Charging-Time Optical Sensor Calibration for Antioxidant Estimation
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Solution Overview
Problem
Existing technologies lack an efficient and user-friendly method for non-invasively estimating antioxidant levels in the body, which are crucial for maintaining health and preventing diseases associated with excessive reactive oxygen species.
Innovation Solution
An electronic device equipped with an optical sensor that performs calibration using a reference object during charging, guides the user through a display for proper contact and pressure, and calculates absorbances at different wavelengths to estimate antioxidant levels based on a predefined model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the optical sensor performs calibration using a reference object during charging, then the measurement precision of antioxidant levels is improved, but the device complexity increases due to additional calibration procedures and reference object requirements
Solution Approach 1:
The patent performs calibration using a reference object during the charging state, before actual measurement begins. This preliminary action ensures that the optical sensor is pre-calibrated with known reflectance values, improving measurement precision without requiring separate calibration sessions from users.
Solution Approach 2:
The system automatically performs calibration during charging without requiring manual user intervention. The processor autonomously controls the optical sensor to measure the reference object and stores the calibration data, making the complex calibration process transparent and user-friendly.
2Ease of operation
If the system provides visual and auditory feedback to guide users on proper contact and pressure, then the ease of operation is improved, but the device complexity increases due to additional feedback mechanisms and control logic
Solution Approach 1:
The patent implements real-time feedback through the display device that monitors and guides users on proper finger contact and pressure application. The system provides visual cues to ensure correct measurement conditions, improving ease of operation while maintaining reliable antioxidant level estimation.
3Measurement precision
If the processor calculates absorbances at multiple wavelengths and uses a predefined model for estimation, then the measurement precision is improved, but the loss of time increases due to complex calculations and multiple measurement steps
Solution Approach 1:
The system pre-stores calibration data and measurement models in memory before actual measurement occurs. During measurement, the processor rapidly retrieves and applies these pre-prepared data structures, reducing calculation time while maintaining high estimation precision through multi-wavelength absorbance analysis.
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
Enables accurate and user-friendly estimation of antioxidant levels by providing visual and auditory feedback, ensuring proper sensor contact and pressure, and delivering reliable bio-information results.
Implementation Method 1
a spectroscope configured to emit a first light to a reference material of a charger, measure an intensity of the first light reflected from the reference material
Implementation Method 2
emit a second light to a skin of a user, and measure an intensity of the second light reflected from the skin of the user
Implementation Method 3
determine absorbance of the skin of the user based on the intensity of the first light and the intensity of the second light
Data Source
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AI summary
An electronic device may include: an optical sensor configured to emit a reference light to a reference object and detect the reference light reflected from the reference object during calibration, and emit a measurement light to a target object and detect the measurement light reflected from the target object during a measurement; a display; and a processor configured to: when the electronic device is placed on a charger and is in a charging state, perform the calibration of the optical sensor based on the reference light reflected from the reference object; control the display to output guide information for estimating bio-information according to progress stages of the measurement after charging of the electronic device; and estimate the bio-information based on a light quantity of the measurement light that is reflected from the target object, and a light quantity of the reference light reflected from the reference object.