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The objectives of railway construction and operation are transportation of passenger and freight safely and punctually. However, environmental effects such as noise, vibration, air pollution, underground water pollution and change of biosphere are emerged caused by train pass-bys. To avoid these adverse effects, new railway system has been developed around the world. This paper introduces LRT system and its environmental advantages. An environmental consideration for LRT design and adoptability for Korean situation are studied for the more.
The substructure of Light Rail Transit is mainly built on elevated structure that is composed of pier, girder and bridge deck. The bridge deck mostly has been made by field formed reinforced concrete so far. The objectives of the study are to find a method for design and construction of the new bridge deck. Ⅰ-beam is fabricated to make grid and concrete is poured on it at factory. This type can be used for maintenance of duty line by advantages such as good quality control and short construction time.
Recently, since demands of energy saving and efficiency for electric railway system have been increased, the study for electrical operation system is needed. Therefore, case study according to increase of energy consumption, investigate the actual conditions of the operation of electric cars and lightings were analyzed. From the results therefore, it is found that the energy consumption of electric car is much more winter than summer, because heating for protect of the air pipe frozen. But the energy consumption of electric equipment of station office is much more summer than winer, the reason for air-conditioner. In future, according to outdoor air temperature and ridership, wish to study about system that can operate cold, block heater automatically.
A subway is one of many public transportation means that contributes toward our society including seoul and offering of its service and expression of various information are in need due to users high demand. And there are various class of users. For that reason an optical communication network in the general contorl center and station buildings was installed. Considering the importance of safe operation of subway, optical communication exists to enhance customer satisfaction. Safe operation is essential as its level of reliance accounts for about 95%. this paper will look for ways to promote mutual information interchange and operation know-how with systems of the same kind and sharing a capable of effective operation of systems in place. Optical communication network in the metropolis railroad accepts various kinds of control networks and data networks for train operation. As occasion demands, this paper presents effective application scheme and specialized organization about an optical communication operating system.
The command of Subway is intended to adjust and control the train operation, and to play a key role of the total passenger transport and all kinds of affairs related to the safe train operation. Also, this can be considered as affairs to be controlled and operated by Total Traffic Control. For the purpose of developing the ATO system in using the new control technology by substituting the conventional ATS equipment, this technical document includes the technical points resulted from doing the replacement construction in the entire section of Subway Line 2 by Seoul Metro. The replacement work with the new ATO System should neither stop nor affect the system under operation while operating the current ATS System. The different systems should not interfere with each other while performing their individual affairs, and be composed to share the important data for the parallel operation. This technology is needed to proceed in assurance of a high degree of reliability.
The after 1974 capital region electric railroad is opened to traffic Koraill and Seoul metro adopt each other different power supply method and they operate and they are come. AC 25[kv] method voltage the insulation becomes larger standing distance highly, the case tunnel section which will introduce in the underground segment becomes on a large scale and the cost of construction increases to the city center and the underground segment adoption of DC method was many. To recent times with R-bar (Rigid-bar) introductions change of tunnel section the introduction of AC method came to be easy without in the underground segment. Operates sees in the electric protection where the Seoul metro and the Korail are different each other and, from the dead section segment the interior electric light to put out lights the passenger brings about inconveniently and the civil appeal which demands a power supply method unification occurs, within the company interchange electric railroad brazier safety improvement and maintenance expense curtailment etc. the flaw is original proposal, is a condition which finishes a feasibility study service about the power supply method fringe land. Interchange analysis of the DC electric railway it leads from the present paper and it compares under analyzing being it could be reflected to also the route which is in the process of actual using boil the strong point and a weak point of DC and AC method of the establishment route constructive at the time of and
In this paper, we present the piezoelectric generator for railroad application. Piezoelectric materials, usually crystals or ceramics, have the capability to generate a small amount of current, when they are subjected to mechanical pressure, such as pushing, bending, twisting, and turning. Recently, East Japan Railway Company (JR East) installed piezoelectric elements in the floors at ticket gates and other areas of Tokyo Station to test a system that generates power using the energy created by passengers passing through the gates. The amount of electricity it puts out was directly dependent on the number of people walking over it. Significantly higher power levels are expected from larger scale testing in Israel (Innowattech Company), where piezoelectric material is embedded under active walking street, road and airport as also railroad. Thus, the electric energy is generated from human or vehicle traffic and will use for e.g. road lightning.
본 논문은 Embedded System에 임베디드 운영체제인 Windows CE를 적용하고 개발프로그램을 이용한 『스피드게이트 컨트롤 시험기』 개발방법에 관해서 기술하고자 한다. 축적된 Know-How와 마이크로프로세서를 이용하는 임베디드 시스템으로 『스피드게이트 컨트롤러 시험기』를 개발 및 제작하여 현장 유지보수의 업무에 활용함으로써 작업의 편리성과 안정성을 도모하고 신뢰성을 향상 시킬 수 있다. 이로 인한, 장비의 높은 가동률과 시설물의 쾌적한 환경으로 질 좋은 고객 서비스가 제공된다. 또한, Embedded System과 Windows CE의 Visual 운영체제 적용으로 프로세서 및 Time Scheduler의 관리, Hard wear의 Resource 관리를 할 수 있게 되었다. 이러한 운영체제가 적용된 임베디드 시스템은 여러 가지의 제품개발과 다른 장비의 응용 및 시험기 개발이 가능하게 되어 본고에서는 스피드게이트 컨트롤러 시험기 개발당시의 문제점 및 현황과 시험기 개발과정, 현장적용 결과에 대해서 논하고자 한다. This thesis deals with application of Windows CE for Embedded System and the development methode of "Speed Gate Controller Tester“ taking advantage of development program. We can improve reliability, stability and convenience of maintenance work as use of "Speed Gate Controller Tester“ which was developed and applied "Embedded System" We can provide customers with more qualified service naturally because of the higher rate of operation which makes people use more pleasant and comfortable subway facility. And also it is possible to manage processor, time schedule and hardware resource as application of Embedded System and Windows CE. Embedded System applied OS Windows CE makes it possible to develop other various products, another application of equipment and tester. Thus this paper treats problems the moment developed and the present condition, development process, field application results.
FRP(Fiber Reinforced Plastic) support insulators for DC(direct current) were developed and their electrical and mechanical characteristics were investigated. Electrical tests were carried out to measure flashover voltages under common use frequency condition. Tensile and bending tests were performed for the mechanical characteristics. The test results showed that FRP support insulators have superior voltage resistances and strengths to porcelain insulators. Field test also is carried out to measure adaptation and to compensate the defect. The test result showed that a new product has no defect in electrical and mechanical.