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온정근 한국철도학회 2022 철도저널 Vol.25 No.3

도시철도차량의 비상 시나리오 분석을 통한 비상방송 및 비상조명의 모듈화 방안 연구

온정근,노지호,백지은 한국도시철도학회 2018 한국도시철도학회논문집 Vol.6 No.4

Automatic announcement systems and emergency lights are necessary to prevent urban railway vehicles from accident, according to the emergency response guideline of domestic railroad. When emergency situation occurs, safety regulations and standards for urban railway vehicles specify that the emergency lights must be turn-on over 30 minutes as well as that the announcement should be provided by an attendant. However, as the current emergency systems use different units without a standard and system maintenance and management is not well performed, it is difficult to know the operation status. In this paper, modularized structures are given to standardize the emergency systems. The modularized structures analyzed from emergency scenarios of railway can substitute the existing broadcasting and lighting system. As a result, the optimized modular system considering cost and maintenance can be proposed by comparing all modularizations. 철도 비상대응계획 수립에 관한 지침에 의하면 도시철도차량의 비상상황에 대한 자동방송 및 조명 시스템에 대한 설비가 반드시 필요하다. 도시철도차량 안전기준에 관한 규칙에 의하면 비상상황이 발생하였을 때 비상조명은 30분 이상 정상동작할 수 있어야 하고, 비상방송은 승무원에 의해 안내되어야 한다. 하지만, 현재 운영되는 비상시스템은 운영기관 마다 설치여부 또는 설치된 제품이 다르며, 유지보수 및 관리가 되고 있지 않아서 동작여부를 판단하기 어렵다. 따라서, 본 논문에서는 비상시스템의 표준화를 위한 모듈화 방안에 대해서 연구를 수행한다. 도시철도차량의 사고 상황과 사고 발생 시나리오를 분석을 기반으로 기존 비상시스템을 대체할 수 있는 비상방송 및 조명의 모듈화 방안을 도출하였다. 각 방안의 장단점을 비교한 결과 유지보수와 비용을 고려한 최종 모듈화 방안을 확정할 수 있었다.

ULSI DRAM의 BIST 알고리즘을 위한 패턴발생회로 설계

온정근,김대익,도경주,이영훈,이창기,전병실 전북대학교 전자산업개발연구소 1991 전자산업연구 Vol.2 No.-

Lately, more developed semiconductor technolgy is, higher integration per one chip is rapidly. Mow 64 Mb DRAM is used 0.3㎛ techonology. This very large integration is caused faults of new type, and exhaused much time for test. So algorithms which distiguish at higher faults coverage. less time and cost of test is reported. In this paper control circuit of Built-In Self Test(BIST) Algorithm was designed for ULSI DRAM. This circuit generates patterns of the algorithm by input clocks.

ULSI DRAM의 BIST 알고리즘을 위한 제어회로 설계

온정근,김대익,도경주,이영훈,이창기,전병실 전북대학교 전자산업개발연구소 1991 전자산업연구 Vol.2 No.-

Lately, more developed semiconductor technolgy is, higher integration per one chip is rapidly. Mow 64 Mb DRAM is used 0.3㎛ techonology. This very large integration is caused faults of new type, and exhaused much time for test. So algorithms which distiguish at higher faults coverage. less time and cost of test is reported. In this paper control circuit of Built-In Self Test(BIST) Algorithm was designed for ULSI DRAM and simulated with MYCAD. This control circuit is carried out steps of algorithm, controlled generation of test patterns and data, generated control signals of parallel test.

객체모델형 방법론에 의한 HAZOP에 관한 연구

온정근,문수영 한국도시철도학회 2017 한국도시철도학회논문집 Vol.5 No.4

Safety systems are often connected a result of failures or accidents that directly affects people's lives. Therefore, it is important for the safety system to achieve high safety and reliability through evaluation methods that have a better effect. HAZOP is a systematic technique that examines various escape phenomena deviating from the design intent and derives process risk factors and problems. However, it is difficult to have objective reliability depending on the experience and competence of the participating experts, and there is a possibility of omission of potential causes. In this paper, we propose an methodology of Object Model Type HAZOP which can obtain optimized results by simple design and adaptive process of object unit by objectification of the system as a methodology for deriving an effective potential risks. 안전 시스템들은 고장이나 사고의 결과가 인명 피해로 직결되는 경우가 많아 체계적인 안전관리가 필요하다. 따라서 안전 시스템은 더 나은 효과를 내는 평가 방법을 통해 더욱 높은 안전성과 신뢰성을 달성하는 것이 중요하다. HAZOP은 설계 의도로부터 벗어나는 다양한 이탈현상을 검토하여 공정상의 위험요소 및 문제점을 도출하는 체계적인 기법이지만 참가한 전문가의 경험과 역량에 의존해 객관적인 신뢰성을 갖기 어렵고, 잠재적인 원인들에 대해서는 누락의 가능성도 있다는 단점이 있다. 본 논문에서는 효과적인 잠재 위험원 도출을 위한 방법론으로서 해당 시스템을 객체화하여 단순한 설계와 객체 단위의 적합성 검증 프로세스 적용으로 최적화 된 산출물을 얻을 수 있는 객체모델형 HAZOP 방법론에 대해 제시한다.

