JPH1087036A - Stock allocating method, and deciding method of distribution mode and stocking position, in physical distribution system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stock allocation method in order to distribute marchandises with a high freshness to all the delivery customer, in the distribution of marchandises requiring a freshness management, and a deciding method of the distribution mode and the stock arranging base, in a physical distribution mode having plural distribution modes. SOLUTION: The spared shipment time is calculated from the designated delivery time of a customer, and the freshness restriction set as the period from the manufacturing data to the delivery time of each marchandise beforehand (Step 901), a stock satisfying the freshness restriction is extracted in order from the order award data of the severe spared time (Step 905), and the stock allocating is carried out from the old stock in order. When various distribution modes are considered, a distribution mode collection to allow the distribution to satisfy the freshness restriction is extracted from the time to distribute to the delivery customer from the factory, and the freshness restriction of the marchandise, and the final distribution mode and the stock arranging base are decided by considering the turnover ratio and the freshness restriction of the maechandise in the collection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution system, and more particularly, to a distribution system for foodstuffs that requires freshness management, which performs optimal inventory allocation to all destinations in accordance with a supplier's freshness strategy. The present invention relates to a method for allocating inventory in a logistics system capable of determining an optimal delivery mode and an inventory position, and a method for determining a delivery mode and an inventory location.

[0002]

2. Description of the Related Art Conventionally, in the distribution of products requiring freshness management, high freshness products that match the strategy of the supplier are provided to all destinations in consideration of the time required for delivery to the destination. No inventory provisions have been made to make this possible.

[0003] Further, in the case of a delivery mode in which the stock of goods is held at multi-stage bases from the production site to the delivery destination, ABC analysis is performed on the shipment amount of the goods and the turnover rate of each product is investigated. The inventory arrangement is determined so that products with a high turnover rate are stocked at a location near the customer, and products with a low turnover rate are stocked at a location such as a warehouse near the production factory.

[0004] As a prior art relating to this kind of distribution system for commodity delivery, for example, "Hitachi Review VO
L.57 NO.6 "and the like.

[0005]

According to the prior art of arranging inventory based on the turnover rate of the above-mentioned products, if the period from the date of manufacture to the delivery date is set as a freshness constraint for each product,
When strictly restricted products are arranged from a factory to a base requiring a long delivery time, there is a problem that it may become impossible to deliver highly fresh products to a destination by a delivery date. In general, products with strict freshness constraints have a lead time to the destination (hereinafter referred to as LT).
It is necessary to have a short delivery form and inventory arrangement. Also,
When considering service to customers, a product supplier is required to deliver highly fresh products to all delivery destinations.

Accordingly, an object of the present invention is to solve the problems of the prior art and to provide an inventory allocation method using freshness information capable of satisfying the above-mentioned requirements, that is, the same method without uneven distribution by delivery destination. Uses freshness information that can determine the delivery form and inventory position that can deliver products that meet the freshness constraints based on the freshness strategy. It is an object of the present invention to provide a method for allocating inventory and a method for determining a delivery form and an inventory position in a physical distribution system.

[0007]

According to the present invention, an object of the present invention is to provide a product based on an index based on a user's strategy in consideration of freshness and a turnover rate of a product under conditions satisfying a freshness constraint. This is achieved by determining the inventory placement of

[0008] That is, the object is to calculate a customer's delivery date of each product based on each order information and a delivery lead time to a delivery destination from a delivery lead time to a delivery destination in a product distribution system requiring freshness management, and to calculate a spare time before shipping. The allocation order is determined by sorting in ascending order, and the stock information by the date of manufacture of the corresponding product held in the storage device, and the freshness constraint information set as the period from the manufacture date to the delivery date for each product And by
This is achieved by extracting available inventory for each order information and allocating inventory in ascending order of production date, and if there is no available inventory, allocate to production schedule information. .

In the above, the inventory to be allocated is
This is the inventory that satisfies the freshness constraint among all the inventory. This stock is called available stock. Here, the freshness constraint is set by the supplier based on the sales strategy for freshness and the expiration date of the product for each product, and after the product is manufactured, the product arrives at the destination customer. It is represented by the time to In addition, the order of allocation in the allocatable inventory is in the order of date of manufacture. In addition, if there is no available inventory, if the production schedule for the ordered product is confirmed within the shipping allowance time range (between the allocation date and the shipping date), the production schedule will be allocated, If there is no available production schedule, it is registered as production order information.

