Smart Ring Sensor Protrusion for Stable Optical Signal Collection
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Solution Overview
Problem
Wearable electronic devices face challenges in precisely collecting sensor signals due to variations in user body characteristics, such as finger shape and skin elasticity, leading to noise interference and reduced signal quality.
Innovation Solution
A smart ring device with a protruding structure that houses both light emitting and receiving elements, minimizing air gaps for improved signal transmission and reception by ensuring direct contact with the user's finger, thereby reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is disposed to face the user's body in a conventional wearable device, then the device can collect sensor signals, but air gaps form between the sensor and the body surface leading to noise interference and reduced signal quality
Solution Approach 1:
The patent transitions from a planar sensor arrangement to a three-dimensional protruding structure that extends toward the body surface. The protrusion creates multiple contact points at different spatial positions, eliminating air gaps by establishing direct physical contact between the sensor and the body in the vertical dimension, thereby improving signal quality and reducing noise interference.
Solution Approach 2:
The protruding structure is pre-configured to make contact with the body surface before signal acquisition begins. This preliminary contact ensures that the sensor is already in optimal position and eliminates the need for real-time adjustment during measurement, maintaining consistent signal quality throughout the measurement process.
2Volume of moving object
If the wearable device is miniaturized to fit on the body, then the device can be worn comfortably, but the sensor collection precision is reduced due to space constraints
Solution Approach 1:
The patent utilizes the vertical dimension by creating protrusions that extend toward the body surface, allowing the sensor to achieve optimal contact distance without increasing the overall device volume. This three-dimensional approach enables precise signal collection within the constrained space of a miniaturized wearable device.
Solution Approach 2:
The protruding sensor structure is nested within the body of the wearable device, with the sensor element extending outward from the device housing. This nested configuration allows the sensor to reach the optimal measurement position while remaining contained within the compact device form factor, maintaining both miniaturization and measurement precision.
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
Enhances signal collection by eliminating air gaps for precise and stable contact with the user's finger, resulting in improved signal quality and reduced noise interference.
Implementation Method 1
a first light emitting element including light emitting circuitry disposed at a second position of the outer ring, and configured to transmit a first signal of a first frequency band
Data Source
AI summary
Disclosed is a smart ring device including: a sensor, an outer ring, an inner ring disposed inside the outer ring, a printed circuit board disposed between the outer ring and the inner ring, and a first protrusion protruding from one surface of an inner part of the inner ring in a central direction of the smart ring device, the printed circuit board may include a first light receiving element disposed in a first position of the outer ring, and a first light emitting element disposed at a second position of the outer ring, and configured to transmit a first signal of a first frequency band, wherein the first protrusion may include a first part protruding from the first light emitting element in a first direction facing the center of the smart ring device, and a second part connected to the first part, and protruding from the first light receiving element in a second direction facing the center of the smart ring device.