• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.20 no.10
• /
• pp.1-9
• /
• 2006

The emergency lighting plan for underground space should be done with consideration of characteristics of the space. In terms of utilizing the Depthmap program from the Space Syntax theory, it is possible to analyze space quantitatively. Integration and intelligibility are major induces of this theory and we can use them as emergency lighting design parameters. For this study, human behaviors and survivor's evacuation routes in fire emergencies are analyzed through literature review. Based on those results, this study suggests the methodology of emergency lighting plan in underground space.

• Proceedings of the KIPE Conference
• /
• 2020.08a
• /
• pp.443-444
• /
• 2020

비상발전기를 이용한 독립 전원시스템에서 유도전동기를 직입기동 할 경우 큰 돌입전류로 인하여 과대한 발전기 용량이 요구되고 있으며, 이를 개선하기 위해 다양한 소프트-스타트 기동 방법이 사용되고 있다. 본 논문은 비상발전시스템에서 유도전동기 기동 시 발생하는 돌입전류를 저감하기 위해 비상발전기를 이용한 소프트-스타트 기동 방식을 제안한다. 또한 제안된 방식이 타당성을 검증하기 위해 시뮬레이션을 한 결과 제안된 방법을 적용 시 돌입전류가 저감하였다.

• Journal of the Society of Disaster Information
• /
• v.16 no.2
• /
• pp.392-401
• /
• 2020

Purpose: This study analyzes the operating characteristics of a lithium ion capacitor that can be used as a standby power supply in an emergency, and determines whether the standby power supply is abnormal even by measuring the voltage using a linear proportionality characteristic during charging and discharging. The aim is to provide an experimental basis that can be done. Method: As a method for this study, first, analyze the operation principle and characteristics of the existing backup power supply and lithium ion capacitor, and then measure the voltage of the lithium ion capacitor according to the configuration and system block diagram of the induction lamp used in the experiment. We proceed with the test of the measured value of discharge power for each voltage band to check the amount of power held by the battery and the operation test experiment using induction lamps. Results: Just by checking the charging voltage using the linear proportional characteristics of lithium ion capacitors, it provides a basis for accurately inferring the effective operating time of induction lamp lamps. Conclusion: In the event of a disaster, the lithium ion capacitor is used as a spare power supply for emergency induction lamps to prevent complete discharge of emergency induction lamps, to prevent the problem of performing normal operation of the standby power supply, and to use only a simple voltage measurement to reserve power. It was intended to suggest many uses for evacuation equipment application in the future by making it possible to check whether the device is abnormal.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.48 no.4
• /
• pp.142-152
• /
• 2011

In general, existing emergency evacuation guiding systems depend on visual techniques like emergency lights or LEDs. Actually people in the case of fire emergency condition may not obtain a range of view because of smoke from the fire. This paper introduces a technique to design an emergency guiding system using directivity sound to cope with this problem. In this case all speakers are serially connected for audio signal transmission in a serial fashion to achieve convenient speaker installation. Floyd algorithm is used to find shortest evacuation paths. Because serially connected multi-channel speakers are weak in case of disconnection, this paper uses a technique to solve the diagnostic problem. In the proposed system, a PC based on the USB protocol is used for control and observation. The system has achievements, such as increasing evacuation rate under emergency conditions, and serial transmission of audio signal for easy maintenance and low installation cost.

• The Journal of the Convergence on Culture Technology
• /
• v.7 no.4
• /
• pp.765-778
• /
• 2021

The purpose of this study is to prevent fire accidents in advance by deriving prior knowledge among groups about temporary fire-fighting facilities of workers at construction sites and devising appropriate improvement measures. The findings are as follows.First, in the case of fire extinguishers, statistical attention was paid to the contractor, supervisor, partner worker and fire extinguisher manager between designations. 87% of fire managers and 70% of facility supervisors said fire extinguisher management managers needed to be designated for each type of construction, which requires designation of fire extinguisher management managers, frequently checking and relocating. Second, in the case of simple fire extinguishing facilities, statistical attention was paid to the application of penalties for unauthorized use of fire extinguishing facilities with construction companies, supervisors, and business partners.Third, in the case of emergency alarm measures, statistical attention was paid to the application of emergency alarm sound to temporary broadcasting facilities with construction works, supervisors, and business partners.Fourth, in the case of induction, statistical attention was paid to the application of connection between construction works, supervisors, and partner workers, such as passage guidance, emergency lighting, etc.It was found that 65% of construction workers and 55% of electrical workers had different applications such as aisle guidance and emergency lighting for each type of business partner. In order to resolve blind spots such as evacuation zone guidance due to the structure of the building, it is necessary to easily distinguish the direction of the entrance door from a long distance by applying it in conjunction with passage guidance lights and emergency lighting.

