The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Magnetic Sensor Using Giant Magneto-Impedance Effect

거대자기임피던스 효과를 이용한 자기 센서

  • Choi, Kyoo-Nam (Dept. of Information and Telecom. Engineering, Incheon National University)
  • 최규남 (인천대학교 정보통신공학과)
  • Received : 2017.09.04
  • Accepted : 2017.12.15
  • Published : 2017.12.31
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Abstract

High sensitivity magnetic sensor having foreign metal detection capability is proposed utilizing giant magneto-impedance effect. Strip sensor showed the increasing output voltage when the external magnetic field was applied along with strip from strip grounding point, although the initial DC voltage varied depending on the pointing direction of strip sensor. Proposed sensor was able to eliminate more than half of background noise using active noise filter to achive high sensitivity, and it showed the capability to detect magnetized foreign metal object independent of ambient electro-magnetic noise and earth magnet. In case of ferrous sphere, the metal detection up to 0.8mm diameter was experimentally demonstrated at 5mm distance from strip sensor.

거대자기임피던스 효과를 이용한 자기센서를 사용하여 자화된 금속이물질을 감지할 수 있는 고감도 금속이물질 감지 센서를 구현하였다. 스트립 형태의 센서는 지자기의 영향으로 스트립의 축방향이 놓인 위치에 따라 초기 직류전압은 다르게 나타났지만 접지점에 연결된 스트립에서 멀어질수록 외부 자계에 대한 출력전압이 증가하며 스트립의 축 방향에는 무관함을 나타내었다. 제안하는 자기센서는 고감도 실현을 위하여 능동잡음필터를 적용하여 기저잡음의 반 이상을 제거할 수 있었고 설치된 주변 환경에서 발생하는 전자기 잡음 및 지자기로 부터의 영향을 받지 않고 자화된 금속 이물질을 검출할 수 있음을 보여주었다. 자화된 철구의 경우 5mm 이격거리에서 지름 0.8mm 까지 감지가 가능함을 실험적으로 보여주었다.

