Magnetic Sensor Conductive Layer Magnetization Initialization
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Solution Overview
Problem
Magnetic sensors using magnetic layers face challenges in maintaining stable operation due to unintended surrounding magnetic fields, which can alter the magnetic properties of the sensor elements, leading to inaccurate detection.
Innovation Solution
The magnetic sensor incorporates an element portion with multiple magnetic elements and conductive members, along with a conductive layer. The conductive layer is used to initialize the magnetization of the magnetic layers, ensuring stable detection by suppressing noise and enhancing sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If magnetic sensors use magnetic layers for detection, then sensitivity is improved, but stability deteriorates due to unintended surrounding magnetic fields altering magnetic properties
Solution Approach 1:
The conductive layer is used to initialize the magnetization of the magnetic layers before detection operations begin. This preliminary action sets the magnetic elements to a known initial state, ensuring stable and reproducible detection results even in the presence of unintended surrounding magnetic fields.
2Measurement precision
If magnetic layers are used in the sensor element, then detection capability is enhanced, but susceptibility to external magnetic interference increases
Solution Approach 1:
By applying a initializing current to the conductive layer before detection, the magnetic layers are set to a predetermined magnetization state. This preliminary action counteracts the effects of unintended surrounding magnetic fields, allowing the sensor to maintain high detection capability while reducing susceptibility to external interference.
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 allows for stable and accurate detection of magnetic fields by initializing the magnetization of the magnetic layers, thereby reducing the impact of unintended magnetic fields and improving sensitivity.
Implementation Method 1
a conductive layer... The conductive layer is used to initialize the magnetization of the magnetic layers
Implementation Method 2
a first magnetic element... a second magnetic element... stable and accurate detection of magnetic fields
Data Source
AI summary
According to one embodiment, a magnetic sensor includes an element portion and a conductive layer. The element portion includes a first magnetic element, a second magnetic element, a first conductive member, and a second conductive member. The first magnetic element includes a first end portion and a first other end portion. The second magnetic element includes a second end portion and a second other end portion. The first conductive member includes a first portion and a first other portion. The first portion corresponds to the first end portion. The first other portion corresponds to the first other end portion. The second conductive member includes a second portion and a second other portion. The second portion corresponds to the second end portion. The second other portion corresponds to the second other end portion. The conductive layer includes a first conductive portion and a first other conductive portion.