Optical Skin Torsionometer for Accurate Elasticity Measurement
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Solution Overview
Problem
Existing methods lack effective and efficient means to measure the elasticity and tautness of skin, particularly for clinical and cosmetic applications.
Innovation Solution
A device comprising a torsionometer with a rotatable shaft and optical encoder, adhered to the skin via suction, measures skin elasticity by monitoring rotation and recoil speed, using sensors and processors to calculate Young's modulus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods are used to measure skin elasticity, then measurement can be performed, but the measurement accuracy and reliability are insufficient
Solution Approach 1:
The patent replaces traditional mechanical measurement systems with an optical measurement system. An optical encoder with light source and photodetector detects the rotational position and velocity of the torsionometer through non-contact optical means, significantly improving measurement precision and reliability while eliminating mechanical wear and friction errors.
Solution Approach 2:
The patent uses optical encoding to create a precise digital copy of the mechanical rotation. The optical encoder converts the physical rotational movement of the torsionometer into optical signals that are then converted into precise digital measurements of angular position and velocity, enabling accurate measurement of skin elasticity parameters.
2Measurement precision
If a torsionometer with optical encoder is used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the optical encoder, light source, photodetector, and processing electronics into an integrated measurement unit that attaches to the torsionometer. This consolidation improves measurement precision while managing device complexity through functional integration rather than separate components.
Solution Approach 2:
The optical encoder system serves multiple functions: it measures angular position, calculates rotational velocity, and provides feedback for real-time measurement monitoring. This multi-functionality justifies the added complexity by delivering comprehensive measurement capabilities from a single integrated system.
3Stability of the object's composition
If vacuum suction is used to adhere the torsionometer to skin, then measurement stability is improved, but additional components are required
Solution Approach 1:
The patent uses vacuum suction (pneumatic principle) to adhere the torsionometer to the skin surface. A vacuum pump creates negative pressure that holds the measurement device firmly against the skin, while a vacuum gauge monitors the suction level to ensure stable attachment throughout the measurement process.
Solution Approach 2:
The vacuum gauge provides real-time feedback on the suction level, allowing the system to monitor and maintain stable attachment. This feedback mechanism ensures the torsionometer remains firmly attached to the skin during measurement while allowing for adjustments if the vacuum level changes.
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
Provides accurate measurements of skin elasticity and tautness, enabling assessment of skin health and the effectiveness of skincare products.
Implementation Method 1
The sensor may be selected from optical sensors, cameras, video cameras, smart phones, optical encoders, and the like and combinations thereof, and in certain embodiments, the sensor may be an optical encoder
Implementation Method 2
the device may include a vacuum pump operably connected to the torsionometer and configured to adhere the torsionometer to the skin by suction
Implementation Method 3
measuring recoil speed associated with return of twisted skin to a natural position
Data Source
AI summary
Skin torsionometers, methods and systems for using such skin torsionometers, and systems including a skin torsionometer, computing device configured to capture images, and an application (app) for determining the tautness of skin are described herein.