Thin-Film Sensor Stack on Metallic Tube
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Solution Overview
Problem
Existing metallic tube structures with thin-film sensors face challenges in high-temperature applications above 300°C due to sensor degradation and the complexity of manual adhesive-based mounting, which limits their reliability and increases costs.
Innovation Solution
A metallic tube structure with a sensor structure formed as a stack of thin-film layers, mechanically bonded to the tube surface using a protective member, allowing for automated industrial processing and enhanced thermal conductivity, without the need for adhesives, ensuring sensor durability and reliability in harsh environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive-based mounting is used for thin-film sensors on metallic tubes, then sensor mounting is achieved, but the application is restricted to temperatures below 300°C and requires precise manual work
Solution Approach 1:
The patent replaces the chemical adhesive bonding system with a mechanical bonding system. The thin-film sensor structure is mechanically bonded to the metallic tube surface through direct mechanical attachment methods, eliminating the temperature limitations of adhesive materials while maintaining reliable sensor mounting in high-temperature environments above 300°C
Solution Approach 2:
The patent changes the bonding mechanism parameter from chemical (adhesive) to mechanical (direct bonding). This parameter change enables the sensor structure to withstand high temperatures by using mechanical bonding methods that are not subject to the thermal degradation constraints of adhesive materials
2Reliability
If manual mounting of sensors in grooves is performed, then sensor protection is achieved, but the process requires significant manual work and experience
Solution Approach 1:
The patent enables self-service manufacturing by using thin-film sensor structures that can be directly bonded to the tube surface without requiring manual groove cutting, sensor placement, or complex assembly procedures. The simplified structure allows for automated manufacturing processes while maintaining sensor protection
Solution Approach 2:
The patent segments the sensor structure into a thin-film configuration that can be independently applied and bonded to the tube surface. This segmentation eliminates the need for complex groove structures and manual assembly, allowing for simplified, automated manufacturing while maintaining protective capabilities
3Extent of automation
If thin-film sensors are used with adhesive mounting, then sensor integration is achieved, but automated industrial processing is not possible
Solution Approach 1:
The patent replaces adhesive-based mounting with mechanical bonding, enabling automated industrial processing. The mechanical bonding approach allows for precise, repeatable sensor attachment through automated deposition and bonding processes, eliminating the need for manual adhesive application and positioning while maintaining high manufacturing precision
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 the use of metallic tube structures with integrated sensors in high-temperature applications, providing reliable monitoring of physical parameters while maintaining mechanical rigidity and preventing sensor degradation, thus reducing maintenance and operational costs.
Implementation Method 1
the first electrically insulating thin-film layer is mechanically bonded to the outer surface of the first tubular portion
Implementation Method 2
the first electrically insulating thin-film layer is arranged to electrically insulate the at least one electrically conducting thin-film layer from the first tubular portion
Implementation Method 3
the protective member is arranged in direct contact with the at least a portion of the sensor structure and at least a part of the first tubular portion
Data Source
AI summary
Metallic tube structure comprises a first tubular portion and a sensor structure. A sensor of the sensor structure is configured to detect a physical parameter of the metallic tube structure. The sensor structure is formed as a stack of thin-film layers. The stack comprises at least a first electrically insulating thin-film layer and at least one electrically conducting thin-film layer. The first electrically insulating thin-film layer is in mechanically bonded to the outer surface of the first tubular portion and is arranged to electrically insulate the at least one electrically conducting thin-film layer from the first tubular portion. A portion of the sensor structure is covered by a protective member, the protective member being arranged in direct contact with the at least a portion of the sensor structure and at least a part of the first tubular portion.