Keywords

References

  1. S. Kim, E. Park, and Y. Kim, "Optimal Design considering Magnetic Saturation Characteristic of Current Transformers for the Overcurrent Warning Circuit," J. of the Korea Institute of Electronic Communication Sciences, vol. 10, no. 7, 2015, pp. 781-786. https://doi.org/10.13067/JKIECS.2015.10.7.781
  2. D. Ryu and T. Choi, "A Development of Smart Sensing Device for Monitoring Abnormal Vibration of Industrial Equipment," J. of the Korea Institute of Electronic Communication Sciences, vol. 12, no. 2, 2017, pp. 361-366. https://doi.org/10.13067/JKIECS.2017.12.2.361
  3. J. Jo, "Performance Comparison between Localized and Non-Localized Brain Wave Monitoring Network Topology in the Medical Hospital Area," J. of the Korea Institute of Electronic Communication Sciences, vol. 11, no. 9, 2016, pp. 917-922. https://doi.org/10.13067/JKIECS.2016.11.9.917
  4. S. Jin and M. Kim, "Implementation of the Pulse Wave Measurement System Using Bipolar Biased Head on Mode of the Hall Sensor," J. of Sensor Science and Tech., vol. 20, no. 5, 2011, pp. 322-328. https://doi.org/10.5369/JSST.2011.20.5.322
  5. H. Choi, "Magnetic Signals Analysis for Vehicle Detection Sensor and Magnetic Field Shape," J. of Korean Institute of Communications and Information Sciences, vol. 40, no. 2, 2015, pp. 349-354. https://doi.org/10.7840/kics.2015.40.2.349
  6. H. Choi and H. Lee, "Design of Magnetoresistance Sensor Module for Vehicle Detection," J. of the Korean Institute of IIIuminating and Electrical Installation Engineers, vol. 25, no. 8, 2011, pp. 99-105. https://doi.org/10.5207/JIEIE.2011.25.8.099
  7. K. Kim and Y. Oh, "Magnetic Sensor Technology and Application using Magnetoresistance Effect," Ceramist, vol. 4, no. 5, 2001, pp. 44-51.
  8. D. Son, "Construction of Feed-back Type Flux-gate Magnetometer," J. of Korean Magnetics Society, vol. 22, no. 2, 2012, pp. 45-48. https://doi.org/10.4283/JKMS.2012.22.2.045
  9. K. Shin, "Operation Frequency Dependence of Output of Orthogonal Fluxgate Sensor Fabricated with Ferrite Core," J. of Korean Magnetics Society, vol. 22, no. 6, 2012, pp. 200-203. https://doi.org/10.4283/JKMS.2012.22.6.200
  10. S. Part, C. Kim, K. Ryu, and D. Kim, "Study on the Linear Magnetic Field Sensor Using $\Delta$ E in Amorphous Ribbon," J. of Korean Magnetics Society, vol. 23, no. 6, 2013, pp. 205-208. https://doi.org/10.4283/JKMS.2013.23.6.205
  11. M. Hwang and B. Kim, "Advanced Magnetic Devices using Microwires," J. of Society for the Int. Gifted in Science, vol. 1, no. 1, 2007, pp. 71-84.
  12. S. Yoon, G. Kim, S. Lee, and C. Kim, "Development of Magnetoimpedance Sensor Utilizing Soft Magnetic Amorphous Ribbon with Exchange Coupling and Application to Nondestructive Testing," J. of Korean Society for Nondestructive Testing, vol. 28, no. 5, 2008, pp. 401-406.
  13. J. Barandiaran, A. Garcia-Arribas and D. Cos, "Transition from quasistatic to ferromagnetic resonance regime in giant magnetoimpedance," J. of Appl. Physics, vol. 99, no. 103904, 2006, pp. 1-4.
  14. S. Kisseleff, W. Gerstacker, Z. Sun, and I. Akyildiz, "On the Throughput of Wireless Underground Sensor Networks using Magneto-Inductive Waveguides," Global Comm. Conf. - Ad Hoc Sensor Networking Symp., Atlanta, U.S.A., Dec., 2013, pp. 322-328.
  15. M. Vazquez, J. Garcia-Beneytez and J. Sinnecker, "Magneto-impedance effect in high permeability NiFeMo permalloy wires," J. of Appl. Physics, vol. 83, no. 11, 1998, pp. 6578-6580. https://doi.org/10.1063/1.367606
  16. K. Lenz, E. Kosubek, K. Baberschke, and H. Wende, "Magnetic properties of Fe3Si/GaAs(001) hybrid structures," Phy. Rev., vol. 72, no. 144411, 2005, pp. 1-5.
  17. K. Choi, "Characteristics of Metal Sensor using Variable Frequency," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 2, 2014, pp. 161-166. https://doi.org/10.13067/JKIECS.2014.9.2.161
  18. K. Choi, "Two Channel Metal Detector using Two Perpendicular Antennas," J. of Sensors, vol. 2014, no. 412621, 2014, pp. 1-11.
  19. F. Fiorillo, G. Bertotti, C. Appino, and M. Pasquale, Soft Magnetic Materials. : Wiley Encyclopedia of Electrical and Electronics Eng., 2016, pp. 1-42.
  20. P. Sarkar, J. Vcelak, R. K. Roy, A. Panda, A. Mitra, and P. Ripka, "Co-based amorphous material for giant magneto-impedance and fluxgate sensing cores," 2015 IEEE Int. Magnetics Conf. (INTERMAG), Beijing, China, no. HR-04, May, 2015.
  21. D. Son, "Construction of Feed-back Type Flux-gate Magnetometer," J. of Korean Magnetics Society, vol. 22, no. 2, 2012, pp. 45-48. https://doi.org/10.4283/JKMS.2012.22.2.045
  22. K. Choi, "Two-Channel Metal Detector Using Two Perpendicular Antennas," J. of Sensors, vol. 2014, no. 412621, 2014, pp. 1-11.