• Title/Summary/Keyword: Traffic Light

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The Design and Implementation of Automatic Control System of Living Environment Based on Ubiquitous Sensor Network (유비쿼터스 센서 네트워크 기반의 생활환경 자동제어 시스템 설계 및 구현)

  • Yun, Ji-Hoon;Moon, Seung-Jin
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.1
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    • pp.1-6
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    • 2008
  • The ubiquitous sensor network technique is widely applied to variety of information fields such as home automations, logistics, traffic controls, public administrations, health and environment monitoring and etc. It is particularly useful in the areas where energy consumption is minimal and where continuous monitoring of the surrounding environments, which generates streams of data, are required. In this study, we have designed and implemented a living environment automatic control system which collects the streams of temperature, humidity, light and noise data of a simulated house setting in real-time fashion, then controls the home environment based on the collected data according to the users favorites. In order to differentiate the proposed system from the currently existing similar system, we have demonstrated not only the feasibility of collecting data using sensor network in the controlled environment but also the ability to control the various household equipments through wireless communications.

New Manufacture Process Technology of Flexible Flat Lighting used LED (LED를 이용한 플렉시블 면 조명의 신 제조 공정기술 개발)

  • Youn, Shin-Yong
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.65 no.2
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    • pp.142-150
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    • 2016
  • This paper developed new manufacture process technology of slim type flexible flat lighting product used lower power white LED. Flexible flat lighting is applied to letter sign lighting, traffic lighting, interior wall lighting, flat lighting, aquarium back lighting, wreath light etc. Main manufacture process technology were developed drawing software for electronics circuit, inkjet electronic circuit pattern and inkjet white ink coating. For pattern printing it was utilized for piezoelectonic inkjet head printing technology. Also high vacuum pressure laminating technology was waterproofing for LED flat lighting protection. Hence, form process technology we were manufactured for flexible flat lighting product of the power 12 W, input voltage 48 V and plane size $480{\times}480mm$. It acquired a these validity from experiment results.

A Study on the Economical Feasibility Analysis For Development of Dual Mode Trailer System

  • Kim, Kwang-Hee
    • Journal of Navigation and Port Research
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    • v.34 no.2
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    • pp.137-144
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    • 2010
  • In light of the growing traffic congestion problem and congestion cost, the container transport by railway has to be increased. The freight transport by railway can have decided advantages over trucks in terms of energy efficiency, emissions and cost for certain freight movements, just as transportation in the metropolitan region can have great advantages over driving truck. But the freight transport by truck should gain significant mobility benefits from a freight railway system. Thus, the DMT(Dual Mode Trailer) transport system which is coupled railway transport advantages with load transport advantages has been developed and used in the european countries. The DMT transport will therefore serve the areas required by transport organizers. The purpose of this paper is to estimate economical feasibility analysis for development of DMT transport system. Consequently, this study analyzed the characteristics of the DMT system. The horizontal load.unload system is being considered as an adoptable DMT system in consideration of the situation in Korea.

The Construction of Driverless Signaling System based on Communication for the Maglev Control (자기부상열차 제어를 위한 통신기반 무인 신호시스템 구축)

  • Kang, Deok-Won;Lee, Jong-Seong;Kim, Kyoung-Shik;Min, Young-Ki
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.519-534
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    • 2008
  • The Maglev travels at levitated status from the rail in some gab (about $8\sim10mm$). it make difference with the existing subway or the another LRV. The detection method of the train speed and the train position to be used at Maglev's signaling system differ with the existing subway or the another LRV's. so, the signal system construction of the new method is necessary. This paper describes the configuration and characteristic of the total signaling system (TTC/Wayside/Cab/Guide way system etc.) developed for Maglev, and the design concept of the signaling system based on the latest wireless LAN communication for driverless operation.

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Development of Municipal Vehicle Safety System (환경미화원 산업재해방지를 위한 청소차량 안전시스템 개발에 대한 연구)

  • Lee, Man-Soo
    • Journal of the Korea Safety Management & Science
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    • v.11 no.3
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    • pp.57-61
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    • 2009
  • Garbage cause an environmental pollution, unsightly mess, fouls an odor, and unpleasant feeling. Various measures to solve the problems are studying. And the garbage are collected and treated by the street cleaner. Street cleaner is working for long time in the street from dawn to the night. And many kind of accidents are aroused, like traffic and crushing accident by garbage truck. This kind of accidents is increased every year. To prevent the accident, street cleaner wear a fluorescent light uniform But a count measures for the fallen accident and crushing accident from the garbage truck are insufficient. In addition, a street cleaner dose not like to wear a working uniform because of inconvenience. Therefore this study try to find a safety system of garbage truck for reducing measure of accidents of street cleaner.

