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EN
The article presents the impact of electromagnetic interferences of low frequency range, on transport security systems used in wide transport areas. Intended and unintended (stationary and mobile), electromagnetic interferences, impacting on items and components constituting transport system at wide area (seaport, railway, etc.), cause changes of its vulnerability, resistance and durability. Diagnostics of interferences sources (amplitude, frequency range, radiation characteristics, etc.), appearing within transport environment, and usage of appropriate technical solutions of systems (i.e. shielding, reliability structures), allows for safe implementation of safety surveillance of human beings, properties and communication means.
EN
The electronic safety systems are systems, the aim of which is to detect threats in the transport process – for stationary and moving objects. These systems are increasingly being used in the transport process, where they provide safety – to people as well as goods transported in the stationary and moving objects. These systems operate in a diverse electromagnetic environment. The paper presents the research results of the electromagnetic interference impact on the electronic safety system with a structure of the control panels connected in parallel. The interference impact on selected operating parameters was presented for two frequency ranges, i.e. ELF (0÷2) kHz and VLF (2÷100) kHz frequency ranges
PL
Elektroniczne systemy bezpieczeństwa są to systemy, których celem jest wykrywanie zagrożeń występujących w procesie transportowym - dla obiektów stacjonarnych i ruchomych. Systemy te są coraz częściej stosowane w procesie transportowym, gdzie zapewniają bezpieczeństwo – ludziom, przewożonym towarom w obiektach stałych oraz ruchomych. Systemy te pracują w zróżnicowanym środowisku elektromagnetycznym. W artykule przedstawiono wyniki badań oddziaływania zakłóceń elektromagnetycznych na elektroniczny system bezpieczeństwa o strukturze central alarmowych połączonych równolegle. Wpływ zakłóceń na wybrane wskaźniki eksploatacyjne przedstawiono dla dwóch zakresów częstotliwości, tj. zakres częstotliwości ELF (0÷2) kHz oraz VLF (2÷100) kHz.
EN
Security systems are operated in diversified weather conditions and in various surrounding electromagnetic environments, which may be the cause of the occurrence of interferences. The article presents fundamental the principles of shielding of electromagnetic field in the range of small frequencies.
EN
For determining the effect of individual field components on systems is required making measurements i.e. drawing up of the radiation characteristics of interference sources. On the basis on the measurements and model chosen of operation process of the transport security system it is possible to determine the limit values of the electric field components for the two sub-bands to 5 Hz to 100 kHz. The steering system is responsible for the security of the PRT transport: the process of people transferring and/or freight. Any disruption of the basic functions of the steering system can be the cause of the occurrence of human life and health hazards. The presented article discusses the impact of electromagnetic interference: the electric component of the field on the process of the operation of the security system.
EN
This paper presents the issues related to electromagnetic compatibility in the chosen transport telematic systems. Intentional or unintentional (stationary or mobile) electromagnetic disturbance occurring over a large rail area may cause disruption of their operations. Therefore, it becomes important to analyse disturbances affecting these systems and to develop methods for reducing their impact.
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