[0010] Another object of the present invention is to provide a distribution system for commodities requiring freshness management, in which the inventory of commodities is stored in multiple stages from the factory to the destination, and the delivery time from the factory to each of the bases having the inventory and the destination is determined. Extractable delivery modes and inventory positions are extracted from the freshness constraint information set for each product,
This is achieved by calculating an index obtained from the turnover rate and freshness constraint of the product and weight information set by the user for each of them, and determining the stock position and the delivery mode based on the index.

That is, the present invention calculates the LT from the factory to the delivery destination in each of the available delivery modes, and sets the delivery mode that enables the delivery of the product satisfying the freshness constraint as compared with the freshness constraint of the product. Is extracted. For products with loose freshness constraints and products with a high turnover rate, an index determined from the freshness constraints and the turnover rate is determined based on the idea that placing inventory at a base close to the destination can improve service to customers. In accordance with the index, the priority of the inventory arrangement determination is given for each product, and the delivery form in which the LT to the delivery destination in the set obtained in the above is short is preferentially selected from the highest priority order, Decide where to deploy.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a stock allocation method using freshness information according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a system configuration for realizing an inventory allocation method according to a first embodiment of the present invention, and FIGS. 2 to 8 show various databases (hereinafter referred to as databases) used in the system shown in FIG. FIG. 9 is a flowchart illustrating a processing operation of a stock allocation processing unit. In FIG. 1, 10
Is an inventory allocation processing unit, 20 is an input device, 30 is a storage device,
40 is an order information DB, 50 is a stock information DB, 60 is a freshness information DB, 70 is a delivery destination information DB, and 80 is a production schedule D
B and 90 are production order files, 100 is an allocation result file, and 110 is an order receiving system.

In the first embodiment of the present invention described below, a factory warehouse is provided adjacent to a production factory, and the factory warehouse holds inventory of all products, and provides It has a logistics form where products are shipped from the factory warehouse, and when order information is received online from each customer,
The company reserves product inventory.

As shown in FIG. 1, a system for executing the inventory allocation method according to the first embodiment of the present invention includes an inventory allocation processing section 10, an input device 20 connected to the inventory allocation processing section 10, It comprises a storage device 30 and an order receiving system 110 as an external device connected to the storage device 30. In the storage device 30, an order information DB 40, an inventory information DB 50, a freshness information DB 60, a delivery destination information DB 7
0, production schedule DB 80, production order file 90,
The allocation result file 100 is stored.

FIG. 2 shows an example of the data structure of the order information DB 40. The order information DB 40 has an order number 4
1, a delivery destination column 42, a product name column 43, a quantity column 44, and a delivery date column 45. The information in each column of the order information DB 40 is registered and updated based on the received information by the order receiving system 110 which is an external device in the system shown in FIG. Sorted by first name. FIG.
In the order information column 41 of the order information DB 40 shown in (1), an order number that is uniquely assigned to each item of order information is stored, and inventory allocation is performed in units of the order number. The delivery date column 45 stores a date for delivering the product to the ordering source.

FIG. 3 shows an example of the data structure of the stock information DB 50.
1, a product name column 52, a manufacturing date column 53, a stock amount column 54,
It is configured to include a reservable stock amount column 55. In the stock number column 51, a stock number uniquely assigned to each stock is provided.
A code is stored, and at this time, the stock number is given as a different stock even if the goods are the same for stocks with different production dates. The date of manufacture 53 stores the date and time when the product was manufactured.

FIG. 4 shows an example of the data structure of the freshness information DB 60. The freshness information DB 60 has a product name column 61.
And a freshness constraint information column 62. The information in the freshness constraint information column 62 is the maximum period from the date of manufacture for each product to the delivery of the product to the destination, and is set and held by the supplier based on the freshness strategy for each product. Things.

FIG. 5 shows an example of the data structure of the delivery destination information DB 70.
1 and a delivery LT column 72. Delivery LT
The column 72 stores the time required for the product to be shipped from the factory warehouse and delivered to the destination.

FIG. 6 shows an example of the data structure of the production schedule DB 80.
, A scheduled production date and time column 82, a production amount column 83, and an allocatable inventory amount column 84. Scheduled production date and time column 8
2 stores the planned production date of the product at the factory, the production volume column 83 stores the planned production amount of the sled product, and the available inventory column 84 stores the planned production Stores the stock amount that can be allocated in the future and has not been allocated at that time.

