• Proceedings of the KSR Conference
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• 2007.05a
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• pp.1665-1670
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• 2007

The On-Board Computer System Used for rolling stocks is one of the core equipments in trains, which deals with collecting real-time data of a train to display and record the train's status, control the train, and assist the driver and maintenance function. To design control software for such complex control system, in this paper UML based modeling technique is applied. A behaviorally expressive set of diagrammatic languages for modeling object-oriented systems is presented. It constitutes the constructive subset of UML, and also it enables model execution and full code synthesis.

• Proceedings of the KSR Conference
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• 2007.05a
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• pp.26-30
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• 2007

The total control system of main engine and transmission will be designed specially for use in drive systems in rail vehicles. The domestic diesel train was controlled by the relay control circuit. But the exportation to Europe and the Middle East was controlled by total control system. When the driver operates the train, the operating signals are sent to Voith Controller. The VTIC controls the main engine and transmission. The system communicates with TMS, and the data are displayed by TMS when the function switch at the display unit is operated. The this driving control system which is applied to reduce the maintenace load and cost at Turkey diesel multiple unit train is proposed.

• Journal of the Korea Safety Management & Science
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• v.16 no.4
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• pp.91-99
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• 2014

This study highlights the theme of human error of train drivers, conducting empirical analysis on the relationship between organizational culture, safety climates, safety behavior, and accident. The empirical test results based on questionnaires received from 223 train drivers working at A subway firm indicated that relationship conflict and psychological reward as the elements of organizational culture variables showed a significant positive effect on CEO philosophy, communication, and boss's leadership. And only boss's leadership showed a positive influence on safety behavior, which in turn showed a significant negative relationship with accidents.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.62 no.3
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• pp.431-436
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• 2013

A neutral section is installed around feeding substation(SS) and sectioning post(SP) that M phase and T phase are isolated in AC feeding system. Electric Train under "Notch-OFF" is operated by inertia within the neutral section. It causes disturbing the operation of electric trains for speed drop and driver's mistakes. A automatic changeover system with thyristor recently have taken under development. In the paper, it is introduced the configuration of train detection system and performance testing on automatic changeover system..

• Proceedings of the KSR Conference
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• 2002.10a
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• pp.38-46
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• 2002

This paper evaluates crashworthiness of KHST carbodies under the SNCF accident scenario (collision against a movable rigid mass of 15 tons at 110 kph) and the scenario of train-to-train collision at 30 kph. The numerical results show that the final design of the KHST power-car doesn't have a good response on crashworthiness. So an improved design has been suggested for it. The improved design has shown good performances in the viewpoint of energy absorption and survival space at several numerical simulations, such as the accident collided against a deformable dump truck of 15 tons at 110 kph, the driver's dummy analysis, and the accident of train-to-train collision for the first three units at 30 kph.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.21 no.48
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• pp.145-152
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• 1998

Driving performance is characterized by many things such as driver's experience period, age, ability of information processing and reaction time of control devices and so forth. However, each factor of driving performance is needed to help and screen a poor driver for safe driving. In this paper, driving performance was estimated by reaction of manipulating brake, accelerator, steering wheel and speed. Subjects were grouped by experience of accident and age. Combinations of every group were analysed. For all the dependent variables, only steering wheel and speed were shown to have significant difference, which could be regarded as visual information of speed and direction were the important factors to drive safely. Especially for tile elderly, it is needed to enhance their ability of visual information processing that is to be decreased with aging. Therefore driving simulator to train and screen the poor driver should be studied.

• International Journal of Railway
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• v.2 no.2
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• pp.50-59
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• 2009

Numerous train operating companies provide training by means of driving simulators. A detailed analysis in the course of the rail research project 2TRAIN has shown that the simulation technology, the purposes of training and the overall concept of simulator-based training are rather diverse (Schmitz & Maag, 2008). A joint factor however are weak assessment capabilities and the fact that the simulator training is often not embedded into the overall competence management. This fact hinders an optimal use of the simulators. Therefore, 2TRAIN aims at the development of enhanced training and assessment tools. Taking into account that several simulators are already in use, the focus lays on the extension of existing simulation technology instead of developing entirely new systems. This extension comprises (1) a common data simulation interface (CDSI), (2) a rule-based expert system (ExSys), (3) a virtual instructor (VI), and (4) an _assessment database (AssDB). The foundation of this technical development is an assessment concept (PERMA concept) that is based on performance markers. The first part of the paper presents this assessment concept and a process model for the two major steps of driver performance assessment, i.e. (1) the specification of exercise and assessment and (2) the assessment algorithm and execution of the assessment. The second part describes the rationale and the functionalities of the simulator add-on tools. Finally, recommendations for further technical improvement and appropriate usage are given. based on the results of a pilot study.

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.52 no.6
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• pp.278-285
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• 2003

This paper proposes a new position detection method for train speed control using the Phase Difference of Arriving. This method aims to apply to Automated Guide-way Transit systems, to be operated without driver. So it is absolutely required to range, calculate and decide a train position precisely. This system consists of Vehicle Radio Set(VRS) and Wayside Radio Set(WRS). The VRS transmits a wireless signal to the WRS and the controller calculate a straight line and curve line with Phase Difference of Arriving(PDOA) and an exact position using track date-base is calculated at next step.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.625-626
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• 2008

Today, the railway is very important in modern society means of public transport. Many people use the railway each day. On the other hand, with regard to railway accidents every year due to damage caused many casualties. In this paper, we propose railroad crossing accident prevention system for monitoring the situation based on OSGi for safe railway operations, about the same railroad crossing a dangerous place. This system, communication between the train and railroad crossing. So the information from the train crossing while a train driver was monitored in real time with more information than can help prevent accidents on the crossing. Using the OSGi framework, can be used widely in many hardware.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.877-882
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• 2005

The definition of multi-coupled operation is that coupled two trainsets is able to be operated one trainset identically. That is to say, the one driver, coupled two trainsets can operate the traction and braking system, control vehicle doors, phanto-graph, HVAC and passenger room lighting system etc, such as one trainset controlling. This study will provide high speed train design engineer with introducing multi-coupled operation system electrically and presentation automatic complex coupler mechanism, and then this paper will be applied to design next generation high speed train system such as Jun-la/Ho-nam line