scholarly journals SRK systems - registration of operating data

2018 ◽  
Vol 19 (6) ◽  
pp. 761-763
Author(s):  
Bartłomiej Ulatowski ◽  
Zbigniew Łukasik
Keyword(s):  
Control Systems ◽  
Traffic Control ◽  
High Speed ◽  
Railway Transport ◽  
Operating Data ◽  
Railway Traffic ◽  
European Project ◽  
Operational Data ◽  
Rail Traffic

The following article deals with the topic of Rail Traffic Control systems, focusing on the aspects of registration and acquisition of operational data. In the first part of the text, the authors focused on describing what SRK systems are, and how they can be modernized in order to increase security. At the beginning of the study, the authors presented a railway transport called "High Speed railways". The KDP had a big influence on the development of SRK systems. In the further part of the article, the authors focused on the possibility of recording operating data of individual systems and presented the ETCS system, which is a European project aimed at standardizing systems for Railway Traffic Control.

scholarly journals Types of operating data in Rail Traffic Control Systems

2018 ◽  
Vol 19 (12) ◽  
pp. 693-696
Author(s):  
Bartłomiej Ulatowski ◽  
Zbigniew Łukasik ◽  
Alfred Kurkowski
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Operating Data ◽  
Railway Systems ◽  
Railway Industry ◽  
Traffic Control System ◽  
Real Challenge ◽  
Operational Data ◽  
Rail Traffic

This article discusses the issues of operating data in national and European Rail Traffic Control systems, i.e. in the ERTMS / ETCS and SRK systems. The article presents the possibilities and limitations of ERTMS systems. General principles of system implementation are also given, as well as specific functional levels of the Rail Traffic Control System are presented. The article describes and presents operational data related directly to the railway systems, which are based on the standard described in document E-1758. The article draws attention to the complexity of Rail Traffic Control processes, as well as the fact that it is necessary to modernize solutions that in the coming years will be a real challenge for the railway industry..

scholarly journals Study of the possibility of using transmission in the lte system on a selected railway line for the purpose of running railway traffic

2021 ◽  
Vol 57 (1) ◽  
pp. 91-101
Author(s):  
Marcin Chrzan
Keyword(s):  
Control Systems ◽  
Traffic Control ◽  
Research Work ◽  
Rolling Stock ◽  
The European Union ◽  
Radio Communication ◽  
Railway Line ◽  
Railway Traffic ◽  
Railway Infrastructure ◽  
Rail Traffic

The railway and the Rail Traffic Control Systems installed on it in Poland have recently experienced rapid technologi-cal development. This is undoubtedly due to the funds that Poland receives from the European Union for the moderni-zation 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 communi-cation 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.

scholarly journals Optimization of Safety System Structures in Railway Transport

2021 ◽  
Vol 13 (19) ◽  
pp. 10700
Author(s):  
Adrian Gill ◽  
Piotr Smoczyński
Keyword(s):  
Control Systems ◽  
Traffic Control ◽  
Search Algorithm ◽  
Optimal Solution ◽  
Optimization Method ◽  
Safety System ◽  
Railway Transport ◽  
Railway Traffic ◽  
System Components ◽  
Selection Of

One of the basic strategies for reacting to unacceptable risk is introducing new elements to the analyzed domain. These elements and the relations between them can be treated as a safety system. Although expanding the safety system usually reduces the risk of specific hazards, it often leads to new problems resulting from its excessive development: the system becomes costly and difficult to understand. One of the methods of avoiding the negative issues is to apply an approach described in this paper, which is based on an optimization method making use of the results of risk analysis. The article contains a detailed mathematical description of an optimal solution search algorithm, enabling the selection of a configuration of safety system components that will be the most appropriate in terms of the degree of risk reduction and the related costs. The theoretical part was supplemented with a working example concerning railway traffic control systems. Using the proposed method, it is possible to obtain an optimal structure of a safety system, ensuring at least a tolerated level of risk, adequate to the identified hazards.