FIG. 7 shows an example of the data structure of the production order file 90. The production order file 90 includes a product name column 91, a production amount column 92, and a delivery date column 93. The product name column 91 stores the name of the missing product, the production amount column 92 stores the quantity of the missing item, and the delivery date column 93 stores the delivery LT from the delivery date of the unreservable order information.
Is stored.

FIG. 8 shows an example of the data structure of the allocation result file 100. The allocation result file 100 includes a delivery destination column 101, a stock number column 102, a product name column 103, a shipping amount column 104, and a shipping date column 105. And is provided.
In each of these columns 101 to 105, the delivery destination, stock number, product name, shipping amount, and shipping date of the stock allocated based on the order information are written.

In the system shown in FIG. 1, the inventory allocation processing section 10 receives the allocation start instruction from the input device 20, and receives the delivery date in the delivery date column 45 and the delivery destination information DB 70 for each order information for each product in the order information DB 40. The shipping margin time is calculated based on the information in the delivery LT column 72, and the stock allocation order is determined. Next, the inventory allocation processing unit 10 extracts available inventory for each order information based on the delivery date in the delivery date column 45 and the information in the freshness constraint column 62 of the freshness information DB 60, and allocates the inventory. And assign the allocation result to allocation result file 1
Write to 00. This allocation result file 100 is shown in FIG.
Although it is not shown in the figure, it can be used by a shipping information output system as an external device, a distribution device work instruction system, or the like.

Next, the processing operation of the stock allocation processing unit 10 will be described in detail with reference to the flow shown in FIG.

(1) After an allocation start instruction is input from the input device 20, order information is extracted for each product from the product order information DB 40 (step 900).

(2) For the extracted order information, for each order number in the order number column 41, the information in the delivery LT column 72 of the destination information DB 70 is referenced using the destination in the destination column 42 as a key. Then, the spare shipping time is calculated by the formula (1) as follows: spare shipping time = (delivery date−provision date) −delivery LT (1) (step 901).

(3) All orders NO for the same product
With respect to the order number stored in the column 41, the shipping allowance time is calculated as described above, sorted in ascending order of the shipping allowance time, and the allocation order is determined. Then, the sorted orders N
The stock is allocated in O order (step 902).

(4) Next, the order item name column 43 to be allocated
With reference to the freshness information DB 60, referring to the freshness constraint 62 of the corresponding product using the product name as the key, the earliest available manufacturing date for each order NO is obtained by equation (2), and the earliest available manufacturing date = delivery date−freshness Constraint Calculated as (2) The earliest available production date is
Indicates the oldest manufacturing date that satisfies the freshness constraint, and indicates that those manufactured before this date are not to be allocated (steps 903 and 904).

(5) The production date in the production date column 53 of the product to be allocated in stock in the inventory information DB 50 is compared with the earliest available production date obtained in step 903, and the production date is calculated. 53> The earliest available production date ... Check if there is a stock that satisfies (3), and use formula (3)
If there is a stock of ordered products that satisfy the condition, the products extracted as available stock are sorted in ascending order of production date (steps 905 and 906).

(6) As a result of the sorting, inventory is allocated in ascending order of date of manufacture, and the available inventory amount column 55 of the inventory information DB 50 is updated. In addition, the allocation result file 100
Delivery destination field 101, stock number field 102, and product name field 10
3. Write necessary information in the shipping amount column 104 and the shipping date column 105. In this case, the shipping date is calculated from the delivery date of the order information and the delivery LT (steps 907 and 908).

(7) If it is determined in step 905 that there is no available inventory, the production schedule DB 80 is referred to by referring to the production schedule DB 80 using the product name as a key, and Date / time <delivery time−delivery LT... (4) It is checked whether or not there is a planned inventory that satisfies the expression (4) shown as: (4) If such a planned inventory exists, the production schedule is extracted. The products are sorted in ascending order of the scheduled production date and time, the products are allocated in the sorted order, and the contents of the allocatable amount column 84 are updated (steps 911 to 9).
13).

(8) In step 911, equation (4)
If there is no planned stock with a production schedule that satisfies the conditions, the product name, the number of products, and the production delivery date are written in the columns 91 to 93 of the production order file 90 (step 914).

(9) After the processing of steps 908, 913, and 914 is completed, it is checked whether or not the inventory allocation for all the order information for the product has been completed. If not, the processing from step 903 is performed. Run repeatedly,
If inventory allocation has been completed for all order information for the product, it is checked whether inventory allocation has been completed for all ordered products, and if not, the process from step 900 on the next product is performed. The process is repeatedly performed, and if the inventory allocation for all the ordered products has been completed, the process ends (steps 909 and 910).