• Journal of Korea Multimedia Society
• /
• v.11 no.11
• /
• pp.1547-1554
• /
• 2008

This paper proposes a fire shunt guidance system model based on rule, it presents suitable shunt route in real-time according to collected fire information of the building inside using wireless sensor networks. So, this system model is composed of the sensor alert module, the behavior suggestion module, and the emergency device control module. The sensor alert module uses rule-base algorithm that monitored the information to collect periodically in wireless sensor networks. And, the behavior suggestion module proposed a suitable behavior, this module supports to judge the fire area with danger sensor list. Additional, the emergency device control module controls a related emergency device according to the suggested behavior and to present on a control screen. We experiment the fire shunt guidance system based on Internet Web for operation verification of the proposed system. Consequently, this study supports people safety with the behavior suggestion according to the context information when an emergency situation happens.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2011.11a
• /
• pp.462-465
• /
• 2011

최근 우리나라에서는 대형 화재사고가 빈번히 발생함에 따라 그로 인한 재산 및 인명피해가 날로 증가하고 있는 실정이다. 따라서 건축물 내에서 화재가 발생할 경우 인명피해를 최소화하기 위하여 피난유도설비의 설치를 의무화하고 있다. 지금까지 일반적으로 가장 널리 사용되고 있는 피난유도설비로는 유도등이 있으며, 최근 들어 피난유도선의 설치도 다중이용업소를 중심으로 점차 확대되어가고 있는 추세이다. 피난유도설비는 평상시 이용되는 교류 상용전원에 의해서뿐만 아니라 비상시 이용되는 직류 비상전원에 의해서도 정상적으로 작동되어야 하기 때문에, 피난유도설비의 전원장치는 주어진 전원으로부터 주어지는 교류 또는 직류를 발광부에 맞게 일정한 전압과 주파수로 변환시켜주어야 한다. 실제로 LED(발광다이오드) 유도등은 상용전원으로부터 220V의 교류를 받아서 전원장치에서 정류변환을 통해 얻어지는 낮은 전압 24V의 직류를 이용하며, 대부분의 유도등 백라이트로 사용되고 있는 CCFL(냉음극형광램프)에는 상용전원으로부터 220V, 60Hz 교류를 인가받아 전원장치에서 정류 역변환을 통해 만들어진 100kHz의 고주파 교류가 공급된다. 더욱이 유도선의 전원장치에서는 상용전원 220V, 60Hz의 교류를 인가받아 정류 역변환 및 교류변환 과정을 차례로 거쳐 최종적으로 100V, 400Hz의 교류로 전환하여 TFEL(박막전계발광) 소자로 전송하게 된다. 한편, 상용전원이 차단된 상태에서도 전원장치는 마찬가지로 비상전원으로부터 24V의 직류를 공급받아 인버터를 통해 역변환 하여 100kHz의 고주파 교류를 만들어 주거나 추가적인 교류변환을 거쳐 100V, 400Hz의 교류로 변환시켜 내보낸다. 본 연구에서는 상대적으로 복잡한 전력변환 회로들을 포함하고 있는 유도선의 전원장치를 개선하여, 전원장치의 연결가능길이를 기존의 60m에서 최대 100m까지 연장시킴으로써, 터널이나 지하도와 같은 곳에서 특히 경쟁력을 갖게 될 것으로 기대된다.

• Fire Science and Engineering
• /
• v.14 no.1
• /
• pp.22-26
• /
• 2000

Emergency lamp is installation usage on an emergency situation or firing. It's an offer at least of brightness. It's lighting to common source usually. It's transferred to reserve battery on power stoppage. This emergency lamp is lighted from solar cell system. The solar cell should be operated at the maximum power point. This paper proposes the new control method that half-bridge inverter using the solar cell can operate emergency lamp.

• Journal of Korea Society of Industrial Information Systems
• /
• v.11 no.1
• /
• pp.7-12
• /
• 2006

In this paper, we develop a control system with fire receiver and emergency light that controls (manages) emergency door by wireless signals which prevents crime but also helps evacuate in (fire) emergency. This automatic door operator can be installed on any buildings which have a problem of opening or shutting emergency doors, and it is especially good for buildings with high fire vulnerabilities such as complex buildings, apartments and multistoried buildings without easy control of rooftop doors.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2017.05a
• /
• pp.69-70
• /
• 2017

As the industry develops, the size of buildings and ships are getting bigger and more complicated. In such a complex space, emergency evacuation systems are required because of the possibility of casualties when an accident situation occurs. However, because present systems are composed of basic devices, such as alarms, emergency exit signs, and announcement regarding the situation and inform only the least information to evacuees, evacuees are not able to judge objectively. To solve these problems, various evacuation algorithms have been proposed. However, these studies aim to search evacuation routes based on specific risk factors or to model the effects of bottlenecks in evacuation situations. Therefore, there is a limit to apply to real systems. Therefore, we propose algorithms to search the optimal evacuation route considering various risk factors such as fire and bottleneck in evacuation situations and to be applicable in actual situation in this paper. Performance evaluation using computer simulations showed that the proposed scheme is effective.