Carbon dioxide emission calculation system, method, and program

Abstract

The present invention provides a carbon dioxide emission calculation system, method, and program that can more accurately determine CO2 emissions even when a product is manufactured over multiple periods. [Solution] The carbon dioxide emission calculation system of the present invention is a system for calculating the CO2 emissions of products up to a target period in a factory capable of manufacturing multiple types of products that are manufactured and shipped from raw materials through multiple processes. The system calculates the CO2 emissions of a product up to the target period by totaling the CO2 emissions of the processes performed on that product during the target period for each of the multiple different types of products, and then calculates the CO2 emissions of the product up to the target period based on the sum of the CO2 emissions of the product up to the target period and the CO2 emissions of the product up to the target period for the period prior to the target period.

Description

Technical Field

[0001] The present invention relates to a carbon dioxide emission calculation system, a carbon dioxide emission calculation method, and a carbon dioxide emission calculation program for obtaining the carbon dioxide emissions of products manufactured through a plurality of processes.

Background Art

[0002] In recent years, from the perspective of environmental conservation of the earth and the like, attention has been paid to the carbon dioxide emissions (carbon dioxide emissions, CO2 emissions). Technologies related to such carbon dioxide emissions are disclosed, for example, in Patent Document 1. This Patent Document 1 discloses a carbon dioxide emission calculation system for obtaining the CO2 emissions related to target products of a target type manufactured in a factory capable of manufacturing products through a plurality of processes in a predetermined period.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The carbon dioxide emission calculation system disclosed in Patent Document 1 can determine the CO2 emissions for a target product of a target type manufactured during a predetermined period. That is, the carbon dioxide emission calculation system disclosed in Patent Document 1 can determine the CO2 emissions when multiple processes for manufacturing the product are included in the predetermined period. However, some products are manufactured over multiple periods, and in such cases, the product may be an unfinished product (semi-finished product) that is not completed at the end of the target period (the current period) for which CO2 emissions are calculated, which may degrade the accuracy of the CO2 emissions. Alternatively, in the above case, if the manufacturing of the product that was unfinished at the beginning of the current period is advanced and completed during the current period, the accuracy of the CO2 emissions may degrade. In particular, if the processing volume and processing time of each piece of equipment that performs each process, as well as the unit CO2 emissions, differ from period to period, the accuracy of the CO2 emissions will degrade if the calculation is performed under the assumption that these are the same in each period.

[0005] This invention was made in view of the above circumstances, and its purpose is to provide a carbon dioxide emission calculation system, a carbon dioxide emission calculation method, and a carbon dioxide emission calculation program that can determine CO2 emissions with greater accuracy even when a product is manufactured over multiple periods. [Means for solving the problem]

[0006] As a result of various studies, the inventors have found that the above objective can be achieved by the present invention as follows. That is, a carbon dioxide emission calculation system according to one aspect of the present invention is a system for calculating the CO2 emissions of products up to a target period among several different periods in a factory capable of manufacturing products of several types that are manufactured and shipped from raw materials through several processes, and comprises: a total product emission information storage unit that stores total product emission information representing the CO2 emissions of each product during each of the several periods; an emission calculation unit that calculates the CO2 emissions of each product during the target period by totaling the CO2 emissions of the processes performed on each product during the target period for each of the several different products; an update processing unit that updates the total product emission information by storing the CO2 emissions of each product during the target period, calculated by the emission calculation unit for each of the several products, in the total product emission information storage unit; and a product emission calculation unit that calculates the CO2 emissions of each product up to the target period based on the total CO2 emissions of the product during the target period stored in the total product emission information storage unit and the CO2 emissions of the product during the period prior to the target period for each of the several products. Preferably, the carbon dioxide emission calculation system further includes a unit emission information storage unit that stores unit CO2 emission information representing process unit CO2 emission, which is the CO2 emission per unit processing amount of the process. The emission calculation unit calculates the process CO2 emission for each of the plurality of products by multiplying the processing amount of the process performed on that product during the target period by the process unit CO2 emission and summing the results of the multiplications obtained. Based on the calculated process CO2 emission for the product during the target period, the CO2 emission for the product during the target period is calculated.

[0007] Such a carbon dioxide emission calculation system calculates the CO2 emissions of a product during a target period by totaling the CO2 emissions of processes performed on the product during that period. Since it does not include CO2 emissions from processes performed outside the target period, it can calculate the CO2 emissions of a product during a target period with greater accuracy, even when the product is manufactured over multiple periods. The carbon dioxide emission calculation system stores emission information for all products, updates the emission information for all products with the more accurately calculated CO2 emissions of the product during the target period, and calculates the CO2 emissions of the product up to the target period based on the sum of the CO2 emissions of the product during the target period and the CO2 emissions of the product in periods prior to the target period. Therefore, it can calculate the CO2 emissions of the product up to the target period with greater accuracy.

[0008] In another embodiment, the carbon dioxide emission calculation system described above further includes a performance information storage unit that stores, for each of the plurality of products, product performance information representing the type of raw materials used in the manufacture of the product, the amount of raw materials used in the manufacture of the product, the plurality of processes carried out in the manufacture of the product, the processing volume of each of the plurality of processes carried out in the manufacture of the product, the completion date of each of the plurality of processes carried out in the manufacture of the product, the transportation distance or transportation volume to the destination of the product, and the completion date of shipment of the product, as well as common total CO2 emission information representing all common total CO2 emissions that occurred in common during each of the plurality of periods, and a unit emission information storage unit that stores unit CO2 emission information representing the raw material unit CO2 emission, which is the CO2 emission per unit amount of the raw materials, the process unit CO2 emission, which is the CO2 emission per unit processing volume of the process, and the transportation unit CO2 emission, which is the CO2 emission per unit distance of the transportation distance or the CO2 emission per unit transportation volume of the transportation volume, and the emission calculation unit stores, for each of the plurality of products, product performance information representing the type of raw materials used in the manufacture of the product, the amount of raw materials used in the manufacture of the product, the plurality of processes carried out in the target period The update processing unit comprises: a product process emission calculation unit that calculates the process CO2 emissions of the product during the target period by multiplying the processing volume of the process by the CO2 emissions per process unit and summing the results of the multiplications; a product raw material emission calculation unit that calculates the raw material CO2 emissions of the product during the target period by multiplying the amount of raw materials of the product by the CO2 emissions per raw material unit for each of the multiple products if the completion date of the first process of the product falls within the target period; a product transport emission calculation unit that calculates the transport CO2 emissions of the product during the target period by multiplying the transport distance or transport volume to the destination of the product by the CO2 emissions per transport unit for each of the multiple products if the completion date of shipment falls within the target period for the product; and a product common emission calculation unit that calculates the common CO2 emissions of the product during the target period by multiplying the total common CO2 emissions for the period for each of the multiple products by a predetermined percentage, and the update processing unit calculates the process CO2 emissions of the product during the target period obtained for each of the multiple products by the emission calculation unit,The CO2 emissions of a product during the target period are determined by totaling the CO2 emissions from raw materials, CO2 emissions from product transportation, and common CO2 emissions from the product. The total product emission information is then updated by storing the CO2 emissions for each of the multiple products during the target period in the total product emission information storage unit.

[0009] In another embodiment, the carbon dioxide emission calculation system described above further includes a performance information storage unit that stores, for each of the plurality of products, product performance information representing the type of raw materials used in the manufacture of the product, the amount of raw materials used in the manufacture of the product, the plurality of processes carried out in the manufacture of the product, the processing volume of each of the plurality of processes carried out in the manufacture of the product, the completion date of each of the plurality of processes carried out in the manufacture of the product, the transportation distance or transportation volume to the destination of the product, and the completion date of shipment of the product, as well as common total CO2 emission information representing all common total CO2 emissions for each of the plurality of periods, and a unit emission information storage unit that stores unit CO2 emission information representing the raw material unit CO2 emission, which is the CO2 emission per unit amount of the raw materials, the process unit CO2 emission, which is the CO2 emission per unit processing volume of the process, and the transportation unit CO2 emission, which is the CO2 emission per unit distance of the transportation distance or the CO2 emission per unit transportation volume of the transportation volume, and the emission calculation unit stores, for each of the plurality of products, product performance information representing the actual total CO2 emissions for each of the plurality of products during the target period. The total product emission information storage unit stores product process emission information representing product process CO2 emissions for each product during the target period, by multiplying the processing volume of each process by the CO2 emissions per process unit and summing the results of the multiplications; the product raw material emission calculation unit calculates the raw material CO2 emissions for each of the multiple products during the target period by multiplying the amount of raw materials for the product by the CO2 emissions per raw material unit, if the completion date of the first process for that product falls within the target period; the product transport emission calculation unit calculates the transport CO2 emissions for each of the multiple products during the target period by multiplying the transport distance or transport volume to the destination by the CO2 emissions per transport unit, if the shipment completion date for that product falls within the target period; and the product common emission calculation unit calculates the common CO2 emissions for each of the multiple products during the target period by multiplying the total common CO2 emissions for that period by a predetermined percentage.The update processing unit further stores product raw material emission information representing the CO2 emissions of each raw material for each product during the period, product transport emission information representing the CO2 emissions of each transport for each product during the period, and product common emission information representing the CO2 emissions of each product during the period. The update processing unit further stores the CO2 emissions of each process, each raw material, each transport, and each common CO2 emissions for each product, which have been determined by the emission calculation unit for each of the multiple products during the target period, in the total product emission information storage unit, thereby storing product process emission information, product raw material The product emission calculation unit updates the material emission information, product transport emission information, and common product emission information, and for each of the multiple products, it calculates the CO2 emissions of the product up to the target period by summing the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions of the product for the target period stored in the all-product emission information storage unit, along with the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions of the product for the period prior to the target period.

