that has been created by the transport object determining unit. The transport schedule determination unit 114 performs a process of determining other combined brands for the transport target brand with respect to the determined transport ship. The transport timing determination unit 115 determines the transport timing according to a predetermined ship allocation standard. The plan created in this manner is written in the ship assignment DB 130 via the data input / output unit 111, with the ship assignment plan data including the ship voyage schedule data and ship loading brand / quantity data.

  On the other hand, the ship allocation plan adjustment device 120 includes a data input / output unit 121, a ship arrival schedule display / change unit 122, a ship voyage schedule display / change unit 123, an inventory transition prediction calculation unit 124, an inventory transition display unit 125, and an early departure / stagnation ship. The long-term ship allocation plan that is configured by the fee calculation unit 126 and created by the ship allocation plan planning apparatus 110 is corrected to a weekly or daily plan. In the data input / output unit 121, a long-term plan is input from the ship assignment DB 130, and in order to cope with fluctuations in factory inventory plans, usage plans, loading / unloading status of Yamamoto, and movements of raw material ships in daily operations. Loads raw material usage plan data, raw material usage data by factory brand, raw material inventory data by factory brand, raw material ship movement latest data, and loading / unloading progress latest data. Further, the corrected plan data is output to the dispatching DB and stored.

  Based on the data input via the data input / output unit 121, the entry schedule display / change unit 122 performs a process of displaying the entry schedule to each berth of each factory in units of berths. It also has a function to change the displayed entry schedule, and the schedule can be modified as necessary. The ship voyage schedule display / change unit 123 displays the voyage schedule of each ship for each ship based on the data input via the data input / output unit. It also has a function to change the displayed sailing schedule, and the schedule can be modified as necessary. Based on the data input via the data input / output unit, the inventory transition prediction calculation unit 124 determines the type of each raw material brand (mineral type of iron ore such as lump ore or fine ore, strong or non-thin cohesive coal For each type of coking coal, etc.), compare the current actual inventory amount, the future acceptance amount, and the planned production and usage amount to calculate the future inventory change. The inventory transition display unit 125 displays the calculated inventory transition result on the screen. The early departure / departure fee calculation unit 126 calculates an early departure fee (despatch money) for each ship and a demurrage when the scheduled period is exceeded, based on the ship allocation schedule. In this calculation, the fee per unit time required for calculating the early departure fee and the berthing fee is set in advance for each ship or company and is stored as a parameter in the calculation unit, and is obtained by multiplying the increase / decrease stay time. be able to.

  The person in charge (operator) who adjusts the ship allocation plan based on the schedule for entering the ship, the schedule for ship voyage, inventory transitions, early departure and berthing charges, changes the schedule for entering the ship, changes the schedule for voyage, and provides optimal results such as costs. Repeat until you get a plan. In this way, if problems such as fluctuations in the schedule of entering the factory and unfavorable supply and demand conditions occur, changing the loading brand / amount for each ship, transferring the cargo scheduled to be lifted by other factories, while accessing the dispatching DB 130 It is possible to specify loading changes to other ships, addition of port calls to other loading points during the voyage, etc.

  In addition, the ship allocation plan adjustment device 120 can display the port entry schedule information of the transport ship for each loading point, the ship schedule information for each ship, the raw material inventory change by factory brand based on the raw material use plan and the port entry schedule, In day-to-day operations, supply and demand personnel can monitor it, and if the transition does not fall within the appropriate inventory range, it is also possible to adjust ship entry. For example, if a certain brand is almost out of stock, transfer of a shipping ship for another factory, change in port order, or if the berth is long due to the cargo handling situation at Yamamoto, change the loading brand or quantity.

Next, the processing process of the headquarters material transportation / shipping system 100 will be described with reference to FIG.
In the data input / output unit 111, annual raw material purchase plan data as shown in FIG. 7 from the raw material purchase system and raw material ship annual operation plan data as shown in FIG. 8 are sent from the raw material distribution system 302 as shown in FIG. Raw material use plan data by factory brand and raw material stock schedule data by factory brand as shown in FIG. 10 are input from the factory raw material management system 304 (Step 101).

