• Title/Summary/Keyword: System Operational Concept

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Development of Multi-Train Traffic Simulator considering High-Speed Line (고속선을 고려한 다중열차주행 시뮬레이터 개발)

  • 김동희;김영훈
    • Proceedings of the KSR Conference
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    • 2001.05a
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    • pp.58-65
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    • 2001
  • Many changes in the railway environment has directly affected to the railway company. To cope immediately with the influence of environment and to promote productivity, the railway company has to introduce an efficient train operation system and related core technologies. The railway system is composed or large-scale infrastructures ann high-cost trains. Simulation method is one or core technologies and also is efficient tool for planning and analyzing this kind of complex system. The purpose of this research is to develop multi-train traffic simulator considering high-speed train for GyongBu-Line. To achieve this objective, the elements of railway system was analyzed, and as a result, a data structure modeling for the railway system such as rail-Tine infrastructure, rain, timetable and operational route is presented. The developed simulator is composed of three major part : input-module, main-module, and output module. The concept and brief explanation of each module will be treated.

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Introduction of Military Nanosatellite Communication System Using Anti-Jamming and Low Probability of Detection (LPD) Waveforms (항재밍/저피탐 웨이브폼이 적용된 군 초소형 위성 통신체계 소개)

  • Ju Hyung Lee;Hae-Won Park;Kil Soo Jeong
    • Journal of Space Technology and Applications
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    • v.3 no.2
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    • pp.144-153
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    • 2023
  • The existing military satellite communication system was based on geostationary satellites equipped with special communication payloads against enemy's jamming and signal reception. With the advent of new weapon systems such as unmanned systems, the need for low-orbit satellite-based communication system is increasing. This paper introduces various waveform technologies suitable for cube satellite-based communication system and the operational concept of a future military nanosatellite communication system.

Analysis and Test of CBTC Wireless Communication System in KyungSan test Line (II) (경산시험선 CBTC 시스템용 무선통신시스템 시험(2))

  • Ryu, Sang-Hwan;Cho, Bong-Kwan;Lee, An-Ho;Hwang, Hyeon-Chyeol;Yang, Doh-Chul
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2735-2744
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    • 2011
  • Korean-Automated Guideway Transit (K-AGT) was successfully developed through Light Rail System Development Project. Since then, the domestic development rate of on-board signalling system of light rail has been improved up to 90% by Practical Utilization Project of Light Rail. After utilization project, furthermore, POSCO ICT has developed the wayside signalling system of CBTC, including wireless communication equipment. KRRI carried out the performance test of the wireless communication, interfacing and using the other CBTC equipments of KyungSan Test Line so as to see whether it conforms IEEE 802.11x, international communication standard in view of operational concept of CBTC. In this paper, we presents analysis results of roaming test while train runs.

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Analysis and Test of CBTC Wireless Communication System in KyungSan test Line (I) (경산시험선 CBTC 시스템용 무선통신시스템 시험(1))

  • Cho, Bong-Kwan;Ryu, Sang-Hwan;Lee, An-Ho;Hwang, Hyeon-Chyeol;Park, Gi-Su
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2731-2734
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    • 2011
  • Korean-Automated Guideway Transit (K-AGT) was successfully developed through Light Rail System Development Project. Since then, the domestic development rate of on-board signalling system of light rail has been improved up to 90% by Practical Utilization Project of Light Rail. After utilization project, furthermore, POSCO ICT has developed the wayside signalling system of CBTC, including wireless communication equipment. KRRI carried out the performance test of the wireless communication, interfacing and using the other CBTC equipments of KyungSan Test Line so as to see whether it conforms IEEE 802.11x, international communication standard in view of operational concept of CBTC. In this paper, we presents the test plan, test items, and the analysis results of maximum communication distance tests between on-board and wayside radio sets.

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Continuous Surveillance and Diagnostics System Using Neural Network (인공 신경 회로망을 이용한 핵물질 거동 감시 시스템 개발)

  • 최재형;한명철;박영수;김호동;홍종숙
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.1182-1185
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    • 1995
  • This paper presents a novel technology for unattented continuous monitoring of radioactive material in hot cell environments. In this monitoring system, the surveillance camera data and NDA data are time synchronized and integrated into the same dimension through data processing. The integrated information is then fed into a neural network to generate diagnostics through data processing. the integrated information of the concept is tested for a spent nuclear fuel transprotation in an operational hot cell at KAERI. The presented integral part of the multi-sensory system and the analytical paradigm may provide an effective technologyical alternative for safeguarding new conceptual hot cell facilities, namely the Dupic facility.

