Modeling of Medium Frequency Propagation Along a Thin Wire Parallel to a Lossy Return Path

Details

• Personal Author:
  Brocker DE ; Li J ; Sieber PE ; Waynert J ; Werner DH ; Werner PL
• Description:
  The National Institute for Occupational Safety and Health has been investigating the performance of medium frequency (MF) communications systems in which electromagnetic waves are known to couple parasitically to conductors present in underground coal mine tunnels. In an effort to understand the MF signal behavior and factors that might control the attenuation and coupling of signals to the conductors, a representative computational electromagnetic model using the planar multilayered Green's function is developed and compared with analytic approximations available in the literature. Results are discussed for return path dissipation factors ranging from that of a good dielectric to that of a good conductor at MF. Finally, the approximate analytic forms, in conjunction with the computer model calculations, are used to construct equivalent transmission line representations for a given set of wire geometries and return path material parameters. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Electricity Electromagnetic Phenomena Mining Occupational Health Safety
• Keywords:
  Coal-mining Electrical-measurement Electrical-waves Electromagnetic-energy Electromagnetic-fields Electromagnetic-wave-transmission Underground-mining
• Series:
  Mining Publications
• ISBN:
  9781622762385
• Publisher:
  Applied Computational Electromagnetics Society
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  79-84
• NIOSHTIC Number:
  nn:20041379
• Citation:
  28th Annual Review of Progress in Applied Computational Electromagnetics, April 10-14, 2012, Columbus, Ohio. Monterey, CA; Applied Computational Electromagnetics Society, 2012 Apr; :79-84
• Contact Point Address:
  Donovan E. Brocker, Department of Electrical Engineering The Pennsylvania State University, University Park, PA 16802
• Email:
  deb5223@psu.edu
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  28th Annual Review of Progress in Applied Computational Electromagnetics, April 10-14, 2012, Columbus, Ohio
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:487807533e14e37f11f2921af5c288b799bb0c8a17c49ac891f63dae055162d25b04b82203b20e07059e0de33554dc0388ae54664d15be039257b6ad174cc618
• Download URL:
  https://stacks.cdc.gov/view/cdc/227448/cdc_227448_DS1.pdf
• File Type:
  [PDF - 747.86 KB ]