Stretchable Surface Electrode Structure for Noise-Stable Contact
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Solution Overview
Problem
Conventional electrodes face challenges in following surface changes, leading to noise issues when subjected to tensile or contraction stress on changing surfaces such as biological skins and device surfaces.
Innovation Solution
A surface electrode design featuring stretchable wires and insulators that allow the electrode to conform to surface changes, reducing noise by maintaining electrical contact and stability during expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal electrodes and wires are used without modifications, then the electrode structure is simple and easy to manufacture, but the electrode cannot follow surface changes and generates noise
Solution Approach 1:
The patent applies the dynamics principle by making both the wire and insulator stretchable, allowing the electrode structure to dynamically adapt to surface changes. The wire comprises a core wire and an outer wire that can expand and contract, while the insulator is designed with stretchable properties to accommodate these movements. This dynamic design enables the electrode to follow surface changes without generating noise, directly resolving the contradiction between signal quality and structural simplicity.
Solution Approach 2:
The patent employs parameter changes by modifying the physical properties of the wire and insulator to be stretchable. The wire's structure is changed to include expandable elements, and the insulator's material properties are selected to allow stretching. These parameter changes enable the electrode to adapt to surface deformations while maintaining electrical connectivity and insulation, thereby improving signal quality without excessive structural complexity.
2Reliability
If the electrode is made rigid to maintain structural stability, then manufacturing is easier, but the electrode cannot conform to changing surfaces and produces noise
Solution Approach 1:
The patent applies flexible shells and thin films by using a stretchable insulator that covers the wire. This insulator is designed to be flexible enough to allow the wire to expand and contract while providing necessary insulation. The flexible insulator enables the electrode to conform to changing surfaces without noise generation, while the overall structure remains manufacturable using conventional techniques adapted for stretchable materials.
Solution Approach 2:
The patent employs composite materials by combining a core wire with an outer wire structure, and selecting insulator materials that possess both insulation properties and stretchability. This composite approach allows the electrode to achieve both noise reduction through surface conformity and ease of manufacture by using materials that can be processed with modified conventional techniques.
3Reliability
If the wire and insulator are made stretchable to follow surface changes, then noise is reduced and signal quality improves, but the device complexity increases
Solution Approach 1:
The patent applies dynamics by designing the wire as a dynamic structure with core and outer components that can expand and contract. The insulator is also designed to be dynamic and stretchable to accommodate wire movements. This dynamic design allows the electrode to maintain signal stability on changing surfaces while the complexity is managed through functional integration rather than excessive structural elements.
Solution Approach 2:
The patent uses flexible shells and thin films by implementing a stretchable insulator that acts as a flexible protective layer around the wire. This insulator allows the wire to dynamically follow surface changes while providing necessary insulation. The approach reduces noise and maintains signal stability without requiring overly complex structural designs, as the flexibility is achieved through material selection and structural configuration.
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 electrode effectively follows surface changes while minimizing noise, ensuring reliable signal acquisition and stability on dynamic surfaces.
Implementation Method 1
a stretchable wire electrically connecting the plurality of electrode elements; and a stretchable insulator covering a side of the stretchable wire adjacent to the plurality of electrode elements
Data Source
AI summary
A surface electrode having a first surface and a plurality of electrode elements disposed on the first surface and spaced from each other in a manner so as to be configured to contact a measured surface of an object to be measured; a stretchable wire electrically connecting the plurality of electrode elements; and a stretchable insulator covering a side of the stretchable wire adjacent to the electrode elements.