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公开(公告)号:US20090160427A1
公开(公告)日:2009-06-25
申请号:US12340305
申请日:2008-12-19
申请人: William R. Drake , John A. Kujawa
发明人: William R. Drake , John A. Kujawa
IPC分类号: G01R31/02
CPC分类号: G01R19/16566 , G01R1/04 , G01R15/207
摘要: A current detector and indicator unit are coupled to a shore power cord for monitoring for corrosion-causing galvanic current on the ground wire of the power cord. A current transducer coupled to the ground wire senses current and provides a signal corresponding to the magnitude of the sensed current to a microcontroller. The microcontroller compares the magnitude of the current signal to one or more predetermined thresholds and outputs signals to an indicator unit to display the level of galvanic activity accordingly.
摘要翻译: 电流检测器和指示器单元耦合到岸电电源线,用于监测电源线的接地线上的腐蚀性电流。 耦合到接地线的电流传感器感测电流并且向微控制器提供对应于感测电流的幅度的信号。 微控制器将电流信号的幅度与一个或多个预定阈值进行比较,并将信号输出到指示器单元以相应地显示电流活动的电平。
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公开(公告)号:US07994795B2
公开(公告)日:2011-08-09
申请号:US12340305
申请日:2008-12-19
申请人: William R. Drake , John A. Kujawa
发明人: William R. Drake , John A. Kujawa
IPC分类号: G01R31/02
CPC分类号: G01R19/16566 , G01R1/04 , G01R15/207
摘要: A current detector and indicator unit are coupled to a shore power cord for monitoring for corrosion-causing galvanic current on the ground wire of the power cord. A current transducer coupled to the ground wire senses current and provides a signal corresponding to the magnitude of the sensed current to a microcontroller. The microcontroller compares the magnitude of the current signal to one or more predetermined thresholds and outputs signals to an indicator unit to display the level of galvanic activity accordingly.
摘要翻译: 电流检测器和指示器单元耦合到岸电电源线,用于监测电源线的接地线上的腐蚀性电流。 耦合到接地线的电流传感器感测电流并且向微控制器提供对应于感测电流的幅度的信号。 微控制器将电流信号的幅度与一个或多个预定阈值进行比较,并将信号输出到指示器单元以相应地显示电流活动的电平。
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