DESIGN OF A HIGH-SENSITIVITY DEVICE FOR DETECTING WEAK MAGNETIC FIELDS
An anti-serial fluxgate sensor configuration is proposed in this report. The design comprises two identical bilayer-rod fluxgate sensors connected anti-serially in a straight line. Each bilayer-rod sensor is constructed of an excitation coil and a pick-up coil wrapped around a core. The core materia...
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| Autors principals: | , , , , |
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| Format: | Article |
| Idioma: | English |
| Publicat: |
Trường Đại học Đà Lạt
2023
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| Accés en línia: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1042 https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/114493 |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Sumari: | An anti-serial fluxgate sensor configuration is proposed in this report. The design comprises two identical bilayer-rod fluxgate sensors connected anti-serially in a straight line. Each bilayer-rod sensor is constructed of an excitation coil and a pick-up coil wrapped around a core. The core material consists of Metglas ribbon, an amorphous alloy with high permeability, negligible hysteresis, and a high saturated magnetic field. The core is cut into a bar shape and uses double layers to enhance modulated flux density. A high sensitivity of 10 mV/Oe (with excitation of 45 kHz and 250 mA) is obtained experimentally with low noise of 1´10-5 Oe/Ö Hz at 1 Hz. In measurements of weak magnetic fields, the azimuth response indicates its vector feature. The proposed design is suitable for electronic compass and displacement applications. |
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