Life cycle evaluation method and device
Patent Information
- Application Number
- CN202280098700.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-08-31
- Publication Date
- 2025-03-25
AI Technical Summary
Existing life cycle assessment methods require experts to spend a lot of time modeling one by one when assessing the environmental impact of multiple products, and the modeling results of similar products are not comparable and cannot provide evaluation or product selection for the government or consumers. reference.
By establishing a general parametric LCA model for similar products, experts only need to build an LCA model once for a representative product, and then parameterize it to generate a general LCA model for similar products, which non-professional users can use for environmental impact assessment.
It reduces the difficulty and time of modeling similar products, improves modeling efficiency, and makes the environmental impact assessment results of similar products comparable.
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Figure CN119698622A_ABST
Abstract
Description
A method and device for life cycle assessment Technical Field
[0001] The present application relates to the technical field of life cycle assessment, and more particularly, to a method and apparatus for life cycle assessment. Background Art
[0002] Life cycle assessment (LCA) can be used to evaluate the environmental impact of a product or service throughout its entire life cycle. When assessing the environmental impact of multiple products, experts spend a considerable amount of time modeling each product individually. Furthermore, for similar products, the modeling is performed by different individuals, making the resulting Environmental Product Certification (EPD) incomparable and unable to provide a reference for governments or consumers in evaluating or selecting products.
[0003] Therefore, there is an urgent need for an effective life cycle assessment method that can reduce the difficulty and time of modeling.
[0004] Summary of the Invention
[0005] The embodiments of the present application provide a method and apparatus for life cycle assessment (LCA), which can provide a universal parameterized LCA model for similar products, thereby reducing the difficulty of modeling similar products and shortening the modeling time.
[0006] In a first aspect, a method for life cycle assessment (LCA) is provided, comprising: obtaining an LCA model of a representative product among similar products, wherein the similar products are products that implement the same function; determining a parameter set in the LCA model of the representative product and a relationship between the parameter set and an LCA result; setting parameters in the parameter set that cannot be obtained from original data of the representative product as independent parameters, and setting parameters in the parameter set that cannot be obtained from the original data of the representative product as dependent parameters, so as to obtain a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating the dependent parameters from the independent parameters, and a relationship between the parameter set and the LCA result.
[0007] Through this implementation method, experts only need to build an LCA model for a representative product of the same category once, and then parameterize the LCA model to obtain a universal LCA model for similar products. In this way, non-professional users can use the universal LCA model to evaluate the environmental impact of any product of the same category, which can reduce the difficulty of modeling similar products and shorten the modeling time.
[0008] In a second aspect, a device for life cycle assessment (LCA) is provided, comprising: an acquisition unit for acquiring an LCA model of a representative product among similar products, wherein the similar products are products that implement the same functions; a processing unit for determining a parameter set in the LCA model of the representative product and a relationship between the parameter set and the LCA results; setting parameters in the parameter set that are acquired from the original data of the representative product as independent parameters, and setting parameters in the parameter set that cannot be acquired from the original data of the representative product as dependent parameters, so as to obtain a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating the dependent parameters from the independent parameters, and a relationship between the parameter set and the LCA results.
[0009] In a third aspect, a device for life cycle assessment (LCA) is provided, comprising a memory for storing a program; and a processor for executing the program stored in the memory. When the program stored in the memory is executed, the processor is used to execute the above-mentioned LCA method.
[0010] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores program code for execution by a device, wherein the program code includes instructions for executing the steps in the above-mentioned LCA method. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG1 is a schematic diagram of the structure of a life cycle assessment framework according to an embodiment of the present application.
[0012] FIG2 is a schematic flow chart of a life cycle assessment method according to an embodiment of the present application.
[0013] FIG3 is a schematic block diagram of the life cycle stages and system boundaries of a product according to an embodiment of the present application;
[0014] FIG4 is a schematic block diagram of a life cycle assessment device according to an embodiment of the present application.
