Smart Ring Inner Electrode Structure for Accurate Physiological Sensing
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Solution Overview
Problem
Existing smart ring devices face challenges in efficiently and accurately monitoring physiological parameters due to limited electrode contact area and complexity in electrode configuration, which affects detection efficiency and accuracy.
Innovation Solution
A smart ring device with a housing comprising an outer and inner ring, electrodes on the inner surface, and an accommodation space for electronic components, where the electrodes are configured to enclose a large contact area with the finger skin, and a circuit board secured by locating components, enabling efficient physiological signal acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrodes are configured to enclose large contact area with finger skin, then detection accuracy of physiological parameters is improved, but device complexity increases
Solution Approach 1:
The electrode system is segmented into multiple independent electrodes (first electrode, second electrode, third electrode) distributed at different positions on the inner surface of the housing. Each electrode can be independently configured and connected to the circuit board, allowing for optimized contact area without requiring a single complex electrode structure. This segmentation enables improved detection accuracy while maintaining manageable device complexity.
Solution Approach 2:
The electrodes are arranged in a three-dimensional spatial configuration on the inner surface of the housing, utilizing circumferential and axial dimensions. The first electrode is positioned at a first position, the second electrode at a second position, and the third electrode at a third position, creating a multi-dimensional contact arrangement that increases effective contact area with the finger skin without planar complexity.
2Productivity
If multiple electrodes are arranged on the inner surface of the housing, then physiological signal acquisition capability is improved, but manufacturing complexity increases
Solution Approach 1:
The housing structure serves multiple functions: it provides mechanical support, defines the accommodation space for electronic components, and carries the electrodes on its inner surface. The circuit board is universally connected to all electrodes and electronic components, serving as a central hub for both signal acquisition and component integration. This multi-functionality reduces the need for additional specialized components, simplifying manufacturing despite the presence of multiple electrodes.
Solution Approach 2:
The circuit board provides a common reference potential and connection point for all electrodes (first, second, and third electrodes). By connecting all electrodes to the same circuit board, the system achieves equipotentiality in terms of electrical reference, which simplifies the manufacturing process compared to having independently wired electrodes. The circuit board acts as a unified interface that standardizes the connection of multiple electrodes.
3Manufacturing precision
If circuit board is secured by locating components, then assembly precision is improved, but device complexity increases
Solution Approach 1:
The locating components are pre-integrated into the housing structure during housing manufacturing, rather than being added as separate assembly steps. The housing is designed with built-in locating features that automatically position the circuit board when assembled. This preliminary action ensures assembly precision without requiring complex multi-step assembly procedures or additional locating mechanisms, thereby avoiding increased device complexity.
Data Source
AI summary
A smart ring device, including: a housing including an outer ring, an inner ring, and an accommodation space located between the outer ring and the inner ring; at least one electronic component, arranged in the accommodation space; and a first electrode and a second electrode, spaced apart alogn a circumferential direction of the inner surface of the housing and electrically connected to the at least one electronic component; a locating component at least partially arranged within the accommodation space; and a circuit board, wherein the circuit board includes a locating aperture adapted to the locating component, a first end of the locating component being connected to the outer ring, and a second end of the locating component being connected to the first electrode or the second electrode through the locating aperture on the circuit board.