Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 562, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2022.169769
Keywords
Non-spiral coils; Magnetic field strength; Ansys Maxwell's software; Earths field detection
Funding
- Centre for Advanced Studies in Electronics Science and Technology
- IoE RC4 by UoH, MHRD, Govt of India
- TIDE facility centre for fabrication and testing of sensor at University of Hyderabad
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This paper presents the performance characteristics of a non-spiral planar excitation and pick-up micro-coils fluxgate sensor with a NiFe magnetic rod core. The sensor's performance is simulated using Ansys Maxwell's software. A simple and cost-effective fabrication method is implemented using Printed Circuit Board technology. The sensor demonstrates earth magnetic field strength detection.
This paper presents performance characteristics of non-spiral planar excitation and pick-up micro-coils implemented for a fluxgate sensor with a NiFe magnetic rod core. Using Ansys Maxwell's software, the sensor performance is simulated. Magnetic flux [phi], magnetic flux density [B], magnetic field intensity [H], coupling coefficient, inductance [L] and magnetic energy [E] of the coils are simulated for a set of excitation currents. A simple, cost-effective and less complex fabrication method is implemented to fabricate the sensor using Printed Circuit Board (PCB) technology. Non-spiral 5-turn fluxgate sensor of dimensions 50mmx 20mmx 0.5 mm [length x breadth x width] is fabricated and analysed at an excitation current with a fundamental frequency of 500 kHz. Two excitation coils and one pick-up coil are deposited on a horizontal PCB plane and NiFe rod type material is placed on it, which acts as the core. Synthetic glue is spread on the coils; it acts a insulator between the coils and the core. Copper is used for deposition of the both the excitation and pick-up coils. On applying different excitation current, the frequency response of the non-spiral fluxgate sensor is plotted. The sensor demonstrated earth magnetic field strength detection (similar to 25 mu T).
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