EP4684351A1

EP4684351A1 - Calculation method and device for carbon emission amount of shopfloor

Info

Publication number: EP4684351A1
Application number: EP23934631.5A
Authority: EP
Inventors: Bin Zhang; Armin Roux; Jiahai WANG; Jieyang PENG
Original assignee: Siemens AG; Siemens Corp
Current assignee: Siemens AG; Siemens Corp
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2026-01-28
Also published as: WO2024221439A1; CN120752663A

Abstract

A calculation method for carbon emission amount of a shopfloor, comprises: obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part; calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part; calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing; and summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor.

Description

CALCULATION METHOD AND DEVICE FOR CARBON EMISSION AMOUNT OF SHOPFLOOR

Technical Field

The present disclosure mainly relates to the field of industrial digitization, and in particular to a calculation method and device for carbon emission amount of a shopfloor.

Background

Manufacturing is the leading industry in energy consumption. According to the International Energy Outlook released by the International Energy Agency, 33%of energy and 38%of carbon emissions are generated by manufacturing. In order to reduce the carbon emissions of environmental pollutants, the development of a low-carbon model in manufacturing has attracted wide attention.
At present, there are mainly three methods for calculating carbon emission amount of a shopfloor. The first method is based on an empirical model, which directly relates the power consumption of the shopfloor manufacturing process to carbon emissions; the empirical model converts the power consumption of the shopfloor manufacturing process into the carbon emissions of the process; and this method is only applicable to the assessment of carbon emissions in industries, companies or regions with high energy consumption. The second method is based on the processing capacity; the power of the machine tool is different in different processing states; the carbon emissions of a machine tool are calculated according to the energy consumption of the machine tool in different processing states by accumulating the energy consumption of the machine tool in different processing states during processing; and this method is only applicable to a specific processing method or a specific machine tool. The third method is based on machine components; machine tool components include a servo motor, a bearing motor, a tool magazine and an emulsion pump; the energy consumption of the machine tool can be obtained by summing the energy consumption of all energy consumption components; the carbon emissions of the machine tool can be calculated through the energy consumption of the machine tool; and this method is only applicable to the carbon emissions of a cutting machine tool.
Summary
In order to solve the technical problem mentioned above, the present disclosure provides a calculation method and device for carbon emission amount of a shopfloor so as to improve the calculation accuracy of the carbon emission amount of the shopfloor and extend the application range.
To achieve the foregoing objective, the present disclosure provides a calculation method for carbon emission amount of a shopfloor, wherein the calculation method comprises: obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part; calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part; calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing; and summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor. Therefore, the carbon emission amount of the shopfloor can be obtained by summing carbon emission amount of parts processing, carbon emission amount of public facilities, carbon emission amount of a working medium, carbon emission amount of operators and carbon emission amount of parts storage. Each link of the carbon emissions of the shopfloor is considered, the calculation accuracy of the carbon emission amount of the shopfloor is improved, the type of machine tools is not limited, and the application range of the carbon emissions of the shopfloor is extended.
Optionally, wherein calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing comprise: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing. Therefore, a calculation method for carbon emission amount of parts processing is provided.
Optionally, wherein calculating the carbon emission amount of machining of each part in each processing step comprises: obtaining the energy consumption of a machine tool, calculating direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating carbon emission amount of a cutting fluid, carbon emission amount of lubricating oil, carbon emission amount of a cutter and carbon emission amount of waste treatment, calculating indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step. Therefore, a calculation method for carbon emission amount of machining is provided.
Optionally, wherein calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool comprises: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool. Therefore, a calculation method for direct carbon emission amount of a machine tool is provided.
Optionally, wherein the calculation method further comprises: providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface. Therefore, a user can visually browse and know about the carbon emission amount of each machine tool so as to make a carbon reduction decision.
The present disclosure further provides a calculation apparatus for carbon emission amount of a shopfloor, wherein the calculation apparatus comprises: acquisition module, obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part; first calculation module, calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part; second calculation module, calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing; and third calculation module, summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor.
Optionally, wherein the second calculation module calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing comprise: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing.
Optionally, wherein the second calculation module calculating the carbon emission amount of machining of each part in each processing step comprises: obtaining the energy consumption of a machine tool, calculating direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating carbon emission amount of a cutting fluid, carbon emission amount of lubricating oil, carbon emission amount of a cutter and carbon emission amount of waste treatment, calculating indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step.
Optionally, wherein the second calculation module calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool comprises: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool.
Optionally, wherein the calculation apparatus further comprises a display module: the display module providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface.
The present disclosure further provides an electronic device, including a processor, a memory, and instructions stored in the memory, where the above method is implemented when the instructions are executed by the processor.
The present disclosure further provides a computer-readable storage medium, storing computer instructions, where the above method is implemented when the computer instructions are executed by the processor.
The present disclosure further provides a computer program product, including a computer program, where the above method is implemented while the computer program is executed by a processor.

