Vehicle Magnetic Field Evaluation System Using Segmented Surface Analysis
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Solution Overview
Problem
Current magnetic field evaluation systems for vehicles are inefficient in identifying specific sources and intensities of magnetic field propagation, leading to unnecessary shielding measures, as they do not effectively differentiate between multiple sources of magnetic fields affecting evaluation points within a vehicle cabin.
Innovation Solution
A magnetic field evaluation system and program that measure and calculate the magnetic flux density vector or magnetic field vector on segmented vehicle surfaces, allowing for the identification of propagation sources and intensities to specific evaluation points, using a sensor sheet and data processing units to display propagation intensity distribution images, enabling targeted shielding measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shielding measures are applied to all sources of magnetic field propagation, then magnetic field reduction at evaluation points is improved, but cost and complexity of shielding implementation increases
Solution Approach 1:
The measurement target surface is divided into multiple segments, and magnetic field measurements are performed for each segment independently. This segmentation allows the system to identify specific segments that contribute to magnetic field propagation to evaluation points, enabling targeted shielding measures only for those segments rather than applying shielding to all sources.
Solution Approach 2:
The system calculates propagation intensity for each individual segment to the evaluation point, providing localized information about magnetic field contribution. This local quality assessment enables selective application of shielding measures to specific segments with high propagation intensity, rather than uniform shielding across all segments.
2Measurement precision
If magnetic field measurements are performed at multiple points on vehicle surfaces, then identification of propagation sources is improved, but measurement time and data processing complexity increases
Solution Approach 1:
The vehicle surface is divided into multiple segments with measurement points distributed across them. By segmenting the measurement target and associating measurements with specific segments, the system efficiently identifies propagation sources without requiring exhaustive measurements at every possible location.
Solution Approach 2:
The propagation intensity calculation unit acts as an intermediary that processes measurement data from multiple points and calculates the contribution of each segment to the evaluation point. This intermediary calculation step transforms raw measurement data into meaningful propagation intensity values, enabling efficient source identification.
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 system allows for precise identification of magnetic field sources and intensities, enabling focused shielding measures to reduce magnetic field propagation to evaluation points, thereby improving efficiency and effectiveness in mitigating magnetic field interference within vehicle cabins.
Implementation Method 1
a magnetic field measurement device configured to measure a magnetic flux density vector or a magnetic field vector generated from each of a plurality of segments
Data Source
AI summary
A magnetic field measurement device measures a magnetic flux density vector or a magnetic field vector generated from each of segments obtained by segmenting a measurement target surface of a vehicle. A magnetic field evaluation device includes a propagation intensity calculation unit and a display control unit. The propagation intensity calculation unit calculates propagation intensity that is the intensity of a magnetic field or the magnitude of magnetic flux density that propagates from each of the segments to an evaluation point that is separated from the measurement target surface with use of the magnetic flux density vector or the magnetic field vector in each of the segments and a separation distance between the segments and the evaluation point. A display control unit displays on a display unit a propagation intensity distribution image indicating the position of the evaluation point and distribution of the propagation intensity in each of the segments.