发明名称 |
ELECTRIC LEAKAGE DETECTION APPARATUS |
摘要 |
An electric leakage detection apparatus may quickly detect an electric leakage. An electric leakage detection apparatus includes a pulse generator that supplies a pulse to a coupling capacitor, a voltage detector that detects a voltage at the coupling capacitor, an electric leakage determination unit that compares the voltage detected by the voltage detector to a first threshold and determines presence or absence of the electric leakage of a DC power supply based on a comparison result. The electric leakage detection apparatus also includes a discharge determination unit that compares the voltage detected by the voltage detector to a second threshold lower than the first threshold and determines whether the detection voltage becomes lower than the second threshold by a discharge of the coupling capacitor. The pulse generator generates a new pulse when the discharge determination unit determines that the detection voltage becomes lower than the second threshold. |
申请公布号 |
US2012206153(A1) |
申请公布日期 |
2012.08.16 |
申请号 |
US201213398658 |
申请日期 |
2012.02.16 |
申请人 |
NARUSE HIDEAKI;MIYAMOTO SATORU;FUJII MASAKI;KODAIRA KAZUSHI;IKUSHIMA YOSHIHIRO;OMRON AUTOMOTIVE ELECTRONICS CO., LTD. |
发明人 |
NARUSE HIDEAKI;MIYAMOTO SATORU;FUJII MASAKI;KODAIRA KAZUSHI;IKUSHIMA YOSHIHIRO |
分类号 |
G01N27/00 |
主分类号 |
G01N27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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