Human body impedance for low-frequency using numerical human models

• Project/Area Number: 22760218
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Kagawa National College of Technology
• Principal Investigator: TARAO Hiroo 香川高等専門学校, 電気情報工学科, 准教授 (00321498)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 人体インピーダンス / 皮膚インピーダンス / 人体詳細モデル / 接触電流 / SPFD法 / 人体内部抵抗

Research Abstract

Numerical system including complex arithmetic for human body impedance using numerical human models was completed. As a result of calculation for the typical current path (hand-to-foot), it is confirmed that the enough large electrode areas considered in the study did not influence to the human body impedance. The calculated internal body impedance was about twice larger than measurement data reported by others. Meanwhile it is found that the percentage contribution of the segmental impedances of each part of the body to the total impedance for the calculated and the measured data coincides each other.

Research Products

• [Journal Article] Numerical evaluation of currents induced in a worker by ELF non-uniform electric fields in high voltage substations and comparison of them with experimental results (2013)
  • Author(s): H. Tarao, L. Korpinen, H. Kuisti, N. Hayashi, J. Elovaara, and K. Isaka
  • Journal Title: Bioelectromagnetics Volume: Vol.34, No.1, Pages: 61-73
• [Journal Article] Numerical evaluation of currents induced in a worker by ELF non-uniform electric fields in high voltage substations and comparison of them with experimental results (2013)
  • Author(s): H. Tarao
  • Journal Title: Bioelectromagnetics Volume: 34 Issue: 1 Pages: 61-73
  • DOI: 10.1002/bem.21738
  • Peer Reviewed
• [Journal Article] Effects of tissue conductivity and electrode area on internal electric fields in a numerical human model for ELF contact current exposures (2012)
  • Author(s): H. Tarao, H. Kuisti, L. Korpinen, N. Hayashi, and K. Isaka
  • Journal Title: Physics in Medicine and Biology Volume: Vol.57, No.10 Pages: 2981-2996
• [Journal Article] Effects of tissue conductivity and electrode area on internal electric fields in a numerical human model for ELF contact current exposures (2012)
  • Author(s): H. Tarao
  • Journal Title: Physics in Medicine and Biology Volume: 57 Issue: 10 Pages: 2981-2996
  • DOI: 10.1088/0031-9155/57/10/2981
  • Peer Reviewed
• [Journal Article] 商用周波数における人体内部抵抗の数値解析結果と実測結果との比較 (2011)
  • Author(s): 太良尾・林・浜元・伊坂
  • Journal Title: 電学論A Volume: Vol.131, No.3 Pages: 178-184
  • NAID: 10027803180
• [Journal Article] 商用周波数における人体内部抵抗の数値解析結果と実測結果との比較 (2011)
  • Author(s): 太良尾, 林, 浜元, 伊坂
  • Journal Title: 電気学会 A論文誌 Volume: 131 Pages: 178-184
  • NAID: 10027803180
  • Peer Reviewed
• [Presentation] 低周波・中間周波領域における人体インピーダンスの数値解析 (2013)
  • Author(s): 太良尾・篠原・林
  • Organizer: 第5回医用生体電磁気学シンポジウム
  • Place of Presentation: pp.75-76
• [Presentation] Effect of Tissue Conductivity on Internal Body Resistances of Numerical Human Model at Power Frequency (2012)
  • Author(s): H. Tarao, N. Hayashi, L. Korpinen, J. Gonzalez, T. Matsumoto, and K. Isaka
  • Organizer: Proceedings of The Bioelectromagnetics Society 34th Annual Meeting
  • Place of Presentation: PB-34
• [Presentation] Effect of Tissue Conductivity on Internal Body Resistances of Numerical Human Model at Power Frequency (2012)
  • Author(s): H. Tarao
  • Organizer: The Bioelectromagnetics Society 34th Annual Meeting
  • Place of Presentation: Brisben
• [Presentation] 低周波電界中の自動車に接触した人体内誘導電流の解析 (2012)
  • Author(s): 太良尾浩生
  • Organizer: 平成24年 電気学会Ａ部門大会
  • Place of Presentation: 秋田市
• [Presentation] 複数の数値モデルを用いた低周波人体内部抵抗の推定～BMIとの関係～ (2011)
  • Author(s): 篠原宏紀, 太良尾浩生, 他
  • Organizer: 電子情報通信学会環境電磁工学技術報告研究会
  • Place of Presentation: 北海道大学
  • Year and Date: 2011-09-12
• [Presentation] Calculation of induced electric fields in human models exposed to ELF magnetic and electric fields (2011)
  • Author(s): H.Tarao, et al
  • Organizer: International Symposium on High Voltage Engineering 2011
  • Place of Presentation: Hannover, Germany
  • Year and Date: 2011-08-22
• [Presentation] Internal body resistance of various human models at power frequency (2011)
  • Author(s): H.Tarao, et al
  • Organizer: The Bioelectromagnetics Society 32nd Annual Meeting
  • Place of Presentation: Halifiax, Canada
  • Year and Date: 2011-06-14
• [Presentation] 複数の数値モデルを用いた低周波人体内部抵抗の推定 ～ BMIとの関係 ～ (2011)
  • Author(s): 篠原・中山・太良尾・浜元・林
  • Organizer: 信学技法
  • Place of Presentation: EMCJ2011-75, pp.21-26
• [Presentation] 低周波接触電流による人体数値モデルの体内電界計算 (2011)
  • Author(s): 中山・太良尾・林
  • Organizer: 信学技法
  • Place of Presentation: EMCJ2011-74, pp.15-20
• [Presentation] Calculation of induced electric fields in human models exposed to ELF magnetic and electric fields (2011)
  • Author(s): H. Tarao, N. Hayashi, L. Korpinen, T. Matsumoto, and K. Isaka
  • Organizer: ISH2011
  • Place of Presentation: (No.A-005)
• [Presentation] Internal body resistance of various human models at power frequency (2011)
  • Author(s): H. Tarao, N. Hayashi, L. Korpinen, T. Matsumoto, and K. Isaka
  • Organizer: Proceedings of The Bioelectromagnetics Society 32nd Annual Meeting
  • Place of Presentation: PA-37, Halifax
• [Presentation] Numerical Analysis of Internal Human Body Resistance at Power Frequency (2010)
  • Author(s): H.Tarao, N.Hayashi, T.Matsumoto, K.Isaka
  • Organizer: 15th Asian Conference on Electrical Discharge
  • Place of Presentation: Xi'an Jiaotong University, China
  • Year and Date: 2010-11-09
• [Presentation] 商用周波数における人体内部抵抗の数値解析結果と実測結果との比較 (2010)
  • Author(s): 太良尾・林・浜元・伊坂
  • Organizer: 平成22年 電気学会 A部門大会
  • Place of Presentation: 琉球大学(VI-10)