Myoelectric Sensor Electrode Sheet Fixing for Skin Stress Reduction
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Solution Overview
Problem
Current myoelectric sensors face challenges in achieving improved detection accuracy for muscle movement, with existing designs often resulting in noise due to deformation and stress on the skin from adhesive materials.
Innovation Solution
A myoelectric sensor design featuring a wearable, deformable portion with an electrode sheet and interconnect members that maintain close adhesion to the skin, reducing noise and stress, while improving detection accuracy through a grid arrangement of bioelectrode units connected by flexible printed circuit boards and secure fixing members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive materials are used to fix the electrode sheet to the skin, then the electrode sheet can be secured in place, but noise and stress on the skin increase
Solution Approach 1:
The patent introduces an intermediate layer between the electrode sheet and the skin that distributes the fixing force and reduces direct stress concentration. This intermediary structure allows secure fixation while minimizing harmful effects on the skin surface.
Solution Approach 2:
The electrode sheet is designed as a flexible thin film structure that can conform to the skin surface without creating excessive stress. The flexible nature of the film allows it to be secured while adapting to skin movements and reducing noise generation.
2Ease of operation
If the wearable portion deforms to follow skin movement, then comfort and skin contact are improved, but detection accuracy may deteriorate due to deformation noise
Solution Approach 1:
The electrode sheet is divided into multiple independent electrode units that can deform locally without affecting the entire structure. This segmentation allows the wearable portion to follow skin movements while maintaining stable electrical contacts for accurate detection.
Solution Approach 2:
The patent designs the electrode sheet with dynamic characteristics that allow it to adapt to skin movements. The flexible structure dynamically adjusts to skin deformation while maintaining consistent electrical contact, thereby preserving detection accuracy during physical activity.
Data Source
AI summary
A myoelectric sensor includes a wearable portion configured to be worn on a living body and deformable in response to deformation of the living body, an electrode sheet disposed on a surface of the wearable portion, and fixing members configured to fix the electrode sheet to the surface, wherein the electrode sheet includes a plurality of bioelectrode units, and interconnect members each electrically connecting two bioelectrode units among the plurality of bioelectrode units, wherein the interconnect members are located between the wearable portion and the fixing members, and the fixing members press the interconnect members to the surface.