| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a magnetic field detector which can change detection sensitivity in a direction where magnetic field detection is needed and a direction where the magnetic field detection is suppressed by using a three-axis sensor which detects a magnetic field from the outside. <P>SOLUTION: Three magnetic sensors detecting magnetic vectors are used. An X-axis sensor 3 is provided in an X-axis and a Y-axis sensor 4 is provided in a Y-axis while a Z-axis sensor 5 is provided in a Z-axis. In a control part, detection outputs obtained from the individual sensors 3, 4 and 5 are multiplied by a sensitivity coefficient, and accordingly, a detection output becoming an output not lower than a prescribed output is acquired. By differentiating the sensitivity coefficient in each direction, the sensitivity can be made different in the direction of each of three-dimensional coordinates. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
