Abstract
A novel fluxgate sensor with a single ferromagnetic core capable of measurement in three principal axes is presented. The sensor manufacturing process and internal coil structure is explained and its excitation is modelled using FEM. The sensor was implemented utilizing multilayer printed circuit board copper routes and electroplated through holes to create appropriate coils. The sensor magnetic core was electroplated on the printed circuit board surface and through holes using Permalloy (Ni 80Fe 20). The core material properties were identified using a PCB based transformer device showing relative permeability of 2300 at 50 kHz. Sensor excitation effects are investigated with special emphasis on sensor axis orthogonality revealing a significant sensitivity axis tilt due to excitation means. The sensor is characterised in terms of sensitivity, linearity and noise. Measurements show a significant influence of core material anisotropy on sensitivity (90 V/T in x axis vs. 112 V/T in y axis). The z-axis sensitivity (198 V/T) is significantly higher due to the different core geometry in corresponding direction and different number of pick-up coil turns.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
