DOI QR코드

DOI QR Code

Time-Coded GMI Magnetic Field Sensor

  • 발행 : 2009.09.30

초록

A time-coded giant magnetoimpedance (GMI) magnetic field sensor was investigated and designed. The successfully constructed and tested laboratory model demonstrated a sensitivity of 5 ${\mu}s/{\mu}T$ in the field range of $\pm200{\mu}T$. The sensing element in the form of an amorphous thin wire, 100 mm in diameter $\times50$ mm long, was fit into a small field modulation coil of 60 mm length. At a magnetic field modulation in the range of hundreds of Hz, the change in time interval of two adjacent GMI voltage peaks was linearly related to the external magnetic field to be measured. This mechanism improved the sensor linearity to better than 0.3% in the measuring range of $\pm200{\mu}T$.

키워드

참고문헌

  1. K. Mohri, Mater. Sci. Eng. A185, 141 (1994) https://doi.org/10.1016/0921-5093(94)90937-7
  2. L. V. Panina, K. Mohri, K. Bushida, and M. Noda, J. Appl. Phys. 76, 6198 (1994) https://doi.org/10.1063/1.358310
  3. K. Mohri, T. Uchiyama, L.P. Shen, C.M. Cai, L.V. Panina, Sensor and Actuators A 91, 85 (2001) https://doi.org/10.1016/S0924-4247(01)00620-3
  4. G. V. Kurlyandskays, A. Garcia-Arribas, and J. M. Barandiaran, Sens. Acta. A 106, 234-9 (2003) https://doi.org/10.1016/S0924-4247(03)00174-2
  5. Horia Chiriac, Mihai Tibu, Anca-Eugenia Moga, and Dumitru D. Herea, J. Mag. Mag. Mat. 293, 671 (2005) https://doi.org/10.1016/j.jmmm.2005.02.043
  6. Yoshinobu Honkura, J. Mag. Mag. Mat. 249, 375 (2002) https://doi.org/10.1016/S0304-8853(02)00561-9
  7. F. Alves, and A. D. Bensalah, J. Mag. Mag. Mat. 181, 194 (2007)
  8. P. Kollu, D. Y. Kim, and C. G. Kim, J. Magnetics 12, 35 (2007) https://doi.org/10.4283/JMAG.2007.12.1.035
  9. J. P. Sinnecker, P. Tiberto, G. V. Kurlyandskaia, E. H. C. P. Sinnecker, M. Va´zquez, and A. Hernando, J. Appl. Phys. 84, 5814 (1998) https://doi.org/10.1063/1.368848
  10. K. Mohri, T. Uchiyama, L. P. Shen, C. M. Cai, L. V. Panin, J. Mag. Mag. Mat. 249, 351 (2002) https://doi.org/10.1016/S0304-8853(02)00558-9
  11. Walter Heinecke, IEEE Trans. Instr. & Meas. 27, 402 (1978) https://doi.org/10.1109/TIM.1978.4314723