同步测量心肺阻抗血流图仪的电路设计  

Circuit design of an instrument for synchronous measuringimpedance cardiogram and impedance pneumogram

作　　者：董秀珍 漆家学 

机构地区：[1]西安医学电子工程学教研室

出　　处：《第四军医大学学报》1995年第5期377-379,共3页Journal of the Fourth Military Medical University

摘　　要：作者根据同步测量心、肺阻抗血流图的原理，设计并研制成同步测量的心肺阻抗血流图仪．该仪器由两大部分组成：模拟电路部分，进行信号的检出和预处理；微机及其接口电路部分，完成对信号的采样、显示、自动识别、计算指标等功能．作者给出了模拟电路部分的总体设计方案，分析了具体电路的设计特点，以及抑制干扰措施．The authors dssigned a new instrument based on the theory of synchronuous measuring impedancecardiogram and impedance pneumogram. The instrument consists of two parts : the analog circuit which de-tects and pre-processes analog signals, and the microcomputer with its A/D converter which samples, dis-plays and processes signals and computes parameters. The authors’paper provided the total design scheme ofanalog circuits,characteristics of circuits and the method of decreasing noise.

关 键 词：心阻抗血流图仪 肺阻抗血流图仪 同步测量 设计 

分 类 号：TH772.2[机械工程—仪器科学与技术] R540.4[机械工程—精密仪器及机械]