• KIPS Transactions on Computer and Communication Systems
• /
• v.8 no.12
• /
• pp.297-304
• /
• 2019

The technological advances such as communication, sensor, and artificial intelligence lead smart factory construction. Smart factory aims at efficient process control by utilizing data from the existing automation process and intelligence technology such as machine learning. As a result of constructing smart factory, productivity increases, but costs increase. Therefore, small companies try to make a step-by-step transition from existing process to smart factory. In this paper, we have proposed a remote control system that support data collection, monitoring, and control for manufacturing equipment to support the construction of CNC cutting machine based small-scale smart factory. We have proposed the structure and design of the proposed system and efficient sensing data transmission scheme. To check the feasibility, the system was implemented for CNC cutting machine and functionality verification was performed. For performance evaluation, the web page access time was measured. The results means that the implemented system is available level.

• Journal of IKEEE
• /
• v.23 no.3
• /
• pp.768-776
• /
• 2019

With the deployment of 4-th generation industrial revolution, the computer based manufacturing technologies employing advanced IT technology are much more popular than any other past years. In this research, some novel S/W technologies related to the industrial X-ray CT (computed tomography) for the inspection of the industrial parts are introduced. First, newly constructed industrial X-ray CT is presented in this paper, where some basic principles and functions of the CT are described. Then some research platforms are developed to generate more advanced functionalities of the industrial CT. Especially, the data transform from CT to general S/W such as Matlab is conducted. And based on this techniques, some supplementary S/W platform such as GUI (graphical user interface) of the CT S/W and some 3D voxel based image processing technologies can be developed in this paper. The industrial CT is one of the rare research items and it's values can be much more enhanced when it is used with advanced IT technologies.

• Journal of the Korean Society of Radiology
• /
• v.17 no.3
• /
• pp.459-464
• /
• 2023

Due to the development of advanced technology, a lot of digital radiographic equipment has been developed, which is very helpful for accurate diagnosis and treatment, and it is very important to train personnel who have acquired professional knowledge in order to use it safely and effectively. Students are exposed to the risk of radiation exposure in radiography training using diagnostic X-ray equipment, and some educational institutions do not use X-ray equipment due to management difficulties in accordance with the Nuclear Safety Act. As a solution to this, this study developed a medical radiation simulator for education that does not generate radiation by using a vision sensor and self-developed software. Through this, educational institutions can reduce the burden of administrative implementation according to the law, and students can obtain a high level of educational effects in a healthy practice environment without radiation exposure.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.6
• /
• pp.927-933
• /
• 2023

In modern times, with advances in semiconductor technology such as electronic devices, the need to improve the quality of onboard equipment with advanced electronic parts in automobiles, drones, airplanes, projectiles, and various fields, and reduce the impact of various disturbances on onboard equipment is becoming more important. Vibration control through hardware must be determined to prevent damage and improve quality to equipment operating in various environments such as automobiles, drones, airplanes, and projectiles. This study focuses on the study of vibration damping systems to protect mounted equipment from various disturbances and improve stability. Dynamic characteristics analysis, including compressive stiffness, damping rate, and frequency response, and vibration characteristics in the frequency domain of rubber dampers were identified through FEM analysis to identify the characteristics of rubber dampers. Through these findings, we would like to present the criteria for selecting a suitable rubber damper under various disturbance conditions.

• Journal of Practical Engineering Education
• /
• v.16 no.1_spc
• /
• pp.1-9
• /
• 2024

The introduction of smart factory digital twins is a concept that has already been proposed to increase productivity in the manufacturing industry through CPS(Cyber Physics System), and has been applied to specific industrial process stages or partially introduced in stages where simulation is required. However, with the recent development of the 4th Industrial Revolution technology, it is receiving attention again along with XR (Extended Reality) technology. However, because there are not many effective cases, this study analyzed the devices, equipment, and technology of the manufacturing process to build a digital twin applying digital threads and synchronized signals and information to control, remote control, and produce intelligent process automation equipment. A platform capable of analyzing information was proposed and developed. Through this, we designed and built an XR content service platform that can support artificial intelligence and developed it to enable control, remote control, and analysis of production information. A possible platform was proposed and developed. We hope that this study will be helpful in conducting research on many cases, and in the future, expanded research on increasing productivity in each part of the process and production is needed through intelligent models.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.40 no.1
• /
• pp.87-95
• /
• 2020