Brief Description of Drawings

The following drawings are only intended for schematic illustration and explanation of the present disclosure, and are not intended to limit the scope of the present disclosure. In the drawings,
FIG. 1 is a flow chart of a calculation method for carbon emission amount of a shopfloor according to one embodiment of the present disclosure.
FIG. 2 is a schematic diagram of carbon emissions in a part machining process according to one embodiment of the present disclosure.
FIG. 3 is a schematic diagram of a hierarchical structure of the carbon emission amount of the shopfloor according to one embodiment of the present disclosure.
FIG. 4 is a schematic diagram of a graphical user interface for the carbon emission amount of the shopfloor according to one embodiment of the present disclosure.
FIG. 5 is a schematic diagram of a calculation device for the carbon emission amount of the shopfloor according to one embodiment of the present disclosure.
FIG. 6 is a schematic diagram of an electronic device according to one embodiment of the present disclosure.
Reference numerals
100 Calculation method
110-140 Step
20 Roughcast
P1 Process I
21-1 Process I-buffering
22-1 Process I-machining
23-1 Process I-transportation
Pm Process m
21-m Process m-buffering
22-m Process m-machining
23-m Process m-transportation
24 component
400 Graphical user interface
401-405 Region
500 Calculation device
510 Acquisition module
520 First calculation module
530 Second calculation module
540 Third calculation module
600 Electronic device
610 Processor
620 Memory

