Biosensor Array Antenna Frequency Sweeping Glucose Detection
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Solution Overview
Problem
Current biosensors face challenges in accurately and efficiently measuring biometric information, particularly glucose levels, due to limitations in detecting target parts like blood vessels within the body with minimal power and time delay, and ensuring data diversity and alignment with internal sensors.
Innovation Solution
A biosensor using an array antenna system with at least two antenna elements that radiate and receive electromagnetic waves, employing frequency and phase sweeping to detect target parts, determine location, and estimate glucose levels with improved directivity and accuracy by operating in both single and array modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electromagnetic waves are radiated to detect target parts inside the body, then measurement capability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic frequency sweeping to detect target parts. The controller sweeps through a frequency range (e.g., 2.4 GHz) periodically to identify resonant frequencies that indicate the presence and location of target parts such as blood vessels. This periodic action allows detection to be performed only when necessary, reducing overall power consumption while maintaining measurement capability.
Solution Approach 2:
The patent dynamically adjusts the radiation pattern and frequency of electromagnetic waves based on real-time detection needs. The array antenna elements can change their radiation characteristics dynamically to focus energy only when and where target detection is required, rather than continuous omnidirectional radiation, thereby reducing power consumption while maintaining detection accuracy.
2Measurement precision
If array antenna mode is used to improve directivity and accuracy, then measurement accuracy is improved, but operation time increases
Solution Approach 1:
The patent implements periodic frequency sweeping to detect target parts. The controller sweeps through a frequency range (e.g., 2.4 GHz) periodically to identify resonant frequencies that indicate the presence and location of target parts such as blood vessels. This periodic action allows detection to be performed only when necessary, reducing overall power consumption while maintaining measurement capability.
Solution Approach 2:
The patent dynamically adjusts the radiation pattern and frequency of electromagnetic waves based on real-time detection needs. The array antenna elements can change their radiation characteristics dynamically to focus energy only when and where target detection is required, rather than continuous omnidirectional radiation, thereby reducing power consumption while maintaining detection accuracy.
3Measurement precision
If frequency and phase sweeping is performed to detect target location, then detection accuracy is improved, but time delay increases
Solution Approach 1:
The patent performs preliminary detection using a single antenna element in a first time period to quickly identify potential target locations. Based on this preliminary information, the system then focuses array antenna operations only on relevant frequency ranges and directions in subsequent time periods, reducing the overall time delay while maintaining detection accuracy.
Solution Approach 2:
The patent divides the detection process into segmented time periods: a first time period for single-element preliminary detection and a second time period for array-based detailed detection. This segmentation allows the system to perform comprehensive frequency and phase sweeping only when and where necessary, reducing overall time delay while maintaining detection accuracy through targeted 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
The biosensor achieves accurate and efficient glucose level measurement with minimal time delay and improved accuracy by utilizing electromagnetic waves with enhanced directivity, ensuring data diversity and alignment with internal sensors, thereby providing precise biometric information.
Implementation Method 1
at least two antenna elements that are spaced apart from each other along the lateral circumference of an object, radiate electromagnetic waves having a directivity toward the inside of the object
Implementation Method 2
receive a scattered electromagnetic field
Implementation Method 3
a phase shifter for adjusting the phase of the feed signal and transmitting the feed signal to the at least two antenna elements
Implementation Method 4
The controller may obtain a frequency response characteristic for the scattered electromagnetic field, calculate a time delay profile from the frequency response characteristic, and determine the location of the target part based on the time delay profile
Data Source
AI summary
A biosensor using an array antenna includes: at least two antenna elements that are spaced apart from each other along the lateral circumference of an object, radiate electromagnetic waves having a directivity toward the inside of the object, and receive a scattered electromagnetic field; a signal generator for generating a feed signal with a frequency sweep; a phase shifter for adjusting the phase of the feed signal and transmitting the feed signal to the at least two antenna elements; and a controller for detecting the location of a target part inside the object based on the scattered electromagnetic field received in response to the radiated electromagnetic waves by sweeping the frequency and phase of the feed signal.