Ring Biosignal Detector Finger Electrode Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing biosignal detection methods, such as skin conductance measurement at the wrist, face accuracy issues due to decreased sensitivity of sympathetic nerves, leading to decreased measurement accuracy.
Innovation Solution
A ring-type biosignal detecting apparatus with a pair of electrodes disposed along the inner surface of a ring body, allowing for contact with a user's finger, and a reference unit on the outer surface to identify the reference position, which includes an ornament, to improve accuracy and stability of biosignal measurement, and includes a processor to verify measured values and apply physical stimuli when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If skin conductance is measured at the wrist, then the measurement location is convenient, but the sensitivity to sympathetic nerves decreases and measurement accuracy decreases
Solution Approach 1:
The patent changes the measurement location parameter from wrist to finger, specifically targeting areas with higher sympathetic nerve sensitivity such as the fingertip, to improve measurement accuracy while maintaining ease of use through a ring-type wearable design
2Measurement precision
If electrodes are disposed on the inner surface of the ring body, then contact with finger is improved and measurement accuracy is enhanced, but device complexity increases
Solution Approach 1:
The patent uses a ring-type main body with curved inner surface that naturally conforms to the finger shape, allowing electrodes to be disposed along the curved surface without requiring complex positioning mechanisms, thus maintaining simplicity while ensuring good contact
Solution Approach 2:
The ring-type main body serves multiple functions: it provides the structural framework, ensures proper positioning on the finger through its circular geometry, and supports the electrode arrangement, thereby reducing overall device complexity
3Reliability
If a reference unit is added to identify reference position, then wearing position stability is improved and measurement reliability is enhanced, but device complexity increases
Solution Approach 1:
The reference unit may utilize visual characteristics such as color or pattern differences on the outer surface of the ring to indicate the reference position, allowing users to easily identify and maintain proper wearing orientation without complex mechanical or electronic systems
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
Enhances the accuracy of biosignal measurement by minimizing errors caused by wearing position changes and ensures measured values fall within a reference range, improving the reliability of detecting electrical conductance of the skin.
Implementation Method 1
The biosignal may be an electrical conductance of skin
Data Source
AI summary
A biosignal detecting apparatus and method thereof are disclosed, including a ring-type main body, and a pair of electrodes configured to be in contact with a finger of a user and to detect a biosignal of the user. An electrode of the pair of electrodes is disposed along an inner surface of the main body.