JP2016136328A - Environmental load evaluation device and environmental load evaluation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmental load evaluation device for further appropriately evaluating an environmental load by LCA (Life Cycle Assessment).SOLUTION: The environmental load evaluation device comprises: a storage unit 120 which stores material information 123 on material of a component, basic unit candidate information 126 with which a candidate of a basic unit item of an environmental load is associated according to a component, and basic unit production process information 125 with which products including intermediate products in producing a component related to the basic unit item is associated according to the basic unit item; a coincidence calculation unit 112 which calculates coincidence of material of a component and a product associated with a candidate of the basic unit item in the basic unit production process information 125 for each candidate of the basic unit item associated with a predetermined component in the basic unit candidate information 126; and an environmental load evaluation unit 113 which calculates an environmental load of a component related to the basic unit item determined by using the coincidence.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an environmental load evaluation device and an environmental load evaluation method.

  As a background art of this technical field, there is a technique disclosed in Patent Document 1. The environmental load calculation device disclosed in Patent Document 1 states that “parts table information for specifying a hierarchical structure of a component constituting a product and a basic unit of the environmental load are associated in advance according to the type of the component. In the hierarchical structure identified by the storage unit, the basic unit information that is information, the production process information that can specify the value of the environmental load in the process of producing the component, and the parts table information, The basic unit of environmental load is associated with the basic unit information, and the value of the environmental load in the process of producing the higher level component is located in the lower layer among the components specified by the production process information. A basic unit that associates a basic unit with a component to be configured, a basic unit of an environmental load according to the type of the configuration that is associated with the basic unit specifying unit, and a host that is configured by the component Comprising the environmental impact of all processes that produce constructs in the hierarchy, the environmental load calculation unit for calculating the environmental impact of a product with a ".

JP 2014-93035 A

  In recent years, it has been required to grasp the environmental load related to products. One of the methods for calculating the environmental load is a method using a life cycle assessment (hereinafter referred to as “LCA”). In the technology according to Patent Document 1, the environmental load is calculated based on the LCA by using information in which the parts list of the parts constituting the product is associated with the basic unit of the environmental load.

  However, if the creators of the information on the parts table and the information on the basic unit are different, it is conceivable that the types of parts and materials do not correspond to the information on the basic unit. In order to make these correspond, man-hours and costs, such as creation of a correspondence table, are required.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a technique for more appropriately evaluating the environmental load by LCA.

  The present application includes a plurality of means for solving the above-described problems, and examples thereof are as follows.

  In order to solve the above-described problem, the environmental load evaluation apparatus of the present invention is a basic unit candidate in which material information related to a material of a part is associated with a basic unit item candidate that is an item of a basic unit of environmental load according to the part. A storage unit for storing information and production process information associated with a product including an intermediate product when producing the part related to the basic unit item according to the basic unit item; and the basic unit For each of the basic unit item candidates associated with the predetermined part in the candidate information, the degree of coincidence between the material of the part and the product associated with the basic unit item candidate in the production process information is calculated. A degree of coincidence calculation unit, and an environmental load evaluation unit that calculates the environmental load of the component related to the basic unit item determined using the degree of coincidence.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which performs evaluation of the environmental load by LCA more efficiently can be provided.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is an example of the functional block diagram of an environmental load evaluation apparatus. It is a figure which shows an example of structural design information. It is a figure which shows an example of attribute design information. It is a figure which shows an example of material information. It is a figure which shows an example of basic unit environmental load information. It is a figure which shows an example of basic unit production process information. It is a figure which shows an example of basic unit candidate information. It is a figure which shows the hardware structural example of an environmental load evaluation apparatus. It is a flowchart which shows the flow of an environmental load evaluation process. It is a flowchart which shows the flow of a coincidence degree calculation process. It is a flowchart which shows the flow of an environmental load calculation process. It is a figure which shows an example of the coincidence information display screen which displays coincidence information. It is a figure which shows an example of a production process determination result display screen. It is a figure which shows an example of an environmental load evaluation result display screen.

  LCA is used as one of the methods for calculating the environmental load of the entire product life cycle from production of raw materials used for products to product disposal and recycling. When it is difficult for the LCA evaluator to directly measure the environmental load of the entire product life cycle, the environmental load is calculated using the following (Equation 1).

  Environmental load = Activity amount x Basic unit ... (Formula 1)

  In (Expression 1), the activity amount is a feature amount of the product life cycle, and the basic unit is an estimated value of the environmental load per unit activity amount. The basic unit is generated from the environmental load and statistical data of similar products.

