• 터널과지하공간
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• 제15권1호
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• pp.61-70
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• 2005

본 연구에서는 장대 터널 화재시 연기의 거동 특성 파악과 피난연락갱의 설치간격을 결정하기 위하여 축소 모형실험을 실시하여 그 결과를 분석하였다. Froude 상사를 기본으로 1/50로 축소하여 20 m의 모형 터널을 제작하여 실험하였다. 터널 내 20 MW의 화재가 발생 하였을 경우 CO의 전파 속도와 거리와의 관계를 이용하여 피난연락갱의 위치를 검토한 결과, 승객들의 피난시간은 6분이 적절하나 화재시 승객들의 심리적 상태를 고려하여 1분여의 지체시간을 생각하면 실제의 피난시간은 5분 정도가 될 것이므로 최대 간격 250m로 대인용 피난연락갱을 설치하는 것이 바람직할 것으로 판단되었다.

• International Journal of Internet, Broadcasting and Communication
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• 제16권2호
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• pp.218-226
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• 2024

According to the actual situation of a university, the emergency evacuation simulation is modeled based on the physical sign, evacuation speed and personnel ratio using the pathfinder software.The experimental construction export utilization rate is compared with the preliminary simulation scenario. The simulation results show that the utilization rate of evacuation stairs and evacuation exits is significantly improved.The optimized solution can provide the most effective evacuation passage, and the research results can provide the basis for the rational planning and management of evacuation passage in university experiment building.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
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• pp.133-138
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• 2009

The purpose of this study is to present an alternative plan in order to reduce the required time to flee from the inside of the gosiwon in danger. The data were derived from changing the width of corridors and emergency exits and the number of stairs in the building EXODUS, which is computer simulation program, The analyzed conclusions from the data are following as below (1) Increasing the exits and the number of stairs are efficient to reduce the accumulated time for standing by. (2) Increasing the number of stairs is efficient to decrease the distance to get out of the building to exit. (3) Increasing the number of stairs is efficient to reduce the time to get out of the building to exit.

• 가정과삶의질연구
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• 제26권5호
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• pp.75-89
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• 2008

The purpose of this study is to understand the physical accessibility of the child care centers for disabled children in Japan. Fifteen centers located in Tokyo, Japan were surveyed through sketching, measuring, taking pictures, and observation. To understand the user's needs. the directors of the centers were interviewed. As a result,the followings suggestions were proposed. First, when the entrance of the center is close to the road, careful design for the entrance area is required to secure the safety of children using wheelchairs. If possible, a fence or door between the corridor and entrance is necessary. Second, most aspects of accessibility are pretty well designed. But a canopy over the entrance area is required to escape the rain. Third, a wider corridor space is desirable for storing and driving wheelchairs and for special equipment for the disabled. Forth, because the emergency exits were installed but not used, the new and safer emergency exits should be installed. These results will be a good case reference for developing Korean design guidelines for the children with disabilities.

• 터널과지하공간
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• 제17권5호
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• pp.337-349
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• 2007

터널은 매년 그 연장이 길어지고 차선수도 증가하여 초 장대, 대 단면의 도로터널이 급격히 증가하는 추세다. 이런 추세에 따라 터널의 안전에 관련한 설계 시공 운영에 대한 철저한 대비가 어느 때보다 요구되는 실정이다. 도로터널 내 자동차와 자동차의 추돌과 충돌, 운전 부주의로 인접한 고형 구조물과 충돌, 자동차의 결함으로 인한 자체적인 발화 등으로 대형사고가 발생하여 인명과 재산에 미치는 영향이 크게 될 가능성이 높다. 따라서 이런 사고를 방지하기 위하여는 현재까지의 경험과 외국의 사례를 기초로 터널 내 비상시설과 방재시설을 초 장대터널의 길이와 규모에 적합한 기술적, 관리적 문제를 상정하고 그 내용을 설계에 반영하도록 하여야 할 것이다. 본 기사에서는 이와 관련된 내용을 점검하고 개선 방향을 제시하고자 한다.

• 대한안전경영과학회지
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• 제20권1호
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• pp.33-40
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• 2018

The rate of fire in buildings is gradually increasing in these days and the damage of property are severely increasing. This study suggests a methodology that provides information of the emergency exits based on indoor location services. The methodology uses determination technology and the latest update of indoor map generation via the built-in sensors of smartphone. This paper enhances the accuracy of indoor localization, and also it is to study how to provide exact indoor layout for rescuing the workers in emergency, such as fires and natural disasters.