  Next, in the transportation object determination unit 112, a brand of a material for which a transportation schedule is determined is selected and a process of determining is performed. At this time, the amount is set for each factory and each brand every month or week within the planning period (for example, 6 months, 3 months, 1 year, etc.) (Step 102). . This is entered on a screen as shown in FIG. 17 by using an input screen for inputting a scheduled amount for each factory and each brand in a table format. And based on this input value. Select from the brands with the highest importance and importance of transportation, such as the essential brands that require a certain amount of inventory for operation and the brands with a small stock margin.

  Next, in the ship selection part 113, the process which allocates the said transport target made by the transport target determination part with respect to the useable ship candidate with respect to the ship of the candidate is performed (Step103). Based on selection criteria such as being suitable for entry to the port of production of the relevant brand, close current position, low chartering fees, etc. When a ship selection knowledge base such as “Select a ship” or “Select a ship with a stock cut-out date / adjustment days ≧ ship entry date” may be automatically determined or when all cannot be determined automatically May be input using an input screen in which a list of ships that can be used and a list of transportation objects are displayed on the screen, and which transportation object is assigned to which ship. Further, the operator may input all data by manual input. Then, it is determined whether or not a transport ship has been selected. If a transport ship suitable for transporting the corresponding brand cannot be selected, the transport of that brand is abandoned, and the process returns to the target brand selection process in step 101 to select another brand. (Step 104). Repeat until required transport object is complete. If a transport ship can be selected, a transport unit is organized by adding the brands from the same production area or production area on the transportation route to the corresponding brand in the transportation lot organization process (Step 105). The brands to be stacked may be selected according to the same criteria as the transport brand selection process and the suitability of the transport route.

The transport schedule determination unit 114 predicts the date and time of arrival of a transport ship to each transit point for loading and unloading, and determines a ship port entry schedule and a cargo handling work schedule (Step 106). The cargo handling work schedule is determined for all loading and unloading sites. For example, a transportation schedule determination knowledge base such as “Protect the maximum number of products to be combined”, “Select the products to be combined from the same route”, “Determine each load amount according to the distribution rate for each product in the factory”, etc. The schedule may be automatically determined or manually input by the operator.
Finally, it is determined whether the necessary amount is planned, and these processes are performed for all brands that need to be transported in all landing sites (factories), or are repeated until the necessary amount is achieved (Step 107).

  The plan created in this manner is written into the ship assignment DB 130 via the data input / output unit 111, with the ship assignment plan data including the ship voyage schedule data and ship loading brand / quantity data. The ship allocation data to be written in the ship allocation DB 130 is data as shown in FIG. 15. For each ship code, “loading port code”, “loading date”, “brand code”, “loading weight” And the combination of “Fried Port Code”, “Fried Date”, “Brand Code”, and “Fried Weight” are arranged in order of date. Here, the “ship port code” is a code indicating the actual factory type, but the “factory code” may be added to the distribution plan data in order to facilitate data classification for each factory described later.

The processing process of the ship allocation plan adjusting device 120 for adjusting the long-term ship allocation plan data determined in this way to a short-term ship allocation plan in accordance with daily operations at the head office is shown in FIG. explain.
By the data input / output unit 121, the raw material use plan data by factory brand as shown in FIG. 9 from the raw material distribution system 302, the raw material use result data by factory brand as shown in FIG. 11 from the factory raw material management system 304, shown in FIG. Necessary data such as factory stock-specific raw material inventory result data, sailing management system 303 as shown in FIG. 14 as raw material ship movement and static information, as shown in FIG. 13 and loading / unloading progress latest information as shown in FIG. 13 are input (Step 201). Here, the raw material use plan information for each factory brand is the latest information that is sequentially updated in daily operations, unlike when a long-term plan is drawn up.

