• Journal of the Korea Convergence Society
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• 제11권11호
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• pp.55-61
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• 2020

The communication issues expected for SMEs are that 1) IT systems are not easy to connect, 2) data collection and integration by heterogeneous systems are difficult, and 3) various fieldbuses and protocols make interfaces difficult. Usually, SMEs often have automation built before the introduction of smart factories. It is necessary to provide communication technology such as Sensing to meet the heterogeneous system level with the old aged sensors in the automation equipment and communication network of SMEs. We will consider how to improve the network interface before applying the latest network technology at the time of preparation using PI.

• The Journal of the Korea institute of electronic communication sciences
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• 제13권1호
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• pp.147-152
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• 2018

This study investigates the demand management and energy saving plan of the apartment house based on the ESS (: Energy Storage System), which is the main equipment in the field of electric power energy efficiency, and suggests standardization for various technical factors and operation. It contributes to the spread of ESS industry. In addition, to create ESS market for apartment houses and smart homes, housing IoT technology is used to integrate apartment houses with smart home-based ESS and it is possible to achieve use efficiency and economic feasibility of power users, We will study a business model that can reconsider the acceptability of power users.

• The Journal of the Korea institute of electronic communication sciences
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• 제15권2호
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• pp.253-258
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• 2020

Petrochemical industry complex in Korea always has high riskiness due to explosive and inflammable gases. To prevent these explosion, most facility of petrochemical industry complex requires the performance of explosive proof. The control panel, which is used as explosive proof, has been used the air injection method by manually from outside to constantly keep the temperature and pressure between inside and outside of the panel. In this paper, we propose the automatic temperature controller, which performs automatic heating and cooling according to temperature inside the panel in order to control temperature automatically.

• IE interfaces
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• 제8권3호
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• pp.241-248
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• 1995

Fa SI(Sysrem Intergration)분야에 있어서 PLC(Programmable Logic Controller)와 컴퓨터간의 접속은 필수 불가결한 요소기술로 자리잡고 있으며, 이러한 기술변화에 맞춰서 기존 유니트의 기술적 발전뿐 아니라 타 유니트와 접속등의 네트워킹에 관련된 내용이 하드웨어, 소트프웨어적으로 발전되고 있는 추세이다. 시스템통합을 하기 위해서는 기본적으로 PLC Networking을 하드웨어, 소프트웨어적으로 수행하여야 하나, 많은 연구들이 PLC 통신 유니트의 기술적 향상 및 표준화에 대한 부분으로 되어왔었다. 본 논문은 정보시스템을 구축할 때 PLC에서 처리하여야 하는 데이터, 혹은 컴퓨터와 송수신 받아야 하는 자료들에 대한 내용과 이들 자료를 PLC 내부에서 처리하는 방법론에 대해 기술코자 한다. 일반적인 Interface 방법으로 접점연결(Point to Point Connection)과 컴퓨터링크유니트에 대한 내용을 파악해보고, 설비고장진단 및 이상발생에 대한 추적이 가능하도록 PLC Memory내에 PLC접점데이타를 직접접근방식(Direct Accssing Method)과 간접접근방식 (Indirect Accssing Method)으로 구분하고, 간접접근방식을 요소(Element), 동작(Event)에 의한 방법론을 이용하여 PLC DATA를 처리토록 하는 내용을 설명하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2004년도 춘계학술발표대회
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• pp.269-272
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• 2004

1950년대 동란을 거쳐 1960년대 초반부터 시작된 경제개발계획에 의해 급격한 경제성장으로 인해 산업 인구의 대도시 집중화에 의하여 전기의 공급력 부족 현상은 지속되었다. 따라서, 이때부터 성장한 경제배전계통은 수적으로도 많고 광범위하게 산재되어 있어 인력에 의해서는 더 이상 효과적인 관리가 어렵게 되었고, 사회가 고도 정보화로 진전되면서 수용가는 한층 더 높은 공급 신뢰도와 고품질의 전력공급을 요구하고 있다. 이러한 변화에 따라 전력공급자는 전력계통에 대한 감시와 제어를 통하여 항시 안정적이고 신뢰성있는 운용을 하여야한다. 이에 따라 배전계통에 설치된 배전설비를 컴퓨터와 통신수단을 이용하여 원격지에서 감시 제어할 수 있는 배전자동화 시스템에 대한 연구가 오래 전부터 이루어져 왔으며 효과적으로 양질의 전력을 공급하고자 배전자동화 시스템(DAS)이 도입되었다. 본 연구에서는 능동적인 감시 및 제어기능을 제공하는 객체지향형 능동데이터베이스 알고리즘을 사용하여 배전계통 제어에 적용하였고 기존의 인터넷 통신망을 통한 감시 및 제어가 가능하게 하였으며 이러한 효과에 의해 배전계통이 여러개의 다른 전력회사로 분할될 경우 각기 존재하는 다른 시스템에 대하여 인터넷을 통한 연계가 가능하도록 하여 통합적인 데이터베이스를 구축하는데 용이하게 하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.752-755
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• 2009

Recently, the production process system is largely composed automatic system using the wired network. The production process system using wired network has disadvantages that take place expense when the installed and inspected production of equipment was replaced. The each equipment happens to repair cost for control and management in production processes. In this paper, the industrial equipment that applied for IEEE 802.15.4(ZigBee) technology solves a complicated space at the plant. And then when the industrial equipments replace wired network with wireless network, this paper studied its user interface.