Detailed Description

To provide a clearer understanding of the technical features, objectives, and effects of the present disclosure, specific implementations of the present disclosure are described with reference to the accompanying drawings.
Many specific details are set forth in the following description to facilitate a full understanding of this application, but this application may alternatively be implemented in other manners different from those described herein and is therefore not limited by specific embodiments disclosed below.
As shown in the present application and the claims, words such as “a/an, ” “one, ” “one kind, ” and/or “the” do not refer specifically to singular forms and may also include plural forms, unless the context expressly indicates an exception. In general, terms “comprise” and “include” merely indicate including clearly identified steps and elements. The steps and elements do not constitute an exclusive list. A method or a device may also include other steps or elements.
The present disclosure provides a calculation method for carbon emission amount of a shopfloor. FIG. 1 is a flow chart of the calculation method 100 for the carbon emission amount of the shopfloor according to one embodiment of the present disclosure. As shown in FIG. 1, the calculation method 100 includes:
Step 110, the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part are obtained.
The public facilities are the facilities unrelated to production in the shopfloor, including lighting and heating facilities, and the energy consumption of the public facilities can be obtained by means of an energy management system of the shopfloor. The working medium is the medium related to production, including industrial water, compressed gas and the like, the flow rate of each working medium can be obtained by means of a flow meter installed on site, and the use time of each working medium can be obtained from a supplier. The number of the operators and the working time of each operator can be obtained by means of a personnel management system. The number of the stored parts and the processing time of each part can be obtained by means of a storage management system.
Step 120, carbon emission amount of the public facilities is calculated according to the energy consumption of the public facilities, carbon emission amount of the working medium is calculated according to the flow rate and use time of each working medium, carbon emission amount of the operators is calculated according to the number of the operators and the working time of each operator, and carbon emission amount of parts storage is calculated according to the number of stored parts and the processing time of each part.
The carbon emission amount of the public facilities can be calculated according to the energy consumption of the public facilities by formula (1) .
C^pu=E^pu×F^e (1)
Where C^pu represents the carbon emission amount of the public facilities, E^pu represents the energy consumption of the public facilities, F^e represents a carbon emission factor with the unit of kgCO₂ / (KW*h) , the carbon emission factor varies in different regions, and the carbon emission factors in different regions can be obtained by looking up a table.
The carbon emission amount of the working medium can be calculated according to the flow rate and use time of each working medium by formula (2) .
C^wn=∑Q_k×T_k×F^wm (2)
Where C^wn represents the carbon emission amount of the working medium, Q_k represents the flow rate of the k^th working medium, T_k represents the use time of the k^th working medium, and F^wn represents a carbon emission factor of the working medium.
The carbon emission amount of parts storage can be calculated according to the number of the stored parts and the processing time of each part by formula (3) .
C^st=n×ES×T^span×F^e (3)
Where C^st represents the carbon emission amount of parts storage, n represents the number of the stored parts, ES represents the energy consumption of a single stored part per unit time, T^span represents the processing time of the shopfloor part, and F^e represents a carbon emission factor.
The carbon emission amount of the operators C^pe can be calculated by multiplying the number of the operators by the working time of each operator and the carbon emission factor of the operator.
Step 130, carbon emission amount of each part in each processing step is calculated, and carbon emission amount of all the parts in all the processing steps is summed to obtain carbon emission amount of parts processing.
One product includes multiple parts. One part is processed in multiple processing steps. The carbon emission amount of parts processing can be obtained by calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps. The carbon emission amount of parts processing represents the carbon emission amount generated during processing of the parts, and the carbon emission amount of parts processing can be expressed by formula (4) .
Where C^p represents the carbon emissions of parts processing, andrepresents the carbon emissions of parts processing of the i^th part.
Step 140, the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage are summed to obtain the carbon emission amount of the shopfloor.
The carbon emission amount of the shopfloor can be obtained by summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage. Each link of the carbon emissions of the shopfloor is considered, the calculation accuracy of the carbon emission amount of the shopfloor is improved, the type of machine tools is not limited, and the application range of the carbon emissions of the shopfloor is extended.
The carbon emission amount of the shopfloor obtained by summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage can be expressed by formula (5) .
C^shop=C^pu+C^wm+C^pe+C^st+C^p (5)
