• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2007년도 하계학술발표대회 논문집
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• pp.139-139
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• 2007

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2004년도 하계학술발표 논문집
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• pp.143-143
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• 2004

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1205-1210
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• 2004

The 4-20mA analog signal used in the various industrial fields to interface sensor in distributed process control has been replaced with relatively simple digital networks, called "fieldbus, and recently by Ethernet. Significant advances in Internet and computer technology have made it possible to develop an Internet based control, monitoring, and operation scheduling system for heating, ventilation and air-conditioning (HVAC) systems. The seamless integration of data networks with control networks allows access to any control point from anywhere. Field compatible field devices become so-called "smart" devices, capable of executing simple control, diagnostic and maintenance functions and providing bidirectional serial communication to higher level controller. The most important HVAC of BAS has received nationwide attention because of higher portion of more than 40% in building sector energy use and limited resources. This paper presents the Internet-based monitoring and control architecture and development of LonWorks control modules for AHU (air handling units) of HVAC in viewpoint of configuring BAS network. This article addresses issues in architecture section, electronics, embedded processors and software, and internet technologies.

• 한국태양에너지학회 논문집
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• 제34권1호
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• pp.8-18
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• 2014

Building simulation is used in a variety of sectors. In its early years, building simulation was mainly used in the design phase of a building for basic functions. Recently, however, it has become increasingly important during the operating phase, for commissioning and facility management. Most building simulation tools are used to estimate the thermal environment and energy consumption performance, and hence, they require the inputting of hourly weather data. A building simulation used for prediction should take into account the use of standard weather data. Weather data, which is used as input for a building simulation, plays a crucial role in the prediction performance, and hence, the selection of appropriate weather data is considered highly important. The present study proposed a technique for generating real-time weather data files, as opposed to the standard weather data files, which are required for running the building simulation. The forecasted weather elements provided by the Korea Meteorological Administration (KMA), the elements produced by the calculations, those utilizing the built-in functions of Energy Plus, and those that use standard values are combined for hourly input. The real-time weather data files generated using the technique proposed in the present study have been validated to compare with measured data and simulated data via EnergyPlus. The results of the present study are expected to increase the prediction accuracy of building control simulation results in the future.

• 설비공학논문집
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• 제24권4호
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• pp.343-350
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• 2012

The major goal of building energy management is to minimize the energy consumption while maintaining the comfortable environment condition. Nowadays building energy management to save HVAC energy and so on is the most critical issue for existing building service branch with high efficiency equipments and their optimal operation. The effects on the building energy savings of the building equipment retrofit and the improvement of its operation method, especially in the field of HVAC system, were analyzed in this study for domestic small and/or medium sized buildings. Over 8.8% of energy saving was achieved compared withe total energy consumption in commercial building. These results could be used for reasonable maintenance and efficient management of the various building service equipments and related systems.

• 한국건축시공학회지
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• 제4권1호
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• pp.75-83
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• 2004

The IB is normally defined in terms of BA, OA, security system, information processing and telecommunications services However, the buildings being already in existence are deficient in two areas. One of these areas is building envelope and plan. The other area is mechanical, electrical and structural systems which do not provide the environmental quality required by IB. Existing technology and design knowledge are available to address these deficiencies. Especially, the office buildings being already in existence must meet IB requirement in order to achieve desirable office environment. They are a building envelope, moisture control, properly-located windows, shafts for duct, telephone and electric closets and acoustical environments. In this paper, a new approach to construct the work scope of remodelling the office building being already existence is described by contrasting the building performance criteria of IB. It concludes by speculating on the consequences of extrapolating the results of study to remodelling the office building being already existence.

• 원예과학기술지
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• 제28권5호
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• pp.877-883
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• 2010

본 연구는 Reasoner's building self-esteem에 근거한 자아존중감 향상 원예치료 프로그램이 청소년의 자아존중감에 미치는 영향을 알아보고자 실시되었다. 담당 지역사회교육 전문가(사회복지사)에게 추천 받은 중학생 14명 중 본 프로그램에 참여가 적합한 실험군 7명과 대조군 7명을 대상으로, 2009년 4월부터 2009년 7월까지 이루어졌다. 실험 결과, 실험군은 사후에 자아존중감 중위수가 높아졌고, 통계적으로 유의한 차이를 나타냈으나(p=$0.046^*$), 대조군은 사후에 자아존중감 중위수가 낮아졌으며 통계적으로 유의한 차이를 보이지 않았다(p=0.610). 자아존중감 하위영역별 점수 변화에서 실험군은 사회적 자아존중감에서 통계적으로 유의한 증가를 보였으나(p=$0.018^*$), 대조군은 모든 하위영역 점수에서 유의한 차이를 보이지 않았다. 본 연구결과를 통해 Reasoner's building self-esteem에 근거한 원예치료 프로그램이 청소년의 자아존중감 향상에 적절한 도구로 활용 가능함을 검증했다는 점에서 본 연구의 의의가 있으며, 향후 임상에서 활용할 수 있을 것으로 기대한다.

• 한국위성정보통신학회논문지
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• 제8권2호
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• pp.17-21
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• 2013

빌딩 등 건물에너지 절약에 대한 관심이 전 세게적으로 날로 증가하고 있으며, BEMS(Building Energy Management System)을 효율적으로 운용하기 위한 IT 기술에 대한 연구를 지속적으로 진행하고 있다. 최근 LED 조명기술의 발전으로 LED를 제어하여 에너지 절감효과를 극대화 할 수 있으며 BEMS에 이러한 LED 조명 제어기술들이 개발되고 있다. 본 논문에서는 건물에 설치되어 있는 LED조명과 연동되어 있는 객체감지 센서를 ZigBee 통신을 활용하여 서버와 연결이 되며, 사용자가 서버와 연결된 PC를 통해 모니터링 및 제어가 가능한 시스템을 제안하였다. 설계한 구조를 기반으로 빌딩에서 객체를 감지하여 LED 조명을 실시간으로 모니터링 및 제어 가능한 기능을 제안하고, 관련 Software 개발을 통해 구현가능성을 입증하였다.

• Structural Engineering and Mechanics
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• 제49권6호
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• pp.687-703
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• 2014

This paper develops a new nonlinear model for active control of three-dimensional (3D) irregular building structures. Both geometrical and material nonlinearities with a neuro-controller training algorithm are applied to a multi-degree-of-freedom 3D system. Two dynamic assembling motions are considered simultaneously in the control model such as coupling between torsional and lateral responses of the structure and interaction between the structural system and the actuators. The proposed control system and training algorithm of the structural system are evaluated by simulating the responses of the structure under the El-Centro 1940 earthquake excitation. In the numerical example, the 3D three-story structure with linear and nonlinear stiffness is controlled by a trained neural network. The actuator dynamics, control time delay and incident angle of earthquake are also considered in the simulation. Results show that the proposed control algorithm for 3D buildings is effective in structural control.

• 설비공학논문집
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• 제24권12호
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• pp.830-836
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• 2012

In this study, the effects of heating control methods on heating control performance and energy consumption in the floor radiant heating control system of residential apartments were research by computer simulation. A general regression neural network(GRNN) control method for reducing indoor temperature overshoot and saving energy in floor radiant heating system is suggested. The GRNN control method shows good responses in comparison with the conventional and outdoor reset control methods for improving indoor thermal environment and reducing energy consumption.