Hinged Wearable Sensor Unit for Consistent Vibration Detection
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Solution Overview
Problem
Wearable sensing devices face variations in sensing accuracy due to differences in user hand size, affecting the contact between vibration detectors and the user's hand, leading to inconsistent vibration detection.
Innovation Solution
A wearable sensing device design featuring a sensor unit with bracket parts and hinge components attached to clothing, ensuring consistent contact and vibration detection across various hand sizes, using snap buttons or other detachable connections for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a vibration detector is provided on one glove worn by a worker, then vibration detection is achieved, but detection accuracy varies depending on worker hand size
Solution Approach 1:
The sensor unit incorporates hinge parts that enable dynamic adjustment of the sensor's position and contact pressure. The hinge mechanism allows the sensor to adapt to different hand sizes by adjusting the angle between the bracket part and sensor housing, maintaining optimal contact between the vibration detector and the wearer's hand regardless of hand size variations.
Solution Approach 2:
The invention changes the geometric parameters of the sensor unit structure, specifically the angle formed by the hinge parts and bracket parts, to adapt to different hand sizes. By adjusting this angle parameter, the sensor maintains consistent contact pressure and positioning on hands of varying dimensions, thereby preserving detection accuracy across different users.
2Reliability
If the sensor unit is fixed to the clothing, then stable vibration detection is achieved, but ease of attachment and detachment is reduced
Solution Approach 1:
The sensor unit is designed as a separate, detachable module that can be independently attached to and removed from the clothing. This segmentation allows the sensor unit to be easily attached or detached without requiring removal of the entire glove or clothing item, maintaining both stability during use and ease of operation during attachment/detachment.
Solution Approach 2:
The bracket parts are pre-formed with attachment structures (such as snap-fit mechanisms or magnetic elements) that enable quick connection to corresponding features on the clothing. This preliminary preparation of attachment interfaces allows for rapid and tool-free attachment and detachment while ensuring stable positioning once attached.
Data Source
AI summary
A wearable sensing device includes clothing worn by a user, and a sensor unit including a sensor and being attached to the clothing. The sensor unit includes: a body; first and second bracket parts provided to sandwich the body and fixed to the clothing; and first and second hinge parts respectively coupling the body and first and second bracket parts. The first and second bracket parts of the sensor unit are respectively attached to first and second sensor attachment parts provided on clothing 22L.