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Development of functional periodic structures with frequency selective characteristic and its application to medical electromagnetic environments

Research Project

Project/Area Number 20K04623
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionOita University

Principal Investigator

Kudou Takato  大分大学, 理工学部, 教授 (60225159)

Co-Investigator(Kenkyū-buntansha) 花田 英輔  佐賀大学, 理工学部, 教授 (90244095)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords周波数選択性 / 電磁波遮へい / 周期構造 / シミュレーション / 医療電磁環境 / 周波数選択 / 電磁環境 / 医工連携
Outline of Research at the Start

医療電磁環境の改善(必要な無線通信を確保し,かつ,医療機器と無線通信電波との電磁干渉による診療への悪影響や無線傍受による情報漏えいを防止する),採光性などの確保による患者アメニティの向上,電磁波工学と医療管理学・医療社会学の融合による医工連携の新分野開拓などの目的のため,FSS(Frequency Selective Surface)と非金属周期構造(フォトニック結晶構造など)を組み合わせた,マイクロ波帯における周波数(帯域)選択的電磁波遮へいの実現に向けた研究を遂行する(3次元シミュレーションに基づく数値解析,遮へい構造体の試作品作製・特性評価,医療現場における活用指針の提示など)。

Outline of Final Research Achievements

We researched band-selective electromagnetic shielding in view of keeping required wireless communications and intercepting undesired electromagnetic waves in medical institutions. We noticed band-gap characteristics of DPS (Dielectric Periodic Structure) and FSS (Frequency Selective Surface), and performed three-dimensional computer simulations concerned with the shielding effect of the structure that combines them in microwave band. We analyzed frequency and spatial characteristics for some kinds of structure parameters and showed two frequency-bands shielding is simultaneously possible. We also identified current problems and proposed improvement guidelines in medical electromagnetic environments regarding the specific use of shielding materials. We included the production of a prototype of the structure and an experiment to evaluate its characteristics in the initial plan, but these were not possible due to COVID-19 pandemic. These are future issues.

Academic Significance and Societal Importance of the Research Achievements

誘電体周期構造とFSS(周波数選択板)を組み合わせた構造体をマイクロ波帯の帯域的遮へい用素材として利用し,それを医療電磁環境に応用するという研究は過去に無かった。本研究において,この構造体により複数の周波数帯域を同時に遮へい可能であることが示され,かつ,構造体の実現に向けての基礎データを取得できたことは,大きな学術的意義をもつ。この成果はパーティション,壁材,採光窓など,建築材料の設計にも寄与すると考えられる。また,電磁環境に起因する医療機器への悪影響防止,医療情報のセキュリティ強化など,在宅を含む安全・安心な医療電磁環境の構築を促進する観点から,社会的にも意義のある研究成果である。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (38 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (32 results) (of which Int'l Joint Research: 12 results,  Invited: 3 results) Remarks (3 results)

  • [Journal Article] How inappropriate cabling prevents hospitals from becoming "smart" and future communication system management concerns2024

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Journal Title

      Journal of Biotechnology and Biomedicine

      Volume: 7 Pages: 149-152

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Considerations for the effective management of LANs in hospital buildings2024

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Journal Title

      Building Engineering

      Volume: 2 Pages: 1-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Guidelines for medical telemetry system2022

    • Author(s)
      T. Endo, T. Kano, and E. Hanada
    • Journal Title

      IFHE Digest 2022

      Volume: - Pages: 31-33

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] FSSと誘電体周期構造を組み合わせた構造体による2周波帯域の電磁波遮へい2024

    • Author(s)
      柳井友徳,工藤孝人
    • Organizer
      日本生体医工学会令和5年度第4回医療・福祉における電磁環境研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Wireless communication system use in medical hospitals and management of the electromagnetic environment2024

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Organizer
      EMC Japan/APEMC Okinawa 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Two-bands electromagnetic wave shielding using a dielectric periodic structure and FSSs2024

    • Author(s)
      Takato Kudou and Eisuke Hanada
    • Organizer
      EMC Japan/APEMC Okinawa 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A new way of approaching electromagnetic disturbance with/from medical devices: wireless communication failures2023

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Organizer
      URSI GASS 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Java3DとFDTD法を用いた電磁波シミュレータによるリニアアレイアンテナの放射解析2023

    • Author(s)
      吉田匡吾,工藤孝人
    • Organizer
      2023年度(第31回)電子情報通信学会九州支部学生会講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Java3DとFDTD法を用いたオフセットパラボラアンテナからの放射シミュレーション2023

    • Author(s)
      矢尻凜太郎,工藤孝人
    • Organizer
      2023年度(第76回)電気・情報関係学会九州支部連合大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 交差型誘電体周期構造と正方環型FSSを組み合わせた2周波帯域の電磁波遮へい2023

    • Author(s)
      柳井友徳,工藤孝人
    • Organizer
      2023年度(第76回)電気・情報関係学会九州支部連合大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 電磁パルス波の後方散乱応答を用いた誘電体角柱の空洞率の簡易推定2023

    • Author(s)
      工藤孝人
    • Organizer
      2023年度(第76回)電気・情報関係学会九州支部連合大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Architectural problems related to wireless communication in hospitals and measures to ensure stable operation2023

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Organizer
      2023 International Conference on Emerging Technologies for Communications
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 今後の病院ネットワークに発生しうる課題2023

    • Author(s)
      花田英輔,工藤孝人
    • Organizer
      電子情報通信学会ヘルスケア・医療情報通信技術研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] 2種類の正方環型FSSを用いた帯域選択的電磁波遮へいに関する3次元数値解析2023