[0015] FIG5 is a schematic diagram of the structure of a life cycle assessment device according to an embodiment of the present application
[0016] List of reference numerals:
[0017] 110, determination of objectives and scope;
[0018] 120, Inventory Analysis;
[0019] 130, impact assessment;
[0020] 140, explanation;
[0021] 210, obtaining the LCA model of a representative product in the same category;
[0022] 220, determining a parameter set in the LCA model of the representative product and a relationship between the parameter set and the LCA result;
[0023] 230, setting the parameters in the parameter set obtained from the original data of the representative product as independent parameters, and setting the parameters in the parameter set that cannot be obtained from the original data of the representative product as dependent parameters, so as to obtain a parameterized LCA model of the similar products;
[0024] 240, obtaining original data of the first product among the same type of products;
[0025] 250. Acquire, from original data of the first product, values corresponding to the independent parameters of the parameterized LCA model.
[0026] 260. Determine a value corresponding to the dependent parameter of the first product based on the value corresponding to the independent parameter of the first product and the formula;
[0027] 270. Use the parameterized LCA model according to the values corresponding to the independent parameters of the first product and the values corresponding to the dependent parameters of the first product to obtain an LCA result for the first product.
[0028] 301, extraction of raw materials;
[0029] 302, transportation;
[0030] 303, processing;
[0031] 304, assembly or production;
[0032] 305, product operation or use;
[0033] 306, product maintenance;
[0034] 307, disassembly;
[0035] 308, recycling or reuse;
[0036] 310, cradle to door (assembly);
[0037] 320, cradle to door (product);
[0038] 330, Cradle to Grave;
[0039] 400, life cycle assessment device;
[0040] 410, obtain unit;
[0041] 420, processing unit;
[0042] 500, life cycle assessment device;
[0043] 501, memory;
[0044] 502, processor;
[0045] 503, communication interface;
[0046] 504, bus. DETAILED DESCRIPTION
[0047] The following will describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. It should be understood that the specific examples in this specification are only intended to help those skilled in the art better understand the embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application.
[0048] It should be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0049] It should also be understood that the various implementation methods described in this specification can be implemented individually or in combination, and the embodiments of the present application are not limited to this.
[0050] Unless otherwise specified, all technical and scientific terms used in the embodiments of the present application have the same meaning as those commonly understood by those skilled in the art in the art of the present application. The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the scope of this application.
[0051] With growing awareness of environmental protection and a growing understanding of the potential environmental impacts of product production and consumption, people are seeking to develop methods to understand and account for these impacts. Life Cycle Assessment (LCA) is a technology that has emerged to this end. LCA analyzes the environmental impacts of a product's life cycle, from raw materials, production, use, end-of-life treatment, recycling, and final disposal (i.e., cradle to grave). The ISO standard summarizes the basic structure of LCA into four interconnected parts.
[0052] Figure 1 shows an LCA framework applicable to an embodiment of the present application, which includes determination of purpose and scope 110, inventory analysis 120, impact assessment 130, and interpretation 140. Determination of purpose and scope 110 is used to determine the evaluation objectives of the LCA, and then define the product's functions, functional units, system boundaries, environmental impact types, etc. based on the evaluation objectives; the task of inventory analysis 120 is to collect data and, through some calculations, provide the input and output of each life cycle stage of the product as a basis for the subsequent impact assessment 130 stage; interpretation 140 analyzes and explains the impact assessment results, identifies the product's weak links and potential improvement opportunities, and proposes improvement suggestions to achieve the product's ecological optimization goal.
[0053] During the inventory analysis 120 phase, to study the inputs and outputs of each product life cycle, an LCA model can be established to quantify the relevant inputs and outputs of the product system. Prior art LCA models can be built using the life cycle inventory (LCI) database and various unit process modules integrated into the LCA software. However, the LCI database contains a large number of similar datasets. These datasets vary for different products in terms of name, representative region, technology route, or product allocation. The choice of these datasets depends on the modeling user; and when modeling a product, the user must also select multiple unit processes related to the product.
[0054] In other words, users must be experts with expertise in LCA to select appropriate data sets and unit process modules to build LCA models for product systems. When studying the environmental impacts of multiple products, experts need to spend a considerable amount of time modeling each product individually. Furthermore, for similar products, different modelers often create different LCA reports or Environmental Product Declarations (EPDs) based on the models, making them incomparable and unable to provide a reference for governments or consumers to evaluate or select products. The EPD is a document based on LCA theory that discloses product environmental information and serves as a measure of a product's green and low-carbon status.