[0010] These carbon dioxide emission calculation systems store product performance information, common total CO2 emission information, and unit CO2 emission information, so they can determine the CO2 emissions for each product. Therefore, for products that are manufactured from raw materials through multiple processes and then shipped, the CO2 emissions of the products up to the aforementioned period can be determined.

[0011] In another embodiment, in the carbon dioxide emission calculation system described above, the predetermined ratio is the ratio of the product processing volume to the total product processing volume during the target period, the product processing volume is a first total metered amount obtained by summing up the processing volumes of the processes performed on the product during the target period, and the total product processing volume is a second total metered amount obtained by summing up the first total metered amounts obtained for each of the plurality of products.

[0012] Such a carbon dioxide emission calculation system can allocate the common CO2 emissions of a product to a product based on the ratio of the product's processing volume to the total product processing volume during the target period.

[0013] In another embodiment, in the carbon dioxide emission calculation system described above, the predetermined ratio is the ratio of product emissions to total product emissions during the target period, the product emissions are a first total emissions obtained by summing the process CO2 emissions of the product, the raw material CO2 emissions of the product, and the transport CO2 emissions of the product during the target period, and the total product emissions are a second total emissions obtained by summing the first total emissions obtained for each of the plurality of products.

[0014] Such a carbon dioxide emission calculation system can allocate the common CO2 emissions of a product to the product as a percentage of the total product emissions during the period in question.

[0015] Another embodiment of the present invention relates to a carbon dioxide emission calculation method, which is a method for calculating the CO2 emissions of products up to a target period among several different periods in a factory capable of manufacturing and shipping products of several types, which are manufactured from raw materials through several processes, and comprises: an emission calculation step for each of several different types of products, which calculates the CO2 emissions of the products up to the target period by totaling the CO2 emissions of the processes performed on the product during the target period; an update processing step for updating the total product emission information in a total product emission information storage unit that stores total product emission information representing the CO2 emissions of each product during the target period, which is calculated for each of the several products in the emission calculation step; and a product emission calculation step for each of the several products, which calculates the CO2 emissions of the product up to the target period based on the total CO2 emissions of the product during the target period stored in the total product emission information storage unit and the CO2 emissions of the product in the period prior to the target period.

[0016] This carbon dioxide emission calculation method determines the CO2 emissions of a product during a target period by totaling the CO2 emissions of processes performed on the product during that period. Since it does not include CO2 emissions from processes performed outside the target period, it can determine the CO2 emissions of a product during a target period with greater accuracy, even when the product is manufactured over multiple periods. The above carbon dioxide emission calculation method stores the emission information for all products, updates the emission information for all products with the CO2 emissions of the product during the target period determined with greater accuracy, and determines the CO2 emissions of the product up to the target period based on the sum of the CO2 emissions of the product during the target period and the CO2 emissions of the product in periods prior to the target period. Therefore, it can determine the CO2 emissions of the product up to the target period with greater accuracy.

[0017] Another embodiment of the present invention is a carbon dioxide emission calculation program that calculates the CO2 emissions of products up to a target period among several different periods in a factory capable of manufacturing and shipping products of multiple types, which are manufactured from raw materials through multiple processes, and is a program that causes a computer to function as the carbon dioxide emission calculation system described in any of the above.

[0018] According to this, a carbon dioxide emission calculation program can be provided, and this carbon dioxide emission calculation program will have the same effects as the carbon dioxide emission calculation systems described above. [Effects of the Invention]

[0019] The carbon dioxide emission calculation system, carbon dioxide emission calculation method, and carbon dioxide emission calculation program according to the present invention can determine CO2 emissions with greater accuracy, even when a product is manufactured over multiple periods. [Brief explanation of the drawing]

[0020] [Figure 1] This figure shows the configuration of the carbon dioxide emission calculation system in the embodiment. [Figure 2] As an example, it is a diagram showing process shipment performance information table. [Figure 3] As an example, for each product, it is a time chart of manufacturing process performance information showing the completion date of each process (each equipment) of each process in chronological order. [Figure 4] As an example, it is a diagram showing raw material transportation performance information table. [Figure 5] As an example, it is a diagram showing common total CO2 emission amount information for each period. [Figure 6] As an example, it is a diagram showing work-in-process information table. [Figure 7] As an example, it is a diagram showing CO2 emission amount information table per process unit. [Figure 8] As an example, it is a diagram showing CO2 emission amount information table per raw material unit. [Figure 9] As an example, it is a diagram showing CO2 emission amount information table per transportation unit. [Figure 10] As an example, it is a diagram showing CO2 emission amount information table of all products. [Figure 11] As an example, for the product with product name; "P001", it is a diagram for explaining each calculation method of the CO2 emission amount of the product, the raw material CO2 emission amount of the product in the target period, and the transportation CO2 emission amount of the product in the target period respectively in the target period. [Figure 12] As an example, for the product with product name; "P030", it is a diagram for explaining each calculation method of the CO2 emission amount of the product, the raw material CO2 emission amount of the product in the target period, and the transportation CO2 emission amount of the product in the target period respectively in the target period. [Figure 13] As an example, for the product with product name; "P051", it is a diagram for explaining each calculation method of the CO2 emission amount of the product, the raw material CO2 emission amount of the product in the target period, and the transportation CO2 emission amount of the product in the target period respectively in the target period. [Figure 14]As an example, this diagram illustrates the calculation methods for the CO2 emissions of the product, the CO2 emissions of the raw materials for the product, and the CO2 emissions of the transport of the product during the target period, for a product named "P060". [Figure 15] As an example, this diagram illustrates how to calculate the common CO2 emissions of a product based on its processing volume. [Figure 16] To include the operation of the carbon dioxide emission calculation system. [Figure 17] As an example, this diagram illustrates how to calculate the common CO2 emissions of a product based on its emission ratio. [Figure 18] As an example, the diagram shows a process CO2 emission information table and a raw material CO2 emission information table. [Figure 19] As an example, the figures show a transport CO2 emission information table and a common CO2 emission information table. [Modes for carrying out the invention]

[0021] Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the disclosed embodiments. In each figure, components denoted by the same reference numerals are identified as identical components, and their descriptions are omitted where appropriate. In this specification, general reference numerals are used without subscripts, while individual components are indicated by subscripts.

[0022] The carbon dioxide emission calculation system in this embodiment is a system that calculates the carbon dioxide emissions (CO2 emissions) of products up to a target period in a factory capable of manufacturing multiple types of products that are produced and shipped from raw materials through multiple processes. The target period is one of several sequentially consecutive and distinct periods. The carbon dioxide emission calculation system comprises a total product emission information storage unit, an emission calculation unit, an update processing unit, and a product emission calculation unit. The emission calculation unit calculates the CO2 emissions of each of the multiple different types of products during the target period by summing the CO2 emissions of the processes performed on that product during the target period. The update processing unit updates the total product emission information by storing the CO2 emissions of each product during the target period, which have been calculated by the emission calculation unit for each of the multiple products, in the total product emission information storage unit. The product emission calculation unit calculates the CO2 emissions of each of the multiple products up to the target period based on the sum of the CO2 emissions of the product during the target period stored in the total product emission information storage unit and the CO2 emissions of the product in the period prior to the target period.

[0023] The following provides a more detailed explanation of such a carbon dioxide emission calculation system, as well as the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein. Here, as an example, we will use a factory (plant) capable of manufacturing various types of rolled steel sheets, but the factory (plant) can be any type as long as it has multiple pieces of equipment and is capable of manufacturing and shipping products of multiple types, which are produced from raw materials through multiple processes. The carbon dioxide emission calculation system may be configured by connecting an input / output terminal device for inputting and outputting data, one or more processing units (e.g., a server device) that perform various calculation processes, and one or more database devices that store (manage) various data in a way that allows them to communicate with each other. At least some of these input / output terminal devices, one or more processing units, and one or more database devices may be configured as a single unit and connected to the rest in a way that allows them to communicate with each other, but here we will explain the carbon dioxide emission calculation system using a carbon dioxide emission calculation device that integrates all of these components as an example.