  For example, when a part of a part constituting a product is a purchased part from another company, the amount of raw material used for the purchased part is used as the amount of activity in calculating the environmental load. For the basic unit, a value created by a research institution or an industry group related to the production of raw materials is used. That is, the evaluator of the LCA collects the usage amount for all the parts used in the product for which the LCA is evaluated, and calculates the environmental load of the product by using (Equation 1) in association with the basic unit.

  However, since the creator of the information related to the amount of activity including the amount of raw material used and the information related to the basic unit are often different, it takes effort to make it correspond as a pair. For example, cables used in electronic devices include copper-clad wires for transmitting electrical signals and optical fiber cables for transmitting optical signals. While the basic unit is determined based on these types, Since the information regarding the usage amount of parts often does not include the type, a large amount of cost is required to make them correspond. The environmental load evaluation device in the present embodiment appropriately calculates the environmental load without going through a process of pairing these pieces of information in advance.

  FIG. 1 is an example of a functional block diagram of the environmental load evaluation apparatus 100. Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. The “component” described in the present embodiment is not limited to a component that is a part of a product. For example, a product or an article made up of each component is also included in “parts”.

  In the present embodiment, a case where at least one part of a part is purchased will be described for convenience. However, this embodiment can also be implemented when all the parts are provided by the company.

  The environmental load evaluation device 100 is an electronic device such as a PC (Personal Computer) or a server device. The environmental load evaluation apparatus 100 includes an arithmetic processing unit 110, a storage unit 120, an input unit 130, and an output unit 140. The arithmetic processing unit 110 controls processing related to LCA evaluation. The storage unit 120 stores data necessary for the processing of the arithmetic processing unit 110. The input unit 130 receives an input operation from the user. The output unit 140 performs an output process of the LCA evaluation result by the arithmetic processing unit 110. The output unit 140 generates display information on a coincidence degree information display screen, a production process determination result display screen, and an environmental load evaluation result display screen, which will be described later, and displays them on a display device described later.

  The arithmetic processing unit 110 includes a basic unit candidate determination unit 111, a matching degree calculation unit 112, and an environmental load evaluation unit 113. The basic unit candidate determination unit 111 identifies a basic unit item candidate associated with a part constituting a product to be evaluated for LCA. The basic unit item is a part type for calculating the basic unit.

  The degree of coincidence calculation unit 112 calculates the degree of coincidence of a part material with respect to a basic unit item corresponding to the part for a predetermined part. Although the details will be described later, the degree-of-match calculation unit 112 calculates, for each basic unit item candidate, a character string indicating the name of the material of the part and the name of the intermediate product when producing the part related to the basic unit item. The degree of coincidence is calculated by comparison.

  The environmental load evaluation unit 113 identifies the basic unit item corresponding to the part based on the degree of coincidence. The environmental load evaluation unit 113 calculates the environmental load of the part by regarding that the part is produced according to the specified basic unit item. The environmental load evaluation unit 113 calculates the environmental load as an LCA evaluation of the entire product by using the environmental load of the parts constituting the product.

  The storage unit 120 includes structural design information 121, attribute design information 122, material information 123, basic unit environmental load information 124, basic unit production process information 125, basic unit candidate information 126, and matching degree information 127. Production process determination information 128 and environmental load evaluation information 129 are stored. Among the information stored in the storage unit 120, the structural design information 121, the attribute design information 122, the material information 123, the basic unit environmental load information 124, the basic unit production process information 125, and the basic unit candidate information 126 Is stored in advance in the storage unit 120 before the processing of this embodiment is started. The degree-of-match information 127, the production process determination information 128, and the environmental load evaluation information 129 are information output as a result of processing in the present embodiment.

  The structural design information 121 is information in which, for each product, the parts constituting the product and the number thereof are associated. The attribute design information 122 is information in which a component and a component type are associated with each other.

  The material information 123 is information regarding the material of the part. If the part is a purchased part, the material information 123 is obtained from the supplier of the purchased part because the information regarding the material cannot be grasped by the company. The material information 123 may be obtained as information on chemical substance regulations, and in that case, it is used to calculate the content of the chemical substance.

  The basic unit environmental load information 124 is information in which information on the environmental load at the time of producing a part related to the basic unit item is associated with each basic unit item. The basic unit environmental load information 124 includes the load amount of the load substance as a basic unit which is a value of the environmental load. As described above, since a value created by a research institution or the like is used for the basic unit, the basic unit environmental load information 124 is normally used by another organization.

  The basic unit production process information 125 is information that stores, for each basic unit item, a product including an intermediate product when producing a part related to the basic unit item. In the basic unit production process information 125, products are stored so that the order in which the products are produced can be understood. The product includes an intermediate product produced in the process of producing the final product and a final product. Further, the order in which the products are produced will be described as a hierarchy, and it is assumed that the product is produced in the order closer to the finished product as the hierarchy is higher. The basic unit candidate information 126 is information in which a basic unit item candidate is associated with a component type.