Where C^shop represents the carbon emission amount of the shopfloor, C^pu represents the carbon emission amount of the public facilities, C^wn represents the carbon emission amount of the working medium, C^pe represents the carbon emission amount of the operators, C^strepresents the carbon emission amount of parts storage, and C^p represents the carbon emission amount of parts processing.
In some embodiments, calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing include: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing. Specifically, the part is temporarily stored in a buffering region after the previous processing step is completed and before the next processing step is started, and the carbon emission amount of the part generated during temporary storage in the buffering region is the carbon emission amount of buffering. The carbon emissions of the part generated during transportation from the previous processing step to the next processing step are the carbon emission amount of transportation. The machine tool has a certain amount of depreciation during processing, and the corresponding carbon emissions of depreciation are the carbon emissions of machine tool depreciation. The carbon emissions of the part generated during processing in the processing steps are the carbon emission amount of parts processing.
Calculating the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of each part in each processing step and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps can be expressed by formula (6) .
Whererepresents the carbon emissions of parts processing of the i^th part, represents the carbon emission amount of buffering, represents the carbon emission amount of machining, represents the carbon emission amount of machine tool depreciation, andrepresents the carbon emission amount of transportation.
The carbon emission amount of bufferingthe carbon emission amount of machine tool depreciationand the carbon emission amount of transportationcan be respectively calculated by formulas (7) - (9) .
Where EC represents the energy consumption of buffering of a single part per unit time, represents the buffering time of the part i before the processing step j, and F^e represents a carbon emission factor.
Whererepresents the processing time of the part i in the processing step j, represents the working time of machine tools in the processing step j of the part i, M_ijrepresents the number of the machine tools in the processing step j of the part i, and F^mdrepresents a depreciation carbon emission factor with the unit of KgCO₂/t.
Where M_ij represents the number of the part i after the processing step j-1, represents the transportation distance of the part i from the processing step j-1 to the processing step j, and F^tr represents a transportation carbon emission factor.
FIG. 2 is a schematic diagram of carbon emissions in a part machining process according to one embodiment of the present disclosure. As shown in FIG. 2, a roughcast 20 is machined into a component 24 by using a process P1 to a process Pm. The process PI includes buffering 21-1, machining 22-1 and transportation 23-1. Carbon emissions of buffering 21-1-ce are generated during buffering 21-1. Carbon emissions of machining 22-1-ce1 and carbon emissions of machine tool depreciation 22-1-ce2 are generated during machining 22-1. Carbon emissions of transportation 23-1-ce are generated during transportation 23-1. The carbon emission amount of parts processing can be calculated by summing the carbon emissions of buffering, the carbon emissions of machining, the carbon emissions of machine tool depreciation and the carbon emissions of transportation in all the processes.
In some embodiments, calculating the carbon emission amount of machining of each part in each processing step includes: obtaining the energy consumption of a machine tool, calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating the carbon emission amount of a cutting fluid, the carbon emission amount of lubricating oil, the carbon emission amount of a cutter and the carbon emission amount of waste treatment, calculating the indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step.
Summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool can be expressed by formula (10) .
C^m=C^d+Cⁱ (10)
Where C^m represents the carbon emission amount of machining, C^d represents the direct carbon emission amount, and Cⁱ represents the indirect carbon emission amount.
Obtaining the energy consumption of the machine tool and calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool can be expressed by formula (11) .
C^d=F^e×E_d (11)
Where C^d represents the direct carbon emission amount, F^e represents a carbon emission factor, and E_d represents the energy consumption of the machine tool.
Calculating the indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment can be expressed by formula (12) .
C_i=C^f+C^s+C^t+C^w (12)
Where Cⁱ represents the indirect carbon emission amount, C^f represents the carbon emission amount of the cutting fluid, C^s represents the carbon emission amount of the lubricating oil, C^t represents the carbon emission amount of the cutter, and C^w represents the carbon emission amount of waste treatment.
The carbon emission amount of the cutting fluid can be calculated by formula (13) .
Where C^f represents the carbon emission amount of the cutting fluid, t_c represents the cutting time, T_f represents the cutting fluid replacement period, F^f represents a carbon emission factor of the cutting fluid, V_f represents the usage of the cutting fluid, F^wa represents a carbon emission factor of wastewater treatment, and ρ represents the use density of the cutting fluid.
The carbon emission amount of the lubricating oil can be calculated by formula (14) .
Where C^s represents the carbon emission amount of the lubricating oil, t_c represents the cutting time, t_e represents the tool change time, t_u represents the no-load time, t_s represents the waiting time, T_sm represents the lubricating oil replacement period, F^s represents a carbon emission factor of the lubricating oil, and V_s represents the usage of the lubricating oil.