  Next, using the arrival schedule display / change unit 122, the arrival schedule is displayed for each berth of each factory as shown in FIG. 18 based on the latest allocation plan (Step 202). Similarly, the voyage schedule for each ship is displayed using the ship voyage schedule display / change unit 123 (Step 203). Further, the inventory transition prediction calculation unit 124 calculates the inventory, and causes the inventory transition display unit 125 to display a graph on the screen as shown in FIG. 19 (Step 204). Then, the early departure / delayed vessel fee calculation unit 126 calculates an early departure fee (despatch money) for each vessel and a demurrage when the scheduled period is exceeded based on the ship allocation schedule. In this calculation, the fee per unit time required for calculating the early departure fee and the berthing fee is set in advance for each ship or company and stored as a parameter in the calculation unit, and is obtained by multiplying the increase / decrease stay time. (Step 205).

  And based on these displayed information, it is judged whether the gap with a plan and a track record is large (Step206). The deviation between the plan and the actual result may be determined by setting an allowable range of the stock quantity in advance and automatically determining whether or not the predicted value is within the range. Thus, the determination may be made based on the tendency of time change. As a result, if the deviation is large, the entry schedule is changed (Step 208), the navigation schedule is changed (Step 209), the process returns to Step 202, and the above-described processing is repeated. Then, when there is no difference between the plan and the actual result, the updated plan data is output and stored in the ship assignment DB (Step 207). The headquarters material transportation / shipping system 100 can perform ship entry adjustment while performing such a change designation and simulating the inventory transition based on the result.

[Factory raw material transport and distribution system 200]
Next, a factory raw material transport / shipment system 200 placed for each factory will be described with reference to FIG.
The factory raw material transportation / shipping system 200 includes a factory-specific cargo handling adjustment device 210 and a factory-specific ship allocation DB (database) 220. The factory-specific cargo handling adjustment device 210 includes a data input / output unit 211, a ship arrival schedule display / change unit 212, an inventory transition prediction calculation unit 213, an inventory transition display unit 214, and an early departure / stagnation fee calculation unit 215. The daily ship assignment plan created by the ship assignment system 100 will be a more accurate plan based on each factory's unique constraints (high tide time, berth operation status, factory repair date, government office operation date, etc.) Correct it. Further, the factory-based ship allocation DB 220 is a database that stores ship allocation plan data corrected for each factory.

  The data input / output unit 211 inputs a daily ship allocation plan related to its own factory corrected in the ship allocation DB 130 of the head office system, and also provides information on the operation status in the factory and the constraint conditions for each factory port. Read. Further, the corrected plan data is output to the factory-based ship allocation DB 220 and stored. The entry schedule display / change unit 212 performs a process of displaying the entry schedule to each berth of the own factory in units of berths based on the data input via the data input / output unit 211. It also has a function to change the displayed entry schedule, and the schedule can be modified as necessary. Based on the data input via the data input / output unit 211, the inventory transition prediction calculation unit 213 calculates the current actual inventory amount, the future acceptance amount, and the scheduled production / use amount for each raw material brand. Compare and calculate future inventory trends. The inventory transition display unit 214 displays the calculated inventory transition result on the screen. The early departure / shipment fee calculation unit 215 calculates a departure fee (despatch money) for each ship and a demurrage when the scheduled period is exceeded based on the ship allocation schedule. In this calculation, the fee per unit time required for calculating the early departure fee and the berthing fee is set in advance for each ship or company and is stored as a parameter in the calculation unit, and is obtained by multiplying the increase / decrease stay time. be able to.

  The person in charge (operator) who adjusts the ship allocation plan changes the ship arrival schedule and the voyage schedule based on the arrival schedule, inventory transitions, early departure and berthing charges, and plans to obtain optimal results such as costs. Repeat the process until In this way, it becomes possible to consider the constraint conditions unique to each factory, and a highly accurate plan can be made.

