METHOD OF MONITORING ELECTROMAGNETIC ENVIRONMENT IN PRODUCTION CONDITIONS OF ISOLATED EFFECT OF RADIATING SOURCES Russian patent published in 2024 - IPC G01R29/08 

FIELD: measuring.

SUBSTANCE: invention is intended for measurement and evaluation of levels of electric, magnetic and electromagnetic fields generated in production facilities by radiating sources, and can be used to determine time of stay of personnel with isolated effect of EMF components in frequency range extended to 3 THz. Carried out is a single measurement of electric and magnetic field strengths, energy flow density, heat flux density from radiating sources at distance of 0.1 m from the centre of each external surface of the source made of metal or at distance of 0.1 m from the increased heating zone on each external surface of each source coated with dielectric materials according to the results of thermography. Strength of permanent magnetic and electric fields is measured. Strengths of electric and magnetic fields of 50 Hz are measured in ranges of 10-30 kHz, 30 kHz – 3 MHz, strength of electric fields is measured in ranges of 3-30 MHz, 30-300 MHz and 30-50 MHz. Energy flow density is measured in range of 300 MHz – 300 GHz, heat flow density in range of 300 GHz – 3 THz. Permissible time of staying at the measurement point for each external surface is determined. Least one is selected from the obtained values of the allowable residence time. Measured values of the electromagnetic field components corresponding to the least allowable value of the residence time are used to form a spatial pattern of distribution of electromagnetic field components in the production room. State of the electromagnetic environment is judged from the obtained dot pattern of the hazard of the electromagnetic environment.

EFFECT: wider field of application, high accuracy of monitoring the electromagnetic environment and enabling determination of the allowable time of staying in conditions of isolated effect of EMF components in the frequency range extended to 3 THz.

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