[0024] Figure 1 shows the configuration of a carbon dioxide emission calculation system (a carbon dioxide emission calculation device as an example) in an embodiment. Figure 2 shows a process shipment performance information table as an example. Figure 2A shows process shipment performance information table PT-1 for product name "P001", Figure 2B shows process shipment performance information table PT-30 for product name "P030", Figure 2C shows process shipment performance information table PT-51 for product name "P051", and Figure 2D shows process shipment performance information table PT-60 for product name "P060". Figure 3 is a time chart of manufacturing process performance information, showing the completion date of each process (each piece of equipment) in chronological order for each product as an example. In Figure 3, each process (each piece of equipment) is shown by its name in the vertical direction of the page, and the time axis is shown in the horizontal direction of the page. Figure 4 shows a raw material transportation performance information table as an example. Figure 5 shows, as an example, the common total CO2 emission information for each period. Figure 6 shows, as an example, the work-in-progress process information table. Figure 7 shows, as an example, the process unit CO2 emission information table. Figure 8 shows, as an example, the raw material unit CO2 emission information table. Figure 9 shows, as an example, the transport unit CO2 emission information table. Figure 10 shows, as an example, the total product CO2 emission information table. Figure 10A shows the total product CO2 emission information table before the update process for the current period, and Figure 10B shows the total product CO2 emission information table after the update process for the current period. Figures 11 to 14 are diagrams illustrating, as examples, the calculation methods for the CO2 emissions of a product during the target period, the raw material CO2 emissions of the product during the target period, and the transport CO2 emissions of the product during the target period. Figure 10 shows the case of product name "P001", Figure 11 shows the case of product name "P030", Figure 12 shows the case of product name "P051", and Figure 13 shows the case of product name "P060". Figure 14 is a diagram illustrating, as an example, the calculation method for the common CO2 emissions of products determined by the ratio of processing volume.

[0025] The carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example) 1000 in this embodiment includes, for example, a control processing unit 1, an input unit 2, an output unit 3, an interface unit (IF unit) 4, and a storage unit 5, as shown in Figure 1.

[0026] The input unit 2 is connected to the control processing unit 1 and is a device that inputs various commands to the carbon dioxide emission calculation device 1000, such as a command to instruct the start of CO2 emission calculation, and various data necessary for operating the carbon dioxide emission calculation device 1000, such as the product manufacturing process and product manufacturing results. For example, it may be a keyboard, a mouse, or multiple input switches assigned to predetermined functions. The output unit 3 is connected to the control processing unit 1 and is a device that outputs commands, data, and calculation results input from the input unit 2 according to the control of the control processing unit 1. For example, it may be a display device such as a CRT display, LCD (liquid crystal display device), or organic EL display, or a printing device such as a printer.

[0027] The input unit 2 and output unit 3 may be configured as touch panels. In this configuration, the input unit 2 is a position input device that detects and inputs the operating position, such as a resistive or capacitive touch panel, and the output unit 3 is a display device. In this touch panel, a position input device is provided on the display surface of the display device, and one or more candidate input contents that can be input to the display device are displayed. When the user touches the display position that displays the input content they wish to input, the position input device detects that position, and the display content displayed at the detected position is input to the carbon dioxide emission calculation device 1000 as the user's operation input. With such a touch panel, the user can easily understand the input operation intuitively, thus providing a carbon dioxide emission calculation device 1000 that is easy for the user to use.

[0028] The IF unit 4 is connected to the control processing unit 1 and, in accordance with the control of the control processing unit 1, is a circuit that inputs and outputs data to and from external devices, for example. Examples include an RS-232C serial communication interface circuit, an interface circuit using the Bluetooth® standard, and an interface circuit using the USB standard. Alternatively, the IF unit 4 may be a communication interface circuit that sends and receives communication signals to and from external devices, such as a data communication card or a communication interface circuit conforming to the IEEE 802.11 standard.

[0029] The memory unit 5 is connected to the control processing unit 1 and is a circuit that stores various predetermined programs and various predetermined data in accordance with the control of the control processing unit 1.

[0030] The various predetermined programs mentioned above include, for example, a control processing program, which includes, for example, a control program, an emissions calculation program, an update processing program, and a product emissions calculation program. The control program is a program that controls each of the parts 2 to 5 of the carbon dioxide emissions calculation device 1000 according to the function of each part. The emissions calculation program is a program that determines the CO2 emissions of a product during the target period by totaling the CO2 emissions of the processes performed on that product during the target period for each of the multiple products of each type. The update processing program is a program that updates the total product emissions information by storing the CO2 emissions of each product during the target period, which were determined by the emissions calculation program for each of the multiple products, in the storage unit 5. The product emissions calculation program is a program that determines the CO2 emissions of a product up to the target period for each of the multiple products, based on the sum of the CO2 emissions of the product during the target period stored in the storage unit 5 and the CO2 emissions of the product in the period prior to the target period.

[0031] The aforementioned various predetermined data include, for example, actual data, unit emission data, total product emission data, various calculation results during the calculation process, and final calculation results, which are all data necessary for executing these programs.

[0032] Such a storage unit 5 may include, for example, a non-volatile memory element such as ROM (Read Only Memory) or a rewritable non-volatile memory element such as EEPROM (Electrically Erasable Programmable Read Only Memory). Furthermore, the storage unit 5 includes RAM (Random Access Memory) which serves as the working memory of the control processing unit 1, storing data generated during the execution of the predetermined program. The storage unit 5 may also be configured to include a hard disk drive or solid-state drive (SSD) with a relatively large storage capacity.

[0033] The memory unit 5 is functionally equipped with a performance information storage unit 51, a unit emission information storage unit 52, and a total product emission information storage unit 53, respectively, for storing performance information, unit emission information, and total product emission information.

[0034] The performance information storage unit 51 stores performance information. This performance information includes product performance information and common total CO2 emission information.

[0035] The aforementioned product performance information includes, for each of the multiple products, the type of raw materials used in the manufacture of the product, the quantity of raw materials used in the manufacture of the product, the multiple processes carried out in the manufacture of the product, the processing volume of each of the multiple processes carried out in the manufacture of the product, the completion date of each of the multiple processes carried out in the manufacture of the product, the transportation distance or volume to the destination of the product, and the completion date of the shipment of the product.

[0036] In this embodiment, the product performance information is stored in the performance information storage unit 51 in table format. The product performance information may be stored in the performance information storage unit 51 in a single table for each of the multiple products, but in this embodiment, it is stored in the performance information storage unit 51 in multiple tables, such as the process shipment performance information table PT and the raw material transport performance information table DT.

[0037] The process shipment performance information table PT is provided for each of the aforementioned products and is a table that registers the amount of raw materials used in the manufacture of the product, the multiple processes carried out in the manufacture of the product, the processing volume of each of the multiple processes carried out in the manufacture of the product, and the completion date of each of the multiple processes carried out in the manufacture of the product. The process shipment performance information table PT for the product is stored in the performance information storage unit 51 in association with the product identifier (product ID) of the product. This process shipment performance information table PT (PT-1, ..., PT-30, ..., PT-51, ..., PT-60, ...) includes, for example, as shown in Figure 2, a process number field 511 for registering the process number, an equipment name field 512 for registering the equipment name of the equipment that performs the process with the process number registered in the process number field 511, a processing volume field 513 for registering the processing volume of the process with the process number registered in the process number field 511, and a completion date field 514 for registering the completion date of the process with the process number registered in the process number field 511, and has a record for each process in the product. Shipment is considered one of the processes in the process shipment performance information table PT, and information regarding shipment is registered in the process shipment performance information table PT. To indicate that a record contains information about the aforementioned shipment, the equipment name field 512 is set to "Shipment," and in a record where "Shipment" is set to the equipment name field 512, the processing volume field 513 is set to the shipment volume, and the completion date field 514 is set to the shipment completion date. The shipment volume also represents the transport volume, and in this embodiment, since information about the shipment is registered in the process shipment performance information table PT, the transport volume (shipment volume) is registered in the process shipment performance information table PT.

[0038] The process number is a number that represents the order in which a process is performed in a plurality of processes carried out in the manufacturing of a product. In this embodiment, one process is carried out by one piece of equipment. As shown in Figure 2C, the same equipment may be used for multiple processes. The equipment name is an example of an identifier (equipment ID) for identifying and distinguishing equipment. The process volume is the amount processed in the execution of the process. The process volume is expressed in a predetermined unit that is set appropriately in advance, such as weight (processing weight, e.g., tons or kilograms) or time (processing time, e.g., hours or minutes). In the example shown in Figure 2, the process volume is expressed in weight [tons]. The process completion date is the date the process is completed. The shipment completion date is the date the shipment is completed. In the example shown in Figure 2, the process completion date and the shipment completion date are expressed in months and days, but they may be expressed in other units such as year, month, and day.

[0039] In this embodiment, the processing amount registered in the processing amount field 513 of a record in which the process number field 511 registers the process number "1" also represents the amount of raw materials used in the manufacture of the product.

