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<p>This study proposes a method to improve the electromagnetic exposure evaluation procedures for fixed large-scale human-proximity devices, referred to as Electronic Article Surveillance (EAS) systems. The conventional evaluation approach involves measuring magnetic field values at 45 points and calculating the average, which is inefficient in terms of time and cost. To address this issue, a method to reduce the number of measurement points was proposed. Magnetic field values as a function of distance were analyzed for an ideal line current source. Furthermore, magnetic field distributions for the two representative EAS methods, Acousto-Magnetic (AM) and Radio-Frequency (RF), were analyzed through simulations and measurements. Based on these findings, an optimized evaluation method is suggested, which involves measuring three representative points located at 85 cm, 115 cm, and 145 cm heights at a 30 cm distance from the antenna center to derive the average value.</p>

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A Study on Efficient Evaluation Methods for Electromagnetic Exposure to the Human Body from Electronic Article Surveillance Systems

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Jae Hee Kim,
  • Hyeon-Chang Seong,
  • Je-Heon Lee,
  • Kihwea Kim,
  • Byeonggyu Yu,
  • Jinkyu Bang

摘要

This study proposes a method to improve the electromagnetic exposure evaluation procedures for fixed large-scale human-proximity devices, referred to as Electronic Article Surveillance (EAS) systems. The conventional evaluation approach involves measuring magnetic field values at 45 points and calculating the average, which is inefficient in terms of time and cost. To address this issue, a method to reduce the number of measurement points was proposed. Magnetic field values as a function of distance were analyzed for an ideal line current source. Furthermore, magnetic field distributions for the two representative EAS methods, Acousto-Magnetic (AM) and Radio-Frequency (RF), were analyzed through simulations and measurements. Based on these findings, an optimized evaluation method is suggested, which involves measuring three representative points located at 85 cm, 115 cm, and 145 cm heights at a 30 cm distance from the antenna center to derive the average value.