THREE-AXIS MAGNETIC SENSOR, OMNIDIRECTIONAL MAGNETIC SENSOR, AND AZIMUTH MEASURING METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To solve a problem wherein a magnetic sensor for earth magnetism is inclined by an attitude of a user and a holding manner by the user not to allow accurate azimuth measurement, when the magnetic sensor is assembled in a cellular phone.;SOLUTION: This hybrid magnetic sensor 200 constituted integrally as a hybrid IC includes a flux gate type magnetic sensor 100 formed using a substrate as a main body, and for detecting two axial components of a magnetic vector defined by a plane parallel to the substrate, a Hall element 24 for detecting a component of the magnetic vector perpendicular to the substrate, an inclined sensor 22 for detecting an inclination angle of the substrate, and a CPU 20. The azimuth of the earth magnetism is accurately calculated, since the detected three-dimensional magnetic vector is corrected taking the inclination of the substrate into account.;COPYRIGHT: (C)2006,JPO&NCIPI