• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 추계 학술논문 발표대회
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• pp.9-10
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• 2012

Efficient operation of construction equipment has become more and more important in the competitive construction environment. Accurate measurement of performance rate of construction equipment is a critical factor for a construction project planning. However, it might be quite difficult to measure the performance rate due to diverse practical limitations such as continuously variable performance rate of construction equipment, considerable indirect cost, large construction field, and so on. Therefore, the purpose of this paper is to propose an automatic algorithm that measures a performance rate of construction equipment with a multipurpose composite sensor. It is expected that the algorithm compiles database on construction equipment and in advance, facilitates efficient operation of construction equipment.

• 한국건축시공학회지
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• 제8권1호
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• pp.37-42
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• 2008

As use of construction equipment has been increasing continuingly, the proportion of equipment expense to the total construction cost has become higher. However, there is a difference between the equipment expenses section in 'Poom-Sam' and practical data, because 'Poom-sam' does not consider non-working days due to weather conditions, legal holidays and management conditions. Therefore, 'Poom-Sam' does not present a reasonable standard for estimating construction equipment expenses. In this study, to estimate realistic construction equipment operating hours, firstly, construction equipment was classified according to work, and weather conditions, in which each work could not be executed, were established. Then, weather data on Seoul and Busan($2004{\sim}2006$) and legal holidays were analyzed to suggest annual standard operating hours. The annual standard operating hours of earthmoving & excavating, compaction, and drilling equipment was estimated to be 1,430 hours, and lifting equipment, concrete paving equipment, asphalt paving equipment, concrete equipment, and crushing & conveying equipment were estimated to be 2,124 hours, 1,156hours, 1,188hours, 1,688hours, and 2,152hours respectively.

• 비파괴검사학회지
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• 제7권2호
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• pp.52-57
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• 1988

This article presents a newly developed equipment system for computer-aided, magneto-inductive testing of metals for material properties. The advantages of ultramodern computer technology over conventional test mothods are illustrated, in particular the greatly simplified equipment adjustment and the extended possibilities of test data evaluation. The characterisitics of the new system of equipment are demonstrated by way of practical testing examples.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 추계학술발표회
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• pp.188-188
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• 2017

• 한국지열·수열에너지학회논문집
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• 제10권2호
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• pp.1-6
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• 2014

As Korea's economy is entering a period of gradual growth, rate of growth on the construction market is becoming slow like that in developed countries. Remodeling construction market will be gradually expanded due to change in the social environment and diversification of individual demand. This study aims to promote the status of building equipment field with corresponding strategies based on the current situation that the importance of building equipment field is emphasized. Although it is desirable that building equipment construction companies lead remodeling construction, the building equipment part of general construction companies take the important role may be a advisable way, because the technology of building equipment construction companies is a little insufficient. Though building equipment field has become more important, the number of credits and professor of the field is still small than other fields of architectural engineering. More practical curriculums are necessary to meet the expectation of companies. Mechanical part of building equipment construction does not have independent law otherwise the other parts of building equipment construction. Establishing the independent law is urgent to promote the remodeling construction technology.

• 한국실천공학교육학회논문지
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• 제3권2호
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• pp.136-141
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• 2011

제조현장에서 활용되는 생산 장비들의 시스템 발전 및 변화 추세는 PLC, DCS, SCADA 등 기존 시스템의 특성화된 영역들과 함께하고 있고 일부에서만 특성화된 영역이 고유의 영역으로 위치를 지키고 있다. 특히 시스템 간 통합, 감시제어시스템과 생산관리시스템, 경영정보시스템이 서로 연계 되어 가고 있으며 이러한 연계는 Open System을 요구하고 있는 현실이다. 이에 맞추어 최근 산업현장에서의 생산 자동화장비들은 단위기계의 자동화 단계를 벗어나 전체 공정의 흐름을 연계하여 생산하는 단계로 변해가고 있으며 급격히 융복합화된 기능과 성능을 요구하고 있지만 대부분의 학부 교육은 현장의 교육 요구 사항을 만족하지 못하고 있는 것이 현실이다. 본 연구에서는 이러한 문제점들을 해결할 수 있도록 관련 학부 교육과 재직자 교육을 연계하여 보다 현장감 있는 교육을 실시할 수 있도록 설계한 장비와 교육과정을 제안한다.

• 실천공학교육논문지
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• 제9권1호
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• pp.49-56
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• 2017

최근 Industry 4.0으로 인해 제조업에 대한 생산성 향상과 고객만족을 위한 스마트팩토리 관심이 매우 높고 정부 지원에 따른 구축도 활발하다. 특히, 효율적인 생산 시스템을 구축하기 위한 데이터 통합과 이를 위한 필드버스 통신기술은 필수적이다. 필드버스는 특정 밴더 시스템에 구속받지 않는 개방형 제어시스템으로서 타사 제품과의 호환성, 데이터 전송의 정확성, 원격진단 등의 다양한 이점을 가지고 있다. 그러나, 필드버스를 학습하기 위한 교육 장비와 실습을 위한 교육과정 및 예제가 전무하여 산업현장에서 스마트팩토리 구축을 위해 필요로 하는 실무 능력 향상에 많은 제한점이 있다. 따라서 본 연구는 국내 산업현장에 적합한 PLC와 통신기술을 선정한 선행연구 결과를 바탕으로 실무적인 필드버스 교육을 위한 PLC기반의 필드버스 교육 장비와 교육과정을 개발하고 Ethernet IP, Profibus DP, Modbus, CC-Link, Device Net의 다양한 필드버스를 구현하였다. 또한, Ethernet IP를 통한 데이터 수집과 모니터링으로 분산된 필드기기의 제어와 원격진단이 가능함을 확인하였다.

