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    • 1. 发明申请
    • A CORELESS CURRENT PROBE AND A METHOD OF MEASURING CURRENT
    • 无源电流探头和测量电流的方法
    • WO2014164551A1
    • 2014-10-09
    • PCT/US2014/022775
    • 2014-03-10
    • GMW ASSOCIATES INCORPORATED
    • WALKER, Ian JamesLAW, Karron Louis
    • G01R27/28
    • G01R15/202G01R15/207G01R19/0092
    • A coreless current probe has a body defining an opening in a plane and a central line through the opening which is normal to the plane. A conductor carrying a current to be measured can be accommodated in the opening. At least three coreless single point magnetic field sensors are distributed in the body around the opening. The linear spacings between adjacent sensors around the opening are not all the same. In another embodiment, the sensors are not all located on a common cylindrical surface. One embodiment has a U-shaped body enabling engagement with a current carrying conductor. The sensors are arranged so that the sum of the outputs each with appropriate weighting is zero in any homogenous field. The sensors outputs have differing weightings so as to maximize rejection by the probe of external magnetic fields.
    • 无芯电流探针具有在平面中限定开口的主体和通过该平面垂直的开口的中心线。 承载待测电流的导体可以容纳在开口中。 至少三个无芯单点磁场传感器分布在开口周围的体内。 开口附近的相邻传感器之间的线性间距并不完全相同。 在另一个实施例中,传感器并不都位于共同的圆柱形表面上。 一个实施例具有能够与载流导体接合的U形体。 这些传感器被布置成使得在任何均匀场中各自具有适当加权的输出的总和为零。 传感器输出具有不同的权重,以便最大限度地利用外部磁场探测器的抑制。