Dry electrode and manufacturing method thereof

Abstract

The embodiment of the invention discloses a dry electrode and a manufacturing method thereof. The dry electrode comprises conduits (2), elastic parts (3) and electrode masts (4), wherein the conduits (2) are fixedly arranged on one side of a substrate (1); the elastic parts (3) are located in the conduits (2) and the elastic coefficient of the elastic parts (3) is correlated with the positions of the elastic parts (3) on the substrate (1); the electrode masts (4) are located in the conduit (2) and move in the conduits (2) under the effect of the elastic parts (3). When the dry electrode touches a scalp, the electrode masts (4) of the dry electrode disclosed by the embodiment of the invention can correspondingly stretch out or retract back under the effect of the elastic parts (3) according to the curvature of each point on a head, the elastic force of the electrode posts () can be comparatively uniform according to the correlation between the positions thereof and the elastic coefficient of the elastic parts (3), thus the dry electrode is guaranteed to be in good contact with the scalp and the electrode masts (4) on the periphery of the substrate are prevented from having the defect of poor contact due to smaller elastic force.

Description

technical field [0001] Embodiments of the present invention generally relate to the field of EEG measurement, and more specifically, relate to a dry electrode and a manufacturing method thereof. Background technique [0002] Human tissue cells are always producing very weak bioelectrical activities spontaneously and continuously. The EEG signal is the overall effect of the electrical activity of a large number of brain nerve cells in a highly coherent state on the cerebral cortex. If the electrodes placed on the scalp are used to collect EEG signals, amplified by EEG detection equipment and recorded on special paper, a graph and curve with a certain waveform, amplitude, frequency and phase can be obtained, that is, EEG. When pathological or functional changes occur in brain tissue, EEG signals also change accordingly, thus providing a basis for brain research, physiological and neurological research, clinical diagnosis and rehabilitation. [0003] In the process of EEG sig...

AI Technical Summary

Problems solved by technology

This structure can make all the dry electrode posts 24 form good contact with the scalp at the same time as possible. However, this structure does not use the middle area, so the contact area with the scalp is small, so it will cause larger contact resistance. It will cause large thermal noise and is not conducive to the acquisition of EEG signals

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