公开(公告)号：US06348788B1

公开(公告)日：2002-02-19

申请号：US09406509

申请日：1999-09-28

申请人： Jun Jason Yao ,  Gerard J. Sullivan ,  Robert J. Anderson

发明人： Jun Jason Yao ,  Gerard J. Sullivan ,  Robert J. Anderson

IPC分类号： G01R3302

CPC分类号： G01R17/08 ,  G01R15/185 ,  G01R19/20 ,  G01R33/0286

摘要： A current sensor includes a deflectable member disposed in a magnetic field. Nulling or compensating members may be mechanically coupled to the deflectable member. Feedback or readout devices coupled to the structure provide signals indicative of deflection of the deflectable member under the influence of applied current and the magnetic field. Nulling current applied to the nulling members tends to oppose deflection of the deflectable member. The nulling current may be modulated to drive the feedback signal to a desired level and is used as a basis for calculating the current to be measured. The current may be measured directly upon calibration of feedback devices coupled to the deflectable member or to the nulling members. Arrays of sensors may be coupled to common busses for applying measured and nulling currents to sensors of the arrays and for detecting feedback signals.

摘要翻译： 电流传感器包括设置在磁场中的可偏转构件。 空转或补偿构件可以机械地联接到可偏转构件。 耦合到该结构的反馈或读出装置提供指示在施加的电流和磁场的影响下可偏转构件的偏转的信号。 施加到归零构件的空转电流倾向于抵抗可偏转构件的偏转。 可以调制归零电流以将反馈信号驱动到期望的电平，并将其用作计算待测电流的基础。 可以在校准耦合到可偏转构件或归零构件的反馈装置时直接测量电流。 传感器的阵列可以耦合到共同的总线，以将测量和归零电流施加到阵列的传感器并用于检测反馈信号。