[0040] The aforementioned product ID is an identifier used to identify and distinguish a product, such as the product name. The product ID is assigned to each product order, and in this embodiment, it also represents the type of product. Therefore, in this embodiment, different orders will have different product types. In this embodiment, the product type is defined on an order-by-order basis, but it is not limited to this and may be defined according to other rules. For example, the product type may be defined by the product model number (type) or the product's component composition. In cases where the product type is defined on an order-by-order basis, there may be exceptional provisions where the product type is the same even if the orders are different.

[0041] As described above, a process shipment performance information table PT is provided for each of the multiple products. Figure 2 shows process shipment performance information table PT-1 for product name "P001", process shipment performance information table PT-30 for product name "P030", process shipment performance information table PT-51 for product name "P051", and process shipment performance information table PT-60 for product name "P060", while the process shipment performance information tables PT for other products are not shown.

[0042] For example, in the process shipment performance information table PT-1 for product name "P001" shown in Figure 2A, in records where process number "1" is registered in process number field 511, the equipment name field 512, processing volume field 513, and completion date field 514 are registered as "Equipment A", "15", and "April 20th", respectively. In records where process number "2" is registered in process number field 511, the equipment name field 512, processing volume field 513, and completion date field 514 are registered as "Equipment B", "12", and "April 23rd", respectively. In records where process number "3" is registered in process number field 511, the equipment name field 512, processing volume field 513, and completion date field 514 are registered as In this case, "Equipment C", "12", and "April 25th" are registered respectively. In the record where process number; "4" is registered in process number field 511, "Equipment D", "10", and "April 27th" are registered respectively in equipment name field 512, processing volume field 513, and completion date field 514. In the record where process number; "5" is registered in process number field 511, "Equipment E", "10", and "May 1st" are registered respectively in equipment name field 512, processing volume field 513, and completion date field 514. In the record where "Shipped" is registered in equipment name field 512, "10" and "May 2nd" are registered respectively in processing volume field 513 and completion date field 514. Assuming the length of the predetermined period is one month and the target period (current period) is May, each of the processes with process numbers "1" through "4" is carried out in April of the previous period, which is one period prior to the target period, and each of the processes with process number "5" and "shipping" is carried out in May of the current period, which is the target period. For this product with product name "P001", manufacturing begins in April of the previous period, and by April of the previous period, the implementation of processes up to process number "4" is completed. In May of the current period, manufacturing begins from process number "5", and manufacturing is completed and shipped in May of the current period.

[0043] As shown in Figure 2, Figure 3 shows a time chart of manufacturing process performance information, displaying the completion date of each process (each piece of equipment) in chronological order for each product, based on the process shipment performance information table PT-1 for product name "P001", process shipment performance information table PT-30 for product name "P030", process shipment performance information table PT-51 for product name "P051", and process shipment performance information table PT-60 for product name "P060". For product name "P001", as mentioned above, manufacturing started in April of the previous period, continued as work-in-progress in May of the current period, and was completed and shipped in May of the current period. Product name "P001" is manufactured over two periods. For product name "P030", manufacturing started in May of the current period, and was completed and shipped in May of the current period. Product name "P030" is manufactured in one period. Product name "P051" is manufactured starting in April of the previous period, continues as work-in-progress in May of the current period, and will continue as work-in-progress in June of the next period if it is not completed in May of the current period. Product name "P051" is manufactured over at least three periods. Product name "P060" is manufactured starting in May of the current period, continues as work-in-progress in June of the next period if it is not completed in May of the current period. Product name "P060" is manufactured over at least two periods.

[0044] The raw material transport performance information table DT is a table that registers, for each of the multiple products, the type of raw material used in the manufacture of the product and the transport distance to the destination of the product. In this embodiment, the raw material transport performance information table DT registers the variety name of the raw material to represent the type of raw material, and the destination name (delivery destination name) to represent the transport distance. As shown in Figure 4, for example, the raw material transport performance information table DT includes a product name field 521 for registering the product name, a variety name field 522 for registering the variety name of the raw material in the product with the product name registered in the product name field 521, and a destination name field 523 for registering the destination name in the product with the product name registered in the product name field 521, and has a record for each different product (product name).

[0045] The aforementioned raw material variety name is an example of a raw material identifier (raw material ID), which is an identifier used to identify and distinguish the type of raw material. The aforementioned shipping destination name is an example of a shipping destination identifier (shipping destination ID), which is an identifier used to identify and distinguish the destination (delivery destination) of the product.

[0046] For example, if we refer to the record in the raw material transport performance information table DT shown in Figure 4 that registers the product name "P003" in the product name field 521, the product with product name "P003" is a raw material variety with variety name "H5" and a destination location with destination name "City B".

[0047] In the example shown in Figure 4, the destination name is registered, and as will be described later, the CO2 emissions from product transport are calculated by multiplying the CO2 emissions per unit transport volume corresponding to the destination name by the transport volume. However, instead of the destination name, the transport distance may be registered, and the CO2 emissions from product transport may be calculated by multiplying the CO2 emissions per unit transport distance by the transport distance.

[0048] The aforementioned common total CO2 emission information represents all common total CO2 emissions for each of the multiple periods that occurred in common during that period. Common total CO2 emissions are all CO2 emissions that occurred in common during a given period when two or more of the multiple products are manufactured. These are CO2 emissions that cannot be specifically linked to products or equipment, such as CO2 emissions for factory lighting, CO2 emissions for facility maintenance, CO2 emissions for inspection processes to inspect products, and CO2 emissions for transporting products within the factory. They are the CO2 emissions obtained by subtracting the CO2 emissions for direct activities to manufacture products from the CO2 emissions for factory operation. The common total CO2 emissions for a period are stored in the performance information storage unit 51 in association with a period identifier (period ID), as shown in Figure 5, for example. The period ID is an identifier used to specify and identify a period, for example, the period name. The length of the predetermined period (period length) is arbitrary and can be set in advance as appropriate, for example, two weeks, one month, a quarter, or six months. In this embodiment, as described above, as an example, the period length in the predetermined period is set to one month, and Figure 5 shows the common total CO2 emissions of 700 [tCO2] for the period of April and the common total CO2 emissions of 600 [tCO2] for the period of May.

[0049] In this embodiment, the performance information storage unit 51 also stores a work-in-progress information table CT, which stores work-in-progress information representing the first process (work-in-progress process) to be implemented in the next period. This work-in-progress information table CT includes, for example, a product name field 531 for registering the product name and a work-in-progress process number field 532 for registering the process number of the work-in-progress process for the product with the product name registered in the product name field 531, and has a record for each product that is in work-in-progress in the current period. Note that the processes implemented in the target period for a product can be recognized by referring to the process shipment performance information table PT, so the performance information storage unit 51 does not need to store the work-in-progress information table CT.

[0050] Returning to Figure 1, the unit emission information storage unit 52 stores unit emission information. The unit emission information represents the raw material unit CO2 emission, which is the CO2 emission per unit amount of the raw material; the process unit CO2 emission, which is the CO2 emission per unit processing amount of the process; and the transport unit CO2 emission, which is the CO2 emission per unit distance of the transport distance or the CO2 emission per unit transport amount of the transport volume.

[0051] In this embodiment, the unit emission information is stored in the unit emission information storage unit 52 in table format. The unit emission information may be stored in the unit emission information storage unit 52 in a single table, but in this embodiment, it is stored in the unit emission information storage unit 52 in multiple tables: a process unit CO2 emission information table UT, a raw material unit CO2 emission information table MT, and a transport unit CO2 emission information table TT.

[0052] The process unit CO2 emission information table UT is a table that registers the process unit CO2 emissions for each of several periods, broken down by process (equipment). The process unit CO2 emission information table UT, for example as shown in Figure 7, includes an equipment name field 541 for registering the equipment name and a unit CO2 emission field 542 for registering the process unit CO2 emissions for the equipment with the equipment name registered in the equipment name field 541 for that period, and has a record for each different process (equipment). The unit CO2 emission field 542 includes subfields for each period in order to register the process unit CO2 emissions for each period. In the example shown in Figure 7, the unit CO2 emission field 542 includes an April subfield 5421 for registering the process unit CO2 emissions for April and a May subfield 5422 for registering the process unit CO2 emissions for May.

[0053] Since CO2 emissions can vary depending on the operating status of the equipment used in the process, the CO2 emissions per process can vary from period to period.

[0054] The raw material unit CO2 emission information table MT is a table that registers the raw material unit CO2 emissions for each raw material for each of several periods. The raw material unit CO2 emission information table MT includes, for example, a variety name field 551 for registering the variety name of the raw material, and a unit CO2 emission field 552 for registering the raw material unit CO2 emissions for the period for the raw material of the variety name registered in the variety name field 551, and has a record for each different raw material. The unit CO2 emission field 552 includes subfields for each period in order to register the process unit CO2 emissions for each period. In the example shown in Figure 8, the unit CO2 emission field 552 includes an April subfield 5521 for registering the process unit CO2 emissions for April, and a May subfield 5522 for registering the process unit CO2 emissions for May.

