CAD-Integrated Environmental Load Calculation for Product Design

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Solution Overview

Problem

Existing environmental load evaluation systems fail to integrate with design tools, leading to redundant design work and inefficiencies in achieving target environmental load values.

Innovation Solution

An environmental load calculation apparatus that integrates with 3D-CAD tools, allowing real-time environmental load assessment during the design process, using Life Cycle Assessment (LCA) to adjust design elements until target values are met.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If environmental load evaluation is performed after product design is completed using separate evaluation systems, then environmental load can be assessed, but design time increases and redundant design work occurs

Engineering Contradiction:
Improveenvironmental load evaluation accuracyVSAvoiddesign time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent merges the environmental load evaluation function directly into the CAD design tool, creating an integrated system where both design and environmental assessment occur simultaneously within the same software environment, eliminating the need for separate evaluation processes

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system performs environmental load evaluation during the design process itself rather than after completion, allowing designers to assess and adjust environmental impact in real-time while creating the product design

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If environmental load evaluation is performed after design completion, then comprehensive evaluation can be conducted, but design iterations require repeating similar design work

Engineering Contradiction:
Improveenvironmental load assessment completenessVSAvoiddesign efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The integrated system provides immediate feedback on environmental load calculations during the design process, allowing designers to adjust design parameters in real-time based on environmental impact data without completing the entire design first

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Environmental load assessment is performed preliminarily during design development rather than after completion, enabling designers to identify and correct environmental issues early in the design process before finalizing the product

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If separate environmental load evaluation systems are used, then detailed environmental analysis can be performed, but integration with design tools is lacking

Engineering Contradiction:
Improveenvironmental load calculation accuracyVSAvoidsystem integration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines the environmental load calculation engine with the CAD design tool into a single integrated system, allowing both design and environmental assessment to occur within the same software environment with seamless data exchange

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4654104A1Environmental load calculation apparatus
Publication Date: 2025.11.26 HITACHI LTD
  • EP4654104A1 patent drawingFigure 1
  • EP4654104A1 patent drawingFigure 2
  • EP4654104A1 patent drawingFigure 3

AI summary

An environmental load calculation apparatus of the present disclosure includes: a design tool unit that designs at least one of a product and a component constituting the product; an environmental load calculation unit that calculates an environmental load of at least one of the product and the component; and an environmental load visualization unit that displays the environmental load, in which the environmental load calculation unit calculates the environmental load based on at least one of a configuration, a function, a manufacturing process, and a reliability of the component, and an assembly process and a reliability of the product, and when the environmental load has not reached a target value, the design tool unit executes the design again before the design is completed. Thus, it is possible to reduce the environmental load of the product and shorten the time required for designing the product.