A New Approach to Monitoring Low Frequency Electromagnetic Fields

DOI : http://dx.doi.org/10.13005/bbra/1454

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The article contains the analysis of energy characteristics of low frequency electromagnetic fields; shows the relationship between the value and the direction of active and reactive intensity and the borders of near- and far-field zones, and distance to the source of radiation. It also shows in theory the possibility to determine the integrated intensity of the low frequency electromagnetic field. A measuring device was developed, and experiments on examination of the active intensity in the near-field zone of an electromagnetic field source were carried out. The article suggests a new approach to monitoring low frequency electromagnetic fields based on determination of energy characteristics, which will allow to estimate overall spatial distribution of energy, total energy impact, and also to develop the most effective methods of protection.

low frequency electromagnetic field; monitoring; energy parameters; integrated intensity; active intensity; reactive intensity; near-field zone; cross spectrum