• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.1209-1214
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• 2009

Various automatic temperature control systems have been used widely in Korea for the conservation of heating energy and the enhancement of thermal comfort in residential buildings. But the heating control performance for automatic temperature control systems extensively vary with the design and operational conditions of the heating system, the climate condition and others. It was introduced in this study a numerical calculation program package to analyze heating control characteristics of the automatic temperature control system. This package is able to analyze the room air temperature, return water temperature, supplied heating flux and flow rate, and so on. One the other hand, the simulation results were verified by comparing with the field test results.

• 디지털산업정보학회논문지
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• 제11권1호
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• pp.97-109
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• 2015

In this paper, we design and implement a two-way automatic communication system using a mobile instant messenger that can provide a customized service through a real-time two-way communication using a mobile instant messaging service. Two-way automatic communication system using a mobile instant messenger can improve the quality and quantity of information in real-time update of the information through the feedback. In addition, since it is communicated by using a mobile Instant Messanger in 1:1 there is no concerns that is recognized as spam, as well as it is possible to provide customized information for each user. Two-way automatic communication system using a mobile instant messanger shows the difference of the speed according to the data input time in typing by hands in result of comparing the time to input a date and the processing speed to search a data. Therefore in category treatment, command processing and natural language processing, Category treatment way is the most excellent in aspect of data processing speed, otherwise in aspect of the total speed to combine the data input time and the processing time, the command processing way is the best method.

• 전자공학회논문지B
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• 제32B권9호
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• pp.1215-1230
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• 1995

The purpose of this paper is to build a computer vision system that endows an autonomous mobile robot the ability of automatic measuring of the analog and digital meters installed in nuclear power plant(NPP). This computer vision system takes a significant part in the organization of automatic surveillance and measurement system having the instruments and gadzets in NPP under automatic control situation. In the meter image captured by the camera, the meter area is sorted out using mainly the thresholding and the region labeling and the meter value recognition process follows. The positions and the angles of the needles in analog meter images are detected using the projection based method. In the case of digital meters, digits and points are extracted and finally recognized through the neural network classifier. To use available database containing relevant information about meters and to build fully automatic meter recognition system, the segmentation and recognition of the function-name in the meter printed around the meter area should be achieved for enhancing identification reliability. For thus, the function- name of the meter needs to be identified and furthermore the scale distributions and values are also required to be analyzed for building the more sophisticated system and making the meter recognition fully automatic.

• 조명전기설비학회논문지
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• 제23권6호
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• pp.31-39
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• 2009

본 논문은 기존의 자동문시스템의 단점을 개선하여 보다 지능적인 기능을 추가함으로써 통행자에게 편의를 제공하고, 전격손실을 낮추는 보다 효율적인 초음파센서 기반의 지능형 자동문 시스템을 제안한다. 기존의 자동문시스템에서는 물체 및 인체 감지 기능 센서로서 원적외선 열선 감지센서와 근적외선 반사식 감지센서를 사용해 왔나. 기존의 방식은 상황에 맞지 않는 문닫힘에 의한 전력손실, 빠르게 다가오는 물체에 대한 적응 부족, 그리고 안전에 대한 문제점이 있었다. 제안된 초음파센서를 이용한 지능형자동문 시스템은 기존의 자동문시스템에 비교하여 필요없는 문닫힘 방지에 의한 전력손실 방지와 빠르게 접근하는 물체에 적응적으로 자동문이 빠르게 열릴 수 있게 하며, 안전도를 높여 기존 방식의 자동문보다 운용적, 경제적, 안정 면에서 성능을 개선하였다.

• 정보과학회 컴퓨팅의 실제 논문지
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• 제22권5호
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• pp.218-224
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• 2016

본 논문은 컴퓨터 기반의 자동 채점 시스템을 실용적으로 활용할 수 있도록 자연어 처리 기술을 이용하여 채점 기준표 작성 과정을 쉽게 하고 수작업 채점 비용의 절감 및 채점 기간을 단축시키는 방법을 제안한다. 자동 채점의 기준이 되는 정답 템플릿은 학생들이 작성한 답안들로부터 쉽고 편리하게 작성할 수 있도록 하였으며, 채점 정확도를 향상시키고 채점 오류를 최소화하여 신뢰도를 높이고자 하였다. 수작업 채점 대신에 자동채점 시스템을 도입하였을 때 그 효용성을 검증하기 위하여 2014년도 국가수준 학업성취도 평가의 사회과목 답안에 대해 자동 채점을 수행하였다.

• 동력기계공학회지
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• 제17권5호
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• pp.121-127
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• 2013

In this paper, we propose a distance measurement system for automatic berthing control using a stereo camera mounted on a rotation control device, and a radial pattern target. Automatically controlling the position and attitude of a ship aims to prevent maritime accidents due to human error. Our goal is to measure the relative distance between a ship and an onshore or offshore target for berthing. Therefore, the distance should be continuously measured while tracking a fixed point on a target. To this end, we developed a stereo camerabased distance measurement system that satisfied these requirements. This paper describes the structure and principle of the measurement system. We validate the distance error for target incline due to the relative position and attitude between a camera and a target in miniature scale. In addition, the findings of an experiment in an outdoor environment demonstrate that the proposed measurement system has accuracy within 1 m at a range of 20-100 m which is the acceptable accuracy for automatic berthing.

• 전자공학회논문지B
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• 제33B권6호
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• pp.128-135
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• 1996

In this paper, a digital signal processing method of AFC (automatic frequency control) is proposed for a home use VCR system. The proposed method has the ability of frequency tracking of a wide range. Implemented with digital circuits, the system is to be used in a digital video system and saves the cost of a hardware compared with a conventional analog automatic frequency control method using several PLL's in case of making home use VCR systems compatible with several TV systems.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2007년도 정기총회 및 학술발표대회
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• pp.513-517
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• 2007

This study is to establish the appliance model for the automatic fire alarm system in clean room within the framework of the performance based design. Because of the environmental and dimensional characters of clean room, this space is exposed to fire and toxic damage, so it is very important to notify the occupants of these dangerous situations.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
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• pp.801-809
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• 1993

This paper presents the design of an automatic propellant system model in order to improving tractive performance of tractor. The theoretical basis of automatic control , the characteristics and function of the system, and the kinematic analysis are also discussed.

• 대한전기학회논문지
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• 제39권8호
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• pp.888-897
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• 1990

In this paper, a multi-processor-based supervisory control for automatic assembly system is presented. The proposed supervisory control is organized in terms of C-language and with structured and easily expandable characteristics. Also the controller is designed to possess diagnostic capability including self-diagnosis of processor module. The developed supervisory control has been shown to be very useful via a high speed automatic assembly system with vision capability.