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Development of Automation System for Press Line (대형 프레스용 자동화 시스템 개발)

  • 김순철;권용수;한상동;노태정;안병규
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.11a
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    • pp.806-809
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    • 1996
  • The present development relates to an apparatus for loading or unloading a workpiece, and more particularly, to an apparatus for loading or unloading a workpiece from a press die or supplier An apparatus for loading or unloading a workpiece has been installed in a press in order to load or unload a workpiece from a press die. There has been known such a loading or unloading apparatus as the apparatus can feed a workpiece in not only the horizontal direction but also in the vortical direction. Press working system in automotive factories are now switching over to a transfer press work ing system. The current problem to be sieved immediately is to automate the existing manual press lines for the manpower saving and speedy production. “Automation system for press line”has just been developed to meet the above trend. The loader and unloader are development under the design concept for high performance, easy control and operational safety to meet the more extensive.

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A New Approach for Global Operational Model Implementation of Electronic Bill of Lading (전자선하증권의 글로벌 운용 모델을 위한 개선방향과 과제)

  • Lee, Choong-Bae;Jung, Yong-Kyun
    • International Commerce and Information Review
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    • v.9 no.3
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    • pp.161-180
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    • 2007
  • The electronic bill of lading system replacing with traditional paper B/L has been evolved from SeaDocs and CMI to Bolero system. Therefore e-B/L is considered as an evolving concept rather than fixed one because it has been changed with development of information technology. Bolero system designed to replicate all functions of a paper B/L has some limitation to be utilized as an e-B/L in changing international business arena because it has a centralized model. Therefore it is considered to be important that the current e-B/L operating system needs to be diversified. This paper aims to provide three types of the operating model of global e-B/L to be applied with feasible solution coping with the current problems, which is expected to contribute to the utilization of electronic bill of lading.

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A Research on Naval Electronic Warfare System Engagement HILS Technology (해상 전자전체계 조우 HILS 연구)

  • Shin, Dong-Cho;Lee, Jeong-Hoon;Ryu, Si-Chan
    • Journal of the Korea Institute of Military Science and Technology
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    • v.13 no.5
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    • pp.785-792
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    • 2010
  • This paper on the Research of Naval Electronic Warfare System HILS(Hardware In the Loop System) describes the EW engagement HILS construction method for evaluation of the operational concept analysis on active RF Decoy in staying in the air and the deceit ability to anti-ship missile seeker. We obtain the EW M&S technology of EW engagement HILS and EW efficiency analysis from this project. This Naval Electronic Warfare System HILS technology will support Active Decoy Development Project and any other HILS of EW weapon in KOREA ARMY/NAVY/AIR FORCE.

Structural Safety Evaluation of Hydraulic Steering System for Ship (선박용 유압 조타 시스템의 구조적 안전성 평가)

  • Lee, Moonhee;Son, Insoo;Yang, Changgun
    • Journal of the Korean Society of Industry Convergence
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    • v.23 no.4_2
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    • pp.661-667
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    • 2020
  • The optimal shape modeling of core parts through 3D modeling and structural analysis for the development of small and medium-sized ships. The goal is to improve the efficient structure of the hydraulic system for controlling the rudder among the core steering parts in small and medium-sized ships. Through 3D modeling and structural analysis, a new concept of tiller parts and a double-acting hydraulic cylinder control system were proposed and operational structural stability was evaluated. Structural analysis of the three different tiller designs that can be replaceable onto existing fishing vessels was conducted to derive the final shapes. The emphasis was placed on evaluating the structural stability of the key drive components, the tiller, pin, and cylinder rodin the maximum torque condition of the hydraulic cylinder.

A Systems Engineering Approach for CEDM Digital Twin to Support Operator Actions

  • Mousa, Mostafa Mohammed;Jung, Jae Cheon
    • Journal of the Korean Society of Systems Engineering
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    • v.16 no.2
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    • pp.16-26
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    • 2020
  • Improving operator performance in complex and time-critical situations is critical to maintain plant safety and operability. These situations require quick detection, diagnosis, and mitigation actions to recover from the root cause of failure. One of the key challenges for operators in nuclear power plants is information management and following the control procedures and instructions. Nowadays Digital Twin technology can be used for analyzing and fast detection of failures and transient situations with the recommender system to provide the operator or maintenance engineer with recommended action to be carried out. Systems engineering approach (SE) is used in developing a digital twin for the CEDM system to support operator actions when there is a misalignment in the control element assembly group. Systems engineering is introduced for identifying the requirements, operational concept, and associated verification and validation steps required in the development process. The system developed by using a machine learning algorithm with a text mining technique to extract the required actions from limiting conditions for operations (LCO) or procedures that represent certain tasks.