시스템엔지니어링 프로세스에 의한 철도차량성능시험 자료 분석

온정근(Jung-Ghun Ohn) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5

철도차량(도시철도)성능시험은 철도안전법(도시철도법)에 의한 법정시험이며, 우리나라에서 운행하고자 하는 철도차량이 최종적으로 거쳐야 하는 검증시험이다. 도시철도법에서는 표준사양에 따라 시험방법을 고시하고 있으나, 철도안전법의 성능시험은 시험방법을 협의에 의하여 결정한다. 시스템엔지니어링(SE)에서는 요구사항(Requirements)이나 제품 사양(Specifications)에 따라 분석/설계 과정에서 검증 요소를 도출하고 검증방법이나 기준을 결정하여 시험절차로 작성하고 시험한다. 성능시험 중 발생하는 많은 자료와 절차 및 기준, 기록 등을 효율적이며 추적이 가능하도록 관리하고 업무의 효율성을 향상시키기 위하여 성능시험절차를 시스템엔지니어링프로세스에 의하여 분석하였으며 '성능시험관리 시스템'을 설계하였다. 본 논문에서는 성능시험에서 발생하는 자료들을 시스템엔지니어링에 따라 분석한 것을 보인다. The Rail Rolling Stock (Urban Rolling Stock) Performance Test is the statutory test by The Law of Rail Safety, and rail vehicles to operate go through the final verification test. Test methods for The Rail Rolling Stock Performance Test were determined by consultation. In system engineering(SE), verification/validation methods and criteria determined by the analysis of requirements/specifications and design elements, To manage Many documents of The Performance Test and to improve efficiency and to trace the test data/materials we developed The Management System of The Rail Rolling Stock Performance Test. The process of The Management System are according to the process of system engineering by analysing the flow of test documents. This paper show the analysis of documents of The Rail Rolling Stock Performance Test according to system engineering.

승강장 스크린 도어 시스템 특성 시험의 반복 측정에 의한 불확도 개선 고찰

온정근(Ohn Jung-Ghun),김명룡(Kim Myung-Yong),윤명상(Yun Myung-Sang),김원경(Kim Won-Kyong),원시태(Won Si-Tae) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-

A PSD system has a lot of characteristic for safety. Trust of performance test is very important. But PSD performance test has an effect on trust by proficiency of test staff because it is difficult to automate. In that specially the effort test, manual opening and shutting test and abrasion measurement, test staff is demanded for proficiency. Therefore the paper repeated measurement in same condition and studied proficient factor of examiner according to increased measurement counter. As a result, measurement uncertainty has improved.

철도차량용 LED전조등의 수명시험용 온도제어부의 성능평가

온정근(Jung-Ghun Ohn),정기석(Ki-Seok Jeong),정종덕(Jong-Duk Chung) 한국철도학회 2016 한국철도학회논문집 Vol.19 No.1

LED 전조등 수명시험장비의 조도측정모듈 제어방식에 대한 연구

온정근(J.G.Ohn),노지호(J.H.Noh),정종덕(J.D.Chung) 한국도시철도학회 2017 한국도시철도학회논문집 Vol.5 No.3

The device for a life test of a railway vehicle headlight LED was produced and design. The manufactured life test apparatus has a structure in which the illuminance of a plurality of samples is measured by a single illuminance measuring apparatus. In order to measure the illuminance of the life test apparatus, all the samples were turned off, and then the individual power was supplied sequentially to select the measurement method. However, this illumination measurement method has a phenomenon in which the measured illuminance differs from the normal illuminance when the sample is turned off and then supplied again. In this paper, we investigate the cause of the difference in illuminance and studied the illuminance measurement method to solve it.

승강장 스크린도어용 구동모터의 온도특성에 관한 연구

온정근(Jung-Ghun Ohn),권기진(Ki Jin Kwon),최영하(Choi Yung ha),심재복(Jae-bock Shim) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-

Platform screen dorr (PSD) is equipment composed of screens and doors on the platform of subways or light trains, separating the platform from the railroad. The equipment is opened and closed in connection to the doors of carriages. In order to operate the system safely, it is important to understand the characteristics of key parts. There are many parts and environmental factors such as voltage, current and temperature change but the present study measured the change rate of torque and energy changes according to the temperature of the driving motor and analyzed the characteristics of the changes and examined the features of a motor required for stable PDS and the conformability of control programs.