Electroencephalogram acquisition electrode based on electric conduction liquid

Abstract

The invention relates to an electroencephalogram acquisition electrode based on an electric conduction liquid, belongs to the technical field of brain-computer interfaces, and solves the technical problems that in the prior art, in the use process, a wet electrode is time-consuming and tedious, the continuous use time is short, automatic injection of the electric conduction liquid of multi-channelelectrodes is difficultly achieved, the contact elasticity of the wet electrode and the scalp is poor, and the use comfort level is low. The electroencephalogram acquisition electrode based on the electric conduction liquid comprises a base, a shell, an electrode column, an inlet check valve, an outlet stop valve and a wire, wherein the inlet check valve and the outlet stop valve are arranged onthe two sides of the shell respectively, the electrode column is installed on the base, and a liquid storage cavity is defined by the base and the shell. The inlet check valve and the outlet stop valve can be constructed into a device for separating the electric conduction liquid in the liquid storage cavity from an external electric conduction liquid, and the situation that the electric conduction liquid is conductive to cause signal interference between the multi-channel electrodes can be prevented. By means of the electroencephalogram acquisition electrode, long-time effective acquisition and monitoring of electroencephalogram signals are achieved.

Description

technical field [0001] The invention relates to the technical field of brain-computer interface, in particular to a conductive fluid-based electroencephalogram acquisition electrode. Background technique [0002] At present, the commonly used wet electrodes for EEG collection mainly use conductive paste and conductive liquid as conductive media. The wet electrodes based on conductive liquid have the following two problems: First, the experimental preparation process is time-consuming and cumbersome, and requires the assistance of outsiders. It takes a lot of time and energy to manually inject conductive liquid into each collection position one by one, and the conductive liquid used will continue to evaporate and dry due to the influence of human body temperature and ambient temperature, which will increase the electrode impedance and reduce the quality of EEG signals. To realize the long-term effective collection and monitoring of EEG signals, the conductive liquid must be i...

AI Technical Summary

Problems solved by technology

[0003] In view of the above analysis, the embodiment of the present invention aims to provide a conductive fluid-based EEG acquisition electrode to solve the problem of time-consuming and cumbersome use of existing wet electrodes, short continuous use time, and difficulty in implementing multi-channel electrode conductive fluid. Technical problems such as automatic injection, poor contact elasticity with the scalp, and low comfort

Images