Production Line CO2 Allocation Using Product Work Time Ratios
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Solution Overview
Problem
Existing methods fail to accurately calculate CO2 emission amounts per unit product in mixed flow production lines where different products require varying production times and energy consumption, leading to inaccurate carbon footprint assessments.
Innovation Solution
A management method and device that acquire and allocate power consumption based on the ratio of total work times for each product in a production line, allowing for precise calculation of CO2 emission amounts per unit product by dividing the total power consumption proportionally according to the work times required for each product type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If power consumption amount is allocated based on production quantity in a mixed flow line, then calculation is simple, but CO2 emission amount per unit product becomes inaccurate
Solution Approach 1:
The patent segments the total power consumption amount into product-specific portions by dividing it according to the ratio of total work times for each product type. This segmentation allows accurate allocation of energy consumption to each product type (first product and second product) based on their actual production time requirements, thereby resolving the inaccuracy caused by simple production quantity-based allocation.
2Measurement precision
If different energy amounts are used for different product types in mixed flow production, then CO2 emission accuracy improves, but calculation complexity increases
Solution Approach 1:
The patent introduces 'total work time' as an intermediary parameter to bridge the relationship between power consumption and product-specific CO2 emissions. By using the ratio of total work times as a mediator, the system can accurately allocate energy consumption without requiring complex real-time monitoring of each individual product's energy usage, thus maintaining calculation feasibility while improving accuracy.
3Measurement precision
If work time ratio is used to allocate power consumption, then CO2 emission per unit product becomes accurate, but data collection requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the work time required for each product type before actual production occurs. This allows the system to use these predetermined work time values to allocate power consumption accurately during production, eliminating the need for complex real-time work time measurement while maintaining calculation accuracy.
Data Source
AI summary
A management method for management of a CO2 emission amount emitted by production of a product in a production line where a first product and a second product are produced includes acquiring a power consumption amount consumed in the production line for a predetermined period, and calculating a CO2 emission amount for each product by allocating the power consumption amount based on a ratio of a total work time required to produce the first product in the production line during the predetermined period and a total work time required to produce the second product in the production line during the predetermined period.