Nordin, Muhammad Arif (2023) Electromagnetic compatibility (EMC) analysis in railway environment towards cardiac pacemaker using analytical and measurement methods. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

This thesis is about the ambient electromagnetic fields that come from the railway environment in Malaysia and if its exceeds the limit level of cardiac pacemaker. In Malaysia, the development of public transportation in the railway system is consistent throughout the years since the 90’s. The electric train is one of the transportation mode that is widely used across the world to transport peoples and goods. With the complex environmental system, they were highly exposed to electromagnetic fields especially during the train stations. At present, Malaysia is still expanding its railway transportation system especially in the Klang Valley. Calculation, measurement and analysis of electromagnetic fields is the main purpose of this study in certain railway environment. An electromagnetic emission from apparatus (non-intentional transmitter) and intentional transmitters in the railway environment has been calculated. Both results show that the electric field value were not exceeded cardiac pacemaker immunity level. Magnetic field from high voltage power cables were taken into account as it can also gives effect towards cardiac pacemaker and the result shows it did not exceeds 1mT and 163.52 dBμA/m limit level. The measurement has been conducted using a Spectrum Analyzer between 9 kH and 6 GHz. Loop Antenna and Tri-log antenna has been used for this frequency range to measure its ambient electromagnetic field. Measurement results were presented and analyzed. Analysis of ambient measurement result shows that the highest electromagnetic field at station area is at 111.99 dBμV/m which is at Kampung Batu Station. The calculation of electric field and magnetic field from apparatus and intentional transmitter as well as high voltage power cables show that the emission is relatively lower than immunity for cardiac pacemaker. In particular, the emission of electromagnetic field interference from railway environment in did not give adverse effect towards cardiac pacemaker and safe for passenger to be around the environment

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