Insulation resistance drop detector and method of detecting state thereof
    1.
    发明申请
    Insulation resistance drop detector and method of detecting state thereof 有权
    绝缘电阻跌落检测器及其状态检测方法

    公开(公告)号:US20050073317A1

    公开(公告)日:2005-04-07

    申请号:US10959503

    申请日:2004-10-07

    摘要: An insulation resistance drop detector 50 and a method of detecting a state of malfunction of the detector 50 are provided. When open of a coupling capacitor Co or malfunction of a low pass filter 53 is occurred, a time constant of the low pass filter 53 is decreased and a rising time of an output of the low pass filter 53 against an output of a pulse signal P1 becomes shorter than that in a state of normal. Thereby, malfunction of the detector 50 can be detected based on the output of the filter 53 corresponding to change of frequency of the pulse signal P1.

    摘要翻译: 提供绝缘电阻降检测器50和检测器50故障状态的方法。 当耦合电容器Co断开或发生低通滤波器53的故障时,低通滤波器53的时间常数减小,低通滤波器53的输出的上升时间相对于脉冲信号P1 变得比正常情况下要短。 因此,可以基于与脉冲信号P1的频率变化对应的滤波器53的输出来检测检测器50的故障。

    Insulation resistance drop detector and method of detecting state thereof
    2.
    发明授权
    Insulation resistance drop detector and method of detecting state thereof 有权
    绝缘电阻跌落检测器及其状态检测方法

    公开(公告)号:US07005860B2

    公开(公告)日:2006-02-28

    申请号:US10959503

    申请日:2004-10-07

    IPC分类号: G01R31/00 G08B21/00

    摘要: An insulation resistance drop detector 50 and a method of detecting a state of malfunction of the detector 50 are provided. When open of a coupling capacitor Co or malfunction of a lowpass filter 53 is occurred, a time constant of the low pass filter 53 is decreased and a rising time of an output of the lowpass filter 53 against an output of a pulse signal P1 becomes shorter than that in a state of normal. Thereby, malfunction of the detector 50 can be detected based on the output of the filter 53 corresponding to change of frequency of the pulse signal P1.

    摘要翻译: 提供绝缘电阻降检测器50和检测器50故障状态的方法。 当耦合电容器Co断开或低通滤波器53发生故障时,低通滤波器53的时间常数减小,低通滤波器53的输出与脉冲信号P1的输出的上升时间成为 短于正常状态。 由此,可以基于与脉冲信号P 1的频率变化对应的滤波器53的输出来检测检测器50的故障。