ECG Electrode Configuration for High-Impedance Dry Skin
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Solution Overview
Problem
Existing electronic devices face challenges in accurately measuring electrocardiogram (ECG) waveforms due to dry skin conditions, which increase contact impedance and reduce waveform size, often requiring inconvenient skin moisturization for re-measurement.
Innovation Solution
An electronic device with a configurable electrocardiogram detection function that uses at least four electrodes to measure contact impedance, allowing for optimal electrode connections based on impedance values, reducing impedance by connecting electrodes in parallel, and enhancing ECG measurement accuracy even in dry skin conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ECG measurement is performed using fixed electrode positions, then device simplicity is maintained, but measurement accuracy deteriorates when skin is dry due to increased contact impedance
Solution Approach 1:
The patent implements dynamic electrode connection configuration where the system automatically selects and switches between different electrode connection modes (first mode with first two electrodes, second mode with last two electrodes, third mode with middle two electrodes) based on real-time contact impedance measurements. This dynamic adaptation allows the device to maintain measurement accuracy under varying skin conditions without requiring manual intervention or complex fixed configurations.
Solution Approach 2:
The system changes the electrical connection parameters by switching between different electrode pairings based on contact impedance values. When contact impedance exceeds a threshold, the system transitions from one electrode connection mode to another, effectively changing the measurement parameters to adapt to dry skin conditions and maintain accurate ECG waveform detection.
2Measurement precision
If contact impedance is reduced by connecting electrodes in parallel, then ECG measurement accuracy is improved, but device complexity increases due to configurable electrode connections
Solution Approach 1:
The system dynamically switches between different electrode connection modes based on real-time contact impedance measurements. The controller monitors contact impedance and automatically transitions between first, second, and third connection modes to maintain optimal measurement conditions, reducing the need for manual configuration and simplifying the user experience despite the configurable nature of the system.
Solution Approach 2:
The device performs self-configuration by automatically selecting appropriate electrode connection modes based on measured contact impedance values. The system monitors its own performance and autonomously adjusts the electrode connections without requiring user intervention, thereby maintaining measurement accuracy while keeping the operation simple for the end user.
3Measurement precision
If skin moisturization is required to reduce contact impedance, then measurement accuracy is improved, but ease of operation deteriorates due to additional preparation steps
Solution Approach 1:
The device automatically monitors contact impedance and performs self-adjustment by switching between different electrode connection modes. This self-service capability eliminates the need for users to manually moisturize their skin or reposition electrodes, as the system adapts to varying skin conditions autonomously, thereby maintaining measurement accuracy while preserving ease of operation.
Solution Approach 2:
The system changes measurement parameters by switching electrode connection modes in response to contact impedance variations caused by dry skin. This parameter change allows the device to maintain accurate measurements without requiring users to alter their skin condition or perform additional preparation steps, thus improving ease of operation while preserving measurement precision.
4Adaptability or versatility
If multiple electrode connection modes are implemented to handle dry skin, then adaptability is improved, but device complexity increases
Solution Approach 1:
The system implements dynamic switching between first, second, and third electrode connection modes based on real-time contact impedance measurements. The controller automatically selects the appropriate mode without requiring complex manual configuration, thereby achieving high adaptability to different skin conditions while keeping the device operation simple through automated decision-making.
Solution Approach 2:
The device performs automatic adaptation to varying skin conditions by monitoring contact impedance and autonomously switching between different electrode connection modes. This self-service adaptability eliminates the need for users to understand or configure multiple connection modes, achieving high versatility while maintaining simplicity in operation.
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 device improves ECG measurement accuracy and efficiency by configuring appropriate electrode connections, reducing contact impedance and ensuring accurate readings regardless of skin moisture levels.
Implementation Method 1
obtain contact impedance values from at least four electrodes respectively connected to designated connection points of a human body
Implementation Method 2
measure an electrocardiogram (ECG) of the human body based on signals received from the electrode module
Data Source
AI summary
An electronic device and method are disclosed herein. The electronic device includes a memory, an electrode module including at least four electrodes respectively connectable to a human body, and at least one processor. The processor implements the method, including: when the at least four electrodes are connected to designated connection points on the human body, obtain contact impedance values from the at least four electrodes, set electrode combination information for respectively connecting the at least four electrodes with the designated connection points, based on the obtained contact impedance values, and store the set electrode combination information in the memory, and measure an electrocardiogram (ECG) based on signals received from the electrode module while the at least four electrodes are respectively reconnected to the designated connection points, based on the stored electrode combination information.