ELECTRIC CURRENT MEASUREMENT APPARATUS AND ELECTRIC CURRENT MEASUREMENT METHOD

Title:

ELECTRIC CURRENT MEASUREMENT APPARATUS AND ELECTRIC CURRENT MEASUREMENT METHOD

Document Type and Number:

WIPO Patent Application WO/2015/056397

Kind Code:

A1

Abstract:

　In order to measure power consumption or manage storage or consumption of electric power by an electrical device or electronic device, it is necessary to detect which and to what extent electric currents of each frequency component are flowing in a conducting wire through which overlapping electric currents of numerous frequencies are flowing. An electric current measurement apparatus for measuring an electric current flowing in a conducting wire in a circuit to be measured, the electric current measurement apparatus characterized by having a magnetic element to which a drive electric current terminal and a measurement voltage terminal are provided, a holder for fixing a positional relationship of the conducting wire to a magnetic body, an electric current source capable of outputting at least one frequency of alternating electric current across the drive electric current terminal, a voltage meter for measuring a voltage across the measurement voltage terminal, and a low-pass filter provided between the measurement voltage terminal and the voltage meter.

Inventors:

TSUJIMOTO HIROAKI (JP)

Application Number:

PCT/JP2014/004648

Publication Date:

April 23, 2015

Filing Date:

September 10, 2014

Export Citation:

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Assignee:

UNIV OSAKA CITY (JP)

International Classes:

G01R19/00; G01R15/20

Domestic Patent References:

WO2012105459A1

2012-08-09

Foreign References:

JP2002131342A	2002-05-09
JP2009527745A	2009-07-30
JP2002521696A	2002-07-16
JP2013156029A	2013-08-15
JPH07104011A	1995-04-21
JP2007322125A	2007-12-13

Other References: