3 A THREE-AXIS MAGNETIC SENSOR AN OMNIDIRECTIONAL MAGNETIC SENSOR AND AN AZIMUTH MEASUREING METHOD USING THE SAME

摘要

PURPOSE: A three-axis magnetic sensor, omnidirectional magnetic sensor and azimuth measuring method using the same are provided to be small and to automatically compensate inclination. CONSTITUTION: A three-axis magnetic sensor, a hybrid magnetic sensor(200), comprises a two-axis magnetic sensor, a flux gate type magnetic sensor(100), formed on a printed circuit board on which coil patterns are formed to detect two-axis components of magnetic vector defined on a plane parallel with the printed circuit board; and a magnetic detective element, a Hall element(24) detecting a component of the magnetic vector perpendicular to the plane, all of which integrally constitute a hybrid integrated circuit.