Physiological Signal Measuring Device with Electrostatic Discharge and Noise Cancellation
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Solution Overview
Problem
Physiological signal measuring devices face challenges with static electricity and dynamic noise interference, which affect the accuracy of measurements, especially when used through clothing.
Innovation Solution
The coupled physiological signal measuring device incorporates measuring electrodes, a signal processing unit with discharge control for static electricity, and active noise cancellation using a machine learning model to mitigate these interferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physiological signal measurement is performed through clothing, then convenience of use is improved, but measurement precision deteriorates due to static electricity and dynamic noise interference
Solution Approach 1:
The patent extracts and removes harmful static electricity and dynamic noise components from the measured signal through dedicated discharge circuits and noise cancellation processing, separating the useful physiological signal from interfering elements while maintaining through-clothing measurement capability
Solution Approach 2:
The patent introduces intermediate processing components including discharge control elements, multiplex feedback circuit units, and active noise cancellation elements that mediate between the noisy measured signal and the final physiological signal output, improving measurement accuracy without compromising convenience
2Measurement precision
If static electricity discharge and noise cancellation processing are added, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions (signal measurement, static electricity discharge, and noise cancellation) into an integrated measuring device with unified control, reducing overall system complexity compared to separate independent systems while maintaining all necessary precision-improving features
3Object-affected harmful factors
If discharge control and multiplex feedback circuit units are implemented, then harmful factors are reduced, but device complexity increases
Solution Approach 1:
The patent implements preliminary discharge control that detects and removes static electricity surges before they significantly degrade the physiological signal, and uses preliminary noise extraction to prepare clean signal data for subsequent processing, reducing the burden on later stages
Solution Approach 2:
The patent employs multiplex feedback circuit units that continuously monitor the measured signal quality and dynamically adjust discharge and noise cancellation parameters in real-time, optimizing performance while adapting to varying interference conditions without requiring overly complex fixed architectures
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 effectively discharges static electricity and cancels dynamic noise, ensuring accurate interpretation of physiological signals by reducing electrostatic surges and noise interference.
Implementation Method 1
If an electrostatic surge of the real-time physiological signal meets a condition, a discharge control signal is outputted. The multiplex feedback circuit unit is used to discharge the measuring electrodes according to the discharge control signal.
Implementation Method 2
The active noise cancellation element is used to perform active noise cancellation on the real-time physiological signal to obtain a real-time denoised physiological signal according to a noise extraction data set. The noise extraction data set is obtained through a machine learning model.
Data Source
AI summary
A coupled physiological signal measuring device is provided. The coupled physiological signal measuring device includes at least two measuring electrodes, a signal processing unit and a multiplex feedback circuit unit. The measuring electrodes are used to obtain a real-time physiological signal through measurement. The signal processing unit includes a discharge control element. If an electrostatic surge of the real-time physiological signal meets a condition, a discharge control signal is outputted. The multiplex feedback circuit unit is used to discharge the measuring electrodes according to the discharge control signal.