High Thermal Conductivity Cover for Sensor Temperature Uniformity
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Solution Overview
Problem
The detection accuracy of gas information is reduced due to a large temperature difference between sensors in detection devices, primarily caused by low thermal conductivity of the substrate, leading to uneven temperature and humidity distribution.
Innovation Solution
A detection device with a cover having high thermal conductivity is used to contact the sensor substrates, ensuring uniform temperature distribution by facilitating heat transfer between sensors and the cover, thereby reducing temperature differences between sensors and improving detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a substrate with low thermal conductivity is used to mount sensors, then the substrate provides good electrical insulation and mounting stability, but the temperature difference between sensors becomes large
Solution Approach 1:
A heat dissipation plate with high thermal conductivity is introduced as an intermediary component between the sensors and the low thermal conductivity substrate. The heat dissipation plate makes contact with the rear surfaces of multiple sensors to conduct heat away, while being electrically isolated from conductor patterns through insulation structures. This mediator enables thermal equilibrium without compromising electrical insulation or mounting stability.
Solution Approach 2:
The detection device employs a composite structure combining materials with different thermal conductivity characteristics. The substrate maintains low thermal conductivity for electrical insulation, while the heat dissipation plate uses high thermal conductivity material (such as metal) to equalize temperatures. This composite approach allows simultaneous achievement of electrical isolation and thermal uniformity.
2Reliability
If sensors are mounted on a substrate with low thermal conductivity, then electrical insulation is maintained, but detection accuracy of gas information is reduced
Solution Approach 1:
The heat dissipation plate serves as a mediator that improves measurement precision by maintaining uniform temperature across all sensors, thereby enhancing gas detection accuracy. Simultaneously, insulation structures maintain electrical isolation between the heat dissipation plate and conductor patterns, preserving the electrical insulation required for reliable operation.
Solution Approach 2:
The invention changes the thermal parameter (thermal conductivity) of the heat dissipation plate to be high, while maintaining electrical insulation through insulating layers. This parameter change allows the system to achieve both improved temperature uniformity for accurate measurement and maintained electrical insulation for reliability.
3Temperature
If a cover is added to improve thermal conductivity, then temperature uniformity is improved, but device complexity increases
Solution Approach 1:
The heat dissipation plate performs multiple functions simultaneously: it conducts heat to equalize temperatures across sensors, provides mechanical support for sensor mounting, and when combined with insulation structures, maintains electrical isolation. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving temperature uniformity.
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 implementation of a high thermal conductivity cover reduces temperature differences between sensors and improves detection accuracy by maintaining uniform gas temperature, enhancing the sensitivity and reliability of gas detection.
Implementation Method 1
A detection device with a cover having high thermal conductivity is used to contact the sensor substrates, ensuring uniform temperature distribution by facilitating heat transfer between sensors and the cover
Data Source
AI summary
A detection device includes a plurality of sensors each of which is configured to detect one or more substances causing an odor in a gas, a storage chamber that stores the plurality of sensors, one or more sensor substrates each forming at least a part of a lower surface of the storage chamber and each having an upper surface on which one or more of the plurality of sensors are mounted, and a cover provided on the one or more of sensor substrate, having one or more openings that expose the plurality of sensors, and being in contact with the upper surface of the one or more sensor substrates.