Magnetic Field Sensor Test Equipment with Planar Tracks
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Solution Overview
Problem
Existing magnetic field test equipment for electronic sensors, particularly in the Z-direction, lacks precision and control due to cumbersome coil structures, leading to inaccurate sensor calibration.
Innovation Solution
A test equipment with parallel tracks on a base plane, where electric current circulates in specific directions to generate precise magnetic fields, utilizing symmetry to achieve desired field orientations and intensities, allowing for precise control of magnetic fields in all directions, including the challenging Z-direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional coils are used to generate magnetic fields, then the equipment can produce magnetic fields in three directions, but the control of direction and intensity becomes difficult and imprecise
Solution Approach 1:
The patent divides the base plane into multiple independent conductive tracks arranged in specific patterns (e.g., orthogonal pairs, triangular configurations) rather than using traditional spiral coils. Each track can be independently controlled to generate magnetic field components, allowing precise control of field direction and intensity through selective current injection.
Solution Approach 2:
The patent transitions from three-dimensional coil structures to a two-dimensional planar track configuration on the base plane. This dimensional simplification reduces structural complexity while maintaining the capability to generate magnetic fields in three spatial directions (X, Y, Z) through vector composition of currents in the planar tracks.
2Power
If coils are used to generate magnetic fields, then magnetic fields can be produced, but the structure becomes cumbersome and placement becomes difficult
Solution Approach 1:
The patent extracts the essential function of magnetic field generation from the complex coil structure and implements it through simplified conductive tracks integrated directly into the base plane. This separation of function from complex structure allows the magnetic field generation capability to be maintained while eliminating the cumbersome coil assemblies.
Solution Approach 2:
The patent merges the magnetic field generation function with the base plane structure itself by integrating conductive tracks directly into the base plane substrate. This consolidation eliminates the need for separate coil assemblies and their supporting structures, simplifying the overall device architecture while maintaining magnetic field generation capability.
3Measurement precision
If coils are used for magnetic field generation, then fields can be produced, but precision and controllability in the Z-direction are particularly poor
Solution Approach 1:
The patent employs different track configurations and current injection strategies for different spatial directions. Specifically, certain track pairs or triangular track configurations are optimized for generating Z-direction magnetic field components, while other tracks handle X and Y directions. This localized optimization of track geometry and current control enables precise Z-direction field generation independent of the other directions.
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 provides a simpler, more precise method for generating and controlling magnetic fields, significantly improving the accuracy of sensor calibration and reducing structural complexity compared to traditional coil-based systems.
Implementation Method 1
Means (10, 15) for the generation of a magnetic field through the circulation of the electric current injected
Data Source
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Figure 6~7
AI summary
The present invention concerns equipment (100) for the check of one or more sensors (200) through the generation of a magnetic field (B) and comprising: - A base plane (30) comprising one or more fixing positions (9) on which said one or more sensors (200) to test can be arranged; - Means (40) to inject electric current in the base plane (3); - Means (10, 15) for the generation of a magnetic field through the circulation of the electric current injected; - Characterized in that said means (10, 15) for the generation of the magnetic field comprise: - Two or more first tracks (10, 15), parallel among them, on which the electric current injected can circulate and that develop on the base plane (30) along a first direction (X, Y); - Two or more second tracks (10, 15), parallel among them, on which the electric current injected can circulate and that develop on the base plane (30) along a second direction (X, Y), orthogonal to the first direction (X, Y); - The fixing positions (9) being placed each one in such a point that a reference plane (500), orthogonal to the base plane (3), passing through said fixing position and parallel to the first tracks or to the second tracks, results a symmetric or substantially symmetric plane for the base plane (30).