    • Author(s)
      柳井友徳,工藤孝人
    • Organizer
      日本生体医工学会令和4年度第3回医療・福祉における電磁環境研究会(オンライン)
    • Related Report
      2022 Research-status Report
  • [Presentation] 医療現場のネットワークに今後発生しうる課題とその対策2022

    • Author(s)
      花田英輔,工藤孝人
    • Organizer
      2022年電子情報通信学会通信ソサイエティ大会(オンライン)
    • Related Report
      2022 Research-status Report
  • [Presentation] Java3DとFDTD法を用いた電磁波シミュレータによるマジックTの動作解析2022

    • Author(s)
      矢尻凜太郎,工藤孝人
    • Organizer
      2022年度(第30回)電子情報通信学会九州支部学生会講演会(オンライン)
    • Related Report
      2022 Research-status Report
  • [Presentation] 2層の正方環型FSSを用いた帯域選択的電磁波遮へいに関する3次元数値解析2022

    • Author(s)
      柳井友徳,工藤孝人
    • Organizer
      2022年度(第30回)電子情報通信学会九州支部学生会講演会(オンライン)
    • Related Report
      2022 Research-status Report
  • [Presentation] 医療現場における無線LAN活用上の今後の課題と対策2022

    • Author(s)
      花田英輔,工藤孝人
    • Organizer
      第42回医療情報学連合大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Future considerations for the management of hospital LANs2022

    • Author(s)
      Eisuke Hanada and Takato Kudou
    • Organizer
      2022 International Conference on Emerging Technologies for Communications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 病院のスマート化を阻む不適切配線とあるべき管理2022

    • Author(s)
      花田英輔,工藤孝人
    • Organizer
      電子情報通信学会ヘルスケア・医療情報通信技術研究会(オンライン開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] FDTD法とJava3Dを用いた電磁放射シミュレーション2021

    • Author(s)
      工藤孝人
    • Organizer
      2021年度(第74回)電気・情報関係学会九州支部連合大会(オンライン開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] Architectural design considerations essential to realizing the infrastructure necessary for a “smart” hospital2021

    • Author(s)
      E. Hanada
    • Organizer
      2nd International Conference on Infrastructure and Construction(オンライン開催)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Importance of wired/wireless infrastructure in clinical settings -from building construction to management-2021

    • Author(s)
      E. Hanada
    • Organizer
      ESMED Congress 2021(オンライン開催)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 無線LAN利用の問題点-相互干渉を防ぐ2021

    • Author(s)
      花田英輔
    • Organizer
      第50回日本医療福祉設備学会(東京ビッグサイト,東京都江東区)
    • Related Report
      2021 Research-status Report
  • [Presentation] Recommendations for hospital construction to improve the wireless communication infrastructure environment2021

    • Author(s)
      E. Hanada
    • Organizer
      2021 International Conference on Emerging Technologies for Communications(オンライン開催)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 病院内における無線音声通信(携帯電話、スマートフォン)の流れ~現状の問題点と今後~2021

    • Author(s)
      花田英輔
    • Organizer
      第96回日本医療機器学会大会(オンデマンド開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] FSSと誘電体周期構造の組合せによる帯域的電磁波遮へいに関する3次元数値解析2021

    • Author(s)
      河野誠太,工藤孝人
    • Organizer
      日本生体医工学会令和2年度第4回医療・福祉における電磁環境研究会(オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] 誘電体周期構造とFSSによる帯域的な電磁波遮へいに関する3次元FDTD解析2020

    • Author(s)
      河野誠太,工藤孝人
    • Organizer
      2020年度(第73回)電気・情報関係学会九州支部連合大会(オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] Java3Dと3次元FDTD法に基づく電磁波シミュレータ2020

    • Author(s)
      田中滉人,工藤孝人
    • Organizer
      2020年度(第73回)電気・情報関係学会九州支部連合大会(オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] 二重正方環型FSSを用いた電磁波遮へいに関する3次元FDTD解析2020

    • Author(s)
      河野誠太,工藤孝人
    • Organizer
      2020年電子情報通信学会通信ソサイエティ大会(オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] Future prospects for voice communication in the field of clinical medicine2020

    • Author(s)
      Eisuke Hanada
    • Organizer
      International Conference on Emerging Technologies for Communications (ICETC2020)(オンライン開催)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Problems with voice/data communication and solutions through better facility management2020

    • Author(s)
      Eisuke Hanada
    • Organizer
      Digital Health Institute Summit(オンライン開催)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Management of wired and wireless communication systems and the electric power supply of hospitals2020

    • Author(s)
      Eisuke Hanada
    • Organizer
      Webinar on Infrastructure and Construction(オンライン開催)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 医療機関での無線通信の活用と課題2020

    • Author(s)
      花田英輔
    • Organizer
      第59回日本生体医工学会大会(オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] How can we best manage the electromagnetic environment of modern clinical medicine?2020

    • Author(s)
      Eisuke Hanada
    • Organizer
      The 14th International Symposium on Medical Information and Communication Technology (ISMICT2020)(オンライン開催)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 大分大学理工学部理工学科電気エネルギー・電子工学プログラム 工藤研究室ホームページ

    • URL

      https://www.eee.oita-u.ac.jp/ee4/5F/

    • Related Report
      2023 Annual Research Report
  • [Remarks]

    • URL

      https://www.eee.oita-u.ac.jp/ee4/5F/

    • Related Report
      2022 Research-status Report
  • [Remarks] 大分大学理工学部創生工学科電気電子コース 工藤研究室ホームページ

    • URL

      https://www.eee.oita-u.ac.jp/ee4/5F/

    • Related Report
      2021 Research-status Report 2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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