Bioimpedance Vitamin D Measurement Using Multi-Frequency Sensing
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Solution Overview
Problem
Existing devices for measuring vitamin D levels in the body are inconvenient, costly, and inaccurate due to not considering various factors.
Innovation Solution
An electronic apparatus that measures vitamin D concentration based on impedance and biometric information, using electrodes to apply current, a frequency controller to adjust current frequency, and a processor to calculate vitamin D levels based on stored correlations and biometric data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If serum measurement method is used to measure vitamin D level, then measurement accuracy is improved, but invasiveness and cost increase
Solution Approach 1:
The patent replaces the mechanical/chemical serum measurement system with an electrical impedance-based measurement system. The electrode sensor applies current to the body and measures impedance, which correlates with vitamin D levels, eliminating the need for invasive blood draws and expensive laboratory analysis while providing non-invasive, cost-effective measurement
Solution Approach 2:
The patent changes the measurement parameter from direct chemical analysis of serum to electrical impedance measurement. By measuring impedance at multiple frequencies and correlating it with vitamin D levels through machine learning models, the system achieves accurate measurement without the limitations of traditional serum methods
2Ease of operation
If impedance-based device is used to measure vitamin D level, then ease of operation is improved, but measurement accuracy deteriorates due to not considering various factors
Solution Approach 1:
The patent segments the impedance measurement into multiple frequency components (different current frequencies). By measuring impedance at multiple frequencies separately and processing each frequency's data through the correlation model, the system captures different tissue responses and achieves more accurate vitamin D level estimation
Solution Approach 2:
The patent incorporates biometric information as feedback to refine the vitamin D level calculation. The processor uses the measured impedance values along with additional biometric data, applying the correlation between impedance and vitamin D concentration to iteratively improve measurement accuracy and compensate for individual variations
3Device complexity
If single frequency current is used in impedance measurement, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent employs periodic action by sequentially applying current at multiple different frequencies. The frequency controller cycles through various frequency values, measuring impedance at each frequency point, and uses the compiled multi-frequency data to improve vitamin D level measurement accuracy through the stored correlation model
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
Accurately measures vitamin D levels with improved precision by using characteristic frequencies and biometric parameters, providing a nutrition guide based on the measured levels.
Implementation Method 1
an electrode sensor configured to apply a current to an object and configured to measure an impedance of the object
Data Source
AI summary
Disclosed herein is an electronic apparatus. The electronic apparatus includes an electrode sensor configured to apply a current to an object and configured to measure an impedance of the object, a frequency controller configured to adjust a frequency of the applied current, a memory storing a correlation between an impedance and a vitamin D concentration for each frequency, and a processor configured to obtain the impedance of the object corresponding to the frequency, and to calculate a vitamin D concentration of the object based on the impedance and the correlation.