The carbon emission amount of the cutter can be calculated by formula (15) .
Where C^t represents the carbon emission amount of the cutter, t_c represents the cutting time, T_t represents the service life of the cutter after single sharpening, N represents the sharpening times of the cutter, F^t represents a carbon emission factor of cutter loss, and M_trepresents the mass of the cutter.
The carbon emission amount of waste treatment can be calculated by formula (16) .
C^w=M_w×(δ×F^w1+(1-δ)×F^w2) (16)
Where C^w represents the carbon emission amount of waste treatment, M_w represents the mass of waste, δ represents the recovery rate, F^w1 represents a recovery carbon emission factor, and F^w2 represents a treatment carbon emission factor.
In some embodiments, calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool includes: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool.
In the waiting, no-load, load and tool change statuses of the machine tool during operation, the waiting status refers to the status in which the machine tool is powered on till the spindle rotates. The no-load status refers to the status in which the cutter is kept away from the part without cutting (i.e., without load) when the spindle rotates. The load status refers to the status in which the cutter starts to make contact with the part (i.e., with load) for cutting. The tool change status refers to the status in which the spindle stops rotating for tool change when the cutter is kept away from the part for tool change after one-time cutting, and at the moment, the machine tool is still powered on. Calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool can be expressed by formula (17) .
E_d=P^s×t_s+P^e×t_eP^u×t_u+(P^u+P^a+P^c)×t_c (17)
Where E_d represents the energy consumption of the machine tool, P^s represents the waiting power, t_s represents the waiting time, P^e represents the tool change power, t_e represents the tool change time, P^u represents the no-load power, t_u represents the no-load time, P^a represents the additional load loss power, P^c represents the cutting power, and t_c represents the cutting time.
During waiting and tool change of the machine tool, the spindle of the machine tool stops rotating. At the moment, the power of the machine tool is the minimum no-load power P^uo, and the waiting power P^s and the tool change power P^e can be expressed by formula (18) .
P^s=P^e=P^uo (18)
Where P^s represents the waiting power, P^e represents the tool change power, and P^uorepresents the minimum no-load power.
When the machine tool is stably operated, the no-load power P^u has a quadratic function relationship with the spindle speed of the machine tool, which can be expressed by formula (19) .
P^u=P^uo+K₁w+K₂w² (19)
Where P^u represents the no-load power, P^uo represents the minimum no-load power, K₁, K₂ represents coefficients related to the spindle speed of the machine tool, and w represents the spindle speed of the machine tool.
When the machine tool has a transition from the no-load status to the load status, the additional load loss power P^a and the cutting power P^c may be generated, and the additional load loss power has an approximate linear relationship with the cutting power, which can be expressed by formula (20) .
P^a=b_m×P^c (20)
Where P^a represents the additional load loss power, b_m represents an additional load loss coefficient, and P^c represents the cutting power.
The cutting power P^c can be calculated by means of cutting related process parameters, which can be expressed by formula (21) .
Where P^c represents the cutting power, C_Fc represents the influence coefficient of part materials and cutting conditions, a_p represents the back cutting depth, f represents the feeding amount, K_Fc represents a correction coefficient, V_c represents the cutting speed, and x_Fc, y_Fc, n_Fc represents the influence index of cutting parameters.
Thus, the energy consumption E_d of the machine tool can be calculated by formulas (18) - (22) , and the direct carbon emissions C^d of the machine tool can be calculated by formula (11) .
In some embodiments, the calculation method further includes: providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface. FIG. 4 is a schematic diagram of the graphical user interface 400 for the carbon emission amount of the shopfloor according to one embodiment of the present disclosure. As shown in FIG. 4, a region 401 shows the machine tools in a certain shopfloor and further shows the carbon emission amount of each machine tool, and a user can visually browse and know about the carbon emission amount of each machine tool so as to make a carbon reduction decision. A region 402 shows the status of each machine tool. A region 403 shows the energy consumption of different shopfloors. A region 404 shows the carbon emission amount of different machine tools at different time. A region 405 shows alarm information of the machine tools.
FIG. 3 is a schematic diagram of the hierarchical structure of the carbon emission amount of the shopfloor according to one embodiment of the present disclosure. It can be understood that the schematic diagram of the hierarchical structure is not intended to limit the calculation method for the carbon emission amount of the shopfloor and is only an example for calculation. As shown in FIG. 3, from bottom to top, the carbon emission amount of machiningof the part i in the processing step j can be calculated according to the carbon emission amount of the cutting fluid C^f, the carbon emission amount of the lubricating oil C^s, the carbon emission amount of the cutter C^t and the carbon emission amount of waste treatment C^w. The carbon emission amount of parts processing C^p of the i^th part can be calculated with n parts in m processes according to the carbon emission amount of bufferingthe carbon emission amount of machiningthe carbon emission amount of machine tool depreciationand the carbon emission amount of transportationThe carbon emission amount of the shopfloor can be obtained by summing the carbon emission amount of parts processing C^p, the carbon emission amount of the public facilities C^pu, the carbon emission amount of the working medium C^wm, the carbon emission amount of the operators C^pe and the carbon emission amount of parts storage C^st.
