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1. 发明申请

US20020183797A1 Method and apparatus for reducing noise and detecting electrode faults in medical equipment 有权
标题翻译：降低医疗设备噪声和检测电极故障的方法和装置
公开(公告)号：US20020183797A1
公开(公告)日：2002-12-05
申请号：US10200411
申请日：2002-07-22
申请人： GE Medical Systems Information Technologies, Inc.
发明人： Wilhelm J. Kaiser , Horst Weber , Wolfgang Winter
IPC分类号： A61N001/37
CPC分类号： A61B5/0424
摘要： A method and apparatus for reducing noise and detecting electrode faults in a physiological activity acquisition system. The method includes the act of delivering a carrier signal through an electrode connected to a subject. Once the carrier signal is delivered, a combined signal having an electrical-activity portion and a carrier-signal portion is sensed by at least one signal sensing electrode attached to the subject. A low-pass, finite impulse response filter, having a first zero point frequency substantially the same as the carrier signal, separates the carrier signal portion from the electrical activity portion. An impedance value for the sensing electrode is calculated using the carrier signal portion. The calculated impedance value is compared against a known value to determine whether an electrode fault exists.
摘要翻译：一种用于减少生理活动获取系统中噪声和检测电极故障的方法和装置。该方法包括通过连接到对象的电极传递载波信号的动作。一旦载波信号被传送，具有电活动部分和载波信号部分的组合信号由连接到对象的至少一个信号感测电极来感测。具有与载波信号基本相同的第一零点频率的低通有限脉冲响应滤波器将载波信号部分与电活动部分分离。使用载波信号部分计算感测电极的阻抗值。将计算的阻抗值与已知值进行比较，以确定是否存在电极故障。

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