• 제목/요약/키워드: Fire alarm

검색결과 257건 처리시간 0.021초

화재실험을 통한 주택용 연기감지기 응답특성에 관한 연구 (A Study on the Response Characteristics of the Residential Smoke Detector Depending on Controlled Fire Tests)

  • 사공성호;김시국;이춘하;정종진
    • 한국화재소방학회논문지
    • /
    • 제23권4호
    • /
    • pp.98-103
    • /
    • 2009
  • 본 논문은 연기감지기의 응답특성을 분석하여 주택용 화재감지기로 적합한지를 분석하고자 광전식연기감지기, 아날로그연기감지기, 단독경보형연기감지기를 시험체로 선정하여 UL 268에서 정하는 화재시험방법을 응용하여 화재성상(종이화재와 인화성액체화재)에 따른 연기감지기의 응답특성을 분석하고자 화재실험을 실시하였다. 실험결과 화재성상에 따라 연기감지기의 응답특성 차이가 나타나는 것을 확인할 수 있었다.

사찰 화재예방시스템의 개선방안에 관한 연구 (A Study on the Improvement of Anti-Fire System of Temples)

  • 공하성
    • 한국방재학회 논문집
    • /
    • 제8권4호
    • /
    • pp.87-90
    • /
    • 2008
  • 이 연구는 사찰의 화재 사례, 일본의 사찰 안전관리에 대하여 고찰 분석하였다. 그 결과를 토대로 사찰 화재예방시스템에 대한 개선방안 제안을 목적으로 하고 있다. 사찰 화재예방시스템의 개선방안으로는 첫째, 화재로 문화재 소실 등의 피해를 줄일 수 있도록 "문화재보호법"에 화재예방을 위한 규정 신설의 필요성 제기 둘째, 단독경보형 감지기 및 에어졸식 간이소화용구를 설치하여 화재의 조기발견 및 진화 그리고 인명피해를 최소화 방안 강구 셋째, 경미한 전기설비 설치공사에 있어서도 "국가기술자격법"에 의한 전기분야의 기술자격을 취득한 자가 시공할 수 있도록 "전기사업법령"상의 기준 마련 등이다.

PWM을 이용한 화재 감지를 위한 자외선 센서의 구동 방법 (Driving Method of Ultraviolet Sensor for Fire alarms using Pulse Width Modulation)

  • 임병현;고낙용;황종선;김영민
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2004년도 춘계학술대회 논문집
    • /
    • pp.31-35
    • /
    • 2004
  • We propose driving method of Ultraviolet sensor for fire alarms using pulse width modulation that used to fire detector with sensor of private-use detectable light energy as ultraviolet in energy of electromagnetic-wave type radiate from flame, when combustible burn with contain carbon,. Ultraviolet sensor is UV Tron using gas multiplication effect to current discharge and photoelectric effect of metal. To have high sensibility and to gain proper output voltage, it has high responsive performance. This research designed driving circuit with UV sensors and proposed method of false alarm reduced to resemble fire. the result propers the prevention and extinction of fire technique degree, certificated operation of detector.

  • PDF

자외선/적외선 불꽃감지기 소개 및 오동작 방지를 위한 연구 (Introduction of Ultraviolet/Infrared Flame Detector and Method for False Detection Prevention)

  • 임병현;고낙용;황종선;김영민;김종만
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2003년도 춘계학술대회 논문집 기술교육전문연구회
    • /
    • pp.8-11
    • /
    • 2003
  • We propose that when combustible burn with contain carbon, introduce fire detector with sensor of private-use detectable light energy as infrared and ultraviolet in energy of electromagnetic-wave type radiate from flame, method for correct discrimination to resemble fire produce false alarm of detector such as sun light, hot object radiation, are welding. This research using infrared sensor is pyroelectric infrared sensor based black body radiation theory. Ultraviolet sensor is uv Tron using gas multiplication effect to current discharge and photoelectric effect of metal. To have high sensibility and to gain proper output voltage, it has high responsive performance. This research introduced UV/IR compound type flame detector and proposed method of false alarm reduced to resemble fire. The result propres the prevention and extinction of fire technique degree, certificated operation of detector.

  • PDF

영상감시시스템에서 은닉마코프모델을 이용한 불검출 방법 (Fire detection in video surveillance and monitoring system using Hidden Markov Models)

  • ;김정현;강동중;김민성;이주섭
    • 한국정보처리학회:학술대회논문집
    • /
    • 한국정보처리학회 2009년도 춘계학술발표대회
    • /
    • pp.35-38
    • /
    • 2009
  • The paper presents an effective method to detect fire in video surveillance and monitoring system. The main contribution of this work is that we successfully use the Hidden Markov Models in the process of detecting the fire with a few preprocessing steps. First, the moving pixels detected from image difference, the color values obtained from the fire flames, and their pixels clustering are applied to obtain the image regions labeled as fire candidates; secondly, utilizing massive training data, including fire videos and non-fire videos, creates the Hidden Markov Models of fire and non-fire, which are used to make the final decision that whether the frame of the real-time video has fire or not in both temporal and spatial analysis. Experimental results demonstrate that it is not only robust but also has a very low false alarm rate, furthermore, on the ground that the HMM training which takes up the most time of our whole procedure is off-line calculated, the real-time detection and alarm can be well implemented when compared with the other existing methods.