• Journal of Information Technology Applications and Management
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• 제26권5호
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• pp.41-56
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• 2019

Recently great loss of life and property is occurring because of fire, natural disaster, earth quake, tsunami and so on. People spend 80~90% of their time indoor environment like office, supermarket, campus. Therefore Indoor navigation and guidelines system became so essential for most of all. Incase of emergency we must be careful earlier, in such a cases 5G kind of new technology may also cannot work. So immediate action and quick routing notification for guidelines and protection is the most. Considering this issue We proposed indoor evacuating guidance system based on microcontroller Wi-Fi board for Indoor APP using mobile. Focusing various kind of technology like, ok google, voice search APP we purposed node architecture based system. When we listen fire alarm while living inside the room. Then to be safe we connect with server and start Arduino UNO+IoT ESP8266 Wi-Fi shield version1-IoT module to store data in MySQL DB server. We make application to escape out from the building up-to the three exits giving information from source point to destination. Our program can send information to the users emergency location and situations. For this when the user get sound or vibration in their mobile device it indicate fire out near by. At that time we update message from Arduino to DB server for the fixed current position inside the building which give routing signal for that fire out location by changing values from 0 to 1. We have user in point 10 where user is near by. Later we detect Wi-Fi signal form Nodemcu as room of each floor and try to connect with user. Main purpose of this paper is to save life of people in short time and find out the shortest path up to nearest exits in the time of emergencies and rescue them.

• 한국정보통신학회논문지
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• 제22권4호
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• pp.569-574
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• 2018

본 논문에서는 동적으로 설정되는 피난 유도 표지에 실시간 화재 상황을 반영한 최적의 피난 경로를 제시하는 LoRa 기반 피난 유도 체계를 설계하고 구현한다. 각 피난 유도 표지는 전후좌우를 나타내는 4개의 LED 지시등으로 구성되고 화재 발생 시 실시간으로 계산된 최적의 대피 경로를 화살표로 표시한다. 제안 알고리즘의 검증을 위해 동적인 화재 상황을 모의 생성하는 시뮬레이션 환경을 구축하여 다양한 지점에서 화재가 발생했을 때 각각의 피난 유도 표지가 정확한 피난 경로를 안내하는지 여부를 검증하였다. 또한 LoRa 기반 무선통신의 성능 확인을 위해 실내, 실내 대 실외, 실외 환경에서 데이터 전송률을 측정하였다. 제안하는 시스템은 다수의 피난 유도 표지 설치 외에는 시스템 운영을 위한 추가 설비가 필요 없다는 측면에서 대형 건물은 물론 중소형 건물에도 쉽게 적용할 수 있다.

• 대한임베디드공학회논문지
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• 제10권5호
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• pp.281-296
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• 2015

This paper describes a novel disaster evacuation system using embedded systems such as smart devices for crisis and emergency management. In indoor environments deployed with the Bluetooth Low Energy(BLE) beacons, smart devices detect their indoor positions from beacon messages and interact with Map Server(MS) and Route Server(RS) in the Internet over the LTE and/or Wi-Fi functions. The MS and RS generate an optimal path to the nearest emergency exit based on a novel graph generation method for less route computation, called the Disaster Evacuation Graph(DEG), for each smart device. The DEG also enables efficient processing of some constraints in the computation of route, such as load balancing in situation of different capacities of paths or exits. All data interfaces among three system components, the MS, RS, smart devices, have been defined for modular implementation of our disaster evacuation system. Our experimental system has been deployed and tested in our building thoroughly and gives a good evidence that the modular design of the system and a novel approach to compute emergency route based on the DEG is competitive and viable.

• International Journal of Advanced Culture Technology
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• 제5권1호
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• pp.58-63
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• 2017

Emergencies and disasters can happen any time without any warning, and things can change and escalate very quickly, and often it is swift and decisive actions that make all the difference. It is a responsibility of the building facility management to ensure that a proven evacuation plan in place to cover various worst scenario to handled automatically inside the facility. To mapping out optimal safe escape routes is a straightforward undertaking, but does not necessarily guarantee residents the highest level of protection. The emergency evacuation navigation approach is a state-of-the-art that designed to evacuate human livings during an emergencies based on real-time decisions using live sensory data with pre-defined optimum path finding algorithm. The poor decision on causalities and guidance may apparently end the evacuation process and cannot then be remedied. This paper propose a cloud connected emergency evacuation system model to react dynamically to changes in the environment in emergency for safest emergency evacuation using IoT based emergency exit sign system. In the previous researches shows that the performance of optimal routing algorithms for evacuation purposes are more sensitive to the initial distribution of evacuees, the occupancy levels, and the type and level of emergency situations. The heuristic-based evacuees routing algorithms have a problem with the choice of certain parameters which causes evacuation process in real-time. Therefore, this paper proposes an evacuee routing algorithm that optimizes evacuation by making using high computational power of cloud servers. The proposed algorithm is evaluated via a cloud-based simulator with different "simulated casualties" are then re-routed using a Dijkstra's algorithm to obtain new safe emergency evacuation paths against guiding evacuees with a predetermined routing algorithm for them to emergency exits. The performance of proposed approach can be iterated as long as corrective action is still possible and give safe evacuation paths and dynamically configure the emergency exit signs to react for real-time instantaneous safe evacuation guidance.