| Title |
Design of MSR for Magnetic Field Shielding of Low Frequency |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2010.24.6.154 |
| Keywords |
Magnetic Shielding ; Helmholtz Coil ; Geomagnetic Field ; Permalloy ; Eddy Current ; AC/DC Shielding |
| Abstract |
In this paper, the magnetically shielded room for low magnetic field shielding is designed and measured by fabricated. The size of magnetically shielded room was 3.0[m](W)×3.0[m](L)×3.0[m](H) to enter the industrial measuring instruments and analyzed DC and AC shielding characteristics of magnetic materials with a high permeability and AC shielding characteristics by eddy current of conductive materials. As a results, shielded room dimensions were obtained. To verify the analysis results, magnetically shielded room is fabricated and the calculated results are compared with the measured results. The Measured results show good agreement with calculated results. According to measurements, 5 times of 0.1[㎐] and 86 times of 60[㎐] is achieved at low frequency. The fabricated shielding room can be used as the magnetically shielding room for low magnetic field shielding. |