有源拉普拉斯电极的设计

Design of active Laplacian electrodes

文中介绍了有源拉普拉斯电极的设计,用于检测微弱信号,辅助信号源定位。该电极将同心环形结构的拉普拉斯电极与生物电前置放大电路结合在一起,临床实验证明,可以很好地抑制共模干扰,提供更为局部化的细微信息。该设计电路结构简单,无需刻意匹配就可以达到很高的共模抑制比。

In this article, an active Laplacian electrode, which is used to detect weak signal and affiliate location of signal source, is introduced. It integrates concentric rings electrode with bioelectricity preamplifier and is capable of acquiring localized information. The design has advantages of simple, low cost and high common mode restrain ratio.