• Proceedings of the KIPE Conference
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• 2012.11a
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• pp.17-18
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• 2012

Generally, speed control system is used to control the elevator door. The whole speed profile must be installed in the speed controller of the door control system. However, it is not easy to modify the speed profile when door opening size and time are changed. In this paper, the making speed profile is discussed by the door opening size and time. The position control algorithms of PMSM for elevator door system are compared with general speed control, position control method with speed controller, and position control with speed command feedforward compensation by simulation using MATLAB/SIMULINK.

• Journal of Applied Reliability
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• v.13 no.4
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• pp.287-298
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• 2013

This paper presents a case study of PSD(Platform Screen Door) system assurance based on EN50126 life-cycle stage. By applying this system assurance, the accidents related to urban light transit railway especially that caused casualties could be reduced tremendously. This case study contributes significantly to the reliability, availability, maintainability and safety of the PSD system. Request For Proposal (RFP) of a rail road operator in which required by RAMS is prepared in which to ensure all system assurance activity and safety assessment are compulsory. The step-by-step activities and related deliverables are used which include functional analysis, FMECA, hazard identification analysis, system hazard analysis, maintainability analysis, FRACAS, and finally verification and validation of the system.

• Proceedings of the KSR Conference
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• 2007.05a
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• pp.1671-1674
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• 2007

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.

• The tire
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• s.232
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• pp.22-25
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• 2007

탈거리의 발달은 급기야 전 세계를 하루 생활권으로 만들었다. 비행기, 기차, 자동차, 선박 같은 교통수단의 발달은 이른바 글로벌시대를 열어 전 세계가 하나의 가족이 되어 가는데 가장 큰 역할을 했고, 특히 자동차는 사람이나 화물을 운송하는 주요 수단으로서 현대인들에게 의식주 못지않게 중요한 필수품이 되었으며, 전 세계적으로 그 수요가 급속히 증가하고 있는 실정이다. 자동차는 시간과 공간을 효율적으로 사용할 수 있게 하는 등 많은 이익을 주는 반면 교통사고 및 교통체증에 의한 인적, 물적, 경제적 손실 등과 같은 많은 사회적 문제들을 유발시키고 있는 것도 사실이다. 일반적으로 교통사고는 인간적, 차량적, 도로적 요인 등 개개별 요인과 이들의 교호작용에 의해서 발생하기 때문에 차량의 안전운행을 위한 대책은 이들 요인들의 종합적인 분석을 통하여 해결할 수 있다. 이에 따라 운전자와 보행자를 동시에 보호할 수 있고, 운행 시 운전자의 편의를 제공할 수 있는 차량안전시스템 및 이를 위한 제어기술, 정보통신기술, ITS기술, 차량동역학기술 및 차체설계기술 등이 개발 되고 있고, 과거 자동차에서는 볼 수 없었던 시트벨트, 에어백, 범퍼, 차체충격흡수장치, 도어 임팩트 빔 등이 개발되어 교통사고 시 피해를 극소화하는데 기여하고 있다.

• Journal of Auto-vehicle Safety Association
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• v.5 no.2
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• pp.51-56
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• 2013

In vehicle's door wiring harness (W/H) system is more toward to arrange a passenger compartment than a hinge and a weatherstrip. An opening/closing member of a vehicle is attached to a vehicle by a hinge in a manner enabling easy opening and closing of the opening/closing member. Such members include doors, such as side-doors and rear doors, and other opening/closing members, such as trunk lids. This article gives some insight into the dimensioning process, with special focus on large deflection analysis of wiring harness(W/H) in vehicle's door structures for durability problem. The Finite elements analysis for door wiring harness(W/H) is used for residual stresses and dimensional stability with bending flexible. Durability test data for slam test specimens were compared with the numerical predicted fatigue life for verification. The final testing of the component combines the effects of these microstructural features with the complex stress state arising from the combined service loading and residual stresses.

• Proceedings of the KSR Conference
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• 2001.05a
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• pp.162-169
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• 2001

There are many EMU lines in korea. But only one type has been applied to passenger side door. This type is so called "Pocket sliding type". This type has some week points. To begin with, it is not good for decreasing the noisy form the outside of carbody. And the second time, if some obstacles are put between sliding door, only driver can operate re-open door switch manually ill driver's cab. This type is so dangerous for passengers. So many people want to the new door type that have no defect. KRRI joined forces with ANT corporation for pneumatic plug door system. This type will be good for decreasing the noisy, passenger′s safe. The project was started at the last year on November and will be finished on June, this year In this paper, we will deal with the role of cylinder, planetary gear, door control unit, dynamic mechanism, and the report of FEM, type test. This paper will contribute to tile electric motor control plug door system.

• Journal of the Semiconductor & Display Technology
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• v.13 no.4
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• pp.77-81
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• 2014

There have been developed in authentication systems for information using biometric information approaches such as fingerprint, face, and iris. In general, a door-lock system is operated by touching keypads, which remains fingerprints on the keypads. Such door-lock systems do not protect personal information from others due to the exposure of fingerprints to keypads. In this paper, we propose the new door-lock system that does not leave fingerprints on the keypads. Without touching keypad the system works because the system accepts authentication information by using illuminance sensor and LED. The experiment shows that the implemented door-lock system works well under any circumstance.

• Proceedings of the KIEE Conference
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• summer
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• pp.815-817
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• 2004

This paper deals with the characteristics analysis and experiments of operating actuator for automatic door operated by fire detecting sensor. The dynamic characteristics of operating actuator system are analyzed on the structure of the operating actuator model. Simulation and experimental result have been performed for the verification of the proposed system and dynamic characteristics applied to a actuator by electromechanical energy conversion theory. The experimental result have been compared with proposed theoretical predictions. In this experimental result represented the temperature T1 and T2 which remarks T1 is a circumstance of operating actuator system, and T2 is a fire detecting sensor part.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.66 no.6
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• pp.968-974
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• 2017

In this paper, modeling of brushless DC motor (BLDC) driving system for platform screen door control applied fuel cell power generation system has been proposed. At first the system configuration and operational principle of the developed fuel cell simulator has been investigated and the design of BLDC motor driving system is studied and the overall performance and dynamics of the proposed system could be effectively examined by simulation. PSIM simulation program is implemented to verify the performance and compatibility of the fuel cell power generation system and BLDC motor control system modeling.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.1002-1005
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• 2014

아웃도어 열풍과 자연생태공원 조성 등으로 야외활동이 증가하고, 그에 따라 야생화를 접할 기회가 늘어나는 추세이다. 스마트 기기의 보유율이 증가하고 있는 현실을 반영하여, 스마트 기기를 이용한 등산 탐방로, 생태공원 등에 조성되어 있는 야생화를 판별해 줄 어플리케이션을 개발하고자 한다. 이 논문에서는 촬영한 야생화 이미지에서 배경과 대상을 분리하는 방법과 색상을 추출하는 방법을 분석하고 데이터베이스에서 검색하여 사용자에게 야생화 정보를 제공하는 방법을 제안한다.