Magnetic Sensor with Angled Protruding Surfaces for Compact Detection
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Solution Overview
Problem
The challenge is to create a magnetic sensor with a reduced size while maintaining the ability to accurately detect specific components of a target magnetic field, as the complexity of structural bodies like soft magnetic bodies and inclined surfaces increases the difficulty in forming magnetoresistive elements with high accuracy.
Innovation Solution
The magnetic sensor design includes a configuration where magnetoresistive elements are disposed in areas with specific edge orientations and angles, allowing structural bodies to intersect in a way that reduces the size of the sensor while maintaining detection accuracy, with structural bodies extending across multiple areas and forming larger angles with certain edges than others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple structural bodies (soft magnetic bodies or inclined surfaces) are provided to enable magnetoresistive elements to detect specific components of the target magnetic field, then the detection capability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines multiple structural bodies into a single integrated structure. Instead of providing separate soft magnetic bodies or inclined surfaces for different detection directions, the invention integrates these functions into one unified structural body that performs multiple detection tasks simultaneously, thereby reducing device complexity while maintaining detection capability
Solution Approach 2:
The structural body is designed to serve multiple functions: it acts as both a soft magnetic body for magnetic field conversion and provides inclined surfaces for directional detection. This multi-functional design eliminates the need for separate components, reducing the number of structural bodies while preserving the ability to detect specific magnetic field components
2Adaptability or versatility
If multiple structural bodies are provided to enable magnetoresistive elements to detect specific components of the target magnetic field, then the detection capability is improved, but the manufacturing precision requirement increases
Solution Approach 1:
By merging multiple structural bodies into one integrated structure, the patent reduces the total number of components that need to be manufactured and positioned with high precision. This consolidation lowers the cumulative manufacturing precision requirements while maintaining the ability to detect specific magnetic field components
3Ease of manufacture
If the number of structural bodies is reduced to ease manufacturing, then the ease of manufacture is improved, but the detection capability may be compromised
Solution Approach 1:
The integrated structural body is designed with multi-functionality, incorporating both soft magnetic body characteristics and inclined surface geometries that enable detection of specific magnetic field components. This allows the single structure to maintain detection capability while simplifying the overall device architecture and easing manufacturing
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 design enables a compact magnetic sensor that effectively detects target magnetic field components with improved precision and reduced manufacturing complexity, achieving a smaller size without compromising detection capabilities.
Implementation Method 1
Magnetic sensors using magnetoresistive elements have been used for various applications in recent years
Implementation Method 2
the magnetic field containing the component in the direction perpendicular to the surface of the substrate can be detected by providing a soft magnetic body for converting a magnetic field in the direction perpendicular to the surface of the substrate into a magnetic field in the direction parallel to the surface of the substrate
Data Source
AI summary
A magnetic sensor includes a plurality of resistor sections each including a plurality of MR elements, and a plurality of protruding surfaces each structured to cause the plurality of MR elements to detect a specific component of a target magnetic field. The plurality of MR elements are disposed dividedly in first to fourth areas corresponding to the respective resistor sections. Each of the first to fourth areas includes a first and a second end edge located at both ends in a first reference direction, and a third and a fourth end edge located at both ends in a second reference direction. An angle that each of the plurality of protruding surfaces forms with respect to the first end edge or the second end edge is larger than an angle that each of the plurality of protruding surfaces forms with respect to the third end edge or the fourth end edge.