전기화재 (ELECTRICAL FIRE)

  • 박헌식
    • 방재기술
    • /
    • 통권11호
    • /
    • pp.13-22
    • /
    • 1991
  • To understand electrical fire, the cause of it is classified into overcurrent, short circuit, leak, joint, overheat, accumulation of heat, spark, deterioration of insulation, static electricity, and lightning etc. and explained. And then by the precautions to it, proposed to the improvement of electric products, the completeness of safecty management and the use of alarm systems.

  • PDF

양방향 통신이 가능한 자동화재탐지설비(P형 1급 수신기)의 설계 및 동작특성에 관한 연구 (A Study on Design and Operation Performance of Automatic Fire Detection Equipment (P-type One-class Receiver) by Bidirectional Communication)

  • 이봉섭;곽동걸;정도영;천동진
    • 전기학회논문지
    • /
    • 제61권2호
    • /
    • pp.347-353
    • /
    • 2012
  • In this paper, authors will develop the quick and precise remote controller of automatic fire detection equipment (P-type one-class receiver) based on information communication technology (IT). The remote controller detects the fire and disaster in the building automatically and quickly and then activates the facilities to extinguish the fire and disaster, monitoring such situation in a real time through wire-wireless communication network. The proposed remote controller is applied a programmable logic device (PLD) micom. of one-chip type which is small size and lightweight and also has highly sensitive-precise reliabilities. The one-chip type PLD micom. analyzes digital signals from sensors, then activates fire extinguishing facilities for alarm and rapid suppression in a case of fire and disaster. The detected data is also transferred to a remote situation room through wire-wireless network of RS232c and bluetooth communication, and then the situation room sends an emergency alarm signal. The automatic fire detection equipment (AFDE) based on IT will minimize the life and wealth loss while prevents fire and disaster.

소방안전의식 지표개발 및 국민 소방안전의식 조사 연구 (Fire Safety Consciousness Indicators Development and National Fire Safety Consciousness Research)

  • 정무헌;박인선
    • 한국화재소방학회논문지
    • /
    • 제29권4호
    • /
    • pp.89-94
    • /
    • 2015
  • 본 연구는 국민 소방안전의식 수준에 적합한 눈높이 소방안전정책을 실행하는데 도움을 주기 위하여, 소방안전의식 지표를 개발하고 국민 소방안전의식을 조사하기 위한 목적으로 실행되었다. 이를 위하여 소방안전의식에 대해 정의를 하고 이를 효율적으로 측정할 수 있는 지표를 예방, 경보, 대피, 소화, 피해확대방지의 5가지 분야로 세분화하여 소방안전의식 측정지표를 도출하였다. 지표개발은 파라슈라만(Parasuraman) 방식을 이용하였으며 국내 외 선행연구 자료와 전문가 회의를 거쳐 개발하였다. 개발된 지표를 활용하여 한국갤럽에 의뢰하여 국민 소방안전의식을 조사하였고 이를 분석한 결과 대피의식이 가장 낮았고 다음이 소화, 경보, 예방, 피해확대 방지 순으로 나타났다.

반도체공장의 NFPA921에 의한 비화재보 원인조사 방안 (A Study on the Causes of False Alarm by NFPA921 in Semiconductor Factory)

  • 홍상혁;공하성
    • 대한안전경영과학회지
    • /
    • 제25권4호
    • /
    • pp.87-94
    • /
    • 2023
  • This study analyzed and identified various causes of caustic alarms of 163 fire detectors that occurred from January 2019 to December 2021 at domestic semiconductor manufacturing plants equipped with about 30,000 fire detectors, and proposed a new non-fire prevention cause investigation plan by applying the NFPA 921 scientific methodology. The results of the study are as follows. First, in terms of necessary recognition and problem definition, an analog detector and an integrated monitoring system were proposed to quickly determine the location and installation space information of the fire detector. Second, in order to prevent speculative causes and errors in various analyses in terms of data analysis and hypothesis establishment, non-fire reports were classified into five by factor and defined, and the causes of occurrence by factor were classified and proposed. Finally, in terms of hypothesis verification and final hypothesis selection, a non-fire prevention improvement termination process and a final hypothesis verification sheet were proposed to prevent the cause from causing re-error.