Next, processing of the factory-specific cargo handling adjustment device 210 will be described with reference to FIG.
The data input / output unit 211 inputs necessary data such as factory brand-specific raw material usage record data as shown in FIG. 11 and factory brand-specific raw material inventory record data as shown in FIG. 11 from the factory raw material management system 304 (Step 301). .
Next, using the arrival schedule display / change unit 212, the arrival schedule is displayed for each berth of the own factory based on the latest allocation plan inputted from the head office system (Step 302). In order to extract the data of the own factory, it is only necessary to extract it using the landing port code or the factory code of the ship allocation plan data of FIG. 15 as a key.
Next, the inventory transition prediction calculation unit 213 calculates the inventory and displays the graph on the screen of the inventory transition display unit 214 (Step 303). Then, the early departure / delayed vessel fee calculation unit 215 calculates an early departure fee (despatch money) for each vessel and a demurrage for exceeding the scheduled period based on the dispatch schedule. In this calculation, the fee per unit time required for calculating the early departure fee and the berthing fee is set in advance for each ship or company and stored as a parameter in the calculation unit, and is obtained by multiplying the increase / decrease stay time. (Step 304).

  And based on these displayed information, it is judged whether the gap with a plan and a track record is large (Step305). The deviation between the plan and the actual result may be determined by setting an allowable range of the stock quantity in advance and automatically determining whether or not the predicted value is within the range. Thus, the determination may be made based on the tendency of time change. As a result, if the deviation is large, the entry schedule is changed (Step 307), the process returns to Step 302, and the above-described processing is repeated. Then, when there is no difference between the plan and the actual result, the updated plan data is output and stored in the factory-specific ship allocation DB 220 (Step 306). It is possible to perform ship entry adjustment for each factory while performing such change designation and simulating inventory transitions and early departure / shipment charges based on the results.

[Reflection of ship allocation plan data by factory]
The above processing is summarized as shown in FIG. After preparing a long-term plan with the ship allocation plan planning apparatus 110 at the head office (Step 401), the daily ship allocation plan is adjusted with the ship allocation plan adjustment apparatus 120 at the head office (Step 402). The ship allocation data is read in each factory, and the ship allocation plan is corrected by the factory loading / unloading adjustment device 210 according to the ship entry situation in the factory, and stored in the factory allocation DB 220 (Step 403). Then, the plan data corrected for each factory is read by the ship allocation plan adjustment device 120 from the factory-specific ship allocation DB 220 (Step 404), and after integrating the data of each factory, Write to the ship assignment DB 130 and update the data. And the process of Step 201-208 is performed and it is verified whether there is a malfunction as company-wide ship allocation plan data (Step 402). This process is repeated to create an optimal plan.

1 is an overall configuration diagram of a raw material transport allocation planning system according to an embodiment of the present invention. The block diagram of the headquarters material transportation dispatch system. The block diagram of a factory raw material transport ship allocation system. The flowchart which shows the process of a headquarters allocation plan planning apparatus. The flowchart which shows the process of the headquarters raw material allocation plan adjustment apparatus. The flowchart which shows the process of the cargo handling adjustment apparatus classified by factory. The figure which shows annual raw material purchase plan data. The figure which shows raw material ship annual operation plan data. The figure which shows the raw material use plan data according to factory brand. The figure which shows the raw material stock schedule data according to a factory brand. The figure which shows the raw material use performance data according to factory brand. The figure which shows the raw material inventory performance data according to factory brand. The figure which shows raw material ship movement latest data. The figure which shows the loading / unloading progress latest data. The figure which shows ship allocation plan data. The flowchart which shows the whole process of the raw material transport allocation plan system. The figure which shows the example of a ship arrival schedule display screen. The figure which shows the example of a ship arrival schedule display screen. The figure which shows the example of a stock transition display screen.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Headquarters raw material transport ship allocation system, 110 Ship dispatch plan planning apparatus, 111 Data input / output part, 112 Transport object determination part, 113 Ship selection part, 114 Transport schedule determination part, 115 Transport timing determination part, 120 Ship dispatch plan adjustment apparatus , 121 Data input / output unit, 122 Entry schedule display / selection change unit, 123 Ship voyage schedule display / change unit, 124 Inventory transition prediction calculation unit, 125 Inventory transition display unit, 126 Early departure / arrival ship fee calculation unit, 130 DB, 200 factory raw material transportation and distribution system, 210 factory-specific cargo handling adjustment device, 211 data input / output unit, 212 entry schedule display / change unit, 213 inventory transition prediction calculation unit, 214 inventory transition display unit, 215 early departure / stagnation fee Calculation unit, 220 Ship allocation DB by factory, 301 Raw material purchasing system, 302 Raw material distribution system, 303 Launch management system 304 factory raw materials management systems.

