FBG Sensor Package Layering for Stable Adhesive Attachment
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Solution Overview
Problem
Existing sensor attachment methods, such as FBG sensors, face issues with adhesive curing time and pressure-sensitive adhesion, leading to sensor position shifting and reduced sensitivity, especially in high places or places with unstable platforms, and require improved durability for outdoor use.
Innovation Solution
A sensor package design with a resin portion holding the FBG sensor and a pressure-sensitive adhesive layer on a substrate, allowing temporary fixation and strong adhesion to prevent sensitivity reduction, featuring a resin portion and adhesive layer to secure the sensor without gaps, and a covering material to protect against moisture and air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to attach sensor, then sensor can be fixed to structure, but attachment process takes time and sensor position may shift
Solution Approach 1:
The patent introduces a substrate as an intermediary component between the sensor and the structure. The substrate includes a first pressure-sensitive adhesive layer for temporary fixation and a second adhesive layer for strong bonding, mediating the attachment process to enable both quick positioning and reliable fixed attachment without prolonged curing time affecting sensor position
Solution Approach 2:
The attachment system is segmented into multiple functional layers: a first pressure-sensitive adhesive layer for temporary fixation during positioning, and a second adhesive layer for permanent strong bonding. This segmentation allows the attachment process to be divided into positioning phase and permanent fixation phase, resolving the time-stability contradiction
2Ease of operation
If pressure-sensitive adhesive is used to attach sensor, then easy attachment is achieved, but sensor sensitivity is greatly reduced
Solution Approach 1:
The adhesive system is segmented into two distinct layers with different functions: the first pressure-sensitive adhesive layer enables easy attachment and positioning, while the second adhesive layer provides strong bonding without compromising sensor sensitivity. This segmentation allows easy operation in the positioning phase while preserving measurement precision in the permanent attachment phase
Solution Approach 2:
The substrate acts as an intermediary that separates the sensor from direct contact with the structure through adhesive layers. The resin portion covering the sensor further mediates the interaction, allowing the sensor to maintain its sensitivity while the substrate handles the attachment function through appropriately selected adhesive layers
3Area of stationary object
If sensor is attached in high place or unstable platform, then measurement coverage is improved, but positioning accuracy deteriorates due to reduced workability
Solution Approach 1:
The attachment process is segmented into temporary fixation using pressure-sensitive adhesive and permanent bonding using the second adhesive layer. This segmentation enables easy positioning even in challenging environments like high places or unstable platforms, as the pressure-sensitive adhesive provides immediate hold without requiring complex positioning tools or stable working conditions
Solution Approach 2:
The substrate serves as an intermediary platform that simplifies sensor attachment in challenging environments. The pressure-sensitive adhesive layer on the substrate enables easy handling and positioning of the sensor package even when the operator is working in difficult conditions, improving workability without limiting measurement coverage
4Reliability
If sensor package is designed for outdoor use, then durability requirement is increased, but device complexity increases
Solution Approach 1:
The substrate performs multiple functions: it provides mechanical support for the sensor, enables attachment through adhesive layers, and offers protection through the resin portion. The covering material also serves dual purposes of mechanical protection and environmental sealing. This multi-functionality achieves outdoor durability without proportionally increasing device complexity
Solution Approach 2:
The resin portion and covering material form flexible protective enclosures around the sensor. These thin film-like structures provide environmental protection for outdoor use while adding minimal complexity to the overall device structure, achieving durability through simple protective layers rather than complex sealed housings
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 sensor package ensures easy attachment and positioning with maintained sensitivity, enhanced durability for outdoor use, and improved workability even in challenging environments.
Implementation Method 1
a first pressure-sensitive adhesive layer and a resin portion are provided on a first substrate; an adhesive layer is provided on a surface of the resin portion on a side opposite to the first substrate
Implementation Method 2
when the sensor package is attached to an object, the sensor package is temporarily fixed by the adhesive layer... it is important to strongly adhere the resin portion holding the FBG sensor to the object with an adhesive layer
Data Source
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AI summary
The present invention relates to a sensor package to be attached to an object, and the sensor package includes: a first substrate; an FBG sensor; a resin portion and a first pressure-sensitive adhesive layer positioned on the first substrate; and an adhesive layer positioned on a surface of the resin portion on a side opposite to the first substrate, in which the FBG sensor is held by the resin portion.