CURRENT DETECTOR AND CURRENT DETECTION METHOD

• Main Authors: IWAMI EIJI, IKUSHIMA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2016
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a current detector handling DC current, which is generated in aliasing operation as a current to be measured, capable of reducing the possibility of erroneous detection.SOLUTION: A current detector 10 for detecting a current to be measured which flows on a conductor wire 40 includes: a detection section 11; and a determination section 12. The detection section 11 detects a current flowing on the conductor wire 40 by using an excitation current of each of plural frequencies. The determination section 12 determines whether or not the current flowing on the conductor wire 40 is the current to be detected based on the detection results detected by the detection section 11 on each of the plural frequencies.SELECTED DRAWING: Figure 1 【課題】エイリアシングで発生した直流電流を被測定電流として誤検出する可能性を低くすることができる電流検出装置を提供する。【解決手段】導線４０に流れる被測定電流を検出する電流検出装置１０は、検出部１１と判定部１２とを備える。検出部１１は、複数の周波数のそれぞれについて、当該周波数の励磁電流を用いて導線４０に流れる電流を検出する。判定部１２は、複数の周波数のそれぞれに対して検出部１１が検出した各検出結果に基づいて、導線４０に流れる電流が検出対象の電流であるか否かの判定を行う。【選択図】図１