Motion Detection System Using Segmented Piezoresistive Sensors
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Solution Overview
Problem
Existing motion detection systems, such as those using glove-type input devices with stretchable conductive ink or strain sensors, struggle to accurately determine the type of motion performed by a mounted body, leading to inaccuracies in motion recognition.
Innovation Solution
A motion detection system comprising a motion detection unit, a communication unit, and a motion determination unit, where the motion detection unit uses an expansion/contraction sensor with a wiring electrode part that changes resistance values based on the motion of the mounted body, allowing for accurate detection and transmission of motion information to a server for determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion detection members (such as stretchable conductive ink or strain sensors) are used to detect finger joint motion, then it is possible to detect that the finger joint moves, but it is not possible to accurately detect what kind of motion the mounted body has performed
Solution Approach 1:
The motion detection member is divided into multiple detection regions, each corresponding to a specific body part or motion type. By segmenting the detection areas and assigning different functions to each segment, the system can identify not only that motion occurred but also what kind of motion it was, thereby resolving the information loss problem.
2Measurement precision
If conventional motion detection members are used, then the system structure is relatively simple, but the motion recognition accuracy is insufficient
Solution Approach 1:
The patent introduces a new dimension of detection by adding multiple detection regions with different detection directions and types. This multi-dimensional detection approach enables accurate motion recognition without significantly increasing overall system complexity, as each region operates independently with its own simple sensor structure.
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 accurate detection and classification of motions performed by the mounted body, improving detection accuracy and comfort by eliminating the need for calibration and reducing positional deviation errors.
Implementation Method 1
a wiring electrode part provided with: a wiring part provided to at least a portion of the expanding/contraction part, the wiring part having a first wiring part including a conductive linear body and a second wiring part including a conductive linear body
Data Source
AI summary
A communication unit transmits, to a server, motion information that is detected by a motion detection unit for detecting motion information about a mounted body by using a motion detection member mounted on the mounted body, and a motion determination unit determines what kind of motion is indicated by the motion information.