MAGNETIC SENSOR
The invention provides a magnetic sensor with which it is possible to detect a magnetic field by closed-loop control even when the magnetic field to be measured is faint. The present invention is provided with: magnetic body layers (41, 42) that face each other across a magnetic gap (G1); a magnetis...
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| Main Author | |
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| Format | Patent |
| Language | Chinese English |
| Published |
27.11.2020
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| Subjects | |
| Online Access | Get full text |
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| Summary: | The invention provides a magnetic sensor with which it is possible to detect a magnetic field by closed-loop control even when the magnetic field to be measured is faint. The present invention is provided with: magnetic body layers (41, 42) that face each other across a magnetic gap (G1); a magnetism-sensitive element (R1) disposed on a magnetic path formed by the magnetic gap (G1); and a compensation coil (60) that generates a cancelling magnetic flux for negating a magnetic flux applied to the magnetism-sensitive element (R1). According to the present invention, because the magnetic flux flowing through the magnetic body layers (41, 42), which function as yokes, is applied to the magnetism-sensitive element (R1), it is possible to detect a magnetic field to be measured even when the magnetic field to be measured is faint. Moreover, because the compensation coil (60) for negating the magnetic flux is provided, it is possible to perform closed-loop control.
本发明提供一种即使作为测量对象的磁场微弱，也能够通过闭环控制检测磁场的磁传感器。本发明的磁传感器具备：磁 |
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| Bibliography: | Application Number: CN201980023034 |