  The degree of coincidence information 127 is information that associates the basic unit item with the degree of coincidence with the material of the component calculated for the basic unit item. The production process determination information 128 is information including an intermediate product including a character string indicating the material of the part and a hierarchy of the intermediate product. The environmental load evaluation information 129 is information in which the amount of environmental load is stored in accordance with the environmental load substance when the product is produced.

  Next, each piece of information stored in the storage unit 120 in advance before starting the processing of the present embodiment will be described.

  FIG. 2 is a diagram illustrating an example of the structural design information 121. The structural design information 121 includes a parent part number 121a, a child part number 121b, and a number 121c. The parent part number 121a and the child part number 121b are identification information for specifying a part, and the number 121c is the number of the child part number 121b. In the structural design information 121, the related parent part number 121a and child part number 121b are in a parent-child relationship.

  In the structural design information 121 illustrated in FIG. 2, information whose child part number 121b is “Part_1” and whose number 121c is “1” is associated with the part whose parent part number 121a is “Prod_A”. . Assuming that the part “Prod_A” is a product, it can be seen that the product “Prod_A” includes one part “Part_1”.

  Similarly, according to the second and third stages of the structural design information 121, it can be understood that the part “Part_1” includes two child parts “Part_2” and three child parts “Part_3”.

  The structural design information is not limited to the form shown in FIG. 2 as long as it can identify a component, the components constituting the component, the number of components, and the hierarchy in the configuration.

  FIG. 3 is a diagram illustrating an example of the attribute design information 122. The attribute design information 122 includes a part number 122a and a part type 122b. The part number 122a is identification information that identifies a part. The component type 122b is information indicating the type of component. The attribute design information 122 illustrated in FIG. 3 indicates that the part type 122b is “cable” for the part whose part number 122a is specified by “Part_2”.

  FIG. 4 is a diagram illustrating an example of the material information 123. The material information 123 includes a part number 123a, a part mass 123b, a material type 123c, and a material mass 123d. The part number 123 a is identification information for specifying a part, and corresponds to the part number 122 a of the attribute design information 122.

  The component mass 123b is information indicating the mass per unit quantity of components. The material type 123c is information indicating the type of material of the part. The material mass 123d is information indicating the mass of the material included in the part related to the unit quantity. In the material information 123, one part number 123a is associated with a combination of one or more material types 123c and a material mass 123d.

  In the material information 123 illustrated in FIG. 4, since the part mass 123b for the part whose part number 123a is “Part_2” is “aaag (gram)”, the mass per unit quantity (for example, one) of the part “Part_2” Is “aaag”. Further, information indicating that the part number 123a is “Part_2”, the material type 123c is “polyethylene”, and the material mass 123d is “bbbb (gram)” is associated. This indicates that the part type “Part_2” per unit quantity includes “bbbb (gram)” for the material type “polyethylene”. Similarly, the part “Part_2” includes “cccg (gram)” for “copper” and “ddddg (gram)” for “stainless steel”.

  FIG. 5 is a diagram showing an example of the basic unit environmental load information 124. The basic unit environmental load information 124 includes a basic unit item name 124a, a unit 124b, a load substance 124c, and a load amount 124d. The basic unit item name 124a is information indicating the basic unit item. The unit 124b is information indicating a unit serving as a reference of a part related to the basic unit item name 124a.

  The load substance 124c is information for specifying a load substance generated when the part related to the basic unit item name 124a is produced. The load amount 124d is a value indicating the mass of the load substance generated when producing parts per unit 124b. One or more combinations of the load substance 124c and the load amount 124d are associated with the basic unit item name 124a.

  Referring to the basic unit environmental load information 124 illustrated in FIG. 5, since the unit 124b is “g” (gram), when producing 1 gram of a part whose basic unit item name 124a is “copper coated wire”, It can be seen that the substance having the load substance 124c of “CO2” generates “eeeg” (gram) indicated by the load 124d. Similarly, “NO2” generates “fffg” (grams) when the same part is produced.

  FIG. 6 is a diagram illustrating an example of the basic unit production process information 125. The basic unit production process information 125 includes a basic unit item name 125a, a parent process 125b, and a child process 125c. The basic unit item name 125a is information indicating the basic unit item.

  The parent process 125b and the child process 125c are information indicating products generated when the parts related to the basic unit item name 125a are produced. The product associated with the parent process 125b occurs after the product associated with the associated child process 125c. One or more combinations of the parent process 125b and the child process 125c are associated with one basic unit item name 125a.

