发明名称 |
ELECTRIC CURRENT MEASURING DEVICE, ELECTRIC CURRENT MEASURING METHOD, AND ELECTRIC CURRENT MEASURING PROGRAM |
摘要 |
A current measurement device has a rectification unit rectifying an alternating-current signal, an A/D conversion unit converting an analog signal corresponding to a signal obtained by the rectification into a digital signal, an addition unit for adding digital signals corresponding to alternating-current signals during a sampling period among the digital signals obtained by the conversion, and a current value conversion unit for converting an additional value obtained by the addition by the addition unit into a current value using a current value conversion function. The sampling period is a common multiple of the periods of alternating-current signals of 50 Hz and 60 Hz, the current values of which are to be measured. |
申请公布号 |
US2012112727(A1) |
申请公布日期 |
2012.05.10 |
申请号 |
US201013383376 |
申请日期 |
2010.06.09 |
申请人 |
MOTOHASHI HAYATO;HIRAYAMA HIROFUMI;NAGASHIMA NAOKI;YAMATAKE CORPORATION |
发明人 |
MOTOHASHI HAYATO;HIRAYAMA HIROFUMI;NAGASHIMA NAOKI |
分类号 |
G01R19/25;G05F3/04 |
主分类号 |
G01R19/25 |
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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