FIG. 10 is a diagram showing a physical distribution form having stock in two stages for explaining the second embodiment of the present invention, and FIG. 11 is a diagram showing a delivery form and inventory arrangement of each product according to the second embodiment of the present invention. 12 to 18 are diagrams showing configuration examples of various databases, tables and files used in the system shown in FIG. 11, and FIG. 19 is created in the course of processing. FIG. 20 is a diagram showing a configuration example of a possible delivery form set file, FIG. 20 is a flowchart for explaining a processing operation of a stock arrangement determination processing unit for determining a delivery form and a stock position for each product, and FIG. 21 is a final delivery form and stock It is a flowchart which shows the detail of a process which determines a position. 10 and 11, 400 is a factory warehouse, 410 is a district depot, 500 is a stock placement determination processing unit, 510 is an input device, 520 is a storage device, 530 is a product information DB, 540 is a delivery destination LT table 550, and 550.
Is a delivery form table, 560 is a delivery LT table between bases, 570 is a stock information DB by product, 580 is a volume DB by base, and 590 is an output file.

As shown in FIG. 10, the second embodiment of the present invention has a logistic form in which inventory is stored in two stages, a factory warehouse 400 adjacent to a production factory and a district depot 410. The present invention is applied to a logistics system in which there are two types of delivery, that is, the inventory is stored in the factory warehouse 400 and sent directly to the destination, and the inventory is held in the regional depot 410 and delivered to the destination. Thus, the delivery form and inventory arrangement of each product are determined.

The system for deciding the delivery form and the stock placement according to the second embodiment of the present invention shown in FIG. 11 includes an input device 510, a stock placement determination processing section 500, and a storage device 520.
Consists of In the storage device 520, a product information DB 530, a delivery destination delivery LT table 540, a delivery form table 550, an inter-base delivery LT table 560,
A stock information DB 570 for each product, a volume DB 580 for each base, and an output file 590 are stored.

FIG. 12 shows an example of the configuration of the product information DB 530. The product information DB 530 has a product name column 531.
And a freshness constraint column 532 and a delivery destination column 533. The product name column 531 stores the product name of a product group whose inventory position is to be determined.
Necessary information is stored in the freshness constraint column 532 and the delivery destination column 533. The delivery destination column 533 stores a delivery destination group to which the corresponding product is delivered.

FIG. 13 shows an example of the structure of the delivery destination LT table 540.
“0” stores a delivery LT when the product is directly sent from each base to all delivery destinations. Therefore, in the case of the second embodiment of the present invention, the delivery LT when directly sent from the factory warehouse 400 to each delivery destination, and the delivery L from the district depot 410 to each delivery destination.
T is stored.

FIG. 14 shows an example of the configuration of the delivery mode table 550. The delivery mode table 550 stores delivery modes that can be adopted in the physical distribution mode of the user who is the supplier of the product. 551, a stock position column 552, and a via base column 553.
The stock position in the stock position column 552 indicates the name of the base that holds the inventory in the corresponding delivery mode, and the transit base in the transit base column 553 indicates the name of the base that passes from the factory to the delivery destination. Each delivery mode has a unique delivery mode N
O is added and stored in the delivery form NO column 551. In the case of the example shown in FIG. 10, a delivery form in which inventory is held in a factory warehouse and delivered to a delivery destination, and a delivery form in which a factory is delivered to a district depot, has inventory in the district depot, and delivers from the district depot to each delivery destination. Are given.

FIG. 15 shows an example of the configuration of the inter-base delivery LT table 560.
0 indicates the delivery LT between each base, that is, between the factory warehouse and the district depot.

FIG. 16 shows a configuration example of the product-specific inventory information DB 570. The product-specific inventory information DB 570 includes a product name column 571, a turnover rank column 572, and a stock volume 5
73. The information in the turnover rank column 572 is a rank assigned to the inventory turnover of the target product in the product name column 571, and the higher the turnover, the higher the rank. The stock volume column 573 stores the stock volume of the stock amount to be held for each product.

FIG. 17 shows an example of the configuration of the site-specific volume DB 580.
81 and a volume column 582, and a volume column 582
Stores the volume limit of each site.

FIG. 18 shows an example of the configuration of an output file 590. This output file 590 is stored in a product name column 591.
, Delivery form NO column 592, and inventory location base name column 593
And stores the delivery mode number and the name of the stock placement base determined for each product shown in the product name column 591.

