Modelling of exploitation process of the railway traffic control device

2019 ◽  
Vol 124 ◽  
pp. 53-63
Author(s):  
Mieczysław Kornaszewski
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Technical Condition ◽  
Control Device ◽  
Railway Network ◽  
External Interference ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Control Devices ◽  
Traffic Control Devices

The basic purpose of railway traffic control devices is to ensure a high level of safety of moving trains on the railway network. The railway traffic control devices often work in difficult environmental conditions and are exposed to external interference. These circumstances require continuous analysis of the state of the railway traffic control system. With time, the system's technical condition deteriorates. When its technical condition is not satisfactory it is necessary to operate it and renew its state of use. The rational implementation of exploitation tasks of the railway traffic control system allows the introduction of mathematical modeling methods into exploitation tests. Using the mathematical model of the exploitation process of the railway traffic control system, it is possible to forecast e.g. reliability indicators of its individual objects. Knowledge of exploitation parameters should be used in making decisions in the process of managing the exploitation of the railway traffic control devices.

scholarly journals Issues of Railway Traffic Control Devices Availability in the Exploitation Process

2020 ◽  
Vol 50 (4) ◽  
pp. 181-203
Author(s):  
Paweł Drózd ◽  
Adam Rosiński
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Traffic Management ◽  
Review Of The Literature ◽  
Factors Affecting ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Determination Methods ◽  
Control Devices ◽  
Traffic Control Devices

AbstractThis article focuses exclusively on the issues of railway traffic control devices availability in traffic management. One of the factors affecting this availability are tests conducted during maintenance or repair works. A review of the literature in the field of test determination methods was conducted. Next, the railway traffic control system was described and the elements influencing availability were defined. Assumptions and an algorithm of the procedure were presented and the method of determining the tests was proposed.

scholarly journals Diagnostics of railway traffic control devices working on the railway line

2018 ◽  
Vol 19 (12) ◽  
pp. 101-105
Author(s):  
Mieczysław Kornaszewski
Keyword(s):  
Traffic Control ◽  
Technical Condition ◽  
Railway Line ◽  
Railway Traffic ◽  
Effective Removal ◽  
Control Devices ◽  
Traffic Control Devices

Railway traffic control devices are working on railway lines in different, often extreme exploitation conditions. The technical condition of these devices have an immense impact on the safety of passengers traveling by train and throughput of the railway line. Diagnostics of railway traffic control devices is very important. Continuously identification and observation of their damage allows for an effective removal and elimination of existing failures.

scholarly journals Analysis of the technical condition of railway traffic control devices using on Polish railways

2018 ◽  
Vol 19 (6) ◽  
pp. 513-517
Author(s):  
Mieczysław Kornaszewski
Keyword(s):  
Traffic Control ◽  
Technical Condition ◽  
Railway Transport ◽  
Railway Traffic ◽  
Condition Method ◽  
Control Devices ◽  
Traffic Control Devices

The article presents the analysis of the current technical condition of railway traffic control devices. Their technical condition, method of exploitation and maintenance have a significant impact both on the safety, efficiency of railway transport and the process of train movements on railway lines in Poland.

scholarly journals Selection of exploitation data from railway traffic control devices for the purposes of gathering and analyzing data processes from railway transport objects

2019 ◽  
Vol 2019 (5) ◽  
pp. 43-53
Author(s):  
Janusz Dyduch ◽  
Mieczysław Kornaszewski
Keyword(s):  
Traffic Control ◽  
Technical Condition ◽  
Reliable Data ◽  
Railway Transport ◽  
Railway Traffic ◽  
Decision Making Processes ◽  
Control Devices ◽  
Technical Systems ◽  
Traffic Control Devices ◽  
Selection Of

The evaluation of the technical systems reliability and safety requires collecting and processing of reliable data which characterizes the processes. The data from current exploitation is particularly important for decision-making processes. It can be used for creation of occurring exploitation phenomena models and allows to determine the expected object behaviour in the future. The railway traffic control devices often work in very difficult exploitation and environmental conditions. The information about their technical condition can be gathered and used for a proper prophylaxis as well as a predictive maintenance of railway traffic. It will allow to choose a maintenance strategy which will consist in optimal use of railway traffic control devices.

scholarly journals Functional Testing of Railway Traffic Control Device

2020 ◽  
Vol 64 (186) ◽  
pp. 91-96
Author(s):  
Paweł Drózd ◽  
Adam Rosiński ◽  
Lech Konopiński
Keyword(s):  
Traffic Control ◽  
Control Device ◽  
Functional Testing ◽  
Functional Tests ◽  
Railway Traffic ◽  
Control Devices ◽  
Traffic Control Devices ◽  
The Impact ◽  
Diagnostic Properties

The article presents the problems of functional tests of railway traffic control devices. The purpose and scope of the tests as well as the impact of testing on the SRK devices are presented. The methodology of selecting tests depending on the scope of research is proposed. For this purpose, the SRK devices were analyzed for functional and diagnostic properties. Keywords: functional tests, railway traffic control devices, tests

Functional tests of the ETCS and rail traffic control systems

2021 ◽  
Vol 133 ◽  
pp. 15-26
Author(s):  
Paweł Drózd ◽  
Adam Rosiński
Keyword(s):  
Traffic Control ◽  
Functional Model ◽  
Field Tests ◽  
Base Layer ◽  
Initial State ◽  
Railway Traffic ◽  
Control Devices ◽  
Traffic Control Devices ◽  
The Cost ◽  
The Impact

