Patent ID: 7408342
Filing Date: 2008-08-05
Classification: G01R

Abstract:
1. Device for measuring at least one component of a current comprising: at least one probe comprising a first and a second mangetoresistive or magnetoinductive sensors which are adapted to detect a first and respectively a second magnetic fields along a first and respectively a second predetermined selected measurement axes, the first and the second predetermined selected measurement axes having a first and respectively a second directions, the first and second sensors being rigidly connected to each other in a position such that the first and second measurement axes are at an angle other than zero, the probe further comprising output terminals which are specific to each sensor in order to provide a signal which is representative of the magnetic field measured by each of the sensors along the selected measurement axis thereof; a computing device for determining a derivative of the first magnetic field relative to the second direction and a derivative of the second magnetic field relative to the first direction, the computing device calculating a difference between the derivative of the first magnetic field relative to the second direction and the derivative of the second magnetic field relative to the first direction, said difference being representative of a component of the current.