Smart Ring Optical Sensor Alignment for Finger Size Changes
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Solution Overview
Problem
Smart finger rings face challenges such as finger circumference changes causing measurement errors due to gaps between optical sensors and unintentional rotation leading to sensor misalignment, which affect biometric parameter accuracy.
Innovation Solution
Innovative designs incorporating compressible, expandable, and adjustable-size components, along with movable optical elements to maintain consistent contact and alignment with the finger, ensuring accurate biometric measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed-size ring structure is used, then the device structure is simple, but measurement accuracy deteriorates due to finger circumference changes causing gaps between optical sensors
Solution Approach 1:
The patent applies the dynamics principle by implementing an adjustable ring size mechanism that allows the ring to adapt to different finger circumferences. The ring includes multiple sizes or an adjustable structure that enables dynamic reconfiguration to eliminate gaps between optical sensors and the finger surface, thereby maintaining measurement accuracy without requiring overly complex structures.
Solution Approach 2:
The patent utilizes parameter changes by modifying the ring's dimensional parameters (size, circumference) to match the user's finger measurements. This allows the optical sensors to maintain consistent contact and alignment with the finger, ensuring accurate biometric readings while keeping the overall design relatively simple through standardized size adjustments.
2Measurement precision
If a fixed-position optical sensor is used, then the device structure is simple, but measurement accuracy deteriorates due to unintentional rotation causing sensor misalignment
Solution Approach 1:
The patent applies the dynamics principle by implementing a movable optical sensor that can dynamically adjust its position along the ring's circumference. This allows the sensor to maintain proper alignment with the finger even when the ring rotates unintentionally, preserving measurement accuracy without requiring complex active correction mechanisms.
Solution Approach 2:
The patent utilizes self-service by designing the optical sensor to automatically reposition itself or self-adjust to maintain optimal measurement alignment. The sensor can detect misalignment and autonomously correct its position, eliminating the need for complex external control systems while ensuring continuous measurement accuracy.
3Adaptability or versatility
If the ring size is made adjustable, then adaptability to finger size changes is improved, but device complexity increases
Solution Approach 1:
The patent applies the segmentation principle by dividing the ring into multiple discrete size segments or adjustable sections. This allows the ring to be configured in different sizes through simple mechanical adjustments rather than requiring a completely complex continuous adjustment mechanism, balancing adaptability with structural simplicity.
Solution Approach 2:
The patent utilizes the nesting principle by implementing a telescoping or nested structure where ring segments can be extended or retracted to adjust the overall circumference. This allows for size adjustment through compact, space-efficient mechanisms that minimize added complexity while providing the necessary adaptability to different finger sizes.
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 designs address measurement errors by adapting to finger size changes and preventing sensor misalignment, thereby enhancing the reliability and accuracy of biometric data collection.
Implementation Method 1
Light from the light emitters is received by the light receivers after the light has been reflected by and/or transmitted through the person's finger. Biometric information is obtained by analyzing changes in the light caused by interaction between the light and the person's finger.
Implementation Method 2
Innovative designs incorporating compressible, expandable, and adjustable-size components, along with movable optical elements to maintain consistent contact and alignment with the finger
Data Source
AI summary
Disclosed herein are smart finger rings with light emitters and light receivers which collect biometric information concerning a person's health. Light from light emitters is received by light receivers after the light has been reflected by and/or transmitted through the person's finger. Several designs disclosed herein address the problem of size variation via innovative compressible, expandable, and/or adjustable-size components. Several designs disclosed herein address the problem of unintentional ring rotation via innovative movable components which change the circumferential locations and/or angles at which light beams from light emitters exit the ring toward a person's finger.