  In other words, by referring to the parent process 125b and the child process 125c associated with a predetermined basic unit item name 125a, the generation order of intermediate products generated when the parts related to the basic unit item name 125a are produced is determined. It can be specified. Of the intermediate products associated with the basic unit item name 125a, the intermediate product with the latest generation order has the highest hierarchy. Therefore, it can be said that the basic process information includes information indicating the order of production as an attribute of the intermediate product.

  In the basic unit production process information 125 shown in FIG. 6, when producing parts whose basic unit item name 125a is “copper coated wire”, at least “crude copper”, “electric copper”, “ It shows that "copper rough drawing line" occurs. Similarly, when producing a part whose basic unit item name 125a is “optical fiber cable”, it indicates that at least “silica stone” and “optical fiber core wire” are generated in the order of occurrence. In the basic unit production process information 125 of FIG. 6, the intermediate product related to the highest parent process 125b is the same as the related basic unit item name 125a.

  FIG. 7 is a diagram illustrating an example of the basic unit candidate information 126. The basic unit candidate information 126 includes a component type 126a and a basic unit item name 126b. The component type 126 a is information indicating the component type, and corresponds to the component type 122 b of the attribute design information 122. The basic unit item name 126 b is information indicating a basic unit item, and corresponds to the basic unit item name 124 a of the basic unit environmental load information 124 and the basic unit item name 125 a of the basic unit production process information 125. The basic unit item name 126b indicates a candidate for a basic unit item to be associated with a component related to the component type 126a. Since there are one or more basic unit item candidates for one component type, one or more basic unit item names 126b are associated with one component type 126a.

  In the basic unit candidate information 126 illustrated in FIG. 7, the basic unit item candidates whose basic unit item 126b is “copper coated wire” and “optical fiber cable” are associated with the component whose component type 126a is “cable”. It has been.

  Next, a hardware configuration example of the environmental load evaluation apparatus 100 will be described.

  FIG. 8 is a diagram illustrating a hardware configuration example of the environmental load evaluation apparatus 100. The environmental load evaluation device 100 includes an arithmetic device 151, a memory 152, an external storage device 153, an input device 154, an output device 155, a communication device 156, and a storage medium drive device 157, and each component is connected by a bus.

  The arithmetic device 151 is a central arithmetic device such as a CPU (Central Processing Unit), and executes processing according to a program recorded in the memory 152 or the external storage device 153. Each processing unit constituting the arithmetic processing unit 110 realizes each function by the arithmetic device 151 executing a program.

  The memory 152 is a storage device such as a RAM (Random Access Memory) or a flash memory, and functions as a storage area from which programs and data are temporarily read. The external storage device 153 is a writable and readable storage medium such as an HDD (Hard Disk Drive).

  The input device 154 is a device that receives an input operation from a user, and is, for example, a touch panel, a keyboard, a mouse, a microphone, or the like. The output device 155 is a device that performs output processing of data stored in the environmental load evaluation device 100, and is, for example, a display device such as an LCD (Liquid Crystal Display) or a printer. The input unit 130 can use the input device 154, and the output unit 140 can use the output device 155.

  The communication device 156 is a device for connecting the environmental load evaluation device 100 to a network, and is a communication device such as a LAN (Local Area Network) card, for example. The storage medium driving device 157 is a device that inputs and outputs information from a portable medium 158 such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).

  The function of the storage unit 120 is realized by the memory 152 or the external storage device 153. The function of the storage unit 120 may be realized by a storage device on the network.

  Note that the processing of each component of the environmental load evaluation device 100 may be executed by a single piece of hardware, or may be executed by a plurality of pieces of hardware. The processing of each component of the environmental load evaluation device 100 may be realized by one program or a plurality of programs.

  Next, environmental load evaluation processing will be described.

  FIG. 9 is a flowchart showing the flow of the environmental load evaluation process. This process is started, for example, when an input of an environmental load calculation instruction in which a component for calculating the environmental load is designated is received.

  First, the environmental load evaluation unit 113 refers to the structural design information 121 and extracts a component part of the designated part (step S10). The environmental load evaluation unit 113 refers to the structural design information 121 and identifies the child part number 121b associated with the parent part number 121a corresponding to the designated part. Furthermore, the environmental load evaluation unit 113 identifies the child part number 121b whose parent is the identified child part number 121b, thereby extracting the constituent parts of the designated part.

  For example, when the designation of a product whose part number is “Prod_A” is received as a part for calculating the environmental load, the environmental load evaluation unit 113 uses the part as a component based on the structural design information 121 shown in FIG. The parts having the numbers “Part_1”, “Part_2”, and “Part_3” are extracted.

