Filtr pro potlačení síťového rušení v biosignálech

Abstract

This thesis deals with a design of band-stop analog filter that eliminates 50Hz network interference; this interference occurs during the measurement of biological signals. This thesis introduces theoretical computation of filters, their practical realization and consequential measurement of frequency characteristics. The electrocardiogram signal with superimposed interference is used for the practical demonstration of biosignals filtration. The signal is generated by created signal generator and further filtered by designed filters. The thesis concludes with frequency characteristics of filtered signals and an assessment of the distortion of a useful signal.