• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.122-128
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• 2020

This research investigates how a Virtual Reality (VR)-based simulation could be used to train safe operation skills for forklift operators. Forklift operation is categorized as high-risk work by many occupational health and safety regulators and authorities due to high injury and fatality rates involved with forklifts. Therefore, many safety guidelines have been developed for forklift operators. Typically, forklift operation safety training is delivered based on instructional texts or videos, which have limitations in influencing people's safety behavior. Against this background, we propose a VR-based forklift simulator that can enable safe operation skills training through a feedback system. The training program consists of several modules to teach how to perform the basic tasks of forklift operation, such as driving, loading and unloading, following the safety guidelines. The system provides instantaneous instructions and feedback regarding safe operation. This training system is based on the model of "learning-by-doing". The user can repeat the training modules as many times as necessary before being able to perform the given task without violating any safety guidelines. The last training module tests the user's acquisition of all safety skills required. The user feedback from several demonstration sessions showed the potential usefulness of the proposed training system.

• 한국산학기술학회논문지
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• 제16권6호
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• pp.4147-4157
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• 2015

전장 환경이 변화함에 따라 무기체계에 다양한 기능이 탑재되고 있다. 이와 함께 무기체계의 이상 유무를 진단하는 무기체계점검장비 또한 이전보다 더 복잡하고 수많은 정보를 다루게 되었다. 하지만, 대부분의 무기체계점검장비는 개발자 중심으로 설계되어있다. 이 때문에, 운용자가 점검장비 디스플레이에 전시되는 정보들을 파악하여 무기체계의 이상 유무를 판단하기 쉽지 않다. 따라서, 점검장비 운용자의 인지부하를 줄이고, 무기체계의 안전한 점검을 수행할 수 있도록 무기체계점검장비 디스플레이를 개발하였다. 이를 위해 생태학적 인터페이스 디자인 기법을 적용하였다. 작업영역분석을 통해 작업영역 모델을 개발하고, 요구정보를 추출하여 무기체계점검장비 디스플레이를 개발하였다. 새로운 디스플레이의 가장 큰 장점은 사용자가 수행하는 점검과 점검장비의 상태를 직관적으로 확인할 수 있다는 것이다. 본 연구 결과로 제시된 디스플레이를 활용하여 운용자가 보다 효율적이고 안전하게 임무를 수행할 수 있을 것으로 기대한다.

• 한국안전학회지
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• 제30권2호
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• pp.35-40
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• 2015

It is a tendency for enterprises in the domestic construction field to harness the system scaffolding with an aim to securing safety, despite slight increase in terms of the construction cost. Nevertheless, given that putting the system into service in reality is not accurately surveyed by far and that safety standards and methods for safe work therewith are not yet established, hazardous factors involving the system scaffolding remain latent leaving unrecognized. In this regard, the current study attempts to understand the status of implementation and use of the system scaffolding in the local construction sites as for the year 2009 and the year 2013 through questionnaire surveying and in-depth interviewing, while further proposing, based on the result thereof, ways for activating introduction of the system scaffolding in an effective and systematic manner.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.430-435
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• 1992

Hazard identification is one of the most important task in process design and operation. This work has focused on the development of a knowledge-based expert system for HAZOP (Hazard and Operability) studies which are regarded as one of the most systematic and logical qualitative hazard identification methodologies but which require a multidisciplinary team and demand much time-consuming, repetitious work. The developed system enables design engineers to implement existing checklists and past experiences for safe design. It will increase efficiency of hazard identification and be suitable for educational purposes. This system has a frame-based knowledge structure for equipment failures/process material properties and rule networks for consequence reasoning which uses both forward and backward chaining. To include wide process knowledge, it is open-ended and modular for future expansion. An application to LPG storage and fractionation system shows the efficiency and reliability of the developed system.

• 대한안전경영과학회지
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• 제1권1호
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• pp.69-77
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• 1999

One of the objectives of any task design is to provide a safe and helpful workplace for the employees. The safety and health module may include means for confronting the design with safety and health regulations and standards as well as tools for obstacles and collisions detection (such as error models and simulators), Virtual Reality is a leading edge technology which has only very recently become available on platforms and at prices accessible to the majority of simulation engineers. The design of an automated manufacturing system is a complicated, multidisciplinary task that requires involvement of several specialists. In this paper, a design procedure that facilitates the safety and ergonomic considerations of an automated manufacturing system are described. The procedure consists of the following major steps. Data collection and analysis of the data, creation of a three-dimensional simulation model of the work environment, simulation for safety analysis and risk assessment, development of safety solutions, selection of the preferred solutions, implementation of the selected solutions, reporting, and training. When improving the safety of an existing system the three-dimensional simulation model helps the designer to perceive the work from operators point of view objectively and safely without the exposure to hazards of the actual system.

