摘要
脑电图是诊断脑部疾病的重要而先进的手段,但是其成功依赖于适当的仪器设备。本文基于虚拟仪器的思想和Lab-VIEW平台,提出了一个虚拟脑电图机的设计。论文的重点之一为脑电信号输入通道的设计,这些通道由放大器和滤波器组成,目的是得到消除了噪声的真正的脑电波信号。经过调理的信号由一个具有USB接口的数据采集模块予以数字化并传输给在PC上运行的基于LabVIEW的脑电图软件。在实验室制作的样机实现了脑电信号的采集及其分别在时域和频域进行分析的能力。
Electroencephalograph（EEG）is an advanced and important measure to diagnose some encephalic diseases but its success depends on adequate instrumentation.The paper proposes the design of a virtual EEG device based on the concept of virtual instrument and the platform of LabVIEW.The paper puts one of the stress on design of the signal input channels composed of amplifiers and filters aiming at the reduction of noises and the acquisition of real encephalic waves.The conditioned signals are digitized with a USB data acquisition module and communicated to the LabVIEW-based EEG software running in a common PC.The prototype built in the Lab exhibits the capability of encephalic waves capture and the analysis respectively in time and frequency domains.
出处
《微计算机信息》
2011年第10期36-38,共3页
Control & Automation
