Magnetic sensing device and preparation process thereof
A preparation process and magnetic sensing technology, which is applied in the direction of the size/direction of the magnetic field, can solve the problems of sensitivity and precision to be further improved, poor sensing performance of the device, etc., and achieve the effect of improving the sensing ability and sensitivity, and increasing the sensing ability
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[0067] Example one
[0068] See Figure 8 The present invention discloses a magnetic sensor device, the device includes a third-direction magnetic sensor component (Z-axis sensor), and the third-direction magnetic sensor component includes: a substrate 1, a magnetic conductive unit, and an induction unit. A groove 2 is opened on the surface of the substrate 1, and the main part of the magnetic conductive unit is arranged in the groove 2.
[0069] Specifically, the magnetic permeable unit includes a first magnetic permeable subunit 41 and a second magnetic permeable subunit 42. The main body of the first magnetic permeable subunit 41 is arranged in the groove 2 and partially exposed from the groove 2 to The surface of the substrate 1; the main part of the second magnetic permeable subunit 42 is arranged in the groove 2, and a first dielectric material is provided between the second permeable subunit 42 and the first permeable subunit 41. The magnetic permeable unit is used to sens...
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[0091] Example two
[0092] The difference between this embodiment and the first embodiment is that, in this embodiment, the magnetic permeable unit includes a number of permeable subunits (such as three or more), and the first and second permeable subunits serve as Two of the magnetic sub-units. The main part of each magnetic permeable subunit is arranged in the groove, and the angle between the main part of the permeable subunit and the plane of the base is 45°-90°; the magnetic subunits are separated by a dielectric material.
[0093] The number of sensing subunits in the sensing unit is the same as the number of magnetic permeable subunits. Each permeable subunit senses the magnetic signal in the third direction, and outputs the magnetic signal to the corresponding inductive subunit for measurement; each inductive subunit measures the magnetic field in the first direction or / and the second direction, combined with the corresponding permeable subunit The magnetic signal output...
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