• Journal of Biosystems Engineering
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• 제28권1호
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• pp.53-58
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• 2003

This study was carried out to design, construct, and test a greenhouse monitoring system fur the environment and status of control devices in a greenhouse from a remote site using internet. The measuring items selected out of many environmental factors were temperature, humidity, solar radiation, CO$_2$, SOx, NOx concentration, EC, pH of nutrient solution, the state of control devices, and the image of greenhouse. The developed greenhouse monitoring system was composed of the network system and the measuring module. The network system consists of the three kinds of monitors named the Croup Monitor. the Client Monitor and the Server Monitor. The results of the study are summarized as follows. 1. The measuring module named the House Monitor. which is used to watch the state of the control device and the environment of the greenhouse, was developed to a embedded monitoring module using one chip microprocessor 2. For all measuring items. the House Monitor showed a satisfactory accuracy within the range of ${\pm}$0.3%FS. The House Monitors were connected to the Croup Monitor by communication method of RS-485 type and could operate under power and communication fault condition within 10 hours. The Croup Monitor was developed to receive and display measurement data received from the House Monitors and to control the greenhouse environmental devices. 3. The images of the plants inside greenhouse were captured by PC camera and sent to the Group Monitor. The greenhouse manager was able to monitor the growth state of plants inside greenhouse without visiting individual greenhouses. 4. Remote monitoring the greenhouse environment and status of control devices was implemented in a client/server environment. The client monitor of the greenhouse manager at a remote site or other greenhouse manager was able to monitor the greenhouse environment and the state of control devices from the Server Monitor using internet.

• 대한기계학회논문집A
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• 제27권10호
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• pp.1644-1652
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• 2003

The monitor product is packed by cushioning materials because the monitor can be broken during transportation. However, the addition of the cushioning material increased the volume of the product. Therefore, it is required that the usage of cushioning material be minimized. In practice, design engineers have followed the ad hoc design with experiences of predecessors. Automation of the design process is very important for the reduction of engineering cost, and can be achieved by an excellent design process and software development. According to Axiomatic design, a design flow is defined and a software system is developed for automated design. At first, a basic model is defined. A user can modify the model from menus and design is carried out according to the input from the user. Finite element models are automatically generated based on the design. A nonlinear finite element analysis program called LS/DYNA3D is linked for the impact analysis. The process of Design of Experiments using orthogonal array is installed to minimize the maximum acceleration in drop test. Therefore, a new design can be proposed by the system. The program is designed according to the Independence Axiom of Axiomatic design. FRs and DPs of the software system are defined and decomposed by zigzagging process. Independent modules can be generated by analysis of the full design matrix and each module is coded as class in Object Oriented Programming (OOP). Design results are discussed.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.248-251
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• 1991

A robust monitor AGC(Automatic Gauge Control) system for a hot strip mill plant of POSCO Is designed by minimizing the H.inf. norm of a so called mixed sensitivity function. In order to solve the mininizatlon problem, a polynomial approach proposed by Kwakernaak[5] is used. The controller performance is tested by a computer simulation under various circumstances.

• 소성∙가공
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• 제14권4호
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• pp.360-367
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• 2005

The injection-molded plastic parts have many surface defects: warpage, weldline, flowmark, zetting, scratching, shading and so on. As weldline was one of the major surface defects in the case of desktop monitor, warpage and surface shrinkage are the bigger problems of LCD monitor in the pursuit of light weight and thinner thickness of parts. Some measures to improve these defects were introduced in this paper. Based on these, the laboratory work to find out the optimum processing conditions and to get the best parts was repeated injection moulding try-out after reflecting these improvements. The defects of warpage and surface shrinkage was significantly improved after the improvements in the case of the 20.1 inch even if in the 15 and 17inch case the warpage size was a lttle over the allowed specification because of not taking the measure for parts design within the allowable limits from the required specification in the cause of cost down.

