| 摘要 |
The present invention provides a magnetic detecting device in which the magnetic field induced in the first direction in a magnetic field inducing layer is detected in a magnetic sensor having a sensitivity axis in the second direction perpendicular to the induction direction, so it is possible to decrease the sensitivity to a magnetic field component in the second direction and in addition, the structure of the device is not easily affected by the strong magnetic field from outside. The magnetic field component in the Z direction is guided to a magnetic field inducing layer (30) and is applied in the same X direction as the direction of the sensitivity axis with respect to the magnetic sensor (20), so the detection output can be obtained. A bridge circuit of a plurality of magnetic sensors (20) are organized, and the output of the magnetic field component in the X direction is configured to produce no output. However, the variation in sensitivity of the X direction could happen when the external magnetic field in the X direction is dragged into the magnetic field inducing layer (30). Thus, the permeability is reduced by deteriorating the soft magnetic properties of a first portion (31) of the magnetic inducing layer (30). |
