发明名称 |
LOAD CIRCUIT DISCONNECTION DETECTOR |
摘要 |
<p>A load circuit disconnection detector includes: a current sensor (16) for detecting current flowing through a wire (W1) of a load circuit; and a protective device (100) for estimating temperature of the wire (W1) based on the detected current and forcibly turning off a semiconductor switch (Q1) if the estimated temperature of the wire reaches threshold temperature. The load circuit disconnection detector determines that there is a connection failure in the load circuit if a temperature increase calculated by a temperature calculation unit (24) is zero even a predetermined time (P1) after the semiconductor switch (Q1) is turned on.</p> |
申请公布号 |
EP2649693(A1) |
申请公布日期 |
2013.10.16 |
申请号 |
EP20110813454 |
申请日期 |
2011.11.29 |
申请人 |
YAZAKI CORPORATION |
发明人 |
IKUTA, YOSHINORI;MARUYAMA, AKINORI;NAKAMURA, YOSHIHIDE;UETA, KEISUKE |
分类号 |
H02H6/00;G01R31/02 |
主分类号 |
H02H6/00 |
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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