[0055] In factories that manufacture metal products, in addition to ingots, recycled materials (such as scraps, pieces, and discarded metal products generated during manufacturing) are also used as raw materials. Therefore, the amount of recycled materials may vary from period to period, and consequently, the amount of CO2 emissions per unit of raw materials may vary from period to period.

[0056] The Transportation Unit CO2 Emission Information Table TT is a table that registers the transportation unit CO2 emissions for each of several periods, broken down by destination (transportation destination). The Transportation Unit CO2 Emission Information Table TT includes, for example, a destination name field 561 for registering destination names and a unit CO2 emission field 562 for registering the transportation unit CO2 emissions for the destinations registered in the destination name field 561 for that period, and has a record for each different destination (transportation destination). The unit CO2 emission field 562 includes subfields for each period in order to register the transportation unit CO2 emissions for each period. In the example shown in Figure 9, the unit CO2 emission field 562 includes an April subfield 5621 for registering the process unit CO2 emissions for April and a May subfield 5622 for registering the process unit CO2 emissions for May. In this embodiment, the CO2 emissions per unit transport volume corresponding to the destination name are registered as the transportation unit CO2 emissions in the unit CO2 emission field 562. The CO2 emissions per unit of transport may be the CO2 emissions per unit of transport corresponding to the destination name, or it may be the CO2 emissions per unit of transport distance.

[0057] Even when shipping the same product to the same destination, the means of transport (trucks, freight cars, etc.) and the size of those means (large trucks, medium trucks, and small trucks) may differ from period to period, and therefore the CO2 emissions per unit of transport may differ from period to period.

[0058] The actual performance information and unit emission information stored in the performance information storage unit 51 and the unit emission information storage unit 52, respectively, are given and stored before determining the CO2 emissions of the product during the target period.

[0059] Returning to Figure 1, the total product emission information storage unit 53 stores total product emission information for each of several periods, representing the CO2 emissions of each product during that period. In this embodiment, the total product emission information is stored in the total product emission information storage unit 53 in a table format total product emission table AT. This total product emission table AT includes, for example, a product name field 571 for registering the product name and a product CO2 emission field 572 for registering the CO2 emissions of the product with the product name registered in the product name field 571 during that period, and has a record for each different product. The product CO2 emission field 572 includes subfields for each period in order to register the CO2 emissions of the product for each period. In the example shown in Figure 10, the CO2 emission field 572 includes an April subfield 5721 for registering the CO2 emissions of the product in April and a May subfield 5722 for registering the CO2 emissions of the product in May.

[0060] The control processing unit 1 is a circuit that controls each of the parts 2 to 5 of the carbon dioxide emission calculation device 1000 according to the function of each part, and sequentially calculates the CO2 emissions of a product up to a target period among a plurality of consecutive and mutually different periods. The control processing unit 1 is configured, for example, with a CPU (Central Processing Unit) and its peripheral circuits. When the control processing program is executed, the control unit 11, emission calculation unit 12, update processing unit 13, and product emission calculation unit 14 are functionally configured in the control processing unit 1.

[0061] The control unit 11 controls each of the parts 2 to 5 of the carbon dioxide emission calculation device 1000 according to the function of each part, and is in charge of the overall control of the carbon dioxide emission calculation device 1000.

[0062] The emissions calculation unit 12 calculates the total CO2 emissions of a product during a given period by summing up the CO2 emissions of the processes performed on that product during the given period for each of several different types of products. Functionally, the emissions calculation unit 12 consists of a product process emissions calculation unit 121, a product raw material emissions calculation unit 122, a product transportation emissions calculation unit 123, and a product common emissions calculation unit 124.

[0063] The product process emission calculation unit 121 calculates the process CO2 emissions for a product during the target period by multiplying the processing volume of the process performed for that product during the target period by the CO2 emissions per process unit, and then summing up the results. For example, if the target period is May, for product "P001", in May, as shown in Figure 2A, process number "5" is performed using equipment E with a processing volume of 10 [tons], and the CO2 emissions per process unit for equipment E in May are 0.3 [tCO2 / ton], as shown in Figure 7. Therefore, the multiplication result for product "P001" in May is 10 [tons] × 0.3 [tCO2 / ton] = 3 [tCO2], and by summing these up, as shown in Figure 11, the CO2 emissions for product "P001" in May are calculated to be 3 [tCO2]. Alternatively, for example, if the target period is May, then in May, as shown in Figure 2C, the product named "P051" is processed using equipment B, C, D, and D, with processing volumes of 24 [tons], 20 [tons], 20 [tons], and 20 [tons] respectively, and the CO2 emissions per process unit in May for equipment B, C, and D are 2.0 [tCO2 / ton], 0.4 [tCO2 / ton], 1.5 [tCO2 / ton], and 1.5 [tCO2 / ton], respectively, as shown in Figure 7. Therefore, the multiplication results for product name "P051" in May are 24 [ton] × 2.0 [tCO2 / ton] = 48 [tCO2], 20 [ton] × 0.4 [tCO2 / ton] = 8 [tCO2], 20 [ton] × 1.5 [tCO2 / ton] = 30 [tCO2], and 20 [ton] × 1.5 [tCO2 / ton] = 30 [tCO2]. By summing these up, as shown in Figure 13, the CO2 emissions for product name "P001" in May are calculated to be 48 + 8 + 30 + 30 = 116 [tCO2].

[0064] The product raw material emission calculation unit 122 calculates the CO2 emissions of raw materials for each of the multiple products during the target period by multiplying the amount of raw materials for that product by the CO2 emissions per unit of raw materials, provided that the completion date of the first process for that product falls within the target period. In the example shown in Figure 2, when the target period is May, the products that include the completion date of the first process within the target period are product name "P030" and product name "P060". Therefore, as shown in Figure 2B, the amount of raw materials for product name "P030" is 40 [tons], as shown in Figure 4, the variety name of the raw material is "H2", and as shown in Figure 8, the CO2 emissions per unit of raw materials for May are 2.5 [tCO2 / ton]. Thus, as shown in Figure 12, the CO2 emissions of raw materials for product name "P030" in May are calculated to be 40 × 2.5 = 100 [tCO2]. Product name: "P060" has a raw material quantity of 20 [tons] as shown in Figure 2D, the raw material variety name is "H4" as shown in Figure 4, and the CO2 emissions per unit of raw material in May are 2.0 [tCO2 / ton] as shown in Figure 8. Therefore, as shown in Figure 14, the raw material CO2 emissions for product name "P060" in May can be calculated as 20 × 2.0 = 40 [tCO2].

[0065] The product transport emission calculation unit 123 calculates the transport CO2 emissions for each of the multiple products during the target period by multiplying the transport distance or transport volume to the destination of the product by the transport unit CO2 emission for that product, if the shipment completion date for that product falls within the target period. In this embodiment, the storage unit 5 stores the shipment volume (transport volume) and the CO2 emissions per unit transport volume for each destination (transport destination). Therefore, the transport CO2 emissions for a product can be calculated by multiplying the shipment volume (transport volume) by the CO2 emissions per unit transport volume according to the destination (transport destination). In the example shown in Figure 2, if the target period is May, the products that include a shipment completion date within the target period are product name "P001" and product name "P030". Therefore, as shown in Figure 2A, product "P001" has a shipment volume (transportation volume) of 10 [tons], as shown in Figure 4, its destination is "City A", and as shown in Figure 9, its CO2 emissions per unit of transport in May are 0.5 [tCO2 / ton]. Thus, as shown in Figure 11, the CO2 emissions from the transport of product "P001" in May are calculated to be 10 × 0.5 = 5 [tCO2]. As shown in Figure 2B, product "P030" has a shipment volume (transportation volume) of 30 [tons], as shown in Figure 4, its destination is "City B", and as shown in Figure 9, its CO2 emissions per unit of transport in May are 0.6 [tCO2 / ton]. Thus, as shown in Figure 12, the CO2 emissions from the transport of product "P030" in May are calculated to be 30 × 0.6 = 18 [tCO2].

[0066] The product common emission calculation unit 124 calculates the common CO2 emissions for each of the multiple products during the target period by multiplying the total common CO2 emissions for that period by a predetermined percentage. The predetermined percentage is, for example, the ratio of the product processing volume to the total product processing volume during the target period. The product processing volume is a first total meter obtained by summing the processing volumes of the processes performed on the product during the target period. The total product processing volume is a second total meter obtained by summing the first total meters obtained for each of the multiple products. In the example shown in Figure 2, if the target period is 5 months, for example, the first total meter for product name "P001" is obtained as 20 tons by summing the processing volume of process number "5" (10 tons) and the processing volume (shipping volume) of "shipping" (10 tons), as shown in Figures 2A and 15. Alternatively, for example, the first total weighing of product "P060" can be determined to be 60 tons by summing the processing volumes (shipping volumes) of 20 tons each at process numbers "1", "2", and "3", respectively, as shown in Figures 2D and 15. By summing the first total weighings of each product from "P001" to "P070" obtained in this way, the total product processing volume for May can be determined to be 8000 tons, as shown in Figure 15. As shown in Figure 5, the total common CO2 emissions in May are 600 [tCO2]. Therefore, as shown in Figure 15, the common CO2 emissions for product name "P001" in May are calculated as 600 × (20 / 8000) = 1.5 [tCO2], and the common CO2 emissions for product name "P060" are calculated as 600 × (60 / 8000) = 4.5 [tCO2].