FIG. 19 shows an example of the configuration of a possible delivery mode set file 600 created during the processing. The possible delivery mode set file 600 includes a product name column 601 and
It comprises a delivery number column 602, a maximum destination LT column 603, and a priority order column 604.

Next, with reference to the flow charts shown in FIGS. 20 and 21, the details of the processing operation of the inventory arrangement determination processing section 500 will be described.

(1) The merchandise is selected from the merchandise information DB 530, the delivery destination column 533 is referred to, and the delivery LT from the delivery destination delivery LT table 540 to the farthest delivery destination from each base is obtained. Is extracted as the maximum delivery destination LT of the product (steps 200 and 201).

(2) For all the delivery modes NO in the delivery mode table 550, the delivery LT between the passing bases is referred to the delivery LT table 560 between the bases, and from the factory to the delivery destination by the formula (5), The total delivery LT is calculated as follows: total delivery LT = total of delivery LTs between transit points + maximum delivery destination LT (5). At this time, the step up to the delivery destination is the LT from the last base to the destination to the farthest destination.
01 is used (step 20).
2).

(3) The total delivery LT of each delivery mode is compared with the freshness constraint of the corresponding product, and the product satisfying the expression (6) expressed by the total delivery LT <freshness constraint is determined as the corresponding product. Possible delivery form set file 600 as possible delivery form set
In the delivery form number column 602 and the maximum delivery destination LT column 603 of the delivery form number. Here, a delivery mode that does not satisfy Expression (6) indicates that delivery that satisfies the freshness constraint set for the corresponding product is impossible (step 20).
3, 204).

(4) Next, a possible delivery form set file 6
The maximum delivery destinations LT in the maximum delivery destination LT column 603 of 00 are sorted in ascending order, and priorities are assigned in the priority order column 604 in the order of the sorting result. The above processing is performed for all products (step 205).

(5) Next, for each product, a judgment index is calculated by the equation (7) using the freshness weight and the rotation rate weight input by the user. Judgment index = freshness constraint × freshness weight + rotation rate Rank × rotation rate weight Calculated as (7). The freshness weight and the turnover weight are
This value is input in advance by the user from the input device 510, and is a value indicating how much importance is placed on each of the freshness and the turnover rate of the product when determining the delivery mode and the stock position (step). 206).

(6) It is checked whether a possible delivery set has been derived for all the products and the judgment index has been calculated. If the judgment index has not been calculated for all the products, step 20 is executed.
The process is repeated from 0 to calculate the determination indices for all the products, and then the products are sorted in descending order of the determination indices, and the delivery mode and the stock position of the products are determined in the sorted order (steps 207 to 207). 209).

Next, the detailed processing of step 209 will be described with reference to FIG.
This will be described with reference to the flow shown in FIG.

(6) The highest priority (N = 1) delivery mode in the priority order column 604 of the possible delivery mode set for each product described with reference to FIG. 19 is selected, and the inventory location base of the selected delivery mode is selected. The remaining stock volume is compared with the stock volume of the corresponding product in the product-specific stock information DB 570 (step 210,
211).

(7) If the result of the comparison in step 211 is that the former is larger, that is, if the remaining stock volume is larger than the stock volume of the corresponding product, the stock can be placed at the stock placement base in the selected delivery mode. And output file 5
The information is written in the merchandise name column 591 and the delivery number column 592 of 90, and the remaining stock volume at the corresponding base is updated (steps 213 and 214).

(8) As a result of the comparison in step 211, if the former is smaller, that is, if the remaining stock volume is smaller than the stock volume of the corresponding product, the stock placement at the stock placement base by the selected delivery mode is not possible. If it is possible, it is checked whether or not the delivery mode can be adopted for lowering the priority by one (step 210). This is based on the idea that a product with a high turnover rate and a product with a loose freshness constraint have inventory at a base where the LT to the delivery destination is short, and respond flexibly to services to customers. If adoption is not possible, the priority is reduced by 1 (N = N + 1), and the process returns to step 211 (step 212).

The flow of FIG. 21 showing the details of the processing for determining the final delivery mode and the stock position described above is based on the case where only the stock volume limit of each base is considered as a constraint on the availability of the corresponding delivery mode. As an example, the present invention may consider other restrictions such as the loading efficiency of the delivery and the cost when determining the final delivery mode.

Although the above-described second embodiment of the present invention has been described on the assumption that goods are stocked in two stages, namely, a factory warehouse and a regional depot, the present invention is directed to a distribution system in which goods are stocked in more stages. It can also be applied to systems.

