O6-1 The influence of the stirrer orientation on the sensitivity analysis in undermoded reverberation chambers, Anett KENDERES, Szabolcs GYIMÓTHY and Péter Tamás BENKŐ
Sensitivity analysis (SA) is performed in this work, including a set of important configuration parameters in reverberation chambers (RCs) chosen based on previous studies. Surrogate modelling techniques were involved to efficiently calculate the Sobol’ indices as a measure of uncertainty quantification (UQ). This approach helps to appraise the contributions of different parameters in the lower frequency range, where the well-stirred condition cannot be established, yielding a proficient apparatus for the stirrer, the chamber design, and the measurement process. The main focus is now to investigate the effect of the stirrer orientation (horizontal or vertical) on the SA measures.
O6-2 Continuous EMF exposure in the sensitive area of kindergarten in Novi Sad city, Dragan KLJAJIC, Nikola DJURIC, Tamara SKORIC and Karolina KASAS-LAZETIC
Electromagnetic field (EMF) exposure assessment of the general population is certainly one of the most important environmental protection issues today. Therefore, long-term measurements of EMF level are conducted in several monitoring systems in the world. One of them is the Serbian national EMF RATEL monitoring network, that offers public and transparent insight into the long-term EMF exposure in human surroundings. This paper brings the results of comprehensive statistical analysis of five-year high-frequency electric field exposure, based on the data from a sensor unit installed at the kindergarten, in Novi Sad city. Daily, weekly and monthly averaging of time series of exposure boundaries was performed, while yearly comparison is graphically presented. Obtained values were far below the maximal allowable level, according to the Serbian legislation.
O6-3 Calibration of magnetic field sensor – PCB-based H-coil, Stan ZUREK, Srđan DIVAC, Krzysztof CHWASTEK and Branko KOPRIVICA
The aim of this paper is to present the results of calibration of a sensor of magnetic field (H-coil). The sensor was manufactured in a form of a printed circuit board, containing two orthogonal coils. It is intended for tangential measurement of orthogonal components of magnetic field strength. The sensor needs to be calibrated after production. The methodology for its calibration, including measurement setup and calculations are presented in the paper, as well as a discussion of the results obtained.
O6-4 Simulation of a self-biased magnetoelectric magnetic field sensor for magnetometry, Mirza BICHURIN, Viktor LEONTEV and Stanislav SHATKEVICH
In the paper a new type of sensors based on the gradient magnetostriction-piezoelectric structures for creating the magnetic field sensor is presented. The limit of detection of the magnetic field sensor is 1 nT. Magnetoelectric gradient magnetostriction-piezoelectric LiNbO3/Ni/Metglas structures for the sensor were studied.
O6-5 Predictive recognition of the harmonic spectrum of failure state of electric motors, Željko HEDERIĆ, Venco Ćorluka, Krešimir MIKLOŠEVIĆ and Dejan KRSTIĆ
Early detection and diagnosis of faults in electric motors is key to ensuring the reliability and efficient operation of industrial equipment. This paper is about the development of a predictive detection system for the analysis of the harmonic spectrum of electric motor faults in a distribution network of an industrial plant. By using non-invasive monitoring techniques and advanced signal processing algorithms, this system aims to enable proactive maintenance and minimise production interruptions.