Study and evaluation of induced currents in human body from exposure to electromagnetic fields at low frequencies

摘要

Extremely Low Frequency (ELF) Electromagnetic Fields due to low and medium voltages are normally low. But with the wide spread and increase in the use of electrical energy, the potential for exposure has increased considerably. The current research has focused on potential health effects of magnetic fields because some epidemiological studies have suggested an increased cancer risk associated with estimated time of magnetic field exposure. Since the wavelength of ELF electric and magnetic field is sufficiently greater than the dimensions of the biological object, so the electric and magnetic fields can be independently treated. Our main topic in this research is to investigate the effect of magnetic field at power frequency and analyse of the interaction between these fields and the living organisms. We used the measured results and the applied the three techniques of simulating the induced currents in the human body by using a Matlab program. The obtained results can demonstrate the degree of danger due to the induced currents from both magnetic and electric fields. Comparing these results by the values given by International Committee on Non-Ionizing Radiation Protection (ICNIRP) guidelines can tell the degree of danger.