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International standardization of safety evaluation for millimeter wave exposure using large-scale accurate computation

Research Project

Project/Area Number 17K06288
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionKitami Institute of Technology

Principal Investigator

KASHIWA Tatsuya  北見工業大学, 工学部, 教授 (30211155)

Co-Investigator(Kenkyū-buntansha) 田口 健治  北見工業大学, 工学部, 准教授 (60435485)
平田 晃正  名古屋工業大学, 工学(系)研究科(研究院), 教授 (00335374)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords人体電磁ばく露 / ドシメトリ評価 / ミリ波 / 国際標準化 / 安全性評価 / スーパーコンピュータ / 人体ばく露 / 皮膚のモデル化 / ミリ波帯 / 高解像度人体ボクセルモデル / 並列型ベクトルスーパーコンピュータ / 高解像度化 / 人体数値ボクセルモデル / 大規模解析
Outline of Final Research Achievements

In the current international guidelines/standards for human protection from radio waves, the whole-body averaged specific absorption rate (SAR) is used as a metric. The upper frequency of the whole-body average SAR will be revised from 10 GHz to 300 GHz in the revision of ICNIRP guidelines. However, the rationale for this exposure restriction is insufficient above 6-10 GHz due to the reliability of the human modeling. The skin modeling may become important because most electromagnetic power is absorbed in the skin layer. In this study, we fine-tuned the numerical human models into high resolution models with arbitrary skin thickness by mediating polygon model. Additionally, we showed the effect of skin thickness on the whole body average SAR.

Academic Significance and Societal Importance of the Research Achievements

人体電磁ばく露に対する安全性評価では、現在、国際ガイドラインが改定中であり,十分なデータがないミリ波である10GHzから300GHzのデータが必要である.実験的アプローチは社会的に難しく、シミュレーションによる安全性評価が必須である。この周波数帯では皮膚厚みの影響が大きく、皮膚厚みの影響を調べる事が重要である。本研究では主にこの皮膚厚みの人体ばく露への影響について調べ有意義な結果を得た。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (14 results)

All 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Book (2 results)

  • [Int'l Joint Research] Aalto University(フィンランド)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] South China Agricultural University(中国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Risk Evaluation of Heat Stroke with Multiphysics Computation and its Application2018

    • Author(s)
      平田晃正, 長谷川一馬, 小寺紗千子, Ilkka Laakso, 江川隆輔, 堀江祐圭, 矢﨑菜名子, 田口健治, 柏達也
    • Journal Title

      IEEJ Transactions on Fundamentals and Materials

      Volume: 138 Issue: 6 Pages: 288-294

    • DOI

      10.1541/ieejfms.138.288

    • NAID

      130007382619

    • ISSN
      0385-4205, 1347-5533
    • Year and Date
      2018-06-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] サブグリッド法に基づくSPFD解析による一様磁界ばく露解析2018

    • Author(s)
      中西優大, 伊藤孝弘, 平田晃正, 田口健治, 柏達也
    • Journal Title

      電子情報通信学会論文誌C

      Volume: vol. J101-C, no. 5 Pages: 256-257

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Relationship of External Field Strength with Local and Whole-body Averaged Specific Absorption Rates in Anatomical Human Models2018

    • Author(s)
      K. Taguchi, I. Laakso, K. Aga, A. Hirata, Y. Diao, J. Chakarothai, T. Kashiwa
    • Journal Title

      IEEE Access

      Volume: vol. 6 Pages: 70186-70196

    • DOI

      10.1109/access.2018.2880905

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Risk Management of Heatstroke Based on Fast Computation of Temperature and Water Loss Using Weather Data for Exposure to Ambient Heat and Solar Radiation2018

    • Author(s)
      Kojima Kazuya、Hirata Akimasa、Hasegawa Kazuma、Kodera Sachiko、Laakso Ilkka、Sasaki Daisuke、Yamashita Takeshi、Egawa Ryusuke、Horie Yuka、Yazaki Nanako、Kowata Saeri、Taguchi Kenji、Kashiwa Tatsuya
    • Journal Title

      IEEE Access

      Volume: 6 Pages: 3774-3785

    • DOI

      10.1109/access.2018.2791962

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] FDTD法によるミリ波帯人体全身SAR評価に関する基礎検討2019

    • Author(s)
      小寺紗千子
    • Organizer
      電子情報通信学会 エレクトロニクスシミュレーション研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development on High Resolution Human Voxel Model for High Frequency Exposure Analysis2018

    • Author(s)
      K. Taguchi, T. Kashiwa, A. Hirata
    • Organizer
      PIERS
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] サブグリッド法と後処理によるSPFD解析の高速化に関する検討2018

    • Author(s)
      中西優大
    • Organizer
      電子情報通信学会 エレクトロニクスシミュレーション研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 高周波ばく露解析のための高解像度人体ボクセルモデルの構築2018

    • Author(s)
      田口健治
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 人体ボクセルモデルの高解像度化法に関する一検討2017

    • Author(s)
      田口健治
    • Organizer
      電子情報通信学会ソサエティ大会
    • Related Report
      2017 Research-status Report
  • [Presentation] サブグリッド法に基づくSPFD解析の高速化に関する検討2017

    • Author(s)
      中西優大
    • Organizer
      電子情報通信学会 電磁界理論研究会
    • Related Report
      2017 Research-status Report
  • [Book] Computational Anatomical Animal Models2019

    • Author(s)
      K. Wake, A. Hirata, K. Taguchi, and etc.
    • Total Pages
      400
    • Publisher
      OP Publishing Ltd.
    • ISBN
      9780750313452
    • Related Report
      2018 Research-status Report
  • [Book] Antennas for Small Mobile Terminals2018

    • Author(s)
      T. Kashiwa, K. Taguchi, and etc.
    • Total Pages
      288
    • Publisher
      ARTECH HOUSE
    • ISBN
      9781630810955
    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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