• 한국전자통신학회논문지
• /
• 제16권2호
• /
• pp.347-354
• /
• 2021

화학공장과 같은 장치산업은 고온·고압·유독성 유체가 배관을 통하여 각종 설비들 사이를 이동한다. 온도변화, 진동, 지진, 지반침하와 같은 주변환경의 변화에 의한 배관의 위치 이동과 파손은 인명피해를 수반하는 큰 사고로 연결되는 경우가 많다. 이러한 사고를 방지하기 위하여 배관에 가해지는 각종 충격을 흡수하고, 보완하여 사고를 미연에 방지하기 위한 여러 가지 종류의 익스펜션 조인트(Expansion Joint)를 사용한다. 따라서 사용된 익스펜션 조인트의 변형을 측정하고, 수명을 예측하는 것은 대형사고를 방지하기 위하여 매우 중요하다. 본 논문에서는 익스펜션 조인트의 변형을 일종의 모션으로 이해하고, Hall Effect Sensor와 9-Axis Sensor를 사용하여 변화를 측정하였다. 그리고 범용의 마이컴보드 아두이노와 C언어를 사용하여 측정된 데이터를 모으고, 분석하여 익스펜션 조인트의 변형을 예측할 수 있는 시스템에 대하여 연구하였다.

• 한국인터넷방송통신학회논문지
• /
• 제23권4호
• /
• pp.177-182
• /
• 2023

우리나라는 현재 65세 이상 인구가 약 15%에 이르는 고령화 사회이다. 이에 따라 현재 정부에서는 여러 가지 대책을 마련하고 있지만, 줄어들기 보다는 오히려 빠르게 증가하고 있는 문제가 바로 노인 교통사고이다. 당장 여러 매체에서도 바로 확인을 할 수 있을 정도로 많이 증가하였고, 현재 교통사고로 숨지거나 다치는 노인이 하루 평균 약 110명, 한 해 약 4만 여명에 달하고 있고, 경찰청의 발표에 따르면 5년 전 보다 노인 교통사고 발생률이 25% 가량 증가하였음을 발표한 바 있다. 이러한 노인 교통사고에 대하여 본 논문은 빅 데이터 분석, R 프로그래밍 언어를 통하여 노인 교통사고를 분석하여, 노인 교통사고의 주된 원인과 이를 방지할 수 있는 대책이 필요한 지역을 제시하고자 한다.

• 한국재난정보학회 논문집
• /
• 제2권1호
• /
• pp.81-89
• /
• 2006

As the quality of the rising the desire for safety life and the need of safety education to prevent disasters or big safety accident have been shown. Therefore the superintendent of education for safety experience carry out a policy for set up. However, it is unclear the appropriateness of safety education program and safety standard of facilities of introductions in the safety experience center. therefore, in the result of this study will be the basic information for the realities of experience in the place of safety experience education and propose the reform measure.

• 대한안전경영과학회지
• /
• 제15권2호
• /
• pp.143-149
• /
• 2013

Recently in the construction business construction companies has been ordered to survive in the terriblly competitive environment. Aa a result, most of the project with low-priced contract needs a speedy progress during all construction period. For the last five years major incident frequently occurs and results in the death of 189 workers at major top 6 construction builders. In most recent 10 years, the cause of major incidents happened in construction company is the speedy construction work that is affecting on the safety management. To prevent these accidents in the speedy construction work, four factors were chosed and analysed such as the personnel/organization, the working budget, the subcontractor selection and the employee motivation. The head office taked the support plan and tested it at the pilot work site. It showed a reduced accident and the harmful factors can be eliminated. It should be able to apply to the field to secure safety and prevent accidents.

• 자동차안전학회지
• /
• 제10권2호
• /
• pp.20-28
• /
• 2018

Currently, sharp increase of car is on the rise as a serious social problem due to loss of lives from car accident and environmental pollution. There is a study on ITS (Intelligent Transportation System) to seek coping measures. As for the commercialization of ITS, we aim for occupancy of world market through ASV (Advanced Safety Vehicle) related system development and international standardization. However, the domestic environment is very insufficient. Core factor technologies of ITS are Adaptive Cruise Control, Lane Keeping Assist System, Forward Collision Warning System, AEB (Autonomous Emergency Braking) system etc. These technologies are applied to cars to support driving of a driver. AEB system is stop the car automatically based on the result decided by the relative speed and distance with obstacle detected through sensor attached on car rather than depending on the driver. The purpose of AEB system is to measure the distance and speed of car and to prevent accident. Thus, AEB will be a system useful for prevention of accident by decreasing car accident along with the development of automobile technology. This study suggests a scenario to suggest a test evaluation method that accords with domestic environment and active response of international standard regarding the test evaluation method of AEB. Also, by setting the goal with function for distance, it suggests theoretic model according to the result. And the study aims to verify the theoretic evaluation standard per proposed scenario using car which is installed with AEB device through field car driving test on test road. It will be useful to utilize the suggested scenario and theoretical model when conducting AEB test evaluation.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2006년도 추계학술대회 논문집
• /
• pp.91-97
• /
• 2006

Currently, approx. 10,532 turnouts were installed on the KR line, of which 3,644 turnouts were installed in the main line where high speed operation is performed. This shows that it is necessary to improve the performance of turnout as one of vulnerable areas for the safe operation of a train. Even though the number of railway accidents is decreasing every year due to the renewal of railway facilities, there are still many factors that cause the occurrence of an accident. In particular, an incident in turnout area does not only have a high risk of a serious accident but also affect the operation of a train on the adjacent track in most cases, and consequently a big social loss is expected due to the delay in train operation as well as the loss of life and property. The objective of this study is to examine the accidents occurred in turnout area that is one of typical　vulnerable areas over the past ten years, on the basis of the results, and to take an appropriate measure by finding out the major cause of accidents in turnout area so that a systematic safety system can be established to prevent or reduce accidents in turnout area.