  Next, the environmental load evaluation unit 113 identifies one component among the components extracted in step S10 (step S11).

  Next, the basic unit candidate determination unit 111 extracts, in the basic unit candidate information 126, basic unit item candidates related to the identified component type (step S12). The basic unit candidate determination unit 111 identifies the component type 122b related to the component number 122a of the component identified in step S11 in the attribute setting information. The basic unit candidate determination unit 111 refers to the basic unit candidate information 126 and extracts a basic unit item name 126b associated with the component type 126a corresponding to the specified component type 122b.

  Next, the basic unit candidate determination unit 111 identifies one of the basic unit item candidates extracted in step S12 (step S13).

  Next, the basic unit candidate determination unit 111 calculates the degree of coincidence with the material of the part for the basic unit item candidate specified in step S13 (step S14). This process will be described later.

  Next, the basic unit candidate determination unit 111 associates the basic unit item candidate and the degree of coincidence with the component, and generates coincidence degree information 127 described later (step S15).

  FIG. 12 is a diagram illustrating an example of the coincidence information display screen 141 that displays the coincidence information 127. The coincidence information display screen 141 is one of the screens displayed on the output device 155 by the output unit 140 when the input unit 130 accepts a display instruction, and the coincidence information 127 is displayed.

  The degree of coincidence information 127 is information in which the part number, the basic unit item name, and the degree of coincidence are associated with each other. The basic unit candidate determination unit 111 associates the basic unit item name of the basic unit item candidate specified in step S13 and the matching degree calculated in step S14 with the part number of the component specified in step S11 described above. , The coincidence degree information 127 is generated. By displaying this information on the screen, the user can grasp the degree of coincidence for each basic unit item candidate associated with the part. Therefore, the validity of the basic unit item determined for the part in calculating the environmental load Judgment can be made.

  Returning to FIG. Next, the basic unit candidate determination unit 111 determines whether all of the basic unit item candidates extracted in step S12 have been specified (step S16).

  If the basic unit candidate determination unit 111 does not determine that all of the extracted basic unit item candidates have been specified (“No” in step S16), the basic unit candidate determination unit 111 specifies other basic unit item candidates. (Step S20). Thereafter, the basic unit candidate determination unit 111 advances the processing to step S14.

  When the basic unit candidate determination unit 111 determines that all of the extracted basic unit item candidates have been identified (“Yes” in step S16), the basic unit candidate determination unit 111 selects the basic unit item with the highest degree of matching. Candidates are determined as component unit items (step S17). The basic unit candidate determination unit 111 determines the basic unit item candidate having the highest degree of coincidence among the basic unit item candidates for which the degree of coincidence has been calculated in step S14, as the basic unit item for the part identified in step S11.

  Next, the environmental load evaluation unit 113 calculates the environmental load of the component specified in step S11 (step S18). This process will be described later.

  Next, the environmental load evaluation unit 113 determines whether or not all the parts extracted in step S10 have been specified (step S19).

  If the environmental load evaluation unit 113 does not determine that all of the extracted components have been specified (in the case of “No” in step S19), the environmental load evaluation unit 113 specifies other components among the components extracted in step S10. (Step S21). Then, the environmental load evaluation part 113 advances a process to step S12.

  When the environmental load evaluation unit 113 determines that all the extracted parts have been specified (in the case of “Yes” in step S19), the environmental load evaluation unit 113 adds the calculated environmental loads of the component parts. The environmental load of the component constituted by is calculated (step S17). Since the environmental load is calculated in step S18 for all the component parts extracted in step S10, the environmental load evaluation unit 113 adds the environmental loads of the component parts to add the environmental load of the parts configured by the component parts. Is calculated. Thereafter, the environmental load evaluation unit 113 ends the process of this flowchart.

  According to the present embodiment, even if the basic unit item for a part is not uniquely determined in advance, the basic unit item according to the material can be determined by calculating the degree of coincidence using the material of the part. Thereby, the environmental load according to components can be obtained appropriately using this basic unit item.

  FIG. 10 is a flowchart showing the flow of the matching degree calculation process. This process is a process performed in step S14 shown in FIG.

  First, the degree-of-match calculation unit 112 specifies an intermediate product of the specified basic unit item candidate (step S1401). Specifically, the coincidence degree calculation unit 112 refers to the basic unit production process information 125, and selects the parent process 125b and the child process 125c associated with the basic unit item name 125a corresponding to the basic unit item candidate specified in step S13. By specifying, one or more intermediate products of basic unit item candidates are specified. In addition, the coincidence degree calculation unit 112 identifies a hierarchy indicating the order of production for each identified intermediate product, and stores it in an area (not shown) of the storage unit 120 in association with the intermediate product.

