The basic concepts of brain-computer interface(BCI) are described and the necessity of low-power high-resolution ADC chips in BCI system is analyzed.Then the performance of the domestic ADC chip BMF21A1 is discussed,and the EEG simulator is used to verify that the chip can be applied to the acquisition of weak EEG signals.At last,taking the ADC module composed of the chip as an example,three typical applications of BCI are described,including EOG detection,attention and meditation detection,and SSVEP.
Key words
BMF21A1 /
BCI /
EOG detection /
attention and meditation /
SSVEP
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