Analysis of alternating magnetic field location technology of buried pipe lines

Author

Honda, S. ; Miyamoto, Y.

Author_Institution

Fac. of Eng., Kumamoto Univ., Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3281

Lastpage

3283

Abstract

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

Keywords

electromagnetism; magnetic field effects; position measurement; alternating magnetic field location technology; assumptions; buried pipe lines; earth contact electrode; homogeneous soil of pure resistance; numerically evaluated; pipe location; quasi-steady field; table lookup algorithm; underground current; Contact resistance; Electrical resistance measurement; Electrodes; Grounding; Magnetic analysis; Magnetic field measurement; Magnetic fields; Signal processing algorithms; Soil; Space technology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42278

Filename

42278