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Spatial angular positioning device with three-dimensional magnetoelectric sensors.

D T Huong Giang1, P A Duc, N T Ngoc

  • 1Department of Nano Magnetic Materials and Devices, Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, Vietnam National University, Hanoi E3 Building, 144 Xuan Thuy Road, Cau Giay, Hanoi, Vietnam. giangdth@vnu.edu.vn

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Researchers developed a novel 3D geomagnetic device using magnetoelectric sensors to precisely measure spatial orientation. This simple, low-cost sensor accurately determines azimuth and pitch angles for mobile antenna positioning.

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Area of Science:

  • Geophysics
  • Materials Science
  • Sensor Technology

Background:

  • Accurate spatial orientation sensing is crucial for mobile communication systems.
  • Existing geomagnetic sensors may lack the required precision or simplicity for certain applications.

Purpose of the Study:

  • To develop a novel, simple, and low-cost three-dimensional geomagnetic device.
  • To enable precise sensing of spatial azimuth and pitch positions.
  • To facilitate automatic orientation control for mobile transceiver antennas.

Main Methods:

  • Utilized three one-dimensional magnetoelectric sensors arranged along orthogonal axes.
  • Integrated piezoelectric transducer plates with Ni-based Metglas ribbons.
  • Developed a device for simultaneous detection of all three orthogonal geomagnetic field components.

Main Results:

  • Achieved simultaneous detection of the terrestrial magnetic field's orthogonal components.
  • Output signals directly correlate to azimuth and pitch angles (sine/cosine functions).
  • Demonstrated high resolution (<10(-4) Oe) and angle precision (±0.1°).

Conclusions:

  • The developed device offers a simple and cost-effective solution for geomagnetic field sensing.
  • It accurately determines spatial azimuth and pitch, crucial for antenna orientation.
  • The technology shows promise for automatic orientation control of mobile transceiver antennas relative to geostationary satellites.