• 한국실천공학교육학회논문지
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• 제1권1호
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• pp.61-65
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• 2009

공학교육을 위한 실습장비가 다양하지 못함에 따라 특정 실습을 위해서 맞춤식 교육용 장비 개발이 절실한 경우가 많다. 특히 전공심층과목인 진동공학에 관련된 교육장비는 국내외 부족한 실정이다. 이에 따라 실제 현장에서 발생되는 진동현상을 구현하면서, 진동공학의 이론교육과 실습을 위한 교육용 장비들을 개발할 필요가 있다. 본 논문에서는 학부생 졸업연구작품 과제를 통해서 개발된 임계속도 측정용 회전체 교육장비, 밸런싱 머신 교육장비, 자석을 이용한 흡진기 교육장비 및 능동진동제어 교육장비를 각각 소개하고, 수업시간을 통해서 교육장비들의 활용성 및 실용성을 검증하였다. 또한 미래 교육장비의 개발 및 적용에 대한 개선안도 제안하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.205-207
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• 2019

육군의 화력장비 정비교육 중 특기병 교육은 실습용 장비가 부족하고 많은 교육생으로 실습기회가 적고 정비실습 시 안전사고 발생위험이 높아 실질적인 실습이 제한적이고 반복 실습이 어렵기 때문에 교육적 효과가 미비한 게 현실이다. 따라서 실제와 같은 체험훈련으로 교육성과를 높이는 훈련시스템이 필요하다. 본 연구에서는 시공간을 초월하여 훈련비용을 낮추고 실제와 같은 체험훈련을 할 수 있으며, 표준 정비매뉴얼이 반영되고 팀워크를 이루어 훈련할 수 있는 가상훈련시스템을 제안한다. 가상훈련시스템은 시공간을 초월하여 비용을 낮추고 실제와 같은 훈련이 가능한 시스템으로 본 연구에서 제안한 3차원 디스플레이 시스템인 HMD를 이용한 1인칭 시점의 가상훈련시스템은 육군 화력장비 정비교육에 적합한 시스템이며 확장성이 좋기 때문에 다른 장비와 타군의 정비교육에도 활용되어 군의 정비능력 향상에 크게 도움이 될 것으로 기대한다.

• 한국산업보건학회지
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• 제33권2호
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• pp.156-170
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• 2023

Objectives: This study conducted practical training to improve the proper usage of personal protective equipment(PPE), which greatly impacts workplace safety and health management. Personal protective equipment education was conducted through active participation, without theoretical modules, and aimed to identify the effects of repeated practical education and determine ways to increase participant satisfaction. Methods: Study data were analyzed using the IBM SPSS Statistics ver.29 software. First, participants' general characteristics were analyzed with frequency analysis. Second, the normality and equality of variances (Leven's test) were tested for the dependent variables prior to statistical analyses to determine the use of parametric tests. In general, normality is assumed when the sample size is 30 or more per the central limit theorem (Park et al., 2014). As our sample size of health management workers was 43, normality can be assumed. However, to ensure rigor of the study, we examined skewness and kurtosis. The results confirmed that the data were normally distributed. Third, the effects of repeated PPE training were analyzed using paired t-tests. Fourth, differences in satisfaction with PPE training according to the safety and health job position and safety and health certification were analyzed with t-test and Welch's t-test. For parameters that did not meet the assumption of equal variances, the Welch's t-test was performed. Results: Repeated PPE training improved the educational outcomes, and the improvements were significant in the 1st and 2nd respiratory PPE and safety and hygiene PPE training evaluations (p<.001). In terms of safety and health job position, repeated training led to improvements in educational outcomes, with significant improvements observed among supervisors and specialized health management institution workers in the 1st and 2nd training evaluations (p<.005). In terms of safety certification, repeated training led to improvements in educational outcomes, with significant improvements observed among both certified and non-certified individuals (p<.005). Regarding satisfaction with PPE training according to safety and health job positions, specialized health management institution workers showed greater satisfaction than supervisors, with significant differences in the satisfaction for expertise of lecture, work relevance, and lecturer's attitude (p<.001). Regarding satisfaction with PPE training according to safety and health certification, satisfaction was higher among certified individuals, with significant differences in satisfaction for work relevance and lecture attitude (p<.05) Conclusions: PPE education should be recommended to be provided as practical training. Repeated training can enhance educational outcomes for individuals with inadequate knowledge and understanding of PPE prior to education. For individuals with high levels of pre-existing knowledge and understanding of PPE, the results show that various training experiences should be provided to enhance their satisfaction. Therefore, it suggests that the workplace should actively seek educational media and methods to acquire expertise and skills in wearing personal protective equipment and improve the ability to use