• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.1145-1146
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• 2008

Failures of equipments are linked directly to extensive damages of human lives or financial losses from the increasing uses of railway signaling equipments utilizing computers. Then safety organizations have to establish for guaranteeing safety during the system life-cycle. In this paper, we examine the relationship between railway signaling standards and other safety standards for safety meaning establishment.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.150.3-150
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• 2001

Requirements for Distributed Monitoring and Control Networks (DMCN) differ greatly from those of typical data networks. Specifically, any DMCN technology which employs a fieldbus protocol is different from If network protocol TCP/IP. In general, one needs to integrate fieldbus protocol and TCP/IP to realize DMCN over IP network or internet Interoperability between devices and equipments is essential to enhance the quality and the performance of predictive maintenance (PM). This paper suggests a basic framework for LonWorks-based DMCN over IP network and a method to guarantee interoperability between devices and equipments.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 1999.12a
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• pp.45-61
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• 1999

General trend in electronics industry towards multimedia in the 21 century is presented here. All equipments require fast graphic processing together with thin and lightweight assembly technology. In Japan, CSP was developed and applied to mobile equipments for several years, and recently stacked die assembly technology is being developed. In addition, so-called flip chip technology is also being developed and which is applied to MCP and MCM little by little these days. Here current packaging technology in Japan is presented including above.

• Proceedings of the KSR Conference
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• 2001.10a
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• pp.370-375
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• 2001

This paper is to suggest reliability modeling and analysis method of Electric Multiple Unit (EMU). It is necessary to identify subsystem/equipments of EMU and functional interfaces between subsystems in order to carry out reliability modeling of EMU properly. After identifying subsystem/equipments and functional interface, reliability allocation is performed using ARINC method. Reliability target of system/subsystems is verified in revenue service during the proper periods.

• Proceedings of the KWS Conference
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• 2004.05a
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• pp.299-301
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• 2004

Weld examination is one of the most important processes to ensure the integrity of facilities of Nuclear Power Plants. Weld examination must be the implemented based on the approved plan, the qualified examiners and equipments. Weld examination management system provides functionalities for planning of inspection, reporting the examination results, and managing the examiners and equipments.

• Proceedings of the KIEE Conference
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• 2002.11d
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• pp.341-343
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• 2002

According to the computerization of railway signalling equipments, the need of communication protocol for interface between these equipments is increasing. In this paper the research results on communication protocol structure for interface between LDTS(Local Data Transmission System) and EIS(Electronic Interlocking System) is represented.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.04b
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• pp.358-362
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• 1995

Precision electronic equipments are composed of sophisticated microcircuits that are extremely vulnerable to lightning-caused voltage spike. This transient voltage spike may cause upset, latent failure or interference on electronic equipments. In order to develop efficient lightning protection measures on AC power lines for a road traffic controller, experimental surge immunity tests were conducted according to IEC standard 801-5. The combination of gas tube arrester and metal-oxide varistor was installed at the input of AC power lines and the silicon avalanche suppressor installed at the output of DC power supply as lightning protection measures.

• Korean Security Journal
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• no.3
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• pp.336-384
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• 2000

The current function of 119EMS(Emergency Medical Service) is simply to transport patients to hospitals due to the lack of medical personnel and medical equipments. In order to mark the current 119EMS system, that is to say, more many medical technician and paramedics, medical equipments supplementation, korean EMS communication system simplification and the re-arrangement of the existing fire organization, and so on. Also so various problems involving 119EMS should be solved political and financial support and the change in people's attitude toward the public fire service.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.10a
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• pp.447-450
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• 2002

In the surrounding of the electric machinery and equipments occurring of using the electromagnetic fields, other electric machinery or equipments are induced the malfunctions by the radiated and leaked electromagnetic fields. And the human hazardous problems by that effect are being discussed frequently. So efficiently shielding technique of injurious electromagnetic field for high frequency welder is discussed in this paper.

• Proceedings of the KIEE Conference
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• 1997.07b
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• pp.603-605
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• 1997

The systematic and efficient operation of telecommunication power equipments is very important to the safe operation of telecommunication system. To achive that, Korea Telecom has developed a new centralized management system for telecommunication power equipments. The system configuration and main functions for the new developed system are described in this paper.