[0058]

As described above, according to the present invention, in the distribution of goods requiring freshness management, the freshness constraint set by the supplier for all the destinations in consideration of the delivery LT to the destination. It is possible to carry out inventory allocation based on the.
Further, in a logistics form in which inventory is held in multiple stages, it is possible to arrange inventory for each product so that sales opportunities are not missed due to freshness constraints for each product.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration for realizing a stock allocation method according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of an order information DB 40.

FIG. 3 is a diagram showing a configuration of an inventory DB 50.

FIG. 4 is a diagram showing a configuration example of a freshness information DB 60.

FIG. 5 is a diagram showing a configuration example of a delivery destination information DB 70.

FIG. 6 is a diagram illustrating a configuration example of a production schedule DB 80;

FIG. 7 is a diagram showing a configuration example of a production order file 90.

FIG. 8 is a diagram showing a configuration example of an allocation result file 100.

FIG. 9 is a flowchart illustrating a processing operation of a stock allocation processing unit.

FIG. 10 is a diagram showing a physical distribution mode having stocks in two stages for explaining a second embodiment of the present invention.

FIG. 11 is a block diagram showing a system configuration for implementing a method of determining a delivery mode and a stock arrangement of each product according to a second embodiment of the present invention.

FIG. 12 is a diagram illustrating a configuration example of a product information DB 530.

FIG. 13 is a diagram showing a configuration example of a delivery destination LT table 540.

FIG. 14 is a diagram showing a configuration example of a delivery mode table 550.

FIG. 15 is a diagram illustrating a configuration example of an inter-base delivery LT table 560.

FIG. 16 is a diagram illustrating a configuration example of a product-specific inventory information DB 570.

FIG. 17 is a diagram illustrating a configuration example of a site-specific volume DB 580.

FIG. 18 is a diagram illustrating a configuration example of an output result file 590.

FIG. 19 is a diagram showing a configuration example of a possible delivery mode set file created in the course of processing.

FIG. 20 is a flowchart illustrating a processing operation of a stock placement determination processing unit that determines a delivery mode and a stock position for each product.

FIG. 21 is a flowchart illustrating details of a process for determining a final delivery mode and a stock position.

[Explanation of symbols]

 Reference Signs List 10 stock allocation processing unit 20, 510 input device 30, 520 storage device 40 order information DB 50 inventory information DB 60 freshness information DB 70 delivery destination information DB 80 production schedule DB 90 production order file 100 allocation result file 110 order system 400 factory warehouse 410 District depot 500 Inventory arrangement determination processing section 530 Product information DB 540 Delivery LT table 550 Delivery form table 560 Inter-base delivery LT table 570 Inventory information DB by product 580 Volume DB by location 590 Output file

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Shibata 3-2-1-16 Omorikita, Ota-ku, Tokyo Inside Hitachi System Engineering Co., Ltd. (72) Inventor Tomoo Shimano 2-chome Kagahara, Tsuzuki-ku, Yokohama, Kanagawa Prefecture Hitachi, Ltd. Business System Development Center

Claims (3)

[Claims] In a method for allocating inventory in a physical distribution system for a product requiring freshness management, a spare time until shipping is calculated from a customer delivery date of the product according to each order information and a delivery lead time to a destination, and the spare time is calculated. The allocation order is determined by sorting in ascending order, and the stock information by the date of manufacture of the corresponding product held in the storage device, and the freshness constraint information set as the period from the manufacture date to the delivery date for each product And by
It is characterized by extracting available inventory for each order information and executing inventory allocation in the order of production date from oldest. If there is no available inventory, allocation to production schedule information is performed. Inventory allocation method in distribution system. 2. A method for deciding a delivery form and a stock position in a distribution system of a product requiring freshness management, wherein the freshness constraint holds a stock of the product in multiple stages from a factory to a delivery destination and is held in a storage device. A method for determining a delivery form and a stock position in a distribution system, wherein the delivery form and the stock position of the goods are determined from the information and the turnover rate of the goods. 3. A method for deciding a delivery form and a stock position in a distribution system for a product requiring freshness management, wherein the stock of the product is stored in multiple stages from the factory to the delivery destination, and each of the bases having the stock from the factory and the delivery. The available delivery form and stock position are extracted from the previous delivery time and the freshness constraint information set for each product, and the turnover rate of the product, the freshness constraint, and weight information set by the user for each, A method for determining a delivery form and a stock position in a physical distribution system, comprising calculating an index obtained from the above, and determining a stock position and a delivery form based on the index.