Glove Sensor Stress Correction via Preliminary Action
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Glove-type wearable sensors with film-like pressure sensors incorporated into thin work gloves face challenges in accurately detecting pressure due to initial stress reactions, resulting in unnecessary sensor values at the beginning of wear.
Innovation Solution
A sensing data correction system that corrects sensing data by using a data correction unit to account for stresses on the pressure sensor, comprising a flexible printed circuit, a sheet-like pressure sensitive element, and a protective film, bonded in a three-dimensional orthogonal coordinate system, to isolate true pressure detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a film-like pressure sensor is incorporated into a thin work glove to achieve good wearing feeling and fit, then the wearing comfort and fit are improved, but initial stress reactions cause unnecessary sensor values and reduce measurement accuracy
Solution Approach 1:
The patent applies preliminary action by performing stress relaxation processing before actual pressure measurement. The control unit executes this processing when the wearable sensor is first worn, eliminating initial stress reactions from the pressure sensor before accurate measurements begin. This preparatory step ensures the sensor is in a stable state for subsequent measurements.
Solution Approach 2:
The patent converts the harmful initial stress reactions into a beneficial process by using them as a trigger condition. When the control unit detects stress relaxation processing conditions, it identifies this as the appropriate moment to execute correction, transforming the problematic initial stress state into a useful signal for initiating the stress relaxation processing routine.
2Measurement precision
If stress relaxation processing is executed to correct initial stress reactions, then measurement accuracy is improved, but processing time is increased
Solution Approach 1:
The patent applies partial action by executing stress relaxation processing only when specific conditions are met, rather than continuously. The control unit determines whether stress relaxation processing should be executed based on detected conditions, performing the processing only when necessary to correct initial stress reactions while avoiding unnecessary processing during normal operation.
3Strength
If multiple layers (flexible printed circuit, pressure sensitive element, protective film) are bonded together to create the pressure sensor structure, then sensor durability and protection are improved, but initial stress reactions from bonding occur
Solution Approach 1:
The patent extracts and separates the initial stress reaction component from the actual pressure measurement. The control unit identifies and removes the stress reaction component generated by the bonded structure, isolating it from the true pressure signal. This allows the multi-layer bonded structure to maintain its structural benefits while eliminating its adverse measurement effects.
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 effectively removes the influence of initial stress reactions, ensuring that the sensing data accurately reflects the pressure applied, providing reliable and accurate pressure detection.
Implementation Method 1
a film-like or sheet-like pressure sensor incorporated into a fingertip of a thin work glove
Data Source
AI summary
A sensing data correction system corrects sensing data acquired from a glove-type wearable sensor in which a film-like pressure sensor is incorporated into a fingertip, and includes a data correction unit for correcting the sensing data. Three coordinate axis directions in a three-dimensional orthogonal coordinate system are assumed to be a vertical direction, a longitudinal direction of the pressure sensor, and a width direction of the pressure sensor, and the pressure sensor is obtained by laminating one flexible printed circuit, one sheet-like pressure sensitive element, and one protective film in the vertical direction. An upper surface of the flexible printed circuit and a lower surface of the pressure sensitive element are bonded and fixed to each other, and an upper surface of the pressure sensitive element and a lower surface of the protective film are bonded and fixed to each other. The data correction unit executes sensing data correction processing.