With the advent of the 4^th industrial revolution and the combination of IoT, there have been diverse domestic and foreign researches for the development of construction industry. Especially, in the large-scale earthwork site where many and various construction equipments are put into, the control system between construction equipments is important for the increase of productivity. Thus, after developing the fleet management system for the optimum operation of construction equipments, the problems were checked and improved for each step in the process of application at site. In order to verify the site application process of the fleet management system for the optimum operation of construction equipments, the analysis on the productivity was performed by inputting the data used for the actual site and the site data using this system and then comparing the data through simulation. The analysis was limited to excavator and dump. In the results of the analysis, the rate of work per hour was increased to the range of 4 % while the cost price was decreased to 4 %. Even though the results of the analysis could be different depending on the site applied, the results showing the increase of workload of equipments and the decrease of cost price in the complex project at earthwork site verify the increase of productivity.

• Electric Engineers Magazine
• /
• v.257 no.1
• /
• pp.21-23
• /
• 2004

2.부하의 개폐(load switching) - 번개가 거의 모든 사람들이 인식할 수 있는 문제인 반면 Switching Surge에 의한 TVS는 대다수가 볼 수 없고 인식할 수 없는 것이다. 전력회사는 아마도 발전된 전력 공급을 위해 1개 이상의 공급원을 사용할 것이다. 자동차와 전주 혹은 나뭇가지와 전선이 충돌하는 사고가 발생할 경우 전력회사의 장비는 즉시 선로이상을 찾아 내어 선로를 OFF시키는 조치를 취한다. 전력 Feeder와 load(부하)의 결과적인 전환으로 강력한 Surge가 발생하게 된다.(중략)

• Defense and Technology
• /
• no.9 s.235
• /
• pp.54-65
• /
• 1998

무기체계 국제협상의 본질과 개념, 협상전략, 협상자의 자세와 유의사항, 그리고 협상사례를 제시하고 완성장비와 수리부속품 획득방법 및 계약방법을 소개한다. 또 최근 주요국가 대외군사판매 현황과 문제점을 분석, 개선방안을 찾고자 한다. 국제계약개선 방안으로 미 국방부의 주요 판매업체와의 직접 계약체결 방식, 인터넷 전자상거래 방식 활용실태, 그리고 국방부 조달본부의 전자상거래 방식 도입 활용계획을 소개한다. 머지않아 우리 군도 문서없는 계약, 즉 인터넷 전자상거래 시스템이 획기적으로 발전되어 국방조달 업무의 투명성과 효율성이 크게 향상될 수 있을 것이다.

• Defense and Technology
• /
• no.1 s.155
• /
• pp.30-37
• /
• 1992

앞으로 개발되는 각종 첨단 무기체계에서의 고도정밀 자동화 추세에 비추어 볼때, 전자광학 추적기(EOTS)는 필수적인 위치를 점하게 될 것으로 예상된다. 국내에서도 EOTS를 사격통제 장비로 채택한 무기체계가 일부운용 및 개발되고 있으나, 그 대부분을 선진기술에 의존하고 있는 실정이다. EOTS는 전자, 신소재, 광학, 컴퓨터 등의 첨단 핵심기술이 복합 응용된 분야로서 우리가 반드시 확보해야할 기술이며, 이에 대한 장기적인 기술육성이 절실히 요망된다

• Defense and Technology
• /
• no.1 s.155
• /
• pp.23-29
• /
• 1992

효과적인 $C^3I$체계 구축을 위해서는 조기경보/전장감시용 정보수집장비의 보완이 시급하므로 이에 대한 많은 연구개발 투자가 필요하며 조기경보/전장감시 정보의 신속한 처리/전파를 위한 정보처리 기법을 계속 연구 발전시켜 나가야 할 것이다. $C^3I$체계의 운용 능력 목표 수준은 한반도의 자연환경하에서 온도, 습도, 먼지, 곰팡이 및 이동시 충격등 제약조건에 대한 내구성이 충분하고 24시간 계속 운용이 가능하며, 고장시 복구 및 Back-up 기능이 지원 가능하도록 되어야 할 것으로 본다