The paper presents the issues of railway traffic control devices testing and focuses on European Train Control System (ETCS) devices widely implemented in railways. The functions of the ETCS system, principles of operation are described. The basic telegrams transmitted in the track-to-train relation are listed. The process of designing and verifying the implemented data and what parameters are checked at the stage of field tests using the locomotive is briefly described. The functional model of the SRK devices, including ETCS elements, was presented, and the close relationship between the base layer of the railway traffic control devices and the ETCS was shown. Equipment testing reduces the availability of the rail network, engages staff, and generates costs. A test generation method is presented to minimize the impact. Two indicators are proposed for reducing the set of checks, the cost of checking and the information effectiveness. The cost of checking due to the problematic estimate is generalized, divided into three groups taking into account the difficulty and resource consumption of bringing the devices to the initial state and their operation according to the test. Therefore, the obtained set of checks is suboptimal and ensures complete coverage of the functions with tests, which is essential when testing devices. The tests are carried out using available setting commands and the implementation of tasks - entry and exit routes at the station. The proposed method is universal and can be applied to any railway traffic control device, regardless of the manufacturing technology. It is a non-invasive method in the structure of the tested devices and does not require additional hardware resources.

Development of a Reliable Railway Traffic Control System

2009 ◽  
Vol 42 (1) ◽  
pp. 172-177
Author(s):  
Krzysztof Grochowski ◽  
Sławomir Jasiński ◽  
Mariusz Maciejewski ◽  
Ireneusz Sitek
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Railway Traffic ◽  
Traffic Control System

Some aspects of project management in terms of design automation for railway traffic control devices

2018 ◽  
Vol 121 ◽  
pp. 411-421
Author(s):  
Paweł Wontorski ◽  
Andrzej Kochan
Keyword(s):  
Project Management ◽  
Traffic Control ◽  
Design Automation ◽  
Graphical Form ◽  
Project Management System ◽  
Railway Traffic ◽  
Selection Of Variables ◽  
Control Devices ◽  
Traffic Control Devices ◽  
The Impact

The article presents the concept of integration system of design automation and system of project management. A model was developed cooperation between the two systems on several levels, based on continuous monitoring of the design process and comparing the assumed values of the selected parameters from the actual values. The selection of variables transmitted based on the assumption of cooperation project management system with the system of design automation for railway traffic control devices, designed to support of designers. Due to the nature of projects for railway traffic control devices drew attention to the quality control of the project in the context of the safety and reliability of railway traffic control system, the impact of deviations from the schedule to the railway timetable, version compatibility, and changes in the chamfering work on objects with continuous rail traffic. The structure of the model is presented in graphical form.

scholarly journals Selected Issues of Safe Operation of the Railway Traffic Control System in the Event of Exposition to Damage Caused by Lightning Discharges

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5808
Author(s):  
Renata Markowska ◽  
Zofia Wróbel
Keyword(s):  
Control System ◽  
Power Systems ◽  
Traffic Control ◽  
Lightning Discharge ◽  
Lightning Protection ◽  
Current Standard ◽  
Protection Measures ◽  
Railway Traffic ◽  
Protective Devices ◽  
Traffic Control System

Lightning discharge becomes a serious source of interference and damage for electronic and electrical power systems. Safe and reliable operation of railway traffic control systems requires proper protection against the effects of lightning. However, the current standards on lightning protection, PN-EN/EN/IEC 62305, do not cover railway objects. Moreover, there are no other standards or recommendations dedicated to the railway. The paper is an attempt to apply the procedure of lightning risk management according to PN-EN 62305-2 to select the proper protection measures in railway objects. A case study for the signal box with installed relaying and digital stations of the railway traffic control system is analyzed. The analysis comprises calculations based on the current standard PN-EN 62305-2:2012 but including the issues specific to railway traffic control. The risks of lightning losses have been calculated for two cases: without lightning protection measures and with protection measures proposed to decrease the risks below the tolerable values. The results show that a practically effective solution to reduce the risks is applying surge protective devices with proper characteristics. Another way is replacing unshielded incoming lines with shielded ones of given shield bonding way, and supplementing it with surge protective devices when necessary.

scholarly journals Modeling of the operation of the reserve source of electric energy of railway traffic control devices

2018 ◽  
Vol 19 (12) ◽  
pp. 579-584
Author(s):  
Piotr Osa ◽  
Jerzy Wojciechowski ◽  
Marek Wójtowicz ◽  
Nikolai Osmolovskii
Keyword(s):  
Simulation Model ◽  
Traffic Control ◽  
Electric Energy ◽  
Power Source ◽  
Operating Conditions ◽  
Basic Part ◽  
Railway Traffic ◽  
Control Devices ◽  
Traffic Control Devices

The article presents issues related to the problem of modeling the work of a reserve source of electric energy for railway traffic control devices. The problems of srk devices and the construction and concept of powering them into electricity were outlined. The basic part presents a simulation model of the operation of a generator set, used as a reserve power source. Modifications of the model to work in the most important operating conditions are shown. The results of simulation calculations are presented.

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