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Wyszukujesz frazę "railway systems" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
The safety assurance method of railway control systems using object oriented languages
Metoda zapewnienia bezpieczeństwa systemów sterowania ruchem kolejowym w językach obiektowych
Autorzy:
Sumiła, M.
Lewiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/224255.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sterowanie ruchem kolejowym (SRK)
programowanie obiektowe
sterowanie w czasie rzeczywistym
bezpieczeństwo systemów sterowania
railway control systems
object programming
safety programming
Opis:
The paper deals with introduction of safety rules to the software designed for railway control systems. The basic assumption is related to software designed using high level language UML with possibility of modelling, verification, functional testing and simulation in CASE environment. The object methodology the base of UML regards the software implementation with respect to safety and real time control corresponding to UIC recommendations and CENELEC standards.
Praca dotyczy metody wprowadzania reguł bezpieczeństwa do oprogramowania przeznaczonego dla systemów sterowania ruchem kolejowym. Przyjęto, że oprogramowanie jest tworzone w języku wysokiego poziomu UML, który daje możliwość modelowania, weryfikacji, testowania funkcjonalnego oraz symulacji w środowisku CASE. Metodologia obiektowa będąca podstawą języka UML obejmuje implementację oprogramowania uwzględniającą bezpieczeństwo i sterowanie w czasie rzeczywistym zgodnie ze standardami i zaleceniami UIC i CENELEC.
Źródło:
Archives of Transport; 2010, 22, 2; 238-257
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of the possibility of using transmission in the lte system on a selected railway line for the purpose of running railway traffic
Autorzy:
Chrzan, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1833612.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
GSM-R
LTE system
open systems
railway line
railway traffic control
system LTE
linia kolejowa
kontrola ruchu kolejowego
Opis:
The railway and the Rail Traffic Control Systems installed on it in Poland have recently experienced rapid technological development. This is undoubtedly due to the funds that Poland receives from the European Union for the modernization of railway infrastructure. The development of modern railway infrastructure means not only stations, modern rolling stock, but also safe and reliable train control systems based on the latest telecommunications and information technologies. For a longer time, radio communication based on the GSM-R (GSM for Railways) standard is being introduced on PKP. For this purpose, dedicated infrastructure is being built in order to use this technology for railway traffic. This is associated with huge investment costs. Since the beginning of its existence, research has been conducted worldwide on the use of LTE (Long Term Evolution) technology for conducting railway traffic. For economic and technological reasons, it is necessary to study other possibilities of using modern telecommunications infrastructure not yet dedicated to railway tasks in these open networks. The article will present research on the use of open radio communication network based on LTE standard for rail traffic and passenger comfort. It will discuss the research method and selected results of measurements made on railway line no. 4. The choice of this railway line was dictated by two factors. The first one resulted from the maximum train speed, the second one is the variety of rolling stock used on this line (compartmental and non-compartmental wagons). The part of research concerning collection of measurement material was performed within the framework of completed research work PBS3/A6/29/2015. As a result of conducted in-depth literature analysis as well as performed measurements and calculations, it allowed to develop a model and software for simulating system operation in real conditions. This system allows to send railway telegrams on appropriate safety level defined in standardization documents. The research proved the possibility of using an open system in the LTE standard for the transmission of signals for railway traffic control and passengers while maintaining an appropriate level of safety. The only limitations which were indicated by the tests are improper radio interface coverage of railway lines. Appropriate planning of radio coverage of railway areas by radio communication operators (so far ignored) with proper cooperation of infrastructure manager can lead to launching efficient communication system without necessity to build specialized infrastructure for railway.
Źródło:
Archives of Transport; 2021, 57, 1; 91-101
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method for increasing the efficiency of equipment’s maintenance in railway traction power supply systems
Autorzy:
Matusevych, O.
Kuznetsov, V.
Sychenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/223664.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
railway traction
power systems
efficiency
maintenance equipments
traction substation
trakcja kolejowa
systemy zasilania
wydajność
konserwacja urządzeń
Opis:
Purpose. To develop the method for increasing the efficiency of the equipment’s maintenance and repair system, ensuring necessary level of operational reliability of the equipment, safety and reliability of the electric equipment with minimal expenses on operation. Relevance. Aging of the power equipment in railway power supply systems sharply raised a need for assessment of its states and degree of risk for operation outside rated service life. In critical conditions of technological processes and operational modes of the railways it is necessary to increase the equipment’s operational reliability. The scheduled maintenance and repair system whose main technical and economic criterion is the minimum of equipment’s downtimes on the basis of a rigid regulation of repair cycles, in the conditions of market regulations in the field of repair in many cases does not provide the optimal decisions due to insufficient financing. The solution of this problem is possible by improvement of the maintenance and repair system. Under these conditions the main direction for supporting the operational reliability of power electric equipment on TS is a development of the modern methods based on individual supervision over real changes of technical condition of power equipment. Scientific novelty. In this article the authors proposed an integrated approach, on the basis of which can be developed the effective maintenance and repair system for traction power supply systems. Proposed approach allowed to react quickly to changes of service conditions on traction substations, to control the technical condition of power electric equipment under the conditions of uncertainty, to establish interrelation between quality of service and operational reliability of the equipment, to choose a service strategy on traction substations. Practical importance. The validity of the developed method was confirmed by the results of calculations and practically by choosing the optimal maintenance's option for transformer TDTN-25000/150-70 U1 (ТДТН-25000/150-70 У1) on traction power supply substation.
Źródło:
Archives of Transport; 2018, 47, 3; 39-47
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimizing the impact of electromagnetic interference affecting the control system of personal rapid transit in the context of the competitiveness of the supply chain
Minimalizacja wpływu zakłóceń elektromagnetycznych oddziaływujących na system sterowania Personal Rapid Transit w kontekście konkurencyjności łańcucha dostaw
Autorzy:
Choromański, W.
Dyduch, J.
Paś, J.
Powiązania:
https://bibliotekanauki.pl/articles/224363.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
transport
zaburzenia elektromagnetyczne
system sterowania PRT
łańcuch dostaw
konkurencyjność łańcucha dostaw
bezpieczeństwo transportu
electromagnetic distrubances
security systems
railway area
PRT control system
Opis:
Personal Rapid Transit control system is exploited in diverse electromagnetic enlivenments. The unintentional or intentional electromagnetic disturbances on a vast railway area can disturb operation of PRT control system. The security systems are responsible for security of humans and goods transpiration and therefore their disturbance can threaten life or health their disturbance can threaten life or health of people exploitation decisions in the reference to these systems. The paper presents the ways of minimization of the influence of electromagnetic disturbances on PRT control system.
System Personal Rapid Transit eksploatowany jest w różnych warunkach otaczającego go środowiska elektromagnetycznego. Występujące na rozległym obszarze "kolejowym" zaburzenia elektromagnetyczne zamierzone lub niezamierzone (stacjonarne lub ruchome) mogą być przyczyną zakłócenia systemu sterowania PRT. System sterowania odpowiada za bezpieczeństwo transportu PRT - proces przemieszczania ludzi i/lub ładunków. Zakłócenie podstawowych funkcji systemu sterowania może być przyczyną wystąpienia zagrożeń życia i zdrowia ludzi. Niniejszy artykuł omawia sposoby minimalizacji wpływu zakłóceń elektromagnetycznych na system sterowania PRT.
Źródło:
Archives of Transport; 2011, 23, 2; 138-152
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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