  For example, when “copper coated wire” is specified as the basic unit item candidate, the coincidence calculation unit 112 refers to the basic unit production process information 125 shown in FIG. "Copper rough wire", "Electric copper", and "Coarse copper" are specified as intermediate products related to. Further, the coincidence calculation unit 112 identifies the “copper rough drawing line” layer as “1”, the “electro-copper” layer as “2”, and the “coarse copper” layer as “3”, and stores them in the storage unit 120. Let

  Next, the coincidence calculation unit 112 refers to the material information 123 and extracts the material of the part (step S1402). The degree of coincidence calculation unit 112 extracts one or more material types 123c corresponding to the part specified in step S11 and the material information 123 as the material of the part. For example, when the part identified in step S11 is “Part_2”, the coincidence calculation unit 112 extracts “polyethylene”, “copper”, and “stainless steel” as the material of the part based on the material information 123 shown in FIG. .

  Next, the coincidence calculation unit 112 identifies one of the materials extracted in step S1402 (step S1403).

  Next, the coincidence calculation unit 112 identifies the highest product among the intermediate products including the character string indicating the material identified in step S1402 (step S1404). Specifically, the degree-of-match calculation unit 112 determines whether or not to include the character string indicating the material in order from the upper intermediate product among the intermediate products identified in step S1402. The highest intermediate product is specified among the intermediate products to be included. In addition, the coincidence calculation unit 112 specifies the hierarchy of the specified intermediate product.

  This will be described using the example shown in FIG. For example, when the basic unit item candidate specified in step S13 is “copper-coated wire” and “copper” is specified in step S1403, the coincidence degree calculation unit 112 sets “copper rough” Specify "drawing line". Since the “copper rough drawing line” includes the character string “copper” indicating the material, the coincidence calculation unit 112 identifies “copper rough drawing line” as the highest intermediate product, and is stored in the storage unit 120. In addition, “1” is specified as the hierarchy of the “copper rough wire”.

  Next, the coincidence calculation unit 112 generates production process determination information 128 using the identified intermediate product and hierarchy (step S1405).

  FIG. 13 is a diagram illustrating an example of the production process determination result display screen 142. The production process determination result display screen 142 is a screen for displaying the production process determination information 128 generated in step S1405, and is a screen displayed by the output unit 140 when the input unit 130 receives an input of a display instruction. One.

  The production process determination information 128 is information in which a part number, a material type, a basic unit item name, an intermediate product, and a hierarchy are associated with each other. The degree of coincidence calculation unit 112 includes the part specified in step S11, the material specified in step S1403, the basic unit item candidate specified in step S12, the intermediate product specified in step S1404, and the hierarchy of the intermediate product. And the production process determination information 128 is generated. By displaying this information, the user can grasp what kind of information is used to determine the basic unit item for the part for calculating the environmental load. The user can recognize the basis for determining a predetermined basic unit item for a part by referring to materials and intermediate products associated with higher levels. In addition, for example, when a character string indicating a predetermined material is not included in the intermediate product, the validity of the determination of the basic unit item can be confirmed.

  Returning to FIG. Next, the coincidence degree calculation unit 112 determines whether all of the materials extracted in step S1402 have been specified (step S1406).

  If the coincidence calculation unit 112 does not determine that all extracted materials have been identified (“No” in step S1406), the coincidence calculation unit 112 identifies other materials (step S1408). Thereafter, the coincidence degree calculation unit 112 advances the processing to step S1404.

  When it is determined that the degree of coincidence calculation unit 112 has identified all of the extracted materials (“Yes” in step S1406), the degree of coincidence calculation unit 112 calculates the number of points assigned to the identified intermediate product hierarchy. Using this, the degree of coincidence of the basic unit item candidates is calculated (step S1407). In the storage unit 120, points are determined in advance for the intermediate product hierarchy. For example, the score of the intermediate product with the hierarchy “1” is 9 points, the score of the intermediate product with the hierarchy “2” is 5, and the score of the intermediate product with the hierarchy “3” is 1.

  In the above-described production process information, since the hierarchy of the intermediate product is associated for each material of the part in step S1402, the coincidence calculation unit 112 adds the scores corresponding to the hierarchy associated with the extracted material. By doing so, the degree of coincidence of the parts related to the basic unit item candidate is calculated.

