Wearable Motion Sensor Fabric Using Resistance Change Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motion detection members suffer from low durability and discomfort due to the use of expandable/contractible conductive ink or resin materials, leading to issues with durability and wearability.
Innovation Solution
A motion detection member comprising a wearable part made of expandable/contractible fabric material with a wiring electrode part that includes conductive linear bodies, where the resistance value between first and second wiring parts changes with the motion of the wearing body, and the resistance value between the first and second electrode parts changes as the expanding/contracting portion expands/contracts, allowing for motion detection without requiring calibration and providing high durability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If expandable/contractible conductive ink is used for the detection part, then the motion detection member can detect motion, but the durability is low
Solution Approach 1:
The patent changes the material parameter from conductive ink to conductive fabric, fundamentally altering the durability characteristic while maintaining the motion detection function through electrical resistance changes
Solution Approach 2:
The patent uses a composite structure combining expandable/contractible fabric material with conductive material to create a detection part that maintains both flexibility for motion detection and durability through the fabric substrate
2Reliability
If a resin film is used as the base material for the detection part, then the motion detection member can detect motion, but the user feels uncomfortable when wearing it
Solution Approach 1:
The patent changes the base material parameter from resin film to expandable/contractible fabric material, fundamentally altering the comfort characteristic while maintaining the motion detection function
Solution Approach 2:
The patent makes the detection part homogeneous with the wearable part by using the same fabric material, eliminating the discomfort caused by heterogeneous materials like resin film
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 solution provides a highly durable and comfortable motion detection member that can detect motion accurately without calibration and has a wide permissible range of positional deviation, ensuring excellent wearing feeling and reliable detection.
Implementation Method 1
a contact state between the first wiring part and the second wiring part changes, so that a resistance value between the first electrode part and the second electrode part changes
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The present disclosure provides a motion detection member for detecting motion of a wearing body, the motion detection member including: a wearable part that is to be worn on the wearing body, the wearable part including an expanding/contracting portion that is configured from an expandable/contractible fabric material that expands/contracts as a result of the motion of the wearing body; and a wiring electrode part including: a wiring part provided at at least a portion of the expanding/contracting portion of the wearable part, the wiring part including a first wiring part including a conductive linear body and a second wiring part including a conductive linear body; and an electrode part including a first electrode part electrically connected to the first wiring part and a second electrode part electrically connected to the second wiring part, wherein, when the expanding/contracting portion of the wearable part, at which the wiring part is provided, expands/contracts as a result of the motion of the wearing body, a contact state between the first wiring part and the second wiring part changes, so that a resistance value between the first electrode part and the second electrode part changes.