[0055] In view of this, an embodiment of the present application proposes a method for life cycle assessment (LCA), which can parameterize the LCA model of representative products in the same category and establish a common LCA model for similar products, thereby reducing the difficulty of modeling similar products and shortening the modeling time.
[0056] FIG2 shows a method 200 for life cycle assessment according to an embodiment of the present application. The method 200 includes at least the following steps 210 - 230 .
[0057] 210. Obtain an LCA model of a representative product of the same type of products, where the same type of products are products that implement the same function.
[0058] In the embodiments of the present application, similar products may also be referred to as product series or product families, which is a general term for products with a large number of identical or similar features. They can be used to represent products that achieve the same functions. These similar products may have similar designs, materials used, performance characteristics, etc.
[0059] Representative products are those with the most shared features among similar products. Shared features can be understood as shared parameters or attributes, including but not limited to the type of materials used in the product, the manufacturing steps used for component production and product manufacturing, the product's energy efficiency and power consumption; operating mode (e.g., time load, energy efficiency, operating cycle, etc.); transportation method (truck, air, ship, etc.); recycling technology routes and efficiency, etc.
[0060] It should be noted that the representative product includes the most common functions of similar products, which does not mean that the parameter values of the common functions of the representative product and other products of the same type are equal. The parameter values of the common functions of the representative product and other products of the same type may be completely different or partially different, and this application does not limit this.
[0061] In the embodiment of the present application, the LCA model representing the product can be established on LCA software, and the LCA software can be, for example, Gabi, SimonPro, openLCA, etc.
[0062] Specifically, experts can establish an LCA model for a representative product of the same type on the LCA software to obtain an LCA model of the representative product.
[0063] 220 , determining a parameter set in the LCA model representing the product and a relationship between the parameter set and the LCA result.
[0064] LCA results refer to the results obtained by inputting the corresponding parameter values for each parameter in the parameter set into the LCA model and then analyzing the relationship between the parameter set and the LCA results. LCA results can include the environmental emissions of a product, such as air pollutants, water pollutants, and solid pollutants emitted into the atmosphere, water bodies, and soil.
[0065] In one embodiment, the parameter set can be determined by identifying parameters in the LCA model of the representative product that differ from the parameter values of other products in the same product category, excluding the representative product. For example, the parameter set may include the unit weight of the first component of the product, the number of first components, the total weight of the first components, the annual operating hours, the energy loss under full load, the energy loss over the lifespan, and the like. The parameters in the parameter set may have different values for different products in the same product category.
[0066] 230. Setting the parameters in the parameter set obtained from the original data of the representative product as independent parameters, and setting the parameters in the parameter set that cannot be obtained from the original data of the representative product as dependent parameters, to obtain a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating the dependent parameters from the independent parameters, and a relationship between the parameter set and the LCA results.
[0067] Specifically, the parameters in the parameter set of the LCA model representing the product that are obtained from the original data representing the product are set as independent parameters, and the parameters that cannot be obtained from the original data representing the product are set as dependent parameters, wherein the dependent parameters can be calculated from the independent parameters.
[0068] For example, taking the parameter set in the above example, the unit weight of the first component and the quantity of the first component in the parameter set can be set as independent parameters, and the values of these two parameters can be obtained from the original data of the product, such as from the bill of materials of the enterprise that produces the representative product; the total weight of the first component can be set as a non-independent parameter, and the value of this parameter cannot be directly obtained from the original data of the product, but needs to be calculated through independent parameters (unit weight of the first component, quantity of the first component), and the calculation formula is unit weight of the first component × quantity of the first component.
[0069] Once the relationship between the parameter set representing the product and the LCA results, as well as the formula for calculating dependent parameters from independent parameters, is obtained, a parameterized LCA model for similar products can be established based on this relationship between the parameter set representing the product and the LCA results, as well as the formula for calculating dependent parameters from independent parameters. When studying the environmental impact of similar products, simply input the parameter values corresponding to the parameter set related to the similar products into the parameterized LCA model to obtain the environmental impact of the similar products. The parameter value input process can be performed by non-professional users, who can obtain the corresponding parameter values from the raw data of similar products based on the parameters in the parameter set.