• 전자공학회논문지B
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• 제33B권2호
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• pp.65-76
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• 1996

This paper describes the issue relating to the design and implementation of a high-precision vision system for monitor inspection. We present several monitor inspection algorithms which evaluate the geometric distrotions of the patterns on the inspection target monitor. Also, to inspect color distortion acquired form color CCD camera into the XYy coordinate, accurately. The proposed monitor inspection system is implemented on IBM PC/486, and the user interface is developed on microsoft windows to assist unskilled users for easy use. Using the developed vision system, Experiments on the inspection accuracy and speed were performed and the results are presented.

• 정보처리학회논문지A
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• 제9A권4호
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• pp.563-572
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• 2002

성능감시기는 분산처리 환경에서 프로그램의 성능을 추적하고 평가하기 위해 필수적인 것이다. 성능감시기는 출력방법에 따라 오프라인과 온라인으로 나눌 수 있다. 오프라인성능감시기는 프로그램이 종료된 후에 그 성능을 분석하는 것이고, 온라인 성능감시기는 프로그램의 수행 중에 분석하는 것이다. 따라서 프로그램의 빠른 분석과 디버깅을 위해서는 온라인 기능이 필수적이다. JaNeC은 Java로 구현된 분산처리 환경으로 이를 위한 오프라인성능감시기가 포함되어 있다. 그러나 이 성능감시기로는 JaNeC에서 수행되는 프로그램을 효율적으로 분석할 수 없다. 따라서, 본 논문에서는 JaNeCe에서 수행되는 프로그램의 빠른 분석과 디버깅을 위해 온라인 성능감시기를 설계하고 구현하는 것에 대해서 설명한다. 이 온라인 성능감시기는 분석하고자 하는 프로그램에 영향을 최소화하도록 설계되었으며, 효율적인 프로그램 분석을 위해 다양한 형태의 그래픽 출력을 제공한다. 또한 프로그램이 종료된 이후에도 다시 분석할 수 있도록 하기 위해 오프라인 성능감시기와의 인터페이스도 제공한다.

• 한국압력기기공학회 논문집
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• 제5권2호
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• pp.13-19
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• 2009

As the operating time in nuclear power plants (NPPs) increases, the integrity of nuclear components may be continually degraded due to aging effects of systems, structures and components. Recently, a number of NPPs are being operated beyond their design life to produce more electricity without shutting down. The critical issue in extending a lifetime is to maintain the level of safety during the extended operation period while satisfying the international regulatory standards. Therefore, it is beneficial to build a monitoring system to measure an aging status. In this paper, the Aging Monitor (AM) based on lots of aging database obtained from the operating plants and research results on the aging effects was developed to monitor, manage and evaluate the aging phenomena systematically and effectively in NPPs. The AM for the CANDU is divided into 6 modules: (1) Aging Alarm/Coloring Monitor, (2) Aging Database, (3) Aging Document, (4) Real-time Integrity Monitor, (5) Surveillance and Inspection Management System, and (6) Continued Operation and Periodic Safety Review (PSR) Safety Evaluation. The proposed system is expected to provide the integrity assessment for the major mechanical components of an NPP under concurrent working environments.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2000년도 추계 학술발표대회 논문집
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• pp.86-87
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• 2000

기술의 급격한 발달로 이제 소비자는 다양한 유형의 정보를 접하게 되었으며, 디지털화의 급속한 변화는 디자인 환경에 커다란 변화를 주고 있다. 따라서 디자인 대상의 다양화, 다변화 현상이 나타나고 있으며 이와 함께 소비자의 욕구 역시 복잡하고 다양한 형태를 가지게 되었다. (중략)

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2011년도 춘계학술대회
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• pp.47-48
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• 2011

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 하계종합학술대회 논문집(3)
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• pp.67-70
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• 2000

In a distributed real-time system(DRTS), testing and debugging are difficult and critical procedures since they implies several problems like probe effects, nondeterminism, and complex communication patterns. In this paper, we describe the design and implementation of a real-time monitor for ARM processors which are frequently used for embedded applications. The focus of design is to help users debug real-time programs while minimizing the probe effect. Our monitor provides cross debugging features like down-loading from host, break-point based debugging features, and watch-point debugging features for real-time applications. We developed the debugger for ARM processor and debugger has been used for kernel program.