• International Journal of Internet, Broadcasting and Communication
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• 제13권4호
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• pp.90-96
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• 2021

The logistics market is continuously growing due to the development of technology and the growth of the online market. In addition, the social atmosphere that emphasizes non-face-to-face due to the pandemic situation is accelerating the growth of logistics. Delivery of goods ordered online requires delivery process through courier worker. In order for the courier worker to ship the product, the work of loading the product on the truck must be preceded. The accident caused by such delivery and loading work is increasing and it is emerging as a social problem. This study proposes a robot-based automated loading system to efficiently handle the increasing volume of courier service and to construct a more efficient and safe working environment by replacing the physical labor that was overloaded to courier workers. The proposed system replaces the loading of the courier worker and proposes the optimal loading function through the automation system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.1569-1576
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• 2011

To install heavy structures in the railway bridges, crane methods or launching methods using temporary structure have been applied. These methods are uneconomical because working yard is required, temporary cut of rail system, etc. In this study, various construction methods has been developed which are suitable to the filed conditions. In the case of simple span structure like plate girder bridges, the girder is loaded to troy system at the working yard and then transferred to the working place. To lift and lower the girder system, a new transfer system was developed. Different methods each for simple span bridge girder and long span girder were developed and detailed work procedures were proposed. Using these methods, the heavy structures can be installed with simple and safe work procedures and the construction cost and duration can be reduced.

• 한국산업보건학회지
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• 제25권3호
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• pp.428-432
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• 2015

Objectives: The purpose of this study was to research 'Daeri' drivers who work for drunken customers as a substitute driver. This was the first study in Korea to investigate assault and verbal abuse experienced while employed as a 'Daeri' driver. Methods: In this study, we conducted a survey to investigate people who work as 'Daeri' drivers. The survey was performed from September 1 to 7, 2014. The participants were 166 adult men and women who work as full-time 'Daeri' drivers. Results: Participants who experienced physical violence and assault from the customers to the point of disturbing safe driving in a year were 36.1% of total respondents. People who experienced verbal abuse to the point of disturbing safe driving in a year totaled 80.4% of respondents. In addition, there were also qualitative research results. Conclusions: Acts that impede safe driving are a danger to both passengers and drivers. By protecting the safety of 'Daeri' drivers, we will be able to protect the safety of citizens. Therefore, it is necessary to make an effort to protect 'Daeri' drivers from customer violence. Furthermore, it is also necessary to research policy to emplace a legal system that can protect 'Daeri' drivers.

• 한국컴퓨터정보학회논문지
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• 제22권5호
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• pp.97-103
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• 2017

In this paper, we propose a method to investigate the safety consciousness of a analyst incident response. This study conducted a statistical survey on 154 analysts who hired as expert in environment monitoring organizations in South Korea. The results of the analyses showed that respondents had good awareness on the equipment incident response and complied with laboratory safety regulations very well. Secondly, respondents were aware of the importance in the order of equipment incident response, an analytical laboratory incident response, and the cause of a chemical substance associated incident in an analytical laboratory in regarding the regulation compliance for creating a safe laboratory environment and the securement of laboratory safety. Therefore, (it was identified that) it would be necessary to create a safe environment and integrate a safety management system.

• KIEE International Transactions on Power Engineering
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• 제4A권4호
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• pp.171-177
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• 2004

In the current age of the information oriented society in which we live, many people use PCs and are dependant on the databases provided by the network server. However, online data can be missed during the occurrence of a blackout and furthermore, power failure can greatly effect Power Quality. This has resulted in the trend of using interruption-free live-line work when trouble occurs in a power system. However, 83% of the population receives an electric shock experience when a laborer is performing interruption-free live-line work. In the interruption-free method, education and training problems have been pinpointed. However, there are few instructors to implement the necessary training. Furthermore, the trainees undergo only a short training period of just 4 weeks. In this paper, to develop a method with no restrictions on time and place and to ensure a reduction in the misuse of materials, immersion type virtual reality (or environment) technology is used. The users of a 3D immersion type VR training system can interact with the system by performing the equivalent action in a safe environment. Thus, it can be valuable to apply this training system to such dangerous work as 'Interruption-free live-line work exchanging COS (Cut-Out-Switch)'. In this program, the user carries out work according to instructions displayed through the window and speaker and cannot perform other tasks until each part of the task is completed in the proper sequence. The workers using this system can utilize their hands and viewpoint movement since they are in a real environment but the trainee cannot use all parts and senses of a real body with the current VR technology. Despite these weak points, when we consider the trends of improvement in electrical devices and communication technology, we can say that 3D graphic VR application has high potentiality.