CAD Electromagnetic Field Calculation Module
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Solution Overview
Problem
Conventional CAD tools lack the capability to calculate electromagnetic field levels, making it difficult to evaluate electromagnetic interference and noise issues in vehicle design, particularly when designing equipment with sensitive components like antennas near electrical components such as wiring harnesses.
Innovation Solution
An electromagnetic simulation module is integrated into the CAD system to calculate electromagnetic fields at specific locations within a 3D design environment, using electrical current data from databases and spatial positioning data from CAD data, allowing for the determination of magnetic and electric fields and enabling the evaluation of shielding needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional CAD tools are used for mechanical arrangement evaluation, then mechanical design efficiency is improved, but electromagnetic field calculation capability is lost
Solution Approach 1:
The patent combines mechanical CAD functionality with electromagnetic field calculation capabilities into a single integrated system. The electromagnetic simulation module is embedded within the CAD environment, allowing simultaneous access to both mechanical design tools and electromagnetic analysis functions without requiring separate software systems or data transfer processes.
Solution Approach 2:
The CAD system is enhanced to perform multiple functions: mechanical arrangement evaluation, electromagnetic field calculation, and interference assessment. The system universally handles both mechanical geometry data and electromagnetic simulation requirements, eliminating the need for specialized separate tools for each analysis type.
2Measurement precision
If electrical circuit design tools are used for current flow evaluation, then electrical parameter analysis is improved, but physical arrangement consideration is lost
Solution Approach 1:
The system merges electrical circuit analysis capabilities with 3D physical layout visualization. The electromagnetic simulation module accesses both the electrical current data and the corresponding physical component positions from the integrated database, enabling simultaneous analysis of electrical parameters and their spatial relationships.
Solution Approach 2:
An integrated database serves as an intermediary between electrical circuit data and mechanical CAD geometry. This database stores and links electrical component positions, current flow characteristics, and mechanical spatial arrangements, allowing the simulation module to retrieve and correlate both electrical and physical information seamlessly.
3Measurement precision
If electromagnetic simulation module is integrated into CAD system, then electromagnetic field calculation capability is improved, but system complexity is increased
Solution Approach 1:
The electromagnetic simulation module is implemented as a distinct, self-contained software component within the CAD system. This segmentation allows the electromagnetic calculation functionality to be developed, tested, and maintained independently while interfacing with the existing CAD framework through standardized data structures and communication protocols.
Solution Approach 2:
The electromagnetic simulation module automatically retrieves necessary data (component positions, current values, geometric information) from the integrated database without requiring manual input or complex configuration. The module self-manages the calculation process, using pre-stored electrical and mechanical data to perform field calculations and generate results.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables rapid and accurate assessment of electromagnetic fields, allowing designers to identify and mitigate noise issues early in the design process, preventing delays and costs associated with prototyping and improving the overall design efficiency by providing real-time feedback on field levels and shielding requirements.
Implementation Method 1
The combination of an electrical parameter, such as a direct current, and spatial location relative to the predetermined location, allows the magnetic field at the predetermined location to be calculated using a mathematics model based on electromagnetic theory
Implementation Method 2
The electromagnetic simulation module then determines the electromagnetic field, such as the magnetic field due to DC or AC currents, at the point of interest
Data Source
AI summary
Examples of the invention include methods and apparatus for determining an electromagnetic field, such as a magnetic field, at a selected location within computer-aided design (CAD) data. An example approach may include selecting a location by clicking on, or otherwise selecting the location within a visual representation of the CAD data, selecting one or more electrical components within the CAD data, retrieving electrical current data and distance data for each of the selected electrical components, and determining the electromagnetic field at the selected location using electromagnetic theory. Examples of the invention allow rapid determination of potential electromagnetic noise problems in the CAD design stage, before prototyping and without the complexity of a full 3D electromagnetic simulation.