In this paper we present an Earth magnetic field measurement system and an automated acquisition setup to characterize it. The measurement system consists of a fluxgate sensor and an integrated front-end circuit, both realized in CMOS technology. The couple of orthogonal axes of the sensor makes the system suitable for realizing an electronic compass device. Indeed, we can measure not only the amplitude of the Earth magnetic field (whose full-scale value is of the order of 60 μT), but also its direction. The complete measurement system achieves a maximum angular error of 1.5° in the measurement of the Earth magnetic field direction. Furthermore, an acquisition setup was developed to evaluate the measurement system performance. It consists of a precision mechanical plastic structure, in tower form, a microcontroller-based interface circuit, that provides a digital output through an RS232 serial interface, a PC software suitably developed to post-process the data from the acquisition system and a couple of Helmholtz coils to evaluate the linearity of the system. This setup allows us to perform a completely automated and numerically controlled characterization of the measurement system. © 2009 Elsevier Ltd. All rights reserved.

Baschirotto, A., Dallago, E., Ferri, M., Malcovati, P., Rossini, A., Venchi, G. (2010). A 2D Micro-Fluxgate Earth Magnetic Field Measurement Systems with Fully Automated Acquisition Setup. MEASUREMENT, 43(1), 46-53 [10.1016/J.MEASUREMENT.2009.06.007].

A 2D Micro-Fluxgate Earth Magnetic Field Measurement Systems with Fully Automated Acquisition Setup

BASCHIROTTO, ANDREA;
2010

Abstract

In this paper we present an Earth magnetic field measurement system and an automated acquisition setup to characterize it. The measurement system consists of a fluxgate sensor and an integrated front-end circuit, both realized in CMOS technology. The couple of orthogonal axes of the sensor makes the system suitable for realizing an electronic compass device. Indeed, we can measure not only the amplitude of the Earth magnetic field (whose full-scale value is of the order of 60 μT), but also its direction. The complete measurement system achieves a maximum angular error of 1.5° in the measurement of the Earth magnetic field direction. Furthermore, an acquisition setup was developed to evaluate the measurement system performance. It consists of a precision mechanical plastic structure, in tower form, a microcontroller-based interface circuit, that provides a digital output through an RS232 serial interface, a PC software suitably developed to post-process the data from the acquisition system and a couple of Helmholtz coils to evaluate the linearity of the system. This setup allows us to perform a completely automated and numerically controlled characterization of the measurement system. © 2009 Elsevier Ltd. All rights reserved.
Articolo in rivista - Articolo scientifico
magnetic field sensor
English
2010
43
1
46
53
none
Baschirotto, A., Dallago, E., Ferri, M., Malcovati, P., Rossini, A., Venchi, G. (2010). A 2D Micro-Fluxgate Earth Magnetic Field Measurement Systems with Fully Automated Acquisition Setup. MEASUREMENT, 43(1), 46-53 [10.1016/J.MEASUREMENT.2009.06.007].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/36803
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