• 대한인간공학회지
• /
• 제36권5호
• /
• pp.579-587
• /
• 2017

Objective: The purpose of this study is to measure the workload of Korea coastal ship crew members, to investigate whether they are following work-break time regulations and to identify the main causes of their workload. Background: According to the US Coast Guard, about 33% of human casualties are reported to be due to fatigue, and 30% of marine casualties reported by the British Marine Accident Investigation Agency (MAIB) are attributed to crew fatigue. But the coastal ship are not managed for business hours and breaks despite the harsh environment. Method: The workload of duty crew members on the 100 domestic coastal vessels was measured. It was also investigated whether they are following domestic and international work-break time regulations. Finally, the marine accidents resulted from the fatigue of the crew was analyzed. Results: As a result of workload analysis, the workload on the 42~62% of the vessels exceeded the standard of working time on the related regulation. The workload increased with the number of inbound and outbound ports. Especially, in the system where there are two seafarers, the workload exceeded the working time requirement. As a result of the marine accidents analysis on 100 vessels, it was found that collision and grounding occurred due to fatigue, workload and drowsiness in 7 marine accidents out of 30 marine accidents. Conclusion: It is necessary for the shipping companies to introduce an operation management manual for the management of the crews' workload and reasonable crew arrangement. It is also required for crew members to easily record work times and for shipping companies to manage the record. It would be possible to prevent many marine accidents by providing adequate rest to the crews and flexibly adjusting their working hours. Application: The results of this study can be used as fundamental data to manage crews' fatigue and to make job management manuals.

• 전기학회논문지
• /
• 제65권12호
• /
• pp.2113-2118
• /
• 2016

The precise detection of electric leakage point of underground power cable is very important to reduce cost and time of maintenance and prevent electric shock accident through expedite repair of electric leakage point. This paper proposes a electric leakage point detection system underground power cable using of half-period modulated transmission waveform and earth electric potential measurement. The developed system is composed of transmitter to generate the wanted pulse waveform, receiver to measure and display earth electric potential by the transmitted pulse in electric leakage point and PC Software program to display of GPS coordinate on detection cable line. The performance of the electric leakage point detection system was tested in the constructed underground cable leakage detection test bed. The test results on signal generation voltage precision of signal transmitter, mean detection earth voltage, mean detection leakage current and electric leakage point detection error showed the developed system can be used in electric leakage point detection underground power cable.

• 한국항해항만학회지
• /
• 제30권3호
• /
• pp.247-251
• /
• 2006

다양화 개성화로 확산되고 있는 21세기 고도화된 산업사회에 진입하면서 소득수준의 향상과 토요일 휴무제에 따른 여가활용 시간의 증대에 수반하여 수상레저활동의 인구가 증가한 동시에 그 내용은 매우 활동적이다. 종래 여가활동이라고 하면 정적인 옥내활동이 주류였으나, 현시점의 여가활동은 사회발전과 더불어 옥외활동, 나아가서는 스스로 활동하고 경험하는 쪽으로 전개되고 있다. 이러한 관점에서 수상 레저는 안전한 수상활동으로 성취될 수 있는데, 수상레저활동의 급성장으로 인하여 수상안전사고가 심각한 문제로 대두되고 있다. 따라서 수상 레저기구 활동자의 체계적인 안전관리를 위하여 종합적인 육성과 관리대책 마련하고자한 결론은 안전사고를 예방하기위해서는 소양교육을 실시하여야 하며 안전검사 및 등록을 의무화하여 제도권에서 활동하도록 하여야하며 수상레저활동 안전사고에 대한 피해보전을 위해서 보험에 가입할 수 있도록 강력한 제도적 보완장치가 필요하다.

• 한국재난정보학회 논문집
• /
• 제4권1호
• /
• pp.34-52
• /
• 2008

The result of all terrors causes enormous damage. In order to prevent this damage in advance and find a prompt provision after terror, we investigated a safety measure against terror on the assumption that the fire in Daegu central subway is a subway terror. The followings are the safety measures against terror based on an underground space. Frist, training systems have to be established to provide against a terror. Second, People's consciousness about safety from a terror, centering on early education, has to be raised. Third, the provisions related with underground tunnel have to be established so that people can take shelter in underground tunnel areas. Fourth, CCTV has to be established in the guest rooms of the electric motor cars. Last, cooperative systems among related organizations have to be constructed, and the networks of the organizations have to be established so that they can cope with an accident.