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

Authors

  • A A Velásquez Universidad EAFIT
  • Juliana Baena Rodríguez Universidad EAFIT
  • Yhefferson Fernando Gutiérrez Loaiza Universidad EAFIT

DOI:

https://doi.org/10.17230/ingciencia.11.21.5

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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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.

References

S. A. Macintyre, “Magnetic field measurement,” CRC Press LLC, p. 18, 1999. [Online]. Available: http://engineering.dartmouth.edu/dartmag/docs/macintyre.pdf 249

“Infineon: Hall sensors in automotive applications.” [Online]. Available: http://goo.gl/913GzC 249

D. J. Hall, “Robotic sensing devices,” Carnegie-MellonUniversity, p. 46, 1984. [Online]. Available: http://goo.gl/3lIgi9 249

W. Burgei, M. J. Pechan, and H. Jaeger, “A simple vibrating sample magnetometer for use in a materials physics course,” American Journal of Physics, vol. 71, no. 8, pp. 825–828, 2003. [Online]. Available: http://scitation.aip.org/content/aapt/journal/ajp/71/8/10.1119/1.1572149 249

M. A. Peréz Garcia, J. C. Alvaréz Antón, J. C. Campo Rodríguez, F. J. Ferrero Martín, and G. J. Grillo Ortega, Instrumentación Electrónica. Thompson, 2005. 250, 251

R. G. Jackson, Novel sensors and sensing. CRC Press, 2004. 252

“Toshiba: Ths119 gaas ion implanted planar type hall sensor.” [Online]. PACS: 84.30.-r, 85.40.-e, 85.75.-dvailable:http://exp.as2.yamanashi.ac.jp/openlab/apparatus/manual/THS119.pdf 253

“Burr brown products: Ina129 precision, low power instrumentation amplifiers.”

[Online]. Available: http://www.ti.com/lit/ds/symlink/ina128.pdf 253

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Published

2015-01-01

Issue

Vol. 11 No. 21 (2015)

Section

Articles

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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

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