Clip-On Sensor Testing for Conductive Absorbent Articles
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Solution Overview
Problem
Existing absorbent articles with integrated sensors for moisture detection are costly and not suitable for disposable use, lacking efficient quality assurance methods for sensor functionality before use.
Innovation Solution
A handheld computing device with a clip-on device for testing conductivity parameters of sensors in absorbent articles, allowing simultaneous verification of multiple sensors through data communication and processing to provide functional status indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex sensors with signal processing units and batteries are integrated into absorbent articles for moisture detection, then sensing capability is improved, but cost increases and the article becomes unsuitable for disposable use
Solution Approach 1:
The patent extracts the complex signal processing unit and battery from the sensor integrated into the absorbent article. Instead, a simple conductive sensor remains in the disposable article, while the complex processing electronics are separated into a reusable external device that communicates with the sensor via wireless or wired connection.
Solution Approach 2:
The external processing device serves multiple functions: it processes signals from the sensor, provides power to the sensor through the connection element, and can be reused across multiple absorbent articles. This multi-functional approach reduces overall system cost while maintaining sensing capability.
2Reliability
If sensors are integrated into disposable absorbent articles, then moisture monitoring is enabled, but quality assurance becomes difficult without complex testing equipment
Solution Approach 1:
The testing device uses the sensor's own conductive properties to perform self-testing. The connection element provides both power and a test signal through the sensor, allowing the sensor to automatically verify its own functionality without requiring complex external testing equipment.
Solution Approach 2:
The testing functionality is merged with the production line equipment. The same connection element used for normal sensor operation is also used for testing, combining the functions of operation and quality assurance into a single integrated process.
3Reliability
If sensors are exposed to moisture during use, then moisture detection function is activated, but sensor reliability for reuse is compromised
Solution Approach 1:
The system is segmented into a disposable portion (sensor in absorbent article) and a reusable portion (external processing device). The sensor that contacts moisture is discarded with the article, while the expensive electronics remain intact for reuse, eliminating the problem of moisture damage to reusable components.
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
Enables reliable and cost-effective quality control of sensor functionality in absorbent articles, ensuring correct operation before use and facilitating efficient production line testing.
Implementation Method 1
testing device for testing one or more conductivity parameters of a sensor-comprising absorbent article
Data Source
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AI summary
A testing device for testing one or more conductivity parameters of a sensor-comprising absorbent article, said device comprising: a computing device comprising a processor and an input receiver; a clip-on device comprising a power source, transmitter, a processing unit, and one or more electrical terminals in electrical communication with at least one of the transmitter and the processing unit; wherein said terminals are adapted to come into contact with corresponding connection tracks of a sensor, and wherein an absorbent article comprises said sensor; said computing device and said clip-on device are distinct components in data communication with each other and wherein a plurality of conductivity parameters are acquired by the clip-on device and transmitted by the transmitter to the computing device, wherein the acquired plurality of conductivity parameters are further processed by the processor and/or processing unit to provide an indication to a user related to the proper functioning of the sensor via a user interface comprised by said computing device and in data communication with said display.