• 한국잠사곤충학회지
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• 제48권1호
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• pp.28-31
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• 2006

효율적으로 누에똥을 수집할 수 있는 사육장치 및 수집기를 개발하기 위하여 본 연구를 수행하였다. 1. 사육장치 무게를 경량화하고 조립식 및 바퀴를 부착하여 급상 및 수집작업시 편리성을 제고하였다. 2. 누에자리망 크기별 수집량은 7.0*7.0 mm망 이용시 5.0*5.0 mm 대비 36% 많았으나, 떨어지는 누에가 5령 사육기간 동안 다소(0.3%) 있었다. 3. 누에 수거기를 이용한 수집노력은 수작업 대비 37%의 절감효과가 있었다. 4. 상자당 누에똥 수집량은 2단 사육시 19.7kg의 잠분이 수집되었다. 5. 노동투하시간(시간/상자)은 현행(손수집) 대비 개선(수집기)이 65%수준으로 35%의 노력절감이 있었고 노동생산성(kg/시간)은 55% 증가하였다. 6. 생산비에서도 현행 대비 개선이 35.9% 비용절감이 있었다. 7 누에수거 및 누에통수거시 흡입구 조절할 수 있도록 제작하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1998년도 추계학술대회 논문집
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• pp.530-536
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• 1998

In the design of the light rail transit which is more reliable and economical, it is essential to develope a efficient third rail system. Especially, the analysis for the conductivity of conduct rail and the wear of collecting shoe is the first step of its development. In this paper, experiments for conductivity in conductor rail, wear in collecting shoe were performed respectively as different materials of conductor rail and current collector. Noise level and interruption, wear and contact resistance of collecting shoe were proposed as design parameters for the development of this system. Experimental equipment and methods of design parameter stated above were proposed, which is expected that analyzed results will be used as a basic data for the development of the system.

• 한국신뢰성학회지:신뢰성응용연구
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• 제11권4호
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• pp.357-369
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• 2011

Eco-robot for collecting recycling products is the machine which collects non-industrial wastes such as cans, PET bottles and etc. to reuse them as recycling resources. This eco-robot is operated in the condition that it should compress and hold various products without knowing their geometric shapes and material properties. For this reason reliability problems like malfunction or failure. comes to emerge, but the reliability test conditions to assess its performance and durability have not been founded yet. Therefore in this research failure mechanism of the eco-robot was analyzed and life test equipment which can reproduce actual usage conditions was developed. The compression levels in the life test were determined by measuring the crushing force acting on test products and Furthermore the test specimens which have equivalent shape and material properties with those of cans and PET bottles were proposed by simulating the deformation characteristics so that the actual compression conditions were set up in the test.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권2호
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• pp.609-625
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• 2023

This study is a demand research for the selection of public safety science and technology equipment and suggests an empirical research method. The technology demand survey is the beginning of the selection of innovative technology. And it is the basis of collecting information required for the technology required in the market and helping to apply it to the field. The demand survey for police science and technology can reduce the uncertainty of crime prevention and help the smooth implementation of security policies. However, in Korea, adoption of security science and technology equipment was centered on social issues or researchers' opinions rather than the demands of field users. Until, there was no research has been conducted on the demands of field police officers for selection of security science and technology equipment in Korea. Also, there was no preferential study for the demand for security science and technology equipment. Therefore, this study proposes a methodology that can systematically identify the needs for the technology and equipment of field experts suitable for the public security situation for the selection of security science and technology equipment. Specifically, we propose a sample design for a technology classification system and a survey tool for technology awareness and satisfaction. It is expected that this tool will provide a classification system for security science and technology equipment selected for the Korean police and will help determine the priority of equipment suitable for the field.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.411-418
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• 2007

To analyze dynamic and long-term behavior of high speed rail system, and seismic measurements been installed at the various locations in the high speed rail system. Among these, 76 measurements were installed Chunan and Deajeon, and 80 measurements between Kwangmyung and Chunan. From these 156 measurements, real time data are continuously corrected and be sent to the main monitoring system to be used further analysis. These two systems were installed by different institution, and so there are not only basic differences in the system itself, but system running methods and data collecting/transferring methodology. There has been systematic difficulties due to these differences. This study shows the whole steps of high speed rail data monitoring systems include measurement equipment itself and data collecting/transferring system. study will proposed a more effective methods for collecting. This study also discuss the real time analysis method which can be used for future high speed rail monitoring system.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2005년도 춘계학술발표대회 개요집
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• pp.188-190
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• 2005

