Sensor Patch Band Stretch Feedback for Stable Electrode Contact
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Solution Overview
Problem
Existing sensor patches face issues with inconsistent pressing force due to improper stretch, leading to user discomfort or poor electrode-skin contact, resulting in unreliable measurements.
Innovation Solution
A system comprising a stretchable band with a non-stretchable ribbon and markers to indicate the desired stretch, allowing users to adjust the band's stretch for optimal pressing force, reducing discomfort and ensuring proper electrode contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the band is stretched to apply sufficient pressing force to ensure good electrode contact, then measurement reliability is improved, but user comfort deteriorates due to excessive pressing force
Solution Approach 1:
The patent implements a feedback mechanism through visual markers (first marker on the stretchable part, second marker on the non-stretchable element) that indicate the current stretch state of the band. This allows users to adjust the band stretch to achieve the optimal pressing force that ensures reliable electrode contact while avoiding excessive discomfort. The feedback loop enables users to self-regulate the pressing force to balance measurement quality and comfort.
2Measurement precision
If the band is stretched to create adequate pressing force for electrode contact, then measurement accuracy is improved, but device complexity increases due to need for stretch monitoring system
Solution Approach 1:
The patent uses visual markers that change their relative positional relationship to indicate the stretch state of the band. The first marker on the stretchable part and second marker on the non-stretchable element provide visual feedback about the band's stretch level, enabling users to adjust the pressing force to achieve optimal measurement accuracy without requiring complex electronic monitoring systems.
3Ease of operation
If the stretchable part is made more elastic to allow greater stretch, then ease of operation is improved, but manufacturing precision deteriorates due to difficulty in controlling stretch amount
Solution Approach 1:
The band is segmented into two distinct parts: a stretchable part made of elastic material that allows easy stretching and adjustment, and a non-stretchable element that provides structural stability and precise stretch indication. This segmentation enables the stretchable part to be highly elastic for ease of operation while the non-stretchable element ensures manufacturing precision by providing a stable reference for the markers and limiting excessive stretch.
4Device complexity
If the band is designed without markers to simplify the structure, then device complexity is reduced, but measurement precision deteriorates due to inability to monitor stretch amount
Solution Approach 1:
The patent incorporates simple visual markers (first marker on the stretchable part, second marker on the non-stretchable element) that provide clear visual indication of the band's stretch state. These simple markers enable precise stretch monitoring and guidance for optimal pressing force without adding significant device complexity, allowing users to accurately monitor and adjust the stretch amount.
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 system enables users to maintain the desired pressing force, improving comfort and measurement accuracy by ensuring consistent electrode-skin contact and reducing motion artifacts.
Implementation Method 1
a stretchable band that is worn by the user can be used to create such a pressing force. The pressing force that the band exerts to the sensor patch can be considered proportional to the stretch of the band.
Data Source
Figure 1a~1d
Figure 2a~2d
Figure 3a~4
AI summary
A system (10) for positioning a sensor patch on a user is provided, the system comprising a band (20) for creating a pressing force to the sensor patch when the band is stretched, the band comprising a stretchable part (22), and a first marker (25) located on the stretchable part, and a non- stretchable element (30), having a second marker (35), wherein the non-stretchable element (30) is a ribbon, mounted on the band (20) with a connector (55) or an elastic joint (51b) at one end and an elastic joint (51, 51a) at the other end, the ribbon even when taut, permitting the stretching of the band, and wherein a relative position of the first and second marker indicates an amount of stretch of the stretchable part. The user guided by the relative position of the first (25) and second (35) markers may take actions for the stretchable part (22) of the band to reach a desired stretch, which corresponds to a desired pressing force to the sensor patch. A corresponding method (100) for positioning a sensor patch on a user is also provided.