Physiological Signal Electrode with Transient Voltage Suppression Multiplexer
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Solution Overview
Problem
Existing physiological signal measurement devices face interference from static electricity when in direct contact with the skin or through fabrics/casings of portable devices, affecting measurement accuracy.
Innovation Solution
A physiological signal measurement system with a double-layer structured electrode and integrated transient voltage suppression multiplex circuit, static electricity elimination circuit, and grounding component to detect and eliminate electrostatic surges, followed by signal compensation using a physiological signal analysis module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct contact with skin or measurement through fabric/casing is used, then measurement convenience is improved, but static electricity interference increases
Solution Approach 1:
The electrode is divided into multiple independent electrode elements arranged in an array, with each element capable of detecting static electricity surges independently. This segmentation allows the system to maintain direct skin contact for convenience while distributing the anti-static function across multiple elements.
Solution Approach 2:
A transient voltage suppression multiplexer circuit is introduced as an intermediary component between the electrode elements and the signal processing system. This circuit detects static electricity surges through the electrode elements and provides targeted suppression, resolving the contradiction between maintaining direct contact and preventing static interference.
2Reliability
If transient voltage suppression multiplexer circuit and static electricity elimination circuit are added, then static electricity elimination capability is improved, but device complexity increases
Solution Approach 1:
The transient voltage suppression multiplexer circuit integrates multiple functions into a single circuit block: it multiplexes signals from multiple electrode elements, detects static electricity surges, and activates suppression mechanisms. This merging reduces overall system complexity while maintaining comprehensive anti-static protection.
Solution Approach 2:
The transient voltage suppression multiplexer circuit serves multiple purposes simultaneously: signal multiplexing from array electrodes, static electricity detection, and surge suppression control. This multi-functionality eliminates the need for separate dedicated circuits for each function, reducing device complexity.
3Measurement precision
If array of static electricity receiving electrodes is used, then static electricity detection accuracy is improved, but electrode structure complexity increases
Solution Approach 1:
The electrode structure is segmented into multiple independent electrode elements arranged in a configurable array pattern. Each element independently detects static electricity surges, improving detection accuracy through spatial distribution while maintaining a relatively simple individual element structure.
Solution Approach 2:
The array configuration allows flexible adjustment of electrode parameters such as spacing, arrangement pattern, and number of elements. This enables optimization of static electricity detection accuracy for different application scenarios without fundamentally changing the basic electrode structure.
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 system effectively eliminates static electricity interference, ensuring accurate measurement and analysis of physiological signals by compensating for signal distortions caused by electrostatic surges.
Implementation Method 1
at least one transient voltage suppression multiplexer circuit, to eliminate a static-electricity surge of the first sensing signal and the second sensing signal
Implementation Method 2
a grounding component are used to eliminate the electrostatic surges
Data Source
AI summary
A physiological signal measurement system, a physiological signal measurement method and a physiological signal measurement electrode are provided. The physiological signal measurement system includes a first electrode, a second electrode, a plurality of first static electricity receiving electrodes, a plurality of second static electricity receiving electrodes, a transient voltage suppression multiplexer circuit, a signal processing sensor module and a physiological signal analysis module. The first static electricity receiving electrodes are arranged in an array on the first electrode. The second static electricity receiving electrodes are arranged in an array on the second electrode. The transient voltage suppression multiplexer circuit is connected to each of the first static electricity receiving electrodes and each of the second static electricity receiving electrodes. The signal processing sensor module obtains a differential signal according to a first sensing signal and a second sensing signal. The physiological signal analysis module compensates the differential signal.