[0070] Through this implementation method, experts only need to build an LCA model for a representative product in the same category once, and then parameterize the LCA model to obtain a universal LCA model for similar products. In this way, non-professional users can use the universal LCA model to evaluate the environmental impact of any product in the same category, which can reduce the difficulty of modeling similar products and shorten the modeling time.
[0071] In some implementations, the LCA method 200 may further include the following steps:
[0072] 240, obtaining original data of the first product.
[0073] Among them, the first product is any product of the same type except the representative product.
[0074] In one implementation, non-professionals can obtain data on each life cycle stage of the first product from the bill of materials (BOM), bill of processes (BOP), and supplier management system (software platform for business operations management, SAP) of the enterprise that produces the first product to obtain the original data of the first product.
[0075] 250. According to the independent parameters of the parameterized LCA model, obtain values corresponding to the independent parameters of the first product from the original data of the first product.
[0076] It should be understood that the parameter set in a parameterized LCA model includes independent parameters and dependent parameters. When calculating the LCA results for a first product, the values corresponding to the independent parameters in the LCA model for the first product must first be obtained. In one implementation, a non-professional user can obtain the values corresponding to the independent parameters from the raw data of the first product based on the independent parameters in the parameterized LCA model.
[0077] 260. Calculate the value corresponding to the dependent parameter of the first product according to the value corresponding to the independent parameter of the first product and the formula.
[0078] Specifically, the parameterized LCA model includes formulas for calculating dependent parameters from independent parameters. Therefore, non-professionals only need to input the values corresponding to the independent parameters of the first product into the parameterized LCA model in the LCA software through the user interaction interface. The parameterized LCA model can automatically calculate the corresponding values of the dependent parameters of the first product based on the formulas and the values corresponding to the independent parameters of the first product.
[0079] 270. Use a parameterized LCA model according to the values corresponding to the independent parameters of the first product and the values corresponding to the dependent parameters of the first product to obtain an LCA result for the first product.
[0080] Specifically, when the values corresponding to the independent parameters and the values corresponding to the dependent parameters of the first product are obtained, the values corresponding to the parameter set of the first product can be known. By using the relationship between the parameter set and the LCA results in the parameterized LCA model, the LCA results of the first product, that is, the impact of the first product on the environment, can be obtained.
[0081] Therefore, when studying the environmental impact of a first product within a similar product category, non-professionals do not need to build an LCA model for the first product. Instead, they can simply calculate the environmental impact of the first product using steps 240-270, thereby reducing the time required to model each product within the same category. Furthermore, using the same LCA model for each product within the same category ensures comparability of the results.
[0082] In some embodiments, before using the parameterized LCA model to obtain an LCA result for the first product based on the values corresponding to the independent parameters of the first product and the values corresponding to the dependent parameters of the first product in step 270, method 200 may further include: obtaining a system boundary of the first product, where the system boundary includes at least one life cycle stage.
[0083] In the embodiment of the present application, the system boundary of the first product is which life cycle stages of the first product need to be studied for their impact on the environment.
[0084] In some embodiments, the life cycle stages of a product may include a production stage, a usage stage, and a disposal stage.
[0085] It should be noted that the above three stages are only one way of dividing the life cycle stages. The life cycle stages can also be divided into other different stages, and this application does not limit this.
[0086] For example, when the system boundary of the first product includes the production stage, that is, cradle to gate, the LCA model of the first product established studies the impact of the first product on the environment during the production stage.
[0087] Therefore, in this embodiment of the present application, users can flexibly set or select the system boundary of the first product based on their research needs. Specifically, when inputting the independent parameters of the first product, only the independent data of the life cycle stages within the system boundary are input into the parameterized LCA model to obtain the LCA results of the first product within the system boundary.
[0088] In some embodiments, the LCA model of the representative product can be obtained in step 210 in the following manner: the LCA model of the representative product is established based on the relationship between each life cycle stage of the representative product, the relationship between each unit process in each life cycle stage, and the input flow data and output flow data of each unit process.