The embodiment of the present disclosure provides a calculation method for carbon emissions of a shopfloor. The carbon emission amount of the shopfloor can be obtained by summing carbon emission amount of parts processing, carbon emission amount of public facilities, carbon emission amount of a working medium, carbon emission amount of operators and carbon emission amount of parts storage. Each link of the carbon emissions of the shopfloor is considered, the calculation accuracy of the carbon emission amount of the shopfloor is improved, the type of machine tools is not limited, and the application range of the carbon emissions of the shopfloor is extended.
The present disclosure further discloses a calculation apparatus 500 for carbon emission amount of a shopfloor, wherein the calculation apparatus 500 comprises:
acquisition module 510, obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part;
first calculation module 520, calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part;
second calculation module 530, calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing; and
third calculation module 540, summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor.
In some embodiments, wherein the second calculation module 530 calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing comprise: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing.
In some embodiments, wherein the second calculation module 530 calculating the carbon emission amount of machining of each part in each processing step comprises: obtaining the energy consumption of a machine tool, calculating direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating carbon emission amount of a cutting fluid, carbon emission amount of lubricating oil, carbon emission amount of a cutter and carbon emission amount of waste treatment, calculating indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step.
In some embodiments, wherein the second calculation module 530 calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool comprises: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool.
In some embodiments, wherein the calculation apparatus 500 further comprises a display module: the display module providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface.
The present disclosure further provides an electronic device 600. FIG. 6 is a schematic diagram of an electronic device 600 according to an embodiment of the present disclosure. As shown in FIG. 6, the electronic device 600 includes a processor 610 and a memory 620. The memory 620 stores an instruction, and the above method 100 is implemented when the instructions are executed by the processor 610.
The present disclosure also provides a computer-readable storage medium, storing computer instructions, where the above method 100 is implemented when the computer instructions are executed by the processor.
The present disclosure further provides a computer program product, including a computer program, where the above method 100 is implemented when the computer program is executed by a processor.
Some aspects of the method and apparatus of the present disclosure may be entirely executed by hardware, may be entirely executed by software (including firmware, resident software, microcode, and the like) , or may be executed by a combination of hardware and software. The foregoing hardware or software may be referred to as “data block” , “module” , “engine” , “unit” , “component” or “system” . A processor may be one or more application specific integrated circuits (ASIC) , digital signal processors (DSP) , digital signal processing devices (DSPD) , programmable logic devices (PLC) , field programmable gate arrays (FPGA) , processors, controllers, microcontrollers, microprocessors, or a combination thereof. In addition, various aspects of the present disclosure may be embodied as computer products located in one or more computer-readable media, the product includes a computer-readable program code. For example, the computer-readable medium may include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk, a magnetic tape ... ) , an optical disk (for example, a compact disk (CD) , a digital versatile disk (DVD) , ... ) , a smart card, and a flash memory device (for example, a card, a stick, a key driver, ... ) .
The flowchart is configured to describe operations performed by the method according to the embodiment of the present application herein. It should be understood that the foregoing operations may not be performed accurately according to the sequence. On the contrary, the operations may be performed in a reverse sequence or simultaneously. At the same time, or other operations are added into these processes, or one or a plurality of operations are removed from these processes.
It is to be understood that, although this specification is described according to each embodiment, each embodiment may not include only one independent technical solution. The description manner of this specification is merely for clarity. This specification should be considered as a whole by a person skilled in the art, and the technical solution in each embodiment may also be properly combined, to form other implementations that can be understood by the person skilled in the art.
The foregoing are merely specific schematic implementations of the present disclosure, and are not intended to limit the scope of the present disclosure. Any equivalent change, modification, and combination made by the person skilled in the art without departing from the conception and principles of the present disclosure should all fall within the protection scope of the present disclosure.