Claims (4)

A material transportation ship allocation planning system for planning a ship allocation plan for steel material transportation ships in the steel industry having a plurality of manufacturing plants,
A ship allocation plan planning device for planning a long-term raw material transportation ship allocation plan;
A ship allocation plan adjustment device for creating a short-term raw material transport allocation plan;
A first storage means for storing the drafted long-term and short-term raw material transportation allocation plans;
A factory-specific cargo handling adjustment device that adjusts the factory-specific material transport allocation plan for each factory,
A second storage means for storing a factory-specific raw material transportation allocation plan for each factory;
The ship allocation planning device
A transport object determining means for determining a transport brand to which a transport ship should be assigned;
A ship determining means for allocating a transport ship to the determined transport brand;
Transportation timing determining means for determining the entry timing in each factory of the assigned transport ship, and storing the entry timing in each factory of the transport ship in the first storage means as a long-term raw material transportation allocation plan,
The ship allocation plan adjusting device is
Input means for reading the long-term raw material transportation allocation plan from the first storage means;
Based on the long-term raw material transport allocation plan, while displaying the timing related to entering the factory for each factory, the entry schedule display / input means that enables correction input,
Based on the long-term raw material transportation allocation plan, while displaying the timing related to the voyage for each ship, the voyage schedule display and input means that enables correction input,
Inventory transition calculation / display means for automatically calculating / displaying the forecast of inventory transition based on the correction input of the ship entry and voyage schedule,
Early departure / arrival fee calculation means for automatically calculating / displaying the early departure / arrival fee based on the corrected input of the arrival / voyage schedule, and the short-term raw material transportation of the corrected entry / voyage fee Store in the first storage means as a ship assignment plan,
The factory-specific cargo handling adjustment device is:
Among the short-term raw material transportation and shipping plan from the first storage means, input means for reading a plan for each factory;
Based on the input raw material transportation allocation plan for each factory, the ship entry timing display / input means for displaying the timing related to entry at each factory and enabling correction input,
Inventory transition calculation / display means for automatically calculating / displaying inventory transition prediction based on the correction input;
An early departure / arrival ship fee calculating means for automatically calculating / displaying an early departure / arrival ship fee based on the correction input, and the adjusted raw material transportation / shipment plan according to factory of each factory is stored in the second storage means Raw material transportation ship planning system characterized by storing.   The ship allocation plan adjusting device includes an input unit for inputting the factory-specific raw material transport allocation plan, and takes in the factory-specific raw material transport allocation plan stored in the second storage unit by the input unit, 2. The raw material transportation / shipping plan according to claim 1, wherein a short-term raw material transportation / shipping plan is adjusted based on the factory-specific material transportation / shipping plan. 3. The material transportation ship allocation plan system according to claim 1, wherein the factory-specific cargo handling adjustment device includes factory constraint data input means for inputting data relating to regional constraint conditions and facility constraint conditions for each factory. . A method for drafting a raw material transport allocation plan using the raw material transport allocation plan system according to any one of claims 1 to 3,
A step of modifying the factory-specific material transport allocation plan based on the short-term material transport allocation plan,
The ship allocation plan adjustment device repeats the step of correcting the short-term raw material transport allocation plan based on the modified factory-specific raw material transport allocation plan, and formulates a short-term raw material allocation plan Characteristic raw material dispatch planning method.

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