发明名称 |
Control device of elevator for detecting abnormalities in a clock signal |
摘要 |
In an elevator control apparatus, calculations regarding the control of an elevator are performed in a duplexed system including first and second processing portions. A first clock signal from a first clock is input to the first processing portion. A second clock signal from a second clock is input to the second processing portion. The first and second clock signals are input to a clock abnormality detecting circuit. The clock abnormality detecting circuit counts the numbers of pulses of the first and second clock signals, and detects abnormalities in the first and second clock signals from a difference between the numbers of the pulses.
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申请公布号 |
US7549513(B2) |
申请公布日期 |
2009.06.23 |
申请号 |
US20040574226 |
申请日期 |
2004.04.27 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
CHIDA AKIHIRO |
分类号 |
B66B1/28;B66B1/24;B66B3/00;B66B5/00;B66B5/06 |
主分类号 |
B66B1/28 |
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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