Biosignal Processing Apparatus Voltage Current Mode Switching
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Solution Overview
Problem
Existing biosignal processing devices are bulky due to the need for separate circuits to preprocess various biosignals like ECG, EMG, and PPG, which require different electrical physical quantities, leading to a large device size.
Innovation Solution
A biosignal processing apparatus with a signal receiver and processor that can receive and process biosignals using either a voltage inputter or a current inputter, based on the electrical physical quantity, allowing for switching between voltage and current measuring modes, and including a chopper to modulate frequency components and control connections, enabling compact processing of diverse biosignals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate circuits are used to preprocess each biosignal (ECG, EMG, PPG), then each biosignal can be processed with appropriate electrical physical quantity, but the device size becomes relatively large
Solution Approach 1:
The patent implements a universal biosignal processing apparatus that can handle multiple types of biosignals (ECG, EMG, PPG) through a single integrated system. The apparatus includes a multiplexer that selectively connects different biosignal sources to a shared signal processor, and a switch that dynamically configures the electrical physical quantity (voltage or current input) based on the detected biosignal type. This multi-functional design eliminates the need for separate dedicated circuits for each biosignal type, thereby reducing device size while maintaining comprehensive biosignal processing capability.
2Volume of moving object
If a single processor handles multiple biosignals with different electrical physical quantities, then device size is reduced, but the complexity of switching between voltage and current modes increases
Solution Approach 1:
The patent applies preliminary action by detecting the type of biosignal before processing and pre-configuring the appropriate electrical physical quantity mode. The apparatus includes a detector that identifies whether the incoming biosignal is voltage-type (e.g., ECG) or current-type (e.g., PPG), and based on this detection, the controller proactively switches the signal processor to the correct input mode before the actual signal processing begins. This preliminary configuration approach simplifies the switching control logic compared to trial-and-error or post-detection adjustment methods.
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
Enables the compact processing of multiple biosignals by switching between voltage and current modes, reducing device size while maintaining efficient signal processing, allowing for simultaneous measurement of various biosignals with different electrical physical quantities.
Implementation Method 1
a chopper configured to modulate a frequency component of an input current to the current inputter based on the control signal
Data Source
AI summary
A biosignal processing apparatus and method thereof include a signal receiver and a signal processor. The signal receiver is configured to receive a biosignal having a corresponding electrical physical quantity from a sensor. The signal processor includes a voltage inputter and a current inputter, and configured to process the biosignal using one of the voltage inputter and the current inputter and based on the corresponding electrical physical quantity of the biosignal.