• Journal of the Korea Institute of Building Construction
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• 제22권2호
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• pp.195-205
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• 2022

This paper aims to propose a cost-based mechanical, electrical, and plumbing(MEP) coordination process using building information modeling(BIM). The proposed process can help project participants eliminate identified clashes between the MEP elements, analyze trends relating to MEP costs during the coordination process, and share their findings. MEP quantity-related information extracted through BIM was integrated with the cost database and schedule information. To check the applicability of the proposed process, it was applied to a construction project in South Korea. Through the application of the proposed process, MEP-related cost was reduced.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2009년도 춘계학술발표대회
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• pp.1055-1057
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• 2009

전력시스템은 발전에서 수요에 이르기까지 다양한 설비 및 기기들이 유기적으로 결합되어 있고, 모든 과정이 실시간으로 운영되고 있는 매우 큰 규모의 시스템이다. 전력시스템에 IT 기술이 접목되면서 다양한 구성요소 간에 수많은 정보교환이 요구되는 시점에서 각 운영시스템별 독립적인 필요에 의해 상이한 플랫폼으로 개발되었기 때문에, 시스템 상호간 연계와 원활한 데이터 교환 및 유통을 통한 전체 전력시스템의 최적화를 이루는 데까지는 도달하지 못하고 있다. 다양한 운영시스템 상호간 데이터 교환을 위한 표준화 요구에 부응하여, 향후 전력시스템은 표준화되고 공개된 정보모델을 활용한 전사적 통합시스템 개발이 요구된다. 본 논문에서는 전력운영시스템 데이터 교환을 위한 메시지 버스에 대하여 기술하였다. 서로 다른 운영환경에서의 단위 운영시스템들을 동일한 플랫폼으로 재구성, 재개발하는 것이 어려운 상황에서 전력시스템 내 유통정보를 총체적으로 관리하고 이를 필요로 하는 운영시스템에 효율적으로 제공할 수 있는 인프라의 구축은 미래의 전력시스템의 부가가치를 높일 수 있는 기반을 제공할 것이다.

• Fire Science and Engineering
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• 제33권6호
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• pp.87-94
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• 2019

Through a press release dated July 17, 2018, the Anti-Corruption and Civil Rights Commission recommended that the National Fire Agency develop preventive measures against fire in the "Indoor Archery Ground" and "Room Escape Café" etc., which were originally excluded from the category of "Publicly Used Establishments." This study developed the hierarchy of domains and indicators of measurement for fire risk assessment of the new business of publicly used establishments through the Delphi Method. It analyzed the goodness of fit scores (over 3.00) and secured an average score of 4.25. Using AHP analysis, the ratio of consistency for the domains of measurement of fire risk assessment was found to be 4.0%, which was lower than CR ≤ 0.1 (10%). The consistency of subsequent measurement indicators were distributed in the range of 0.1%~3.6%, and they were identified as being commonly consistent. The indicators of measurement appeared as follows in order of importance and priority: Type of Internal Passage of Establishment and Evacuation Capacity of Exit (0.316), Control of Ignition Source (0.141), Inherent Risk (0.106), Appropriateness and Adaptiveness of Fire Detection System (0.097), Control of Inflammables/Combustibles (0.084), Guides and Facilities helping Evacuation (0.075), Fire Resistant Structure and Finishing Materials (0.060), Compartmentalization and Emergency Exit (0.049), Risk of Fire Expansion (0.046), and Appropriateness and Adaptiveness of Fire Extinguishing Facilities (0.026). The findings of this study are expected to be expansively used as data for future research on the development of fire risk assessment indicators.

• Environmental and Resource Economics Review
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• 제26권1호
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• pp.103-121
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• 2017

The domestic ESCO project was introduced in 1992 as one of the energy efficiency improvement programs. In recent energy market, the changes in the market conditions such as smart grid, renewable energy, and the importance of demand response became important issues. As the diversified business models are required, examples of overseas exercises are examined. Business areas in Europe or the US where the ESCO industry has been active include measures to improve the efficiency of energy facilities in all areas, ranging from energy supply facilities and energy services to end users. This type of ESCO overseas business model can be classified into various types such as project execution method, supplier demand management, financing method, climate change and emission rights, new and renewable energy, and other criteria. In this study, we propose to adopt IEC (Integrated Energy Contracting) contract method in domestic ESCO market for additional business models. Current convention of listing the specific individual business types being allowed by regulation turned out to be obstacles to the revitalization of the related market. In order to achieve the goal of energy conservation, it is recommended, instead, to revise the current funding guidelines to be a negative system.