Analysis of alternating magnetic field location technology of buried pipe lines

S. Honda, Y. Miyamoto

Research output: Contribution to journalArticle

3 Citations (Scopus)


The magnetic field induced by currents flowing through the ground between a buried pipe and an earth contact electrode is analyzed and numerically evaluated under the assumptions of homogeneous soil of pure resistance and quasi-steady field in order to clarify and to increase the accuracy of alternating magnetic field location technology. An effective formula for the evaluation of the magnetic field induced by underground current is developed. The theory evaluates the magnetic field with about 80% accuracy, providing more precise location. The time required for the evaluation is greatly reduced by the development of a table lookup algorithm. Experimental measurement of magnetic fields on an open space agree well with the numerical evaluations in spite of the use of idealized assumptions.

Original languageEnglish
Pages (from-to)3281-3283
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5
Publication statusPublished - 1989 Sep
Externally publishedYes


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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