Design and Construction of an Embedded Digital Teslameter for the Magnetic Characterization of Materials

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A A Velásquez
Universidad EAFIT

Juliana Baena Rodríguez
Universidad EAFIT

Yhefferson Fernando Gutiérrez Loaiza
Universidad EAFIT

Keywords

teslameter, Hall effect transducer, embedded system

Abstract

We present the design, construction and validation of an embedded digital teslameter, intended for use in experiments of magnetic materials characterization by inductive and static methods. The teslameter consists of a planar type Hall effect transducer THS119, with differential output and adjustable measuring range, an INA129P instrumentation amplifier with adjustable gain, a microcontroller PIC16F873A with ADC converter of 10-bits for digital processing, data storage and data transfer to the computer via serial port; and a liquid crystal display to visualize the measurements. The system is adaptable to magnetic field transducers with single or differential output and with different measuring ranges; is sensitive to changes in the intensity and the polarity of the applied magnetic field and has an effective sensitivity of 5.0 mV/mT and uncertainty of 0.5−3T for the THS119 Hall effect transducer. The prototype teslameter was compared with a commercial teslameter PHYWE 13610.90.

PACS: 84.30.-r, 85.40.-e, 85.75.-d

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References

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Published
Jan 1, 2015
DOI https://doi.org/10.17230/ingciencia.11.21.5

Article Details

How to Cite
Velásquez, A. A., Baena Rodríguez, J., & Gutiérrez Loaiza, Y. F. (2015). Design and Construction of an Embedded Digital Teslameter for the Magnetic Characterization of Materials. Ingeniería Y Ciencia, 11(21), 99–113. https://doi.org/10.17230/ingciencia.11.21.5
Issue
Vol. 11 No. 21 (2015)
Section
Articles
Supporting Agencies
Author Biography

Juliana Baena Rodríguez, Universidad EAFIT

Juliana Baena Rodríguez es estudiante de Ingeniería Física de la Universidad EAFIT. Actualmente, curso el período de práctica en investigación en el laboratorio de Instrumentación y espectroscopía, de la misma universidad (Departamento de Ciencias Básicas). Soy miembro activo del grupo de electromagnetismo aplicado. Mis intereses investigativos estan centrados en el área de materiales magnéticos, instrumentación científica y electrónica, espectroscopía y magnetometría.

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