Wearable single-conduction universal in-ear electroencephalogram sensor

Abstract

A wearable single-conduction universal in-ear electroencephalogram sensor is characterized in that the universal in-ear electroencephalogram sensor is composed of a universal earplug substrate and a powder sintering electrode, and the powder sintering electrode is arranged in the universal earplug substrate; the manufacturing process of the universal in-ear electroencephalogram sensor comprises the steps that S1, ear molds are manufactured, wherein elastic ear mold silica gel with biocompatibility is used for manufacturing a plurality of human binaural ear molds; s2, scanning: performing 3D scanning on the ear mold; s3, reconstruction and computer-aided design modeling are carried out; S4, a mold for pouring the universal in-ear earplug is manufactured, and an electrode wire position is reserved in the mold; s5, embedding a wire: embedding the AgCl powder sintering electrode and the wire into a preformed hole of the mold; and S6, a pouring and curing process: injecting a flexible curing material into the mold, and heating and curing to complete the manufacturing of the ear electroencephalogram sensor. The device is not prone to falling off in the wearing process, better fits the ear canal structure of the human body, and has universality; and the electrode can be repeatedly used and has good wear resistance.

Description

technical field [0001] The invention belongs to the technical field of electroencephalogram sensors, in particular to a wearable single-conduct general in-ear electroencephalogram sensor. Background technique [0002] Electroencephalography (EEG) is a mature technology that provides information for understanding brain activity and is widely used in clinical practice and cognitive neuroscience. Although EEG is widely used, for portable wearable devices, brain The number of electrical electrode channels is limited, such as brain-computer interface, long-term EEG monitoring of neurological diseases and sleep monitoring. An EEG originates from the combined firing of nerves, where electrical current from neurons flows to the cerebral cortex through surrounding conductive media, such as brain tissue, so voltage fluctuations around the brain can be measured by placing electrodes on the surface of the brain. [0003] When the concept of ear EEG was proposed, the ear EEG sensor mode...

AI Technical Summary

Problems solved by technology

Although the ear EEG sensor based on conductive silver cloth meets the requirements of wearing comfort, it is easy to form wrinkles on the electrode surface when the earplug is inserted repeatedly, and the silver content of the conductive silver cloth is not high, which is likely to cause interference to the collected signal

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