  For example, when the part number is “Part_2” and the basic unit item candidate is “copper-coated wire”, according to the example of the material information 123 shown in FIG. 4, the material extracted in step S1402 is “polyethylene”, “ "Copper" and "Stainless steel". As described above, since the hierarchy associated with the material “copper” is “1”, the score is nine points. Similarly, in the example of the basic unit production process information 125 shown in FIG. 6, for the parent process 125b and the child process 125c whose basic unit item name 125a is related to “copper coated wire”, a character string indicating “polyethylene” of the material, The character string indicating “stainless steel” is not included. Therefore, the score for “polyethylene” and “stainless steel” is 0 points. The coincidence degree calculation unit 112 sums up these points to obtain a value of 9 points as the coincidence degree. Thereafter, the coincidence degree calculation unit 112 advances the processing to step S15.

  The score is set to be higher as the hierarchy is higher. This is because the material contained in the intermediate product at the higher level is more likely to be a material that has a closer influence on the parts related to the basic unit item. This is because it is more appropriate to specify the basic unit of parts.

  With this process, it is possible to obtain an index of how much the material of the part matches the basic unit item candidate for the part for which the environmental load is to be calculated. Based on this index, the basic unit item of the part is determined, and the environmental load of the part is calculated using the determined basic unit item. That is, even if information on the basic unit item of the part is not obtained in advance, the basic unit item can be objectively determined based on the material of the part.

  FIG. 11 is a flowchart showing the flow of the environmental load calculation process. This process is a process performed in step S18 shown in FIG.

  The environmental load evaluation unit 113 calculates the activity amount of the part (step S1801). The amount of activity of a part is obtained by the following (Formula 2).

  Activity amount = part mass x number of parts ... (Formula 2)

  The component mass is specified from the material information 123. The environmental load evaluation unit 113 identifies the component mass 123b associated with the component number 123a corresponding to the component identified in step S11. In addition, the environmental load evaluation unit 113 refers to the structural design information 121 and identifies the number 121c associated with the child part number 121b corresponding to the part identified in step S11. Using the above information, the environmental load evaluation unit 113 calculates the activity amount of the part.

  Next, the environmental load evaluation unit 113 refers to the basic unit environmental load information 124 and calculates the environmental load related to the load substance by multiplying the load amount and the activity amount for each load substance related to the basic unit item of the part. (Step S1802). According to the above (Equation 1), the environmental load is a value obtained by multiplying the amount of activity and the basic unit. The environmental load evaluation unit 113 refers to the basic unit environmental load information 124 and extracts one or a plurality of load substances 124c related to the basic unit item name 124a corresponding to the basic unit item of the part determined in step S16. The environmental load evaluation unit 113 identifies one of the extracted load substances 124c, and multiplies the load quantity 124d associated with the identified load substance 124c by the activity amount obtained in step S1801 to determine the identified load substance 124c. Calculate the environmental impact. When there are a plurality of extracted load substances 124c, the environmental load evaluation unit 113 calculates the environmental load for each load substance.

  Next, the environmental load evaluation unit 113 associates the environmental load substance with the environmental load amount, and generates environmental load evaluation information 129 (step S1803). The environmental load evaluation unit 113 generates environmental load evaluation information 129 by associating the environmental load amount, which is the calculated environmental load value, with each load substance for which the environmental load has been calculated in step S1802. Then, the environmental load evaluation part 113 advances a process to step S19.

  FIG. 14 is a diagram illustrating an example of the environmental load evaluation result display screen 143. The environmental load evaluation result display screen 143 is a screen for displaying the environmental load evaluation information 129 generated in step S1803 described above, and is a screen displayed by the output unit 140 when the input unit 130 receives a display instruction. One. The environmental load evaluation information 129 is information associating an environmental load substance contained in a specific part with a calculated amount of environmental load.

  As described above, according to the present embodiment, even if the part and the basic unit item are not paired in advance, the basic unit item is determined based on the type of the part and the material. Further, by calculating the degree of coincidence with the basic unit item candidate using the material of the part and determining the basic unit item based on the degree of coincidence, the basic unit item that is more likely to be related to the part is specified. It is possible to evaluate the environmental load appropriately. In addition, the above-described material information 123 is highly likely to be obtained from a supplier in advance for the use of a part, particularly in the case of a purchased part. Therefore, the basic unit item related to the part is specified using the information. Thus, it is possible to save the man-hours for generating information for newly specifying the basic unit item, which is efficient.

