RC Oscillator Analyte Detection via Frequency Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current bio sensors for monitoring adult-onset diseases like diabetes, hyperlipidemia, and thrombosis are invasive and painful, and non-invasive methods using LED-PD technology have low accuracy due to environmental and foreign substance interference.
Innovation Solution
A method and system utilizing a resistor-capacitor (RC) oscillator with a resister-bank (R-bank) to generate various resonant frequencies, incorporating changes in capacitance and permittivity to detect analyte concentrations, and compensating for temperature and activity effects using a sensor unit and processing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If invasive sensor methods are used to measure blood glucose, then measurement accuracy is improved, but user comfort and ease of operation deteriorate due to finger pricking and pain
Solution Approach 1:
The patent replaces the mechanical invasive sensing method (finger pricking with needle) with a non-invasive optical detection system using LED and photodetector that measures glucose through light absorption properties of interstitial fluid, eliminating physical pain while maintaining measurement capability
Solution Approach 2:
The patent uses an intermediary substance (test liquid collected from skin surface or interstitial fluid) as a mediator between the user's body and the measurement system, allowing glucose measurement without direct invasive contact with blood vessels
2Ease of operation
If non-invasive LED-PD method is used to measure glucose, then ease of operation is improved, but measurement precision deteriorates due to environmental elements and foreign substances interference
Solution Approach 1:
The patent segments the measurement process into multiple wavelength channels (different LED wavelengths) and performs differential analysis between them, allowing separation of glucose signal from interference signals caused by environmental elements and foreign substances
Solution Approach 2:
The patent changes the operational parameters by using multiple wavelengths instead of a single wavelength, enabling the system to distinguish between glucose concentration changes and interference from environmental factors through spectral analysis
3Device complexity
If single frequency resonant oscillation is used, then device complexity is reduced, but measurement precision deteriorates due to inability to compensate for environmental variations
Solution Approach 1:
The patent makes the oscillator frequency dynamic by allowing it to resonate at multiple frequencies rather than a fixed single frequency, enabling the system to select optimal frequencies for different measurement conditions and compensate for environmental variations
Solution Approach 2:
The patent gives the oscillator multi-functionality by enabling it to operate at multiple resonant frequencies, allowing a single device to perform both simple resonance detection and complex environmental compensation functions
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
This approach provides more accurate analyte concentration data by generating multiple resonant frequencies based on R-bank selected values, improving detection accuracy and reducing user discomfort.
Implementation Method 1
generate various resonant frequencies by changing a resistance value of a resistor-capacitor (RC) oscillator
Implementation Method 2
resistor-capacitor (RC) oscillator
Implementation Method 3
measuring a change in each of the various resonant frequencies generated by the RC oscillator based on a change in capacitance attributable to a change in an analyte within a region of the fringing field
Implementation Method 4
generating a fringing field
Implementation Method 5
the change in capacitance may be measured based on a change in permittivity by using a material under test (MUT) unit including a material having a dielectric constant
Data Source
AI summary
Disclosed are a method and system for detecting a concentration of an analyte based on an oscillator having a selective frequency characteristic. The method may include generating a fringing field, generating various resonant frequencies by changing a resistance value of a resistor-capacitor (RC) oscillator, measuring a change in each of the various resonant frequencies generated by the RC oscillator based on a change in capacitance attributable to a change in an analyte within a region of the fringing field, and measuring a change characteristic of the analyte within the fringing field based on the change in each of the various resonant frequencies.