公开(公告)号：EP3039435A4

公开(公告)日：2017-01-04

申请号：EP14840683

申请日：2014-03-26

申请人： HONEYWELL INT INC

发明人： PECZALSKI ANDY ,  PANT BHARAT B

IPC分类号： G01R15/20 ,  G01R19/00 ,  G01R19/165 ,  G01R33/00 ,  G01R33/09 ,  G01V3/02 ,  H02H1/00 ,  H02H3/08

CPC分类号： G01R15/205 ,  G01R15/207 ,  G01R19/0053 ,  G01R19/16547 ,  G01R33/0023 ,  G01R33/096 ,  G01V3/02 ,  H02H1/0007 ,  H02H3/08

摘要： Apparatus and associated methods relate to a measurement system that calculates a current in a conductor based on an odd-order spatial derivative function of signals representing magnetic-field strengths within a hole in the conductor. In an illustrative embodiment, the odd-order spatial derivative function may generate an output signal representing a spatial derivative of the in-hole magnetic field greater than the first-order. The three or more magnetic-field sensors may be configured to align on the hole's axis when inserted into the hole. When inserted into the hole, the sensors may be aligned on an axis perpendicular to a direction of current flow and be responsive to a magnetic-field directed perpendicular to both the direction of current flow and the aligned axis. Some embodiments may advantageously provide a precise measurement indicative an electrical current in the electrical conductor while substantially rejecting a stray magnetic field originating from an adjacent electrical conductor.

摘要翻译： 装置和相关方法涉及一种测量系统，该测量系统基于表示导体内的孔内的磁场强度的信号的奇数阶空间导数函数来计算导体中的电流。 在说明性实施例中，奇数空间微分函数可以产生表示大于一阶的孔内磁场的空间导数的输出信号。 三个或更多个磁场传感器可以被配置为当插入孔时在孔的轴线上对准。 当插入到孔中时，传感器可以在垂直于电流流动方向的轴上对准，并且响应于垂直于电流方向和对准轴线的磁场。 一些实施例可以有利地提供指示电导体中的电流的精确测量，同时基本上拒绝源自相邻电导体的杂散磁场。