Magnetic Sensor with Overlapping Elements for High Sensitivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current magnetic sensors have limitations in sensitivity, which affects their ability to detect magnetic fields with high precision and efficiency, leading to potential increases in power consumption and noise interference.
Innovation Solution
The magnetic sensor design incorporates a specific configuration of magnetic and conductive elements, where magnetic elements and conductive members overlap in particular directions, concentrating magnetic fields and applying them efficiently to enhance sensitivity, while also using alternating currents to optimize resistance changes for improved detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional magnetic sensor configurations are used, then device simplicity is maintained, but sensitivity is insufficient
Solution Approach 1:
The magnetic sensor is divided into multiple magnetic elements (first, second, third, and fourth magnetic elements) arranged in a specific pattern. Each element contributes to detecting different components of the magnetic field, enabling high-sensitivity detection through segmented measurement rather than relying on a single complex element
Solution Approach 2:
Multiple magnetic elements are combined with multiple conductive members in an integrated structure where the magnetic elements and conductive members overlap in specific directions. This merging creates a unified sensing system that achieves high sensitivity without requiring externally complex additional components
2Measurement precision
If higher sensitivity detection is pursued, then measurement precision improves, but power consumption increases
Solution Approach 1:
The sensor utilizes the dynamic response of magnetic elements to alternating magnetic fields, where the resistance changes dynamically in response to applied magnetic fields. This dynamic operation allows sensitive detection while maintaining efficient power usage through alternating current excitation rather than continuous high-power operation
Solution Approach 2:
The sensor operates by detecting changes in resistance parameters of magnetic elements when exposed to magnetic fields. By monitoring resistance parameter variations rather than requiring high continuous power input, the system achieves high sensitivity with controlled power consumption
3Measurement precision
If magnetic field concentration is increased, then detection sensitivity improves, but noise interference increases
Solution Approach 1:
Different magnetic elements are positioned to detect different local components of the magnetic field with specific orientations. The conductive members are arranged to interact with specific magnetic elements in controlled ways, creating localized detection zones that concentrate magnetic field sensing while rejecting noise from other directions through the specific overlapping configuration
4Measurement precision
If multiple magnetic elements are used to improve sensitivity, then measurement precision increases, but device complexity increases
Solution Approach 1:
Each magnetic element serves multiple functions: detecting magnetic field components, interacting with conductive members to produce resistance changes, and contributing to the overall differential measurement. The conductive members similarly serve multiple elements, creating a multi-functional integrated structure that achieves high sensitivity without proportionally increasing component count
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 configuration increases the sensitivity of magnetic field detection, reduces power consumption, and suppresses noise interference, allowing for more precise and efficient magnetic field sensing.
Implementation Method 1
magnetic elements and conductive members overlap in particular directions, concentrating magnetic fields and applying them efficiently to enhance sensitivity
Implementation Method 2
using alternating currents to optimize resistance changes for improved detection
Data Source
AI summary
According to one embodiment, a magnetic sensor includes a first magnetic element, a second magnetic element, a third magnetic element located between the first and second magnetic elements in a first direction, a fourth magnetic element located between the third and second magnetic elements in the first direction, a first conductive member, a second conductive member, a third conductive member located between the first and second conductive members in the first direction, a fourth conductive member located between the third and second conductive members in the first direction, a first magnetic member, a second magnetic member, a third magnetic member located between the first and second magnetic members in the first direction, a fourth magnetic member located between the third and second magnetic members in the first direction, and a fifth magnetic member located between the third and fourth magnetic members in the first direction.