An application of TCP and UDP protocols in the connection of railway traffic control systems

2019 ◽  
Vol 126 ◽  
pp. 49-59
Author(s):  
Juliusz Karolak ◽  
Andrzej Kochan
Keyword(s):  
Control Systems ◽  
Traffic Control ◽  
Railway Traffic ◽  
Network Connections ◽  
Rail Traffic

The article presents the possible implementation of the interface between computer devices: TCP and UDP protocols of one of the layers of the TCP / IP model, along with their features. Responses to errors were distinguished. Then an example of cooperation between two actual rail traffic control systems and other examples was presented, supplementing them with the proposed classification of connections. Systems are also presented, inside which network connections using TCP and IP protocols are used. The influence of the indicated damages on the substantive work of the connection was also presented.

scholarly journals Integrated power supply system for station equipment of rail traffic control

2018 ◽  
Vol 180 ◽  
pp. 05004
Author(s):  
Ryszard Mielnik ◽  
Zofia Wróbel
Keyword(s):  
Power Supply ◽  
Traffic Control ◽  
Power Supply System ◽  
Formal Analysis ◽  
Discrete Event ◽  
Supply System ◽  
Analysis And Design ◽  
Railway Traffic ◽  
Formal Tool ◽  
Rail Traffic

Railway Traffic Control Systems (RTCS) provide a safe, reliable and efficient movement of rolling stock on railway networks. RTCSs are classified as critical process systems. The power supply system is required to provide a high level of power reliability so that a station equipment of an RTCS safely executes the rail traffic process. The article describes typical solutions of power supply of station equipment of RTCSs. Analysis of these solutions led to the development of assumptions and structures for the integrated power supply system of station equipment. Useful tools for the formal modeling of such systems can be Petri Nets. These nets are a graphical and formal tool for modeling, formal analysis, and design of discrete event systems. The basic element of the integrated power system which is described in the article is the Automatic Reserve Switching system (ARS system). The ARS controller Marked Petri Net (ARS controller MPN) that has been developed by the authors is presented here. The net was subject to reduction resulting in an ARS controller hierarchical simplified MPN. The article also presents the practical application of the ARS controller built using the hardware platform and graphical programming environment LabView National Instruments (NI).

Probabilistic method for railway traffic control systems diagnosis

2019 ◽  
Vol 124 ◽  
pp. 133-140
Author(s):  
Waldemar Nowakowski ◽  
Tomasz Ciszewski ◽  
Zbigniew Łukasik
Keyword(s):  
Control Systems ◽  
Information And Communication Technologies ◽  
Traffic Control ◽  
Diagnostic Method ◽  
Negative Impact ◽  
Probabilistic Method ◽  
Railway Traffic ◽  
Information And Communication ◽  
High Level ◽  
Contemporary Development

Railway traffic control systems have a key role in ensuring the smooth operation of railway traffic. Therefore, the basic requirement, in addition to the implementation of necessary system functions, is continuous striving for ensuring the high level of reliability. Contemporary development of railway traffic control systems is associated with the application of modern information and communication technologies, which makes it possible to extend the functionality of these systems by the logging events and selfdiagnostics. However, there are no standards in this area, which considerably complicates the unification of scope and types of acquired diagnostic data as well as their analysis. This, of course, has a negative impact on the maintenance of the systems technical reliability. The authors of the paper have noticed this important problem and have proposed a new diagnostic method for railway traffic control systems, which is based on a probabilistic inference. They also verified the developed diagnostic method by testing it on the level crossing protection system. The obtained results have proved the correctness of the adopted railway traffic control systems diagnosing concept.

scholarly journals Design and Simulation of a Decentralized Railway Traffic Control System

2016 ◽  
Vol 6 (2) ◽  
pp. 945-951 ◽  
Author(s):  
T. Kara ◽  
M. Cengiz Savas
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Traffic Management ◽  
General Structure ◽  
Railway Transportation ◽  
Railway Line ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Traffic Management System

With the increasing use of railway transportation, various methods have been developed for the control and management of train traffic. Train traffic control systems that are currently in use are overwhelmingly centralized systems. In this study, the development of the general structure of railway traffic control techniques is examined, centralized and decentralized control systems are investigated, and an alternative train traffic control system, the Decentralized Train Traffic Management System (DTMS), is suggested. Simulation results on the possible application of the proposed method to a railway line in South-East Turkey are employed to evaluate the performance of the developed system.

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