[0067] The update processing unit 13 updates the total product emission information by storing the CO2 emissions of each product during the target period, which have been determined for each of the multiple products by the emission calculation unit 12, in the total product emission information storage unit 53. More specifically, for each of the multiple products, the update processing unit 13 calculates the CO2 emissions of the product during the target period by totaling the process CO2 emissions of the product, the raw material CO2 emissions of the product, the transportation CO2 emissions of the product, and the common CO2 emissions of the product, which have been determined for each of the multiple products by the emission calculation unit 12, and updates the total product emission information by storing the CO2 emissions of each product during the target period, which have been determined for each of the multiple products, in the total product emission information storage unit 53. In the example shown in Figure 2, if the target period is May, then in the previous period (April), the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions for product name "P001" are 59.4 [tCO2], 30 [tCO2], 0 [tCO2], and 3.5 [tCO2], respectively. By summing these up, the CO2 emissions for product name "P001" in April are calculated to be 92.9 [tCO2]. As shown in Figures 10A and 10B, in the record where product name "P001" is registered in product name field 571, the April subfield 5721 of product CO2 emissions field 572 is registered with "92.9" in the previous period (April) update process by the update processing unit 13. Then, in May, the current period, the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions for product "P001" are 3[tCO2], 0[tCO2], 5[tCO2], and 1.5[tCO2], respectively. By summing these up, the CO2 emissions for product "P001" in May are calculated to be 9.5[tCO2]. As shown in Figure 10B, in the record where product name "P001" is registered in product name field 571, "9.5" is registered in the May subfield 5721 of product CO2 emissions field 572 by the update processing unit 13 during the update processing for the current period (May).

[0068] The product emission calculation unit 14 calculates the CO2 emissions of each product up to the target period based on the sum of the CO2 emissions of the product during the target period and the CO2 emissions of the product during the period prior to the target period, which are stored in the total product emission information storage unit 53. In the example shown in Figure 2, if the target period is May and the product is product name "P001", the CO2 emissions of product name "P001" up to May are calculated as 102.4 [tCO2] by summing the CO2 emissions of April (92.9 [tCO2]) and May (9.5 [tCO2]), as shown in Figure 10B.

[0069] In a carbon dioxide emission calculation device 1000, which is an example of a carbon dioxide emission calculation system, the control processing unit 1, input unit 2, output unit 3, IF unit 4, and storage unit 5 can be configured by computers such as desktop or notebook computers. Of course, as mentioned above, the carbon dioxide emission calculation system may be configured by multiple computers that are connected in a communicative manner.

[0070] Next, the operation of this embodiment will be described. Figure 16 is a flowchart showing the operation of the carbon dioxide emission calculation system.

[0071] When the carbon dioxide emission calculation device 1000 with this configuration is powered on, it performs the initialization of each necessary part and starts operating. The control processing unit 1 is functionally configured with a control unit 11, an emission calculation unit 12, an update processing unit 13, and a product emission calculation unit 14 through the execution of its control processing program. The emission calculation unit 12 is functionally configured with a product process emission calculation unit 121, a product raw material emission calculation unit 122, a product transport emission calculation unit 123, and a product common emission calculation unit 124.

[0072] Each period, for example, in the next period which is one period after the target period, the following processes are carried out. In Figure 16, the carbon dioxide emission calculation device 1000 calculates the process CO2 emissions for each product during the target period by summing up the multiplication results obtained by multiplying the processing amount of the process performed for that product during the target period by the CO2 emissions per process unit for that product, using the product process process emission calculation unit 121 in the emission calculation unit 12 of the control processing unit 1 (S1).

[0073] Next, the carbon dioxide emission calculation device 1000, using the product raw material emission calculation unit 122 in the emission calculation unit 12, calculates the raw material CO2 emissions of each of the plurality of products during the target period by multiplying the amount of raw materials for that product by the CO2 emissions per unit of raw materials if the completion date of the first process for that product falls within the target period (S2).

[0074] Next, the carbon dioxide emission calculation device 1000, using the product transport emission calculation unit 123 in the emission calculation unit 12, calculates the transport CO2 emissions of each of the plurality of products during the target period by multiplying the transport distance or transport volume to the destination of the product by the transport unit CO2 emissions if the product's shipment completion date falls within the target period (S3).

[0075] Next, the carbon dioxide emission calculation device 1000 uses the product common emission calculation unit 124 in the emission calculation unit 12 to calculate the common CO2 emissions for each of the plurality of products during the target period by multiplying the total common CO2 emissions for that period by a predetermined percentage (S4).

[0076] Next, the carbon dioxide emission calculation device 1000 updates the total product emission information by storing the CO2 emissions of each product for the target period, which were calculated for each of the multiple products by the emission calculation unit 12, in the total product emission information storage unit 53 (S5).

[0077] Next, the carbon dioxide emission calculation device 1000, using the product emission calculation unit 14 of the control processing unit 1, calculates the CO2 emissions of each of the multiple products up to the target period based on the sum of the CO2 emissions of the product during the target period and the CO2 emissions of the product during the period prior to the target period, which are stored in the total product emission information storage unit 53 (S6).

[0078] Then, the carbon dioxide emission calculation device 1000, via the control unit 11 of the control processing unit 1, outputs the calculated CO2 emissions of each product up to the target period to the output unit 3, and the output unit 3 outputs to the outside (S7), thus ending the main process for the current period. The control unit 11 may, if necessary, output the calculated CO2 emissions of each product up to the target period to an external device via the IF unit 4.

[0079] As described above, the carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example) 1000 in the embodiment, and the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein, determine the CO2 emissions of the product during the target period by totaling the CO2 emissions of processes performed on the product during the target period. Since this does not include CO2 emissions from processes performed outside the target period, even if the product is manufactured over multiple periods, the CO2 emissions of the product during the target period can be determined with greater accuracy. The carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method and carbon dioxide emission calculation program store total product emission information, update the total product emission information with the more accurately determined CO2 emissions of the product during the target period, and determine the CO2 emissions of the product up to the target period based on the sum of the CO2 emissions of the product during the target period and the CO2 emissions of the product in periods prior to the target period. Therefore, the CO2 emissions of the product up to the target period can be determined with greater accuracy.

[0080] The above-mentioned carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program store product performance information, common total CO2 emission information, and unit CO2 emission information, so it can determine each CO2 emission. Therefore, for products manufactured from raw materials through multiple processes and then shipped, it is possible to determine the CO2 emissions of products up to the target period. If the shipment is included within the target period, the above-mentioned carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program can determine the CO2 emissions of products manufactured from raw materials through multiple processes and then shipped by determining the CO2 emissions of products up to the target period. The above-mentioned carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program can allocate the CO2 emissions for the target period to the products for the target period. Therefore, CO2 emissions can be managed on a period-by-period basis. Furthermore, CO2 emissions can be managed even if there is an increase or decrease in the amount of work-in-progress products between the beginning and end of the period.

[0081] The above-described carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program can allocate the common CO2 emissions of a product to a product based on the ratio of the product processing volume to the total product processing volume during the target period. When the processing volume is large, the CO2 emissions usually increase, so if the common CO2 emissions of a product are calculated based on the ratio of the number of processes, the accuracy of the common CO2 emissions of the product deteriorates. If the common CO2 emissions of a product are calculated based on the ratio of the product volume, for products manufactured over multiple periods, the CO2 emissions are allocated to the product over multiple periods, thus degrading the accuracy of the common CO2 emissions of the product. However, the above-described carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program reduce this degradation of accuracy.

[0082] In the above-described embodiment, the predetermined ratio was the ratio of the amount of product processed to the total amount of product processed during the target period. However, the predetermined ratio may also be the ratio of product emissions to the total product emissions during the target period. The product emissions are a first total emissions obtained by summing the process CO2 emissions of the product, the raw material CO2 emissions of the product, and the transportation CO2 emissions of the product during the target period. The total amount of product processed is a second total emissions obtained by summing the first total emissions obtained for each of the multiple products. Such a carbon dioxide emission calculation device 1000, and the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein, can allocate the common CO2 emissions of a product to a product at the ratio of product emissions to the total product emissions during the target period. If the common CO2 emissions of a product are calculated at the ratio of the amount of product, for products manufactured over multiple periods, CO2 emissions will be allocated to the product over multiple periods, resulting in a deterioration of the accuracy of the common CO2 emissions of the product. However, the above-described carbon dioxide emission calculation device 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program reduce this deterioration of accuracy.