[0089] In an embodiment of the present application, the life cycle stages of a product may include a production stage, a use stage, and a scrapping stage. The production stage may, for example, include unit processes such as raw material extraction and manufacturing, material processing into components, component assembly production, material transportation, internal product manufacturing and / or assembly, and product transportation to a distribution point or customer; the use stage may, for example, include unit processes such as product use, product transportation to a product disassembly and recycling site; the scrapping stage may, for example, include unit processes such as disassembly and recycling, reuse of related materials and components, recycling, incineration, and landfill. Each unit process has input flow data and output flow data. The input flow data may be the input data of the unit process, such as the bill of materials for raw materials, the bill of materials for components, etc.; the output flow data may be the data output by the unit process, such as the generated components, products, sub-products, waste materials, etc.
[0090] After obtaining the input flow data and output flow data of each life cycle unit process, an LCA model framework can be established based on the relationship between each life cycle stage of the product and the relationship between each unit process. The input flow data and output flow data of each unit process can be associated with the corresponding unit process to obtain an LCA model representing the product.
[0091] To facilitate understanding of the process of establishing an LCA model for a product, an embodiment of the present application provides a schematic block diagram of a product's life cycle stages and system boundaries.
[0092] As shown in Figure 3, various raw materials can be obtained from the natural environment through various raw material extraction processes 301. Some of these raw materials need to be transported to a factory for processing 303 before they can be formed into the components needed to manufacture various products. Other raw materials do not require processing and can be used directly as components for subsequent assembly or production 304. The components are transported to a factory for assembly or production 304, thus forming the product. During operation or use 304, the product may require product maintenance 306. When the product reaches the end of its service life or is unusable, it is transported to a scrapping plant for recycling or reuse 308. Some products may need to be disassembled 307 before they can be recycled or reused 308, thus completing the product's life cycle.
[0093] Among them, from the perspective of system boundaries, the process from raw materials to components can be seen as from cradle to door (component) 310, the process from raw materials to products can also be seen as cradle to door (product) 320, and the process from raw materials to the end of life can be seen as cradle to grave 330; from the perspective of the life cycle, the entire process from raw materials to products is the production stage 340 of the product, the operation or use and maintenance of the product are the use stage 350 of the product, and the disassembly, recycling or reuse of the product are the scrap stage 360 of the product.
[0094] Taking the life cycle of a miniature circuit breaker as an example, raw material extraction 301 includes steps such as resource extraction, refining, and material production; processing 303 includes the metals and alloys obtained in step 301 being rolled into thin sheets, die-casted, extruded, drawn, pressed, and coated to form polymers, and then the polymers are injection molded and cast to form components; the components are transported to the factory for assembly or production 304 to become miniature circuit breakers; miniature circuit breakers generally do not require maintenance and after 20 years of use, they are transported to scrap factories for disassembly, recycling, or reuse.
[0095] Each step of the above-mentioned product, from raw materials to end of life, can be considered a unit process, and each unit process has its corresponding input and output flow data. When building an LCA model for a representative product, LCA software includes multiple unit process modules. Experts can select the unit process module belonging to the representative product in the LCA software and connect all selected unit process modules based on the relationships between the representative product's life cycle and the relationships between unit processes in each life cycle stage. Then, the input and output flow data of each unit process are associated with the corresponding unit process, thus forming an LCA model for the representative product.
[0096] In some embodiments, the input flow data and output flow data of each unit process can be obtained in the following ways: obtaining the original data of each life cycle stage of the representative product from the BOM, BOP and SAP of the enterprise that produces the representative product; obtaining the input flow data and output flow data of each unit process in each life cycle stage based on the original data of each life cycle stage of the representative product, the LCA standard related to the representative product type and the LCI database.
[0097] It should be understood that each lifecycle stage of a representative product involves a large amount of raw data, which can be obtained from the bill of materials (BOMs), bill of operations (BOPs), and SAP of the company that produces the representative product. For example, during the production stage of the representative product, the raw data in the BOM may include data such as component name, material type, unit weight, and quantity of such components used; the raw data in the BOP may include data such as the process or steps for processing raw materials into components; and the raw data in SAP may include data such as supplier location, distance, and transportation method (truck, train, plane, ship).
