A flexible dry electrode for collecting EEG signals and its preparation method

Abstract

The invention relates to a flexible dry type electrode for collecting electroencephalograms and a preparation method thereof. The flexible dry type electrode comprises an electrode body and an electric connecting piece, wherein the electrode body comprises an electrode bottom and array-structure probes arranged on the electrode bottom. The electric connecting piece is arranged at the electrode bottom, and the electric connecting piece and the array-structure probes are located on the two opposite surfaces of the electrode bottom correspondingly. The array-structure probes comprise a plurality of probe bodies annularly arranged along the electrode bottom, and the tail ends of the probe bodies in a probe array formed after the multiple probe bodies are arranged form a sunken three-dimensional arc-shaped curved surface. The flexible dry type electrode has the advantages that conductive adhesive / conductive paste is not needed, operation is easy and convenient, impedance is low, long-term stability, long-term reliability and flexibility are achieved, wearing of the flexible dry type electrode is comfortable and safe, the cost is low, and the machining technology is simple.

Description

technical field [0001] The invention relates to electrodes in the fields of medical equipment and wearable electronics, in particular to a flexible dry electrode for measuring brain electrical signals in areas covered by hair and a preparation method thereof. Background technique [0002] Electroencephalogram signal (EEG) is the basic signal of the human body, which can reflect the health status of the human body, cognitive activities and other information, and is an important parameter for brain science research, human physiological research and clinical diagnosis of brain diseases. At the same time, the monitoring and intervention of EEG signals is also an important part of the research and application of brain-computer interface (BCI). The acquisition of EEG signals in hair-covered areas requires the use of EEG electrodes, and the key to obtaining high-reliability and high-stability EEG signals is to develop EEG electrodes with good performance. Although the current tech...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of high contact impedance and poor comfort in existing dry electrodes, the invention provides a flexible dry electrode for collecting EEG signals, which has the advantages of no need for conductive glue / paste, simple and convenient operation, low impedance, and long-term stability Reliable, flexible, comfortable and safe to wear, low cost, and simple processing technology

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