Monitoring and modelling of long-term radiofrequency electromagnetic field levels

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Kurnaz Ç., Mutlu M.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, vol.36, no.2, pp.669-683, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.17341/gazimmfd.641287
  • Journal Name: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.669-683
  • Keywords: Radiofrequency electromagnetic field, Long-term Radiofrequency electromagnetic field measurement, Base stations, ICNIRP, RF-EMF EXPOSURE, RADIATION, ENVIRONMENTS, SCHOOLS, HOMES
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

In this study, in order to determine the radiofrequency electromagnetic field (RF-EMF) level exposed in the home environment and to model its change, 24-hour RF-EMF measurements were performed in the frequency range of 100 kHz to 3 GHz. In measurements, the highest RF-EMF value was recorded as 17.31 V/m, which is below the limit values determined by ICNIRP and BTK. In measurement locations that are in line of sight with the base stations, the RF-EMF value changes according to the measurement time. The RFEMF value measured in the afternoon is about 32% higher than at night. Statistical analysis of data showed that the long-term RF-EMF can be best expressed by Burr distribution. Unlike the studies in the literature, the change of RF-EMF during the day was examined and a new mathematical model was proposed. With the proposed model, the change of 24-hour RF-EMF during the day in the home environment can be determined with accuracy of up to 95% without the need for measurement using only 6-hour RF-EMF value.