Claims

A calculation method (100) for carbon emission amount of a shopfloor, wherein the calculation method (100) comprises:

obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part (110) ;

calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part (120) ;

calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing (130) ; and

summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor (140) .
The calculation method (100) according to claim 1, wherein calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing comprise: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing.
The calculation method (100) according to claim 2, wherein calculating the carbon emission amount of machining of each part in each processing step comprises: obtaining the energy consumption of a machine tool, calculating direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating carbon emission amount of a cutting fluid, carbon emission amount of lubricating oil, carbon emission amount of a cutter and carbon emission amount of waste treatment, calculating indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step.
The calculation method (100) according to claim 3, wherein calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool comprises: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool.
The calculation method (100) according to any one of claims 1-4, wherein the calculation method (100) further comprises: providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface.
A calculation apparatus (500) for carbon emission amount of a shopfloor, wherein the calculation apparatus (500) comprises:

an acquisition module (510) , obtaining the energy consumption of public facilities, the flow rate and use time of each working medium, the number of operators and the working time of each operator, and the number of stored parts and the processing time of each part;

a first calculation module (520) , calculating carbon emission amount of the public facilities according to the energy consumption of the public facilities, calculating carbon emission amount of the working medium according to the flow rate and use time of each working medium, calculating carbon emission amount of the operators according to the number of the operators and the working time of each operator, and calculating carbon emission amount of parts storage according to the number of stored parts and the processing time of each part;

a second calculation module (530) , calculating carbon emission amount of each part in each processing step, and summing the carbon emission amount of all the parts in all the processing steps to obtain carbon emission amount of parts processing; and

a third calculation module (540) , summing the carbon emission amount of parts processing, the carbon emission amount of the public facilities, the carbon emission amount of the working medium, the carbon emission amount of the operators and the carbon emission amount of parts storage to obtain the carbon emission amount of the shopfloor.
The calculation apparatus (500) according to claim 6, wherein the second calculation module (530) calculating the carbon emission amount of each part in each processing step and summing the carbon emission amount of all the parts in all the processing steps to obtain the carbon emission amount of parts processing comprise: calculating carbon emission amount of buffering, carbon emission amount of machining, carbon emission amount of transportation and carbon emission amount of machine tool depreciation of each part in each processing step, and summing the carbon emission amount of buffering, the carbon emission amount of machining, the carbon emission amount of transportation and the carbon emission amount of machine tool depreciation of all the parts in all the processing steps to obtain the carbon emission amount of parts processing.
The calculation apparatus (500) according to claim 7, wherein the second calculation module (530) calculating the carbon emission amount of machining of each part in each processing step comprises: obtaining the energy consumption of a machine tool, calculating direct carbon emission amount of the machine tool according to the energy consumption of the machine tool, calculating carbon emission amount of a cutting fluid, carbon emission amount of lubricating oil, carbon emission amount of a cutter and carbon emission amount of waste treatment, calculating indirect carbon emission amount of the machine tool according to the carbon emission amount of the cutting fluid, the carbon emission amount of the lubricating oil, the carbon emission amount of the cutter and the carbon emission amount of waste treatment, and summing the direct carbon emission amount of the machine tool and the indirect carbon emission amount of the machine tool to obtain the carbon emission amount of machining of the part in the processing step.
The calculation apparatus (500) according to claim 8, wherein the second calculation module (530) calculating the direct carbon emission amount of the machine tool according to the energy consumption of the machine tool comprises: obtaining the minimum no-load power, spindle speed, back cutting depth, feeding amount and cutting speed of the machine tool, calculating the no-load power of the machine tool according to the spindle speed of the machine tool, calculating the additional load power and cutting power of the machine tool according to the back cutting depth, feeding amount and cutting speed, and calculating the direct carbon emission amount of the machine tool according to the minimum no-load power of the machine tool, the no-load power of the machine tool and the additional load power and cutting power of the machine tool.
The calculation apparatus (500) according to any one of claims 6-9, wherein the calculation apparatus (500) further comprises a display module: the display module providing a graphical user interface, and displaying historical carbon emission data, real-time carbon emission data and predicted carbon emission data of each machine tool in the shopfloor on the graphical user interface.
An electronic device (600) , comprising a processor (610) , a memory (620) , and instructions stored in the memory (620) , wherein the method (100) is implemented according to any one of claims 1 to 5 when the instructions are executed by the processor (610) .
A computer-readable storage medium, storing computer instructions, wherein the method (100) is implemented according to any one of claims 1 to 5 when the computer instructions are executed by the processor.
A computer program product, comprising a computer program, wherein the method (100) is implemented according to any one of claims 1 to 5 when the computer program is executed by the processor.