Long-wave Infrared Detecting Element Using Thermo-electromagnetic Conversion
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Solution Overview
Problem
Current uncooled infrared detecting devices face challenges in achieving small size, low power consumption, low cost, and fast response at room temperature while efficiently converting infrared radiation into electrical signals.
Innovation Solution
A long-wave infrared detecting element utilizing a thermo-electromagnetic detector with a magnetic field generator, a substrate, and a support unit that absorbs infrared radiation, generating an electrical signal through a magnetic-electric converter, which includes a Hall plate with specific dopant concentration and ionization energy to optimize temperature-dependent Hall voltage changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional uncooled infrared detecting devices are used, then infrared radiation detection is achieved, but device size is large and power consumption is high
Solution Approach 1:
The patent changes the detection mechanism parameter from conventional thermal detection to thermo-electromagnetic detection, utilizing the relationship between temperature changes and electromagnetic signal generation. This parameter change enables room temperature operation with reduced power consumption while maintaining detection efficiency through the magnetic-electric converter's response to thermal fluctuations.
Solution Approach 2:
The patent replaces conventional mechanical or thermal detection systems with a thermo-electromagnetic detection system. The magnetic-electric converter transforms thermal energy changes directly into electromagnetic signals, substituting traditional detection mechanisms and achieving lower power consumption with comparable or improved reliability.
2Speed
If conventional infrared detecting devices are used, then detection function is provided, but response speed is slow
Solution Approach 1:
The patent substitutes slow thermal response mechanisms with a thermo-electromagnetic conversion system. The magnetic-electric converter directly translates temperature changes into electrical signals through electromagnetic induction, eliminating intermediate conversion steps and achieving faster response speeds without significantly increasing structural complexity.
3Weight of moving object
If conventional infrared detecting devices are used, then infrared detection is achieved, but device size is large for portability
Solution Approach 1:
The patent changes the fundamental detection parameter from bulk thermal measurement to localized thermo-electromagnetic conversion. The magnetic-electric converter operates at the micro-scale, detecting temperature changes through electromagnetic signal generation rather than requiring large thermal mass, thereby reducing device weight while maintaining or improving detection precision.
4Ease of manufacture
If conventional infrared detecting devices are used, then detection capability is provided, but manufacturing cost is high
Solution Approach 1:
The patent replaces complex cooling and thermal management systems required by conventional devices with a simple thermo-electromagnetic conversion system. The magnetic-electric converter naturally operates at room temperature, eliminating the need for expensive cryogenic equipment or active cooling mechanisms, thereby reducing manufacturing costs while ensuring reliable room temperature operation.
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
The solution enables efficient conversion of infrared radiation into electrical energy, providing a compact, low-power, and cost-effective long-wave infrared detecting system with real-time temperature measurement capabilities.
Implementation Method 1
an support unit that is provided on the substrate and supports the magnetic-electric converter in a state in which the magnetic-electric converter is spaced apart from the substrate, the support unit being configured to generate heat by absorbing incident infrared radiation
Implementation Method 2
a magnetic-electric converter that is spaced apart from the substrate and configured to generate an electrical signal based on the magnetic field generated by the magnetic field generator
Implementation Method 3
The Hall plate may include an extrinsic semiconductor material doped with a dopant. In a voltage bias mode in which a constant voltage is applied between the pair of bias electrodes, Hall voltage generated in the Hall plate may decrease as a temperature of the Hall plate increases
Implementation Method 4
a magnetic field generator configured to generate a magnetic field
Implementation Method 5
the electrical signal changes corresponding to temperature changes of the magnetic-electric converter based on the incident infrared radiation directly absorbed in the magnetic-electric converter and temperature changes of the magnetic-electric converter based on the incident infrared radiation absorbed in the support unit
Data Source
AI summary
Provided is a long-wave infrared detecting element including a magnetic field generator configured to generate a magnetic field, a substrate provided on the magnetic field generator, a magnetic-electric converter that is spaced apart from the substrate and configured to generate an electrical signal based on the magnetic field generated by the magnetic field generator, and an support unit that is provided on the substrate and supports the magnetic-electric converter in a state in which the magnetic-electric converter is spaced apart from the substrate, the support unit being configured to generate heat by absorbing incident infrared radiation, wherein the electrical signal changes corresponding to temperature changes of the magnetic-electric converter based on the incident infrared radiation directly absorbed in the magnetic-electric converter and temperature changes of the magnetic-electric converter based on the incident infrared radiation absorbed in the support unit.