Magnetic Sensor Testing Device Thermal Isolation
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Solution Overview
Problem
The existing magnetic sensor testing devices face issues where the performance of electromagnets is significantly affected by heat, leading to unstable magnetic field characteristics due to the diffusion of heat from the Peltier element to the magnetic generating means.
Innovation Solution
A magnetic sensor testing device is designed with a temperature regulator that applies localized heat to the magnetic sensor while maintaining a controlled magnetic field, using a controller to manage both the temperature and magnetic field conditions, and incorporates a system with separate refrigerant flow paths to adjust the temperature precisely, ensuring the electromagnet operates within a stable temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the Peltier element is used to apply heat to the magnetic sensor through the placing table, then the temperature of the magnetic sensor can be regulated, but heat diffuses on the placing surface causing the temperature of the magnetic generating means to rise and performance to change
Solution Approach 1:
The placing table is divided into a first placing table for the magnetic sensor and a second placing table for the magnetic generating means. This segmentation physically separates the heat application zone from the electromagnet zone, preventing heat diffusion to the electromagnet while maintaining independent temperature control capability.
Solution Approach 2:
A heat insulator is introduced between the first placing table and the second placing table. This intermediary component blocks heat transmission from the Peltier element to the magnetic generating means, allowing temperature regulation of the magnetic sensor without affecting the electromagnet's performance.
2Manufacturing precision
If heat is applied locally to the magnetic sensor using a temperature regulator, then precise temperature control is achieved, but the electromagnet must be positioned around the main surface of the magnetic sensor which complicates the device structure
Solution Approach 1:
The temperature regulator is positioned above the main surface of the magnetic sensor rather than around it, utilizing the vertical dimension for heat application. This allows precise local temperature control while keeping the electromagnet positioned around the magnetic sensor without structural complexity.
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 approach allows for precise temperature and magnetic field control, preventing performance degradation of the electromagnets and enabling efficient testing of magnetic sensors under predetermined conditions, thereby maintaining consistent magnetic field characteristics.
Implementation Method 1
a Peltier element, and a temperature regulator connected to one main surface of the Peltier element via a heat conductor
Implementation Method 2
heat diffuses on the placing surface
Implementation Method 3
magnetic generating means that applies a predetermined magnetic field to the magnetoresistance effect element placed on this placing table
Data Source
AI summary
Provided is a magnetic sensor testing device capable of preventing performance of an electromagnet from greatly changing due to heat applied to a magnetic sensor.A magnetic sensor testing device includes electromagnets 50 and 60 that apply a magnetic field to a magnetic sensor, temperature regulators 30 and 40 that regulate a temperature of the magnetic sensor by locally applying heat to the magnetic sensor, and a controller that controls the electromagnets 50 and 60 and the temperature regulators 30 and 40, in which the controller tests the magnetic sensor in a state in which the magnetic field is applied to the magnetic sensor by the electromagnets 50 and 60 while the heat is applied to the magnetic sensor by the temperature regulators 30 and 40.