  As mentioned above, although each embodiment and modification which concern on this invention have been demonstrated, this invention is not limited to an example of above-described embodiment, Various modifications are included. For example, the above-described exemplary embodiment has been described in detail for easy understanding of the present invention, and the present invention is not limited to the one having all the configurations described here. A part of the configuration of an example of an embodiment can be replaced with the configuration of another example. Moreover, it is also possible to add the structure of another example to the structure of an example of a certain embodiment. In addition, for a part of the configuration of an example of each embodiment, another configuration can be added, deleted, or replaced. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. In addition, the control lines and information lines in the figure indicate what is considered necessary for the description, and do not necessarily indicate all of them. It can be considered that almost all configurations are connected to each other.

  In addition, the functional configuration of the environmental load evaluation apparatus 100 is classified according to main processing contents in order to facilitate understanding. The present invention is not limited by the way of classification and names of the constituent elements. The configuration of the environmental load evaluation device 100 can be classified into more components according to the processing content. Moreover, it can also classify | categorize so that one component may perform more processes.

  DESCRIPTION OF SYMBOLS 100: Environmental load evaluation apparatus, 110: Arithmetic processing part, 111: Basic unit candidate determination part, 112: Concordance degree calculation part, 113: Environmental load evaluation part, 120: Storage part, 121: Structural design information, 122: Attribute design Information, 123: material information, 124: basic unit environmental load information, 125: basic unit production process information, 126: basic unit candidate information, 127: coincidence degree information, 128: production process determination information, 129: environmental load evaluation information, 130: input unit, 140: output unit, 141: coincidence information display screen, 142: production process determination result display screen, 143: environmental load evaluation result display screen

Claims (10)

Material information related to the material of the part, basic unit candidate information associated with a basic unit item candidate that is an item of the basic unit of environmental load according to the part, and the basic unit item according to the basic unit item A storage unit for storing production process information associated with a product including an intermediate product when producing the part;
For each of the basic unit item candidates associated with a predetermined part in the basic unit candidate information, a match between the material of the part and the product associated with the basic unit item candidate in the production process information A degree-of-match calculator that calculates the degree;
An environmental load evaluation unit that calculates the environmental load of the part related to the basic unit item determined using the degree of coincidence;
An environmental load evaluation apparatus comprising: The environmental load evaluation device according to claim 1,
In the material information, a character string indicating a material and a part are associated,
The production process information includes a name of the product and an attribute of the product,
The degree of coincidence calculation unit calculates the degree of coincidence using an attribute of the product that includes the character string in the name of the product. The environmental load evaluation device according to claim 2,
The attribute of the product is information indicating the order in which the product is produced,
The degree of coincidence calculation unit specifies the order of products that include the character string in the name of the product, and calculates the degree of coincidence using a score corresponding to the order. . The environmental load evaluation device according to claim 3,
The degree of coincidence calculation unit calculates the degree of coincidence by adding the points set higher as the order is slower,
The environmental load evaluation unit calculates the environmental load of the part related to the candidate of the basic unit item having a higher degree of coincidence determined as the basic unit item. The environmental load evaluation device according to claim 1,
The storage unit stores basic unit environmental load information in which a load substance and a load amount are associated according to the basic unit item,
The environmental load evaluation unit calculates the environmental load by using the determined load unit item, the load substance and the load amount associated in the basic unit environmental load information. apparatus. The environmental load evaluation device according to claim 5,
The environmental load evaluation unit, for each of the load substances, the environment of the load substance calculated by multiplying the load amount, the mass of the part related to the determined basic unit item, and the number of parts. An environmental load evaluation apparatus that calculates an environmental load of a component related to the basic unit item based on a load. The environmental load evaluation device according to claim 1,
An output unit for outputting a production process determination result screen that displays a character string indicating the material of the predetermined part, a name of the product including the character string, and information indicating an order in which the product is produced An environmental load evaluation apparatus comprising: The environmental load evaluation device according to claim 7,
The output unit displays an coincidence degree information display screen that displays the degree of coincidence calculated for each candidate for the basic unit item in the coincidence degree calculation unit. The environmental load evaluation device according to claim 1,
It has an input unit that accepts input of environmental load evaluation instructions that specify products,
The coincidence calculation unit calculates the coincidence for the parts constituting the product,
The environmental load evaluation unit calculates the environmental load of the product using the environmental load calculated for the component. Material information on the material of the part stored in the storage unit, basic unit candidate information associated with a basic unit item that is an item of basic unit of environmental load according to the part, and according to the basic unit item The production unit information associated with a product including an intermediate product when producing the part relating to the basic unit item, and the basic unit item associated with a predetermined part in the basic unit candidate information A degree of coincidence calculation procedure for calculating a degree of coincidence between the material of the part and the product associated with the basic unit item candidate in the production process information;
An environmental load evaluation procedure for calculating the environmental load of the part related to the basic unit item determined using the degree of coincidence;
Environmental load evaluation method characterized by comprising.

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