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Item type:Publication, Access status: without files , Measurement setup for industrial communication techniques under electromagnetic interferenceA increasing number of sensor networks are utilising industrial Ethernet standards. Many applications in factory and process automation require real time capabilities. Therefore, robustness is a key feature in industrial communication. The major source of noise are variable speed drives that generate electromagnetic disturbances. In this study, we propose a new application-related approach of testing communication techniques for conducted data transmission in an industrial environment. The approach consists of three configurable parts. The first part is the generation of electromagnetic interference (EMI) by frequency inverters with configurable drive profiles. The second part is EMI coupling to the communication line, which is realized as in-cable coupling and cross-cable coupling. The last part is the communication and measurement system. For each part a concept and a realization is proposed. With exemplary measurements we show the superior possibilities of this experimental approach.Publicationtype: Conference Paper39 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Experimental analysis of frequency inverter noise on single pair Ethernet communicationIndustrial Ethernet in factory and process automation requires real time capabilities. Therefore, robustness is a key feature in industrial communication. The major source of noise are variable speed drives that generate impulsive noise. In this publication, we propose an application-related classification of the impact of industrial electromagnetic interference on data transmission. This classification is based on the modelling of a specific type of application. We model the application via variable speed drives. The drive profiles are taken from actual applications in intralogistics. We describes and measure noise emitted by frequency inverters. The measurement setup is described. It comprises generation of noise by frequency inverters, coupling noise from mains to communication cabling and measuring the noise and its effect on communication. Single pair Ethernet (SPE) cables, modulation and line coding are used according to 802.3cg. The measurements indicate that the main noise source is the switching of the power electronics. Different rotation speeds and torques have an effect on the time-variant appearance of noise but not on noise level. With the measurements, we analyse the impact of the noise on a 2-PAM-Communication.Publicationtype: Conference Paper47