Biometric Sensor Using Electromagnetic Wave Reflection
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Solution Overview
Problem
Existing methods for measuring biometric information, such as blood sugar levels, are invasive, painful, and prone to inaccuracies due to environmental factors and foreign substances.
Innovation Solution
A device and method that utilize an implant device to emit an electromagnetic wave and measure signals reflected from analytes, while a non-invasive measurement device corrects measurement data and monitors the operating state of the implant device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an invasive sensor is inserted into the skin to measure blood sugar, then measurement accuracy is improved, but user comfort deteriorates due to pain and invasion
Solution Approach 1:
The patent replaces the mechanical invasive sensor insertion method with an electromagnetic wave-based non-invasive measurement system. The measurement device emits electromagnetic waves that penetrate the skin to detect blood sugar levels, eliminating the need for physical tissue invasion and associated pain while maintaining measurement capability
Solution Approach 2:
The patent introduces electromagnetic waves as an intermediary medium to transfer measurement information through the skin without direct contact. The electromagnetic waves interact with the analyte in the blood and carry signal information through tissue, enabling non-invasive detection while maintaining measurement accuracy
2Object-affected harmful factors
If a non-invasive LED-photo diode method is used, then user comfort is improved, but measurement accuracy deteriorates due to environmental factors
Solution Approach 1:
The patent changes the measurement parameter from visible light (LED) to electromagnetic waves with specific frequencies that are more penetrating and less susceptible to environmental interference. This parameter change enables the system to ignore environmental factors like sweat and temperature while maintaining non-invasive operation
Solution Approach 2:
The patent incorporates a sensor state measurement mechanism that continuously monitors the condition of the measurement device and provides feedback to correct measurement data. This feedback loop compensates for environmental factors and maintains measurement accuracy throughout the measurement period
3Device complexity
If measurement is performed without considering sensor state, then device complexity is reduced, but measurement reliability deteriorates
Solution Approach 1:
The patent performs preliminary measurement of the sensor state before and during the actual analyte measurement. By pre-assessing the condition of the measurement device and continuously monitoring its state, the system can correct for potential errors before they affect measurement reliability, adding robustness without excessive complexity
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 allows for continuous, accurate, and pain-free measurement of biometric information, reducing the need for invasive blood collections and improving measurement reliability.
Implementation Method 1
an implant device configured to insert into a body of a subject to be analyzed to emit an electromagnetic wave of a specific frequency, and to measure a signal reflected from a surrounding analyte
Implementation Method 2
the non-invasive measurement device may be configured to measure a change in intensity of the field that changes according to a change in permittivity in the body of the subject to be analyzed
Data Source
AI summary
Disclosed is a device and method for measuring biometric information considering sensor condition measurement. A biometric information measurement device according to an example embodiment may include an implant device configured to insert into a body of a subject to be analyzed, to emit an electromagnetic wave of a specific frequency, and to measure a signal reflected from a surrounding analyte; and a non-invasive measurement device configured to measure a change in a field formed by the electromagnetic wave of the specific frequency outside the body of the subject to be analyzed.