[0083] Figure 17 is a diagram illustrating, as an example, how to calculate the common CO2 emissions of a product based on its emission ratio.

[0084] In the example shown in Figure 2, if the target period is May, for example, the first total emissions for product "P001" can be calculated as 8 [tons] by summing the process CO2 emissions of 3 [tCO2] in process number "5" and the transport CO2 emissions of 5 [tCO2], as shown in Figures 2A and 11. Alternatively, for example, the first total emissions for product "P060" can be calculated as 112 [tons] by summing the process CO2 emissions of 24 [tCO2], 40 [tCO2], and 8 [tCO2] in each of the process numbers "1", "2", and "3", respectively, and the raw material CO2 emissions of 40 [tCO2], as shown in Figures 2D and 14. By summing the first total emissions for each product from "P001" to "P070" calculated in this way, the total product emissions for May can be calculated as 9000 [tons], as shown in Figure 17. As shown in Figure 5, the total common CO2 emissions in May are 600 [tCO2]. Therefore, as shown in Figure 17, the common CO2 emissions for product name "P001" in May are calculated as 600 × (8 / 9000) = 0.533 (rounded to the fourth decimal place) [tCO2], and the common CO2 emissions for product name "P060" are calculated as 600 × (112 / 9000) = 7.47 [tCO2].

[0085] In the above-described embodiment, the update processing unit 13 determined the CO2 emissions of each product during the target period by summing up the process CO2 emissions of the product, the raw material CO2 emissions of the product, the transportation CO2 emissions of the product, and the common CO2 emissions of the product, which were determined for each product by the emissions calculation unit 12. However, the update processing unit 13 may further update the product process emission information, product raw material emission information, product transportation emission information, and product common emission information by storing the process CO2 emissions of each product, the raw material CO2 emissions of each product, the transportation CO2 emissions of each product, and the common CO2 emissions of each product, which were determined for each product by the emissions calculation unit 12, in the total product emission information storage unit 53.

[0086] In this case, the total product emission information storage unit 53 further stores, for each of the multiple periods, product process emission information representing the CO2 emissions of each process of each product during that period, product raw material emission information representing the CO2 emissions of each raw material of each product during that period, product transport emission information representing the CO2 emissions of each transport of each product during that period, and product common emission information representing the CO2 emissions of each product during that period. The product emission calculation unit 14 calculates the CO2 emissions of each of the multiple products up to the target period by summing the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions of the product for the target period stored in the total product emission information storage unit 53, and the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions of the product for the period prior to the target period.

[0087] Figure 18 shows, as an example, a process CO2 emission information table and a raw material CO2 emission information table. Figure 18A shows the process CO2 emission information table ST, and Figure 18B shows the raw material CO2 emission information table BT. Figure 19 shows, as an example, a transport CO2 emission information table and a common CO2 emission information table. Figure 19A shows the transport CO2 emission information table FT, and Figure 19B shows the common CO2 emission information table CT.

[0088] Each of these product process emission information, product raw material emission information, product transportation emission information, and common product emission information is stored, for example, in a table format in the total product emission information storage unit 53.

[0089] The process CO2 emission information table ST, which registers product process emission information, includes, for example, a product name field 611 for registering the product name and a process CO2 emission field 612 for registering the process CO2 emissions for the product with the product name registered in the product name field 611 for that period, and has a record for each different product. The process CO2 emission field 612 includes subfields for each period in order to register process CO2 emissions for each period. In the example shown in Figure 18A, the process CO2 emission field 612 includes an April subfield 6121 for registering the process CO2 emissions for April and a May subfield 6122 for registering the process CO2 emissions for May.

[0090] The raw material CO2 emission information table BT, which registers product raw material emission information, includes, for example, a product name field 621 for registering the product name and a raw material CO2 emission field 622 for registering the raw material CO2 emissions for the product with the product name registered in the product name field 621 for that period, and has a record for each different product. The raw material CO2 emission field 622 includes subfields for each period in order to register raw material CO2 emissions for each period. In the example shown in Figure 18B, the raw material CO2 emission field 622 includes an April subfield 6221 for registering raw material CO2 emissions for April and a May subfield 6222 for registering raw material CO2 emissions for May.

[0091] The transport CO2 emission information table FT, which registers product transport emission information, includes, for example, a product name field 631 for registering the product name and a transport CO2 emission field 632 for registering the transport CO2 emissions for the product with the product name registered in the product name field 631 for that period, and has a record for each different product. The transport CO2 emission field 632 includes subfields for each period in order to register transport CO2 emissions for each period. In the example shown in Figure 19A, the transport CO2 emission field 632 includes an April subfield 6321 for registering transport CO2 emissions for April and a May subfield 6322 for registering transport CO2 emissions for May.

[0092] The common CO2 emission information table CT, which registers common product emission information, includes, for example, a product name field 641 for registering product names and a common CO2 emission field 642 for registering the common CO2 emissions for the product with the product name registered in the product name field 641 for that period, and has a record for each different product. The common CO2 emission field 642 includes subfields for each period in order to register process CO2 emissions for each period. In the example shown in Figure 19B, the common CO2 emission field 642 includes an April subfield 6421 for registering the common CO2 emissions for April and a May subfield 6422 for registering the common CO2 emissions for May.

[0093] For example, in the example shown in Figure 2, if the target period is May, then in the previous period (April), the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions for product name "P001" are 59.4[tCO2], 30[tCO2], 0[tCO2], and 3.5[tCO2], respectively. Therefore, as shown in Figures 18 and 19, in the record where product name "P001" is registered in product name field 571, the April subfields 6121, 6221, 6321, and 6421 of the process CO2 emissions field 612, raw material CO2 emissions field 622, transport CO2 emissions field 632, and common CO2 emissions field 642 are updated by the update processing unit 13 for the previous period (April), registering "59.4", "30", "0", and "3.5", respectively. Then, by summing these up, the product emission calculation unit 14 determines that the CO2 emissions for product name "P001" up to April are 92.9 [tCO2]. Meanwhile, in May, which is the current period, the process CO2 emissions, raw material CO2 emissions, transport CO2 emissions, and common CO2 emissions for product name "P001" are 3 [tCO2], 0 [tCO2], 5 [tCO2], and 1.5 [tCO2], respectively. Therefore, as shown in Figures 18 and 19, in the record where product name "P001" is registered in the product name field 571, the April subfields 6121, 6221, 6321, and 6421 of the process CO2 emissions field 612, raw material CO2 emissions field 622, transport CO2 emissions field 632, and common CO2 emissions field 642 are updated by the update processing unit 13 for the current period (May), registering "3", "0", "5", and "1.5", respectively. By summing these up and adding the CO2 emissions of product "P001" up to April, which amounted to 92.9 [tCO2], the product emission calculation unit 14 determines the CO2 emissions of product "P001" up to May, which amounted to 102.4 [tCO2].

[0094] To illustrate the present invention, the embodiments have been adequately and fully described above with reference to the drawings. However, those skilled in the art should recognize that it is easy to modify and / or improve upon the above embodiments. Therefore, unless such modifications or improvements implemented by those skilled in the art fall outside the scope of the claims, such modifications or improvements shall be considered to be included within the scope of the claims. [Explanation of symbols]

[0095] 1000 Carbon Dioxide Emission Calculation System (An example of a carbon dioxide emission calculation device) 1 Control Processing Unit 2 Input section 3. Output section 4. Interface section (IF section) 5 Storage section 11 Control Unit 12 Emission calculation section 13 Update Processing Unit 14 Product emissions calculation section 51 Performance Information Storage Unit 52 Unit Emission Information Storage Unit 53 All product emissions information storage unit

Claims

1. In a factory capable of manufacturing multiple types of products that are produced from raw materials through multiple processes and then shipped, the CO2 of the products up to a target period among several different time periods is calculated. ２ A carbon dioxide emission calculation system for determining emissions, For each of the aforementioned multiple periods, each CO2 for each product during that period ２ A total product emission information storage unit that stores total product emission information representing emissions, For each of several different types of products, the CO2 of the processes performed on that product during the aforementioned period. ２ By totaling the emissions, the CO2 emissions of the product during the aforementioned period can be calculated. ２ An emissions calculation unit that determines the amount of emissions, The CO2 emissions calculation unit determined for each of the plurality of products during the target period. ２ An update processing unit that updates the total product emission information by storing the emissions in the total product emission information storage unit, For each of the aforementioned products, the CO2 emissions of that product during the target period, as stored in the total product emissions information storage unit, are recorded. ２ Emissions and CO2 emissions from the product in the period prior to the aforementioned target period. ２ Based on the total emissions, the CO2 emissions of the product up to the aforementioned period ２ It includes a product emissions calculation unit that determines the amount of emissions, A carbon dioxide emissions calculation system.

