The transient eddy current only induction by measuring, in medium burying position of the object which is packed time domain induction method and the device in order to specify

摘要

Method and the device (604,606), it forms direct current in the transmission loop, cutting off the direct current in the transmission loop making use of time induction, periodically, it forms the eddy current in ground of conductivity, passes by the ground of conductivity and it receives the magnetic field which it occurs from the eddy current which flows ground of conductivity (508) burying the object which is packed (512) position it specifies burying position of the object which is packed by specifying at the same time making use of the reception magnetic field.