Localization Effort of Rail Grade Crossing Impact Analysis with GradeDec2000 (건널목 개선사업 효과의 계략적 평가 방법의 적용)

  • 조성훈;서선덕;권경숙
    • Proceedings of the KSR Conference
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    • 2001.05a
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    • pp.88-96
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    • 2001
  • Rail crossings are major accident-prone areas. Higher traffic volume, frequent rail operation, increased train speed all contribute to increased accident rate and severity In Korea efforts are being made to upgrade currently at-grade rail crossings to grade crossings. There is, however, no quantified analysis measures to analyse the impact of rail grade crossing, thus make it difficult to prioritize different projects under the budget constraints. Projects are selected based on the negotiation between Korea National Railway(KNR) and local governments. To shed light on the development effort for Korean procedure, GradeDec 2000 program of Federal Railroad Adminstration(FRA) was applied for Korean context. Case study involving three rail crossing was ca]lied out, and results are analyzed. Research efforts which need further attention are identified, research direction is analyzed considering local procedure, and issues in the application of the procedures are discussed in detail.

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Organizing tailored traffic light system with genetic algorithm (유전 알고리즘을 이용한 맞춤형 신호 체계 구축)

  • Park, Subeen;You, Jaehoon;Ryu, Hanho;Kim, Yeonjun
    • Proceedings of The KACE
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    • 2018.01a
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    • pp.129-132
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    • 2018
  • 교통 체증은 차량 이용이 대중화된 지금 많은 문제를 야기하고 있다. 교통 정체로 인한 시간 허비, 장시간 운전으로 인한 운전자의 피로 증가, 매연 배출로 인한 환경 오염 촉진 등 교통 체증은 사회적으로 무시할 수 없는 여러 문제들을 불러온다. 이에 본 연구는 신호 체계 개선에 초점을 두어 유전 알고리즘을 이용한 도시 규모의 유동성 연동 신호 체계를 구현하고자 하였다. 이를 위하여 교통 시뮬레이션 프로그램 SUMO를 이용하여 실험 환경을 조성하고, 4개의 사거리와 16개의 사거리, 그리고 선릉역 인근의 실제 도로망에서의 최적 신호 주기를 탐색하였다. 실험 결과 4개의 사거리의 경우 유전 알고리즘 적용 전의 초기 설정에 비해 자동차들의 평균 이동 시간이 31.1% 감소, 16개의 사거리의 경우 6.2% 감소, 실제 도로에서는 1.1% 감소함을 확인할 수 있었다. 따라서 유전 알고리즘을 이용한 새로운 교통 체계는 교통 정체를 완화하는 효과가 있으며 본 연구를 실제에 적용한다면 도시 규모의 도로망에서 시간대 별로 교통 흐름을 최적화하는 맞춤형 신호 주기를 구할 수 있을 것이다.

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An Experimental Study on the Performance of Wire Mesh Reinforced Porous Concrete (Wire Mesh보강 포러스콘크리트의 성능평가에 관한 실험적 연구)

  • 권혁준;이택우;김선용;박승범
    • Proceedings of the Korea Concrete Institute Conference
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    • 2000.10b
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    • pp.1227-1232
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    • 2000
  • In this study the mechanical properties of various wire mesh reinforcing porous concrete mixtures are investigated. A properly designed porous concrete pavements provides a durable riding surface. It also eliminates puddles and standing water, resulting in improved skid resistance. The most popular application is that of light-traffic volume roadways such as parking lots, resident roads, driveways, and sidewalks. Flexural strength and toughness index are examined for wire mesh reinforcing porous concrete. Type of Wire mesh is divided into three cases, A type, B type and C type. It shows A type is most excellent shape of destruction of slab specimen is similar to that of flexural specimen. The aim of this paper is to present the results of a pilot study undertaken to examine the extent to which wire mesh reinforced porous concrete can be used as a continuous paving materials.

A Study of Optical Characteristics for High Intensity LED (고휘도 발광다이오드(LED)의 광학적 특성에 관한 연구)

  • Hwang, Myung-Keun;Lim, Jong-Min;Shin, Sang-Wuk
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.2159-2161
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    • 2000
  • The LEDs are used for signal lights including traffic signals and telecommunication equipments. Advanced foreign countries are making R&D of ultra high intensity LEDs, and the LEDs are expected to new light source. Optical characteristics by measurements of 14 LEDs; each 2 of 3$\Phi$ R/G/Y LEDs, each of 5$\Phi$ Y/G/Y LEDs and each of high intensity 5$\Phi$ R/G/B/A/W LEDs. Comparison on chromaticity coordinate of high intensity 5$\Phi$ White LED by forward V/I.

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Study on Turnout System(Rubber Wheel Type) & Guideway for AGT (고물차륜용 경량전철 분기기 및 안내궤조에 대한 연구)

  • Park June-Taek;Kim Soon-Chul;Kim Jun-Sik;Lee An-Ho;Seong Tack-Ryong
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.349-355
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    • 2003
  • Traffic congestion caused by cverpopulation has a major detrimental effect on bringing about social and economic problems ia city area. Therefore Un order to maintain and sustain smooth flow of railway system, we are willing to introduce Light Rail Transit System. Rubber wheel type and guideway far AGT have been concentrated on our study Especially, the prototype of LRT turnout system has been developed. Furthermore, the structural analysis for the guideway system has been completed to secure reliability for the LRT system. In the near future, the tumout system of rubber wheel and guideway shall be applied in Korea. We hope reliability fer the system shall be secured without any major difficulties. As a result, we expect to expedite the localization of rubber wheel type and guideway for AGT.

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