Brain wave collecting and transmitting terminal

Abstract

The invention provides a brain wave collecting and transmitting terminal. The brain wave collecting and transmitting terminal comprises a head wearing device and a monitoring bracelet, wherein the head wearing device and the monitoring bracelet are connected via Bluetooth; the head wearing device comprises a head band, a monitoring arm, a forehead sensor, a first bluetooth module and an ear clip; the monitoring bracelet comprises an ARM kernel system, a brain electric front-end amplifying circuit, a brain electric filter circuit, a power circuit, a backup battery system, a keying circuit, an LED display circuit, a second bluetooth module, a USB-C interface circuit and a clock circuit. The brain wave collecting and transmitting terminal can be worn to the head, the connection between the Bluetooth and a smart phone is utilized, the terminal collects the brain wave information through an external electrode on the head, after being subjected to amplification, filtering and digital processing, the brain wave information is transmitted to the smart phone via Bluetooth; the brain wave information of a user can be analyzed and stored, so that the purposes of medical monitoring, health analysis, fatigue reminding and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a terminal for collecting and transmitting brain waves. Background technique [0002] The electrical signal is a biological potential related to reflecting the neural activity of the brain. It is formed by the synchronous summation of the potential of a large number of neurons in the cortex, and is the result of the joint activity of many neurons. Testing it can be used in neurodiagnostic and cognitive physiopsychological research, as well as in the field of rehabilitation. It is now clear that the amplitude of the brain waves guided on the scalp, under normal circumstances, is 5-200μV from the peak to the bottom (while the potential change from the cerebral cortex can reach 1mV), and its frequency ranges from less than 1Hz to 100Hz , the waveform varies with different brain locations, and is related to the level of wakefulness and sleep, and there are large individual differenc...

AI Technical Summary

Problems solved by technology

It is now clear that the amplitude of brain waves guided on the scalp, under normal circumstances, is 5-200μV from the peak to the bottom (while the potential change from the cerebral cortex can reach 1mV), and its frequency ranges from less than 1Hz to 100Hz , the waveform varies with different brain locations, and is related to the level of wakefulness and sleep, and there are large individual differences, that is to say, brain waves also have different performances in different normal people, so EEG signals The realization of amplification and acquisition is still a difficult problem

The main difficulty in realizing the amplification of EEG signals lies in the removal of various interferences while amplifying with high gain.

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