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.153-160
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• 2009

The demand for super tall building construction is increasing worldwide. There has been a constant request for achieving early payback on investment by shortening the construction time. This pertains especially for the case of huge investment projects such as super tall building construction. It is very important to shorten the construction time for the building framework, which requires substantial construction time and cost, and this is directly related to the establishment of an optimum lift plan for construction. When there is a problem in the selection of the lift equipment, it is almost impossible to revise the selection, resulting in a possible failure of the project. Thus, the purpose of this study is to analyze the function and logic for the development of the process for the selection of lift equipment for super tall building projects and further development of making the analyzed process into a system. In line with this research objective, the process of selecting the optimum lift equipment by domestic construction company was investigated and analyzed as well as collecting the actual field data. The actual data were obtained by sensors installed on tower cranes at three construction sites with the help from the construction company.

• 대한토목학회논문집
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• 제40권4호
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• pp.401-408
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• 2020

본 연구는 교통정보 수집 시 사용되고 있는 다양한 수집장비에 대하여 고찰하고, 이에 따른 운영현황 및 문제점을 분석하여, 기존 교통정보 수집방식의 문제점과 오차를 저감시킬 목적으로 드론을 이용한 교통영상정보 수집방법을 제시하고자 한다. 본 연구에서는 드론을 이용한 현장조사 결과를 기반으로 고도별, 각도별, 방향별로 분석을 시행하였다. 분석결과를 토대로 드론을 이용한 교통영상정보 수집방법에 관한 드론 촬영기준을 제안하였고, 기존의 교통정보 수집방법과 드론을 이용한 교통영상정보 수집방법과의 비교·검토를 통해 장·단점을 제시하였다. 또한, 교통영상정보 수집 시 드론을 활용하여 공중에서 각종 교통정보를 수집할 수 있고, 기존에 설치한 교통정보 수집지점과 더불어 주변의 상황까지 더 광범위하게 수집하고 각종 돌발상황, 재난상황 등 유고상황에 능동적으로 대응하여 이용자에게 주변 교통정보를 제공할 수 있으며, 필요에 따라 수집지점을 변경·확대하는 등 고정식 장비로 수집되는 교통정보를 보완하여 정확한 교통량 조사 목적을 달성하는데 이바지할 수 있을 것으로 판단된다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.128.2-128
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• 2001

Since pulse energization can improve the performance of Electrostatic Precipitator(ESP) for high resistivity dusts, high voltage micro-pulse generators, 70kV 140usec duration pulses for instance, are commonly developed by LC resonance for most pulse powered ESPs. Consisting of discharge electrodes and collecting electrodes, ESP has its own capacitance like a capacitor. ESP's capacitance affects the LC resonance phenomenon with resonance inductor and capacitor of micro-pulse power supply, engineers should acquire the value of their ESP to design for proper power supply design. In this study, we describe the ESP's capacitance measuring device which has the same topology with our new developed micro-pulse power supply. In this microcontroller based capacitance measuring equipment, ESP's capacitance can be calculated easily through ...

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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• pp.569-581
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• 1996

A microcomputer -based data acquistion system was designed and developed at Michigan State University , USA to conduct field data studies. The system designed for the research carried out used an Apple IIe microcomputer for collecting data on-board the tractor. An AII3 Analog to Digital (A/D_ convertor was chosen to interface each analog signal to the microcomputer. A commercially available Dj TPM II was employed to display information such as an engine speed, ground speed, percent drive wheel slip , distance travelled and area covered per hour. The frequency output from the radar unit was channeled through a frequency to voltage (F/V) convertor , so that AII3 Analog to Digital (A/D) convertor could read it. The fuel consumption was measured using on EMCO pdp-1 fuel flow meter attached to the engine fuel line. The draft of the tillage and other drag equipment was determined using strain gages attached to the drawbar of the tractor. The system was developed to collect the draft and fuel requirements for various farm equipment different kind of soils.