[0098] Optionally, after obtaining raw data representing each lifecycle stage of a product, the expert can present the raw data in a table or document format to form a bill of materials representing the product. The bill of materials clearly indicates the type of raw data required to facilitate data retrieval and updating.
[0099] After obtaining the raw data representing the product, the raw data is associated with each unit process to obtain the raw data of each unit process. Some of these input and output stream data are raw data representing the product, while some data needs to be calculated based on the raw data.
[0100] Some of the input and output flow data for each unit process is raw data, while others require calculations based on the raw data. Therefore, formulas for calculating some of these data can be obtained from LCA standards and LCI databases related to representative product categories. These formulas can then be used to obtain the input and output flow data for each unit process.
[0101] It should be noted that when the original data of a product is incomplete or unavailable, the LCA standard related to the representative product type and the data in the LCI database can also be used as the input flow data and output flow data of each unit process.
[0102] In some embodiments, after experts establish a parameterized LCA model for similar products in LCA software, they save the parameterized LCA model in the parameterized LCA model pool of the LCA software. When it is necessary to conduct an environmental impact study on similar products of the representative product, the corresponding parameterized LCA model can be selected and used.
[0103] FIG4 shows a schematic block diagram of a device 400 for life cycle assessment (LCA) according to an embodiment of the present application.
[0104] As shown in FIG4 , the LCA apparatus 400 includes:
[0105] The acquisition unit 410 is configured to acquire an LCA model of a representative product of the same type of products, where the same type of products are products that implement the same function.
[0106] The processing unit 420 is configured to determine a parameter set in the LCA model of the representative product and a relationship between the parameter set and the LCA results; set parameters in the parameter set that are obtained from the original data of the representative product as independent parameters, and set parameters in the parameter set that cannot be obtained from the original data of the representative product as dependent parameters, so as to obtain a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating dependent parameters from independent parameters, and a relationship between the parameter set and the LCA results.
[0107] Figure 5 is a schematic diagram of the hardware structure of a life cycle assessment device according to an embodiment of the present application. The life cycle assessment device 500 shown in Figure 5 includes a memory 501, a processor 502, a communication interface 503, and a bus 504. The memory 501, processor 502, and communication interface 503 are interconnected via bus 504.
[0108] The memory 501 may be a read-only memory (ROM), a static storage device, or a random access memory (RAM). The memory 501 may store programs. When the program stored in the memory 501 is executed by the processor 502, the processor 502 and the communication interface 503 are used to perform the various steps of the method for managing and controlling a mobile storage device according to an embodiment of the present application.
[0109] The processor 502 can adopt a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), a graphics processing unit (GPU) or one or more integrated circuits to execute relevant programs to implement the functions required to be performed by the units in the device type identification device of the embodiment of the present application, or to execute the method for mobile storage device management and control of the embodiment of the present application.
[0110] The processor 502 may also be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the mobile storage device management method of the embodiment of the present application may be completed by hardware integrated logic circuits in the processor 702 or software instructions.
[0111] The processor 502 may also be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA), or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.
[0112] The communication interface 503 uses a transceiver device such as, but not limited to, a transceiver to implement communication between the device 500 and other devices or a communication network. For example, traffic data of an unknown device can be obtained through the communication interface 503.
[0113] The bus 504 may include a path for transmitting information between various components of the device 500 (eg, the memory 501 , the processor 502 , and the communication interface 503 ).
[0114] It should be noted that although the above-described apparatus 500 only illustrates a memory, a processor, and a communication interface, those skilled in the art will appreciate that, during implementation, the apparatus 500 may also include other components necessary for normal operation. Furthermore, those skilled in the art will appreciate that, depending on specific needs, the apparatus 500 may also include hardware components that implement other additional functions. Furthermore, those skilled in the art will appreciate that the apparatus 500 may include only the components necessary to implement the embodiments of the present application, and need not include all of the components shown in FIG. 5 .
