• Title/Summary/Keyword: Precision Fire

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연기농도 계측용 광학식 미세입자 감지장치 개발

  • 김영재;김희식
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.04a
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    • pp.128-132
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    • 1997

  • The conventional fire detection devices are operated after a processed fire phase, which are sensing only a high density of smoke level or high temperature heat. They are not so precision to detect a fire in the early phase to protect the facility from the fire. We need to develope a new high precision smoke detection system to keep expensive industial facilities most reliably from fire. A new optical precision smoke detection system was developed. It monitors very low level density of smoke psrticles in the air. It is operated continuously through many years without a stop or any malfunction. The developed precision smoke detection system will be installed in important industrial facilities,such as power plants, underground common tunnel,main control rooms,computer rooms etc.

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Development of a precision smoke particle detector to sense a fire in early state (초기화재 감지를 위한 정밀한 연기 입자 감지 장치 개발)

  • 김희식;김영재;이호재
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.1734-1737
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    • 1997

  • The conventional fire detection devices are operated after a processed fire phase, which are sensing only a high density of somke level or high temperature heat. They are not so precision to detect a fire in the early phase to protect the facility form the fire. We need to develope a new high precision smoke detection system to keep expensive industrial facilities most reliably form fire. A new optical precision smoke detection system was developed. It monitors very low level density of smoke particles in the air. It is operated continously through many years without a stop or any malfunction. The developed precision smoke detection system will be installed in important industrial facilities, such as power plants, underground common tunnel, main control rooms, computer rooms etc.

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An Analysis on Confidence Level of Domestic Precision Guided Missile(PGM) based on Live-fire Test Results (국내 정밀유도무기 사격시험 결과 기반 신뢰수준 분석)

  • Seo, Bo-Gil;Yoon, Young Ho;Kim, Bo Ram
    • Journal of Korean Society for Quality Management
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    • v.48 no.1
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    • pp.215-225
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    • 2020

  • Purpose: The purpose of this study was to show current states of domestic Precision Guided Missile(PGM) by analyzing Live-fire test results using general methods to get the Confidence Levels. Methods: Live-fire test results were used to get Confidence Levels of PGM. The Confidence Levels were derived by two general methods. The first method was Binomial distribution and second was convergence of Hypergeometric distribution and Bayes' rule. Results: The results of this study are as follows; The more Live-fire tests of PGM are performed, the higher Confidence Level of PGM will be estimated. And the number of Live-fire tests are related to a unit price of PGM. This results means that the increase of live-fire test, which is useful data for preparation and evaluation of Development Tests / Operation Tests for PGMs, is only way to enhance the Confidence Levels of each PGMs. Conclusion: This study shows the relationship between the Live-fire tests and Confidence Levels of PGMs and it will be used on Live-fire Test & Evaluation of PGMs for reference.

  • https://doi.org/10.7469/JKSQM.2020.48.1.215 인용 PDF KSCI

A study of estimating the hit probability and confidence level considering the characteristic of Precision Guided Missile (정밀유도무기 특성을 고려한 명중률 및 신뢰수준 산정방안)

  • Seo, Bo-Gil;Hong, Seok-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.12
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    • pp.193-197
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    • 2016

  • The performance of Precision Guided Missiles is estimated by using hit probability only, which is calculated by hits against total amounts of fires in current domestic live-fire tests. It has a limitation in judging the performance of all produced Precision Guided Missiles by using the calculated hit probability according to the result of live-fire test, because the overall characteristics of the produced Precision Guided Missiles are not considered. In other words, a method is needed to estimate the confidence level which is more reliable than simply calculated hit probability according to the result of live-fire test for guaranteeing the hit probability of Precision Guided Missiles by certain level, which is already being operated or produced. This paper introduces a method to estimate the confidence level of Precision Guided Missiles by minimum live-fire tests using Hypergeometric distribution and Bayes' rule suitable for the characteristics of Precision Guided Missiles, which are small production, high costs and unable to check whether the missile hits the target or not before the live-fire tests. Also, this paper suggests a reasonable confidence level for showing the performance of the Precision Guided Missiles using the results of live-fire tests and domestic and foreign literature, when the result of live-fire tests will be decided.

  • https://doi.org/10.5762/KAIS.2016.17.12.193 인용 PDF KSCI