Segmented Electrode Belt for Curved Surface Adhesion
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Solution Overview
Problem
Electrocardiographic measurement apparatuses face challenges in achieving close attachment of electrodes to the curved surface of the human body, leading to reduced adhesion and detection accuracy due to increased non-contact areas.
Innovation Solution
A belt with a band-shaped body and multiple electrode pieces arranged in the short direction, connected by signal lines, allowing the electrodes to conform to the body surface and reduce noise from signal lines, while maintaining equal lengths and shapes for cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the area of the electrode surface is increased to increase detected intensity of electrocardiographic signal, then the detected signal intensity is improved, but the degree of adhesion of the electrode to the living body decreases due to increased non-contact areas on the curved surface
Solution Approach 1:
The electrode is divided into multiple electrode pieces (first, second, and third electrode pieces) arranged in the short direction of the belt. This segmentation allows each piece to conform to the curved surface of the living body, maintaining good adhesion while collectively providing sufficient contact area for signal detection.
Solution Approach 2:
The belt and electrode structure is designed to conform to the curved surface of the living body (upper arm). By adapting to the curvature of the body surface, the electrode pieces can maintain close contact across the entire electrode area, resolving the contradiction between large contact area and good adhesion.
2Reliability
If multiple electrode pieces are used to improve adhesion to the curved surface, then the degree of adhesion is improved, but the number of signal lines increases leading to increased noise
Solution Approach 1:
Multiple electrode pieces (first, second, and third electrode pieces) are electrically connected in series to form a single integrated electrode. This merging approach maintains good adhesion through multiple contact points while reducing the number of separate signal lines needed, thereby minimizing noise.
3Ease of manufacture
If the electrode is formed as a single large piece to simplify manufacturing, then manufacturing cost is reduced, but the ability to closely attach to the curved surface is compromised
Solution Approach 1:
The electrode is segmented into multiple pieces that can be manufactured separately and then assembled on the belt. This segmentation enables flexible adaptation to curved surfaces while maintaining manufacturing simplicity through modular construction.
Solution Approach 2:
Different portions of the electrode (first, second, and third electrode pieces at different positions in the short direction) are designed with specific characteristics optimized for their local position on the curved surface, enabling close attachment while maintaining ease of manufacture through standardized components.
Data Source
AI summary
To provide a belt that can be closely attached to an upper arm, and an electrocardiographic measurement apparatus. A belt includes a belt body formed in a band shape, and an electrode including a plurality of electrode pieces disposed on a main surface of the belt body, located side by side in a short direction of the belt body, and connected in series by a signal line.