[0115] An embodiment of the present application further provides a computer-readable storage medium storing program code for execution by a device, wherein the program code includes instructions for executing the steps in the above-mentioned life cycle assessment method.
[0116] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A method of life cycle assessment (LCA), characterized in that: The method comprises: Obtaining (210) an LCA model of a representative product among similar products, wherein the similar products are products that achieve the same function; determining (220) a parameter set in the LCA model representing the product and a relationship between the parameter set and LCA results; The parameters in the parameter set obtained from the original data of the representative product are set as independent parameters, and the parameters in the parameter set that cannot be obtained from the original data of the representative product are set as non-independent parameters to obtain (230) a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating the non-independent parameters from the independent parameters, and a relationship between the parameter set and the LCA results.
2. The method according to claim 1, characterized in that Determining the parameter set in the LCA model of the representative product includes: Parameters in the LCA model of the representative product that are different from parameter values of other products of the same type except the representative product are determined to obtain the parameter set.
3. The method according to claim 1 or 2, characterized in that The method further comprises: Obtaining (240) original data of the first product among the same type of products; According to the independent parameters of the parameterized LCA model, obtaining (250) values corresponding to the independent parameters of the first product from the original data of the first product; deriving (260) a value corresponding to a dependent parameter of the first product based on the value corresponding to the independent parameter of the first product and the formula; The parameterized LCA model is used according to the values corresponding to the independent parameters of the first product and the values corresponding to the dependent parameters of the first product to obtain (270) an LCA result for the first product.
4. The method according to claim 3, characterized in that Before obtaining an LCA result for the first product using the parameterized LCA model based on the values corresponding to the independent parameters of the first product and the values corresponding to the dependent parameters of the first product, the method further includes: A system boundary of the first product is obtained, where the system boundary includes at least one life cycle stage, to obtain an LCA result of the first product within the system boundary.
5. The method according to claim 4, characterized in that The life cycle stages include a production stage, a use stage, and a scrapping stage.
6. The method according to any one of claims 1 to 5, characterized in that Before obtaining the LCA model of a representative product among similar products, the method further includes: The product with the most common functions among the similar products is obtained to obtain the representative product.
7. The method according to any one of claims 1 to 6, characterized in that The LCA model of a representative product of the same type is obtained by: Establishing an LCA model of the representative product based on the relationship between each life cycle stage of the representative product, the relationship between each unit process in each life cycle stage, and the input flow data and output flow data of each unit process; The LCA model of the representative product includes the relationship between the input flow data and output flow data of each unit process and the LCA result of the representative product; The input flow data and output flow data of each unit process include data obtained by calculating the original data of the representative product through the formula.
8. The method according to claim 7, characterized in that Before obtaining the LCA model of a representative product among similar products, the method further includes: Obtaining original data for each life cycle stage of the representative product from the bill of materials, process bill, and supplier management system of the enterprise that produces the representative product; The input flow data and output flow data of each unit process are obtained according to the original data of each life cycle stage of the representative product, the LCA standard related to the representative product type and the life cycle inventory database.
9. A device for life cycle assessment (LCA), characterized in that: The device comprises: An acquisition unit (410) is used to acquire an LCA model of a representative product among similar products, wherein the similar products are products that achieve the same function; A processing unit (420) is configured to determine a parameter set in the LCA model of the representative product and a relationship between the parameter set and the LCA result; set parameters in the parameter set that are obtained from the original data of the representative product as independent parameters, and set parameters in the parameter set that cannot be obtained from the original data of the representative product as dependent parameters, so as to obtain a parameterized LCA model of the similar product, wherein the parameterized LCA model includes a formula for calculating the dependent parameters from the independent parameters, and a relationship between the parameter set and the LCA result.
10. A device for life cycle assessment (LCA), characterized in that: include: A memory (501) for storing programs; A processor (502) is configured to execute a program stored in the memory (501); when the program stored in the memory (501) is executed, the processor (502) is configured to execute the LCA method according to any one of claims 1 to 8.
11. A computer-readable storage medium, characterized in that The computer-readable medium stores a program code for execution by a device, wherein the program code includes instructions for executing the steps in the life cycle assessment (LCA) method according to any one of claims 1 to 8.