摘要
为了方便且实时获取全面的脑活动信息,设计了一种便携式脑电与血氧同步采集系统,用于实时监测脑功能活动。脑电电极将探测到的脑电信号滤波、放大,经蓝牙发送给微处理器,解析出脑电数据;光电探头将光信号转换成电信号,经放大分离、滤波和AD转换处理后,依据郎伯-比尔定律(Lambert-Beer law)计算出含氧血红蛋白(ΔHbO2)和脱氧血红蛋白含量(ΔHb)。最后,通过与商用仪器NuAmps和Oximeter的对比实验证实系统能在采集脑电信号的同时计算出ΔHbO2和ΔHb。
In order to obtain comprehensive brain activity information conveniently in real time,this study designs a portable EEG and blood oxygen synchronous acquisition system for real-time monitoring of brain functional activities.The EEG electrodes filter and amplify the detected EEG signals,and send them to the microprocessor via Bluetooth to analyze the EEG data;the photoelectric probe converts the optical signals into electrical signals,which are amplified and separated,filtered,and AD converted,calculates the brain's oxygenation and blood-red protein(ΔHbO2)and blood-red protein(ΔHb)by amplification of Lambert-Beer law.Finally,experiments with commercial instruments NuAmps and Oximeter show that the system can calculateΔHbO2 andΔHb while collecting EEG signals.
作者
刘伟清
邢丽冬
姚柳叶
邹止寒
张宇
LIU Weiqing;XING Lidong;YAO Liuye;ZOU Zhihan;ZHANG Yu(Nanjing University of Aeronautics and Astronautics,Nanjing,210016)
出处
《中国医疗器械杂志》
2021年第3期280-283,共4页
Chinese Journal of Medical Instrumentation
关键词
同步采集
脑电图
近红外光谱技术
便携
synchronous acquisition
EEG
near-infrared spectroscopy
portable
