Wearable Ring Sensor Structure for Consistent Finger Signal Sensing
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Solution Overview
Problem
Wearable ring devices face challenges in maintaining consistent signal quality and sensitivity due to varying finger thicknesses among users, leading to increased design complexity and costs.
Innovation Solution
A ring-type wearable device comprising an outer and inner ring member, where the inner member is detachable and adjustable to fit different finger sizes, with sensors and light-emitting parts that adapt to thickness variations, ensuring constant sensitivity and signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the ring-type wearable device is divided into several sizes according to finger thickness, then the device can fit different finger sizes, but the design complexity and manufacturing cost are considerably increased
Solution Approach 1:
The ring-type wearable device is divided into an outer ring member and a detachable inner ring member. The inner ring member can be separated and replaced to accommodate different finger sizes, allowing the device to be customized for individual users without redesigning the entire device structure.
Solution Approach 2:
The inner ring member is designed to be detachable and replaceable, enabling dynamic adjustment of the device size. Users can swap inner ring members with different thicknesses to match their finger dimensions, providing adaptability without permanent structural changes.
2Adaptability or versatility
If the ring-type wearable device is divided into several sizes according to finger thickness, then the device can fit different finger sizes, but the manufacturing cost is considerably increased
Solution Approach 1:
By segmenting the device into outer and inner ring members, the manufacturing process can be standardized for each component. Multiple inner ring members can be produced using the same manufacturing process and then differentiated by thickness, reducing overall manufacturing costs compared to creating entirely different device versions.
Solution Approach 2:
The outer ring member serves as a universal component that can accommodate multiple inner ring members of different thicknesses. This multi-functionality allows a single outer ring design to serve multiple size requirements, reducing the need for multiple specialized manufacturing lines.
3Adaptability or versatility
If the positions of skin detection sensors are controlled according to corresponding sizes of the ring-type wearable device, then the sensor positioning adapts to different sizes, but it is difficult to constantly maintain a distance between the skin and the sensor
Solution Approach 1:
The inner ring member is designed with specific local characteristics, including its thickness and the positioning of sensor openings. By controlling the local quality of the inner ring member, the sensor positions are automatically optimized for each specific size configuration, ensuring consistent distance between the skin detection sensors and the user's skin.
4Adaptability or versatility
If different sizes of ring-type wearable devices are manufactured, then various finger thicknesses can be accommodated, but the uniform quality of measured signals cannot be guaranteed
Solution Approach 1:
The inner ring member is designed with specific local characteristics, including its thickness and the positioning of sensor openings. By controlling the local quality of the inner ring member, the sensor positions are automatically optimized for each specific size configuration, ensuring consistent distance between the skin detection sensors and the user's skin.
Solution Approach 2:
The detachable inner ring member system provides a feedback mechanism where the physical dimensions of the inner ring member directly determine the sensor-to-skin distance. This passive feedback ensures that each size configuration automatically achieves the optimal sensing distance without requiring active adjustment or calibration.
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 maintains consistent sensitivity and signal quality across varying finger thicknesses, reducing design complexity and costs while enabling effective biological signal detection and analysis.
Implementation Method 1
a light-emitting part and a light-receiving part configured to receive light emitted from the light-emitting part
Implementation Method 2
receive light emitted from the light-emitting part and reflected from an inside of a finger
Implementation Method 3
The inner ring member may include a lens configured to control a light radiation distance of the light-emitting part
Implementation Method 4
a sensor unit disposed in the outer ring member... The sensor unit may be a photo sensor
Data Source
AI summary
A ring-type wearable device is disclosed. The disclosed ring-type wearable device comprises: an outer ring member; an inner ring member separably inserted into the outer ring member; a sensor unit disposed in the outer ring member; and a control unit disposed in the outer ring member so as to be electrically connected to the sensor unit, wherein the sensor unit can maintain constant sensitivity in correspondence to the thickness of the inner ring member.