Wearable Device Binding Member Dynamics for Biometric Sensor Contact

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Solution Overview

Problem

Wearable electronic devices face challenges in providing a comfortable wearing experience while ensuring precise detection of biometric signals, as existing designs often fail to maintain close contact with the user's body effectively.

Innovation Solution

A wearable electronic device with a wearing unit that includes a first wearing member, a binding member, and a driving member, where the binding member is moved longitudinally to reduce the length of the wearing unit, allowing the biometric signal sensor to come into close contact with the body, using a wire made of artificial muscle, shape memory alloy, or EAP that contracts upon an electric signal, and an intermediate member that increases the displacement of the binding member for enhanced contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the wearing unit is made loose to provide comfort, then wearing comfort is improved, but the biometric signal sensor cannot maintain close contact with the user's body

Engineering Contradiction:

Improvewearing comfortVSAvoidbiometric signal detection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The wearing unit incorporates a binding member that can dynamically adjust its length through a driving member, allowing the system to transition between a loose state for comfort and a tightened state for accurate biometric detection. This dynamic adjustment mechanism enables the wearing unit to adapt to different operational requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The binding member's length parameter is made variable through the driving member mechanism. By changing the length parameter of the binding member between extended and contracted states, the system achieves both comfortable wearing and secure sensor contact conditions as needed.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If the binding member is tightened to ensure sensor contact, then biometric signal detection accuracy is improved, but wearing comfort deteriorates

Engineering Contradiction:

Improvebiometric signal detection accuracyVSAvoidwearing comfort

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The system uses a controllable driving member to dynamically adjust the binding member's tension. This allows the wearing unit to be tightened only when biometric detection is required, and relaxed during normal wear, optimizing both detection accuracy and comfort at different times.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The driving member operates periodically or on-demand to adjust the binding member's length, tightening the wearing unit when sensor contact is needed and loosening it during normal wear, thereby achieving periodic optimization of both detection accuracy and comfort.

Inventive Principle:

Principle #19Periodic action

3Stress or pressure

If the binding member has large displacement for enhanced contact, then sensor contact pressure is improved, but the complexity of the driving mechanism increases

Engineering Contradiction:

Improvesensor contact pressureVSAvoiddriving mechanism complexity

Core Design Contradiction:

Stress or pressureVSDevice complexity

Solution Approach 1:

An intermediate member is introduced as a mediator between the driving member and the binding member. This intermediate member amplifies the small displacement from the driving member into a larger displacement of the binding member, achieving enhanced sensor contact pressure while keeping the driving mechanism relatively simple.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs an artificial muscle wire as the driving member, which replaces complex mechanical actuation systems. This artificial muscle can achieve large displacement and force generation through simple electrical stimulation, reducing overall mechanism complexity while providing sufficient contact pressure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 device provides a comfortable wearing experience while ensuring precise detection of biometric signals by securely positioning the sensor against the user's body, allowing for accurate monitoring of health parameters such as blood pressure, heart rate, and oxygen saturation.

Implementation Method 1

a wire made of artificial muscle, shape memory alloy, or EAP that contracts upon an electric signal

Methodology Applied

Scientific EffectArtificial muscle contraction: Electroactive Polymer

Implementation Method 2

a wire made of artificial muscle, shape memory alloy, or EAP that contracts upon an electric signal

Methodology Applied

Scientific EffectShape memory alloy effect: Shape Memory Alloy

Implementation Method 3

a wire made of artificial muscle, shape memory alloy, or EAP that contracts upon an electric signal

Methodology Applied

Scientific EffectElectroactive polymer contraction: Electroactive Polymer

Data Source

PatentUS11622455B2Wearable electronic device

Publication Date: 2023.04.04 SAMSUNG ELECTRONICS CO LTD

AI summary

A wearable electronic device is provided. The wearable electronic device includes a main body and a wearing unit that allows the main body to be worn on a user's body. The wearing unit may include a first wearing member extending from the main body, a binding member coupled to the first wearing member to be moved in a longitudinal direction of the first wearing member, and a driving member installed in the first wearing member to move the binding member.