首先,介绍了脑机接口的基本概念,分析了低功耗高分辨率模/数转换芯片在脑机接口系统中的必要性。然后,讨论了国产ADC芯片BMF21A1的性能,以脑电模拟仪测试验证该芯片可应用于脑电微弱信号的采集。最后,以该芯片构成的ADC模组为例,介绍了眼电检测、专注度及冥想度检测以及稳态视觉诱发电位3种典型的脑机接口应用。
Abstract
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.
关键词
BMF21A1 /
脑机接口 /
眼电检测 /
专注度及冥想度 /
稳态视觉诱发电位
Key words
BMF21A1 /
BCI /
EOG detection /
attention and meditation /
SSVEP
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