Absorbent Article Saturation Detection with Adaptive Thresholds
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Solution Overview
Problem
Existing absorbent articles lack accurate detection of wetness and saturation, particularly influenced by factors such as tightness, motion, and orientation, leading to inadequate care for incontinence management in institutional settings.
Innovation Solution
A sensor system with adjustable saturation thresholds based on absorbent article tightness, wearer movement, and orientation, using conductive lines and an attachment unit to monitor and adjust detection parameters for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed saturation threshold is used for detection, then the device complexity is reduced, but the measurement precision deteriorates due to inability to account for tightness, motion, and orientation variations
Solution Approach 1:
The saturation threshold is transformed from a fixed value to a dynamic parameter that automatically adjusts based on detected wear conditions. The system continuously monitors tightness, motion, and orientation, then modifies the threshold accordingly, enabling the detection system to adapt to varying wear states without manual intervention.
Solution Approach 2:
The system implements feedback by using detected wear parameters (tightness, motion, orientation) to modify the saturation threshold. The detection system monitors these conditions and feeds back information to adjust the threshold, creating a closed-loop system that improves accuracy by continuously adapting to changing wear states.
2Measurement precision
If the saturation threshold is automatically adjusted based on wear conditions, then the measurement precision improves, but the device complexity increases due to additional sensors and processing
Solution Approach 1:
The detection system achieves multi-functionality by using a single integrated sensor array to simultaneously monitor multiple wear conditions (tightness, motion, orientation) and saturation levels. This universal sensor system performs multiple detection functions without requiring separate specialized sensors for each parameter, thereby managing complexity while improving precision.
Solution Approach 2:
The system manages complexity by dynamically changing the saturation threshold parameter based on detected wear conditions rather than adding complex hardware. The same sensor infrastructure supports both wear detection and saturation detection, with the threshold parameter being adjusted algorithmically based on the wear state, thereby improving precision without proportionally increasing device complexity.
3Productivity
If real-time monitoring is implemented to detect saturation, then the productivity of care scheduling improves, but the use of energy increases due to continuous sensor operation
Solution Approach 1:
The sensor system implements periodic action by monitoring wear conditions and saturation at regular intervals rather than continuously. The system activates sensors periodically to detect changes in wear state and saturation, allowing for real-time monitoring capability while reducing overall energy consumption compared to continuous operation. This periodic detection maintains productivity by capturing essential saturation information at meaningful time points.
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 wetness and saturation detection in absorbent articles, facilitating timely care and reducing health risks by providing real-time monitoring and scheduling in institutional settings.
Implementation Method 1
at least two carbon lines along the length of an impermeable layer of an absorbent article... detecting a sense signal from the absorbent article
Data Source
AI summary
An adjustable threshold is used to determine the saturation of an absorbent article, in order to improve the accuracy. The adjustable threshold may be adjusted based on the tightness/looseness of the absorbent article on its wearer and/or based on the motion/movement of the wearer of the absorbent article wearer.