Title :
A new type of fluxgate magnetometer using apparent coercive field strength measurement
Author_Institution :
Physikalisch-Tech. Bundesanstalt, Braunschweig, West Germany
fDate :
9/1/1989 12:00:00 AM
Abstract :
A novel fluxgate magnetometer is introduced which employs the measurement of the change of the apparent coercive field strength derived from the magnetizing current. The external magnetic field is periodically measured at a frequency which is the same as that of the magnetizing current of the sensor. The magnetometer shows a standard deviation of the relative nonlinearity of less than 0.01% and a resolution of 0.1 nT, and it can measure transient external magnetic fields with a 100-kHz sampling rate
Keywords :
coercive force; magnetic field measurement; magnetometers; apparent coercive field strength measurement; fluxgate magnetometer; magnetizing current; resolution; sampling rate; standard deviation; transient external magnetic fields; Current measurement; Integrated circuit measurements; Magnetic circuits; Magnetic cores; Magnetic field measurement; Magnetic hysteresis; Magnetic sensors; Magnetic separation; Magnetometers; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
