Four-channel surface myoelectricity active concentric circle electrode and preparation method thereof

Abstract

The invention relates to a four-channel surface myoelectricity active concentric circle electrode and a preparation method thereof. The electrode is composed of an FPC flexible substrate, a concentriccircle electrode, a reference electrode and a power source conversion circuit, an active electrode is designed by adopting an instrument amplifier with extremely low current noise to prevent the introduction of the internal noise and electromagnetic noise from the very beginning, concentric circle spatial filtering can reduce myoelectricity crosstalk, the amplification of artifact interference isprevented by a front-end resistance-capacitance filtering network, contacting resistance is reduced by immersion gold treatment of the electrode, the durability of the electrode is improved, electromagnetic interference is further reduced by reasonable layout and large-scale copper pavement. Compared with a commonly used myoelectricity collecting electrode on the current market, the four-channelsurface myoelectricity active concentric circle electrode has the advantages of better noise resistance performance, more excellent moving unit action potential distinguishing capability, stronger surface anti-corrosion performance and simpler structure, a user easily wears the four-channel surface myoelectricity active concentric circle electrode, and the four-channel surface myoelectricity active concentric circle electrode is suitable for collecting a high-quality surface myoelectricity signal and can be used for the study of gesture recognition and the like.

Description

technical field [0001] This invention patent relates to a four-channel surface electromyography active concentric circular electrode and its preparation method. The electrode can realize the collection of high-quality myoelectric signals, and is suitable for fields such as myoelectric gesture control. Background technique [0002] At present, the commonly used surface electromyography signal (sEMG) acquisition mostly uses passive electrodes, that is, each electrode itself is connected to the acquisition circuit board independently through a shielded wire. This design is not only bulky and has many connections, but also the anti-interference ability of the signal is often not strong. The active electrode is an electrode that closely integrates the electrode and the preamplifier circuit. Through impedance transformation and amplification, the anti-interference ability of the signal will be significantly enhanced. At present, active electrodes are mostly used in array electro...

AI Technical Summary

Problems solved by technology

There have been studies on concentric circular differential electrodes, but there is no precedent for designing active electrodes with concentric circular structures

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