Automated Thermal Network Model Generation from CAD Data

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Solution Overview

Problem

The existing thermal network method for creating analysis models requires manual input of device dimensions to calculate thermal resistance values, making the process time-consuming.

Innovation Solution

An information processing apparatus with a receiving unit for shape data, a selection unit for modeling methods, a generation unit for generating thermal network models, an addition unit for nodes and elements, a setting unit for boundary conditions, and a display unit for physical quantities, which automates the creation of thermal network models using selected modeling methods like plate and solid block modeling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual input of device dimensions is used to calculate thermal resistance values, then calculation accuracy is maintained, but model creation time increases significantly

Engineering Contradiction:
Improvethermal resistance calculation accuracyVSAvoidmodel creation time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system automatically extracts dimensional information from CAD data and performs thermal resistance calculations without requiring manual analyst input. The automated model generation unit reads CAD files, extracts geometric parameters, and computes thermal resistance values programmatically, enabling the system to serve itself rather than relying on manual operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical process of dimension input and calculation with an automated computational system. The automated model generation unit uses software-based algorithms to extract dimensions from CAD models and calculate thermal resistance values, substituting human operators with computational mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If detailed manual modeling is performed, then model accuracy is improved, but productivity decreases

Engineering Contradiction:
Improvethermal network model accuracyVSAvoidmodel creation speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs preliminary extraction of dimensional information from CAD data before the actual thermal resistance calculation. By pre-processing the CAD files to extract relevant geometric parameters, the system prepares all necessary input data in advance, enabling rapid and accurate model generation without manual intervention during the calculation phase.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The automated model generation unit creates thermal network models by copying and processing information from existing CAD data. Instead of manual modeling, the system replicates the geometric information from CAD files and transforms it into thermal resistance calculations, maintaining accuracy while eliminating manual operations.

Inventive Principle:
Principle #26Copying

3Productivity

If automated model generation is implemented, then productivity increases, but manual control and verification become more difficult

Engineering Contradiction:
Improvemodel creation speedVSAvoidmanual control capability
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The system incorporates verification mechanisms that provide feedback on the automated model generation process. The verification unit checks the thermal resistance calculations against expected ranges and validates the extracted dimensional information from CAD data, ensuring that automated operations produce accurate results while maintaining the ability to detect and correct errors.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11526637B2Information processing apparatus, information processing method, and storage medium for creating a thermal network model in a short time
Publication Date: 2022.12.13 CANON KK
  • US11526637B2 patent drawing
  • US11526637B2 patent drawing
  • US11526637B2 patent drawing

AI summary

An information processing apparatus includes a receiving unit configured to receive input of shape data of a device that is a subject of a thermal analysis, a selection unit configured to select a modeling method for a component included in the device, a generation unit configured to generate a thermal network model of the component from the shape data based on the selected modeling method, an addition unit configured to add a node and an element to the thermal network model, a setting unit configured to set a boundary condition to the thermal network model, a determination unit configured to determine a physical quantity of the thermal network model, and a display unit configured to display the determined physical quantity.