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    • 10. 发明申请
    • STATIC CHARGE FILTER FOR CARDIAC ELECTRICAL SIGNALS CORRUPTED WITH STATIC CHARGE AND ROUTED TO AN ELECTROCARDIOGRAPH (EKG) MONITOR
    • 静态电荷滤波器用于静脉电荷腐蚀的心脏电信号并被引导至心电图(心电图)监测器
    • WO2017093546A1
    • 2017-06-08
    • PCT/EP2016/079682
    • 2016-12-02
    • KONINKLIJKE PHILIPS N.V.
    • CHAPPO, Marc, AnthonySALK, David, Dennis
    • A61B5/00A61B5/0428A61B5/0456
    • A61B5/0456A61B5/0428A61B5/7203A61B5/7225A61B5/7289A61B5/7292
    • A static charge filter (522) removes static charge in a cardiac electrical signal. The static charge filter includes a first amplifier (608) configured to amplify an input signal, which includes the cardiac electrical signal and static charge from an electrode, which is in a path of an X-ray beam. The static charge filter further includes a limiter (614) configured to limit a maximum voltage of the signal based on a predetermined clamping threshold, producing a voltage clamped signal. The static charge filter further includes a filter (616) configured to filter high frequency components of the voltage clamped signal, producing a filtered signal. The static charge filter further includes a second amplifier (620) configured to scale an amplitude of the filtered signal so that cardiac electrical signal in an output signal has a same voltage level as a voltage level of the cardiac electrical signal in the input signal.
    • 静电荷滤波器(522)去除心电信号中的静电荷。 静电荷滤波器包括第一放大器(608),其被配置为放大输入信号,该输入信号包括来自位于X射线束的路径中的电极的心电信号和静电荷。 静电荷滤波器还包括限幅器(614),其被配置为基于预定钳位阈值来限制信号的最大电压,从而产生钳位电压信号。 静电荷滤波器还包括滤波器(616),其被配置为对电压钳位信号的高频分量进行滤波,从而产生滤波后的信号。 静电荷滤波器还包括第二放大器(620),其被配置为缩放滤波信号的幅度,使得输出信号中的心电信号具有与输入信号中的心电信号的电压电平相同的电压电平。 / p>