University of Twente Student Theses


Measuring, logging, and visualizing pulsed electromagnetic fields combined with GPS location information in augmented reality

Isrie, S.V (2018) Measuring, logging, and visualizing pulsed electromagnetic fields combined with GPS location information in augmented reality.

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Abstract:Accurate assessment of exposure to Electro-Magnetic Fields (EMF) fields in the vicinity of radar antennas has gained an increasing interest over the last few decades, especially in the area of safety exposure levels and visualizing the field strengths in an understandable manner for non-professionals. These field strengths can be measured using thermocouple detectors when we are interested in the average values, for example for exposure levels. In case the actual, peak field strength is of interest the thermocouple detector is too slow and diode detectors need to be used. In case of a large crest factor, like a radar, a cascaded diode detector is needed, which is not available as a standard exposure electromagnetic field strength probe. Furthermore, a registration of location while doing measurements is very convenient. This thesis describes a data acquisition system built in LabVIEW (LV), which displays and logs the data of a cascaded diode-based wideband power sensor and a GPS sensor in a synchronized way. The system runs on a laptop, which has a remote desktop connection with a Heads- up Display (HUD) using Microsoft HoloLens via a travel router. Both the laptop and travel router are carried in a backpack. The HoloLens allows to control and view the LV application in real time. This allows the user to walk and see the measured data in augmented reality without the need to look down on a laptop and missing the maximum measured electric field strength. This reduction in delay occurring from human reaction time allows to follow measurements more accurately in real time. The built system is convenient, compact and mobile in usage and can be used for compliance testing with the health and safety requirements for workers or the general public of radiated electrical fields in difficult to reach areas without compromising safety regulations.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering MSc (60353)
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