2. For each of the plurality of products, product performance information representing the type of raw material used in manufacturing the product, the amount of raw material used in manufacturing the product, the plurality of processes performed in manufacturing the product, the processing amount of each of the plurality of processes performed in manufacturing the product, the completion date of each of the plurality of processes performed in manufacturing the product, the transport distance or transport volume to the destination of shipment of the product, and the shipment completion date of the shipment of the product, and for each of the plurality of periods, all common total CO ２ emission amounts common to the period representing the total CO ２ an achievement information storage unit that stores emission amount information, CO2 per unit amount of the aforementioned raw materials ２ CO2 emissions are measured in units of raw materials. ２ Emissions, CO2 per unit processing volume of the above process ２ CO2 emissions are the process unit CO2. ２ Emissions, and CO2 per unit distance of the transport distance ２ CO emissions or CO per unit transport volume of the transported amount ２ CO2 is the transport unit of emissions. ２ CO2 is the unit representing each type of emission. ２ It further comprises a unit emission information storage unit that stores emission information, The emissions calculation unit, For each of the aforementioned products, the processing volume of the process performed in the aforementioned period for that product is calculated as the CO2 of the process unit. ２ By multiplying the emissions and summing the results, the process CO2 emissions for the product during the aforementioned period can be calculated. ２ A product process emissions calculation unit that determines emissions, For each of the aforementioned products, if the completion date of the first process falls within the aforementioned period for that product, the amount of raw materials for that product will be calculated using the raw material unit CO2. ２ By multiplying by the emissions, the raw material CO2 of the product during the aforementioned period is calculated. ２ A product raw material emission calculation unit that determines the amount of emissions, For each of the aforementioned products, if the shipment completion date for that product falls within the aforementioned period, the transportation distance or volume to the destination of that product will be calculated using the transportation unit CO2. ２ By multiplying by the emissions, the transport CO2 of the product during the aforementioned period is calculated. ２ Product transport emissions calculation unit for determining emissions, For each of the aforementioned products, the common total CO2 for that period ２ By multiplying the emissions by a predetermined percentage, the common CO2 emissions of the product during the aforementioned period are calculated. ２ It includes a product-wide emissions calculation unit for determining emissions, The update processing unit, for each of the plurality of products, calculates the process CO2 of the product during the target period, which was determined for that product by the emission calculation unit. ２ CO2 emissions, raw materials for products ２ CO2 emissions, CO2 from product transport ２ Common CO2 emissions and products ２ By totaling the emissions, the CO2 emissions of the product during the aforementioned period can be calculated. ２ The CO2 emissions were determined for each of the aforementioned products during the aforementioned period. ２ The total product emission information is updated by storing the emissions in the total product emission information storage unit. A carbon dioxide emissions calculation system.

3. For each of the aforementioned multiple products, product performance information representing the type of raw materials used in the manufacture of the product, the quantity of raw materials used in the manufacture of the product, the multiple processes carried out in the manufacture of the product, the processing volume of each of the multiple processes carried out in the manufacture of the product, the completion date of each of the multiple processes carried out in the manufacture of the product, the transportation distance or transportation volume to the destination of the product, and the completion date of shipment of the product, as well as for each of the aforementioned multiple periods, all common total CO2 generated in all of those periods. ２ Common total CO2 emissions ２ A performance information storage unit that stores emission information, CO2 per unit amount of the aforementioned raw materials ２ CO2 emissions are measured in units of raw materials. ２ Emissions, CO2 per unit processing volume of the above process ２ CO2 emissions are the process unit CO2. ２ Emissions, and CO2 per unit distance of the transport distance ２ CO emissions or CO per unit transport volume of the transported amount ２ CO2 is the transport unit of emissions. ２ CO2 is the unit representing each type of emission. ２ It further comprises a unit emission information storage unit that stores emission information, The emissions calculation unit, For each of the aforementioned products, the processing volume of the process performed in the aforementioned period for that product is calculated as the CO2 of the process unit. ２ By multiplying the emissions and summing the results, the process CO2 emissions for the product during the aforementioned period can be calculated. ２ A product process emissions calculation unit that determines emissions, For each of the aforementioned products, if the completion date of the first process falls within the aforementioned period for that product, the amount of raw materials for that product will be calculated using the raw material unit CO2. ２ By multiplying by the emissions, the raw material CO2 of the product during the aforementioned period is calculated. ２ A product raw material emission calculation unit that determines the amount of emissions, For each of the aforementioned products, if the shipment completion date for that product falls within the aforementioned period, the transportation distance or volume to the destination of that product will be calculated using the transportation unit CO2. ２ By multiplying by the emissions, the transport CO2 of the product during the aforementioned period is calculated. ２ Product transport emissions calculation unit for determining emissions, For each of the aforementioned products, the common total CO2 for that period ２ By multiplying the emissions by a predetermined percentage, the common CO2 emissions of the product during the aforementioned period are calculated. ２ It includes a product-wide emissions calculation unit for determining emissions, The aforementioned total product emissions information storage unit stores the CO2 emissions information for each of the multiple periods, for each process of each product during that period. ２ Product process emission information showing emissions, and CO2 emissions for each raw material of each product during the relevant period. ２ Product raw material emission information representing emissions, and CO2 emissions for each product during the relevant period. ２ Product transport emissions information representing emissions, and the common CO2 emissions for each product during the period. ２ Furthermore, it stores product-specific emission information that represents emissions, The update processing unit further calculates the CO2 emissions for each of the multiple products during the target period, which were determined by the emissions calculation unit for each of the processes of each product. ２ CO2 emissions, CO2 emissions from each raw material of each product ２ Emissions, CO2 emissions for each product during transport ２ Emissions and Common CO2 emissions for each product ２ By storing each emission in the aforementioned total product emission information storage unit, the product process emission information, product raw material emission information, product transportation emission information, and common product emission information are updated. The product emission calculation unit calculates the process CO2 emissions for each of the plurality of products stored in the total product emission information storage unit for the target period. ２ Emissions, CO2 from the raw materials of the product ２ Emissions, CO2 emissions from the transport of the product. ２ Emissions and Common CO2 emissions of the product ２ Emissions and process CO2 emissions for the product during the period prior to the aforementioned target period. ２ Emissions, CO2 from the raw materials of the product ２ Emissions, CO2 emissions from the transport of the product. ２ Emissions and Common CO2 emissions of the product ２ By totaling the emissions, the CO2 emissions of the product up to the aforementioned period can be calculated. ２ To calculate emissions, The carbon dioxide emission calculation system according to claim 1.

4. The predetermined ratio is the ratio of the amount of product processed to the total amount of product processed during the period in question. The aforementioned product processing volume is a first total volume obtained by summing the processing volumes of the processes performed on the product during the aforementioned period. The total product processing volume is a second total quantity obtained by summing up the first total quantities obtained for each of the multiple products. A carbon dioxide emission calculation system according to claim 2 or claim 3.

5. The predetermined ratio is the ratio of product emissions to total product emissions during the aforementioned period. The aforementioned product emissions are the process CO2 emissions of the product during the aforementioned period. ２ Emissions, CO2 from the raw materials of the aforementioned products ２ CO2 emissions and the transport of the said products ２ This is the first total emissions, which is obtained by summing up the emissions. The total product emissions mentioned above are the second total emissions obtained by summing up the first total emissions obtained for each of the multiple products. A carbon dioxide emission calculation system according to claim 2 or claim 3.

6. In a factory capable of manufacturing multiple types of products that are produced from raw materials through multiple processes and then shipped, the CO2 of the products up to a target period among several different time periods is calculated. ２ A method for calculating carbon dioxide emissions, For each of several different types of products, the CO2 of the processes performed on that product during the aforementioned period. ２ By totaling the emissions, the CO2 emissions of the product during the aforementioned period can be calculated. ２ The emissions calculation process for determining emissions, For each of the aforementioned multiple periods, each CO2 for each product during that period ２ The total product emission information storage unit stores total product emission information representing total product emissions, and the CO2 emissions for each of the multiple products during the target period, which were determined in the emission calculation process, are stored in the total product emission information storage unit. ２ An update process that updates the total product emission information by storing the emission amounts, For each of the aforementioned products, the CO2 emissions of that product during the target period, as stored in the total product emissions information storage unit, are recorded. ２ Emissions and CO2 emissions from the product in the period prior to the aforementioned target period. ２ Based on the total emissions, the CO2 emissions of the product up to the aforementioned period ２ It includes a product emissions calculation process for determining emissions, Method for calculating carbon dioxide emissions.

7. In a factory capable of manufacturing multiple types of products that are produced from raw materials through multiple processes and then shipped, the CO2 of the products up to a target period among several different time periods is calculated. ２ A carbon dioxide emission calculation program that determines the amount of emissions, A carbon dioxide emission calculation program for causing a computer to function as a carbon dioxide emission calculation system according to any one of claims 1, 2, 3, 4 relating to claim 2, 4 relating to claim 3, 5 relating to claim 2, and 5 relating to claim 3.

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