• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.351-354
• /
• 2023

전기차의 보급에 따라 전기차 충전시설이 매 년 확대되고 있으며, 충전에 따른 데이터도 수집되고 있다. 전기차 충전시설의 2가지 방식인 플러그인 방식과 펜터그래프 방식의 특징을 반영할 수 있는 데이터 처리가 필요하고 이에 적합한 데이터 플랫폼 개발이 필요하다. 이러한 데이터 플랫폼의 구축은 향후 전기차 충전시설의 설치와 활용에 도움이 될 것이다. 또한 국내의 이러한 전기차 충전시설의 데이터 플랫폼을 향후에는 아시아 등 해외에 수출하거나 투자 진출 할 수 있는 방안들로 활용할 수 있다. 본 연구에서는 2가지 방식의 전기차 충전시설에 따른 데이터 플랫폼 개발시 고려사항을 도출하였고 이에따라 중국, 인도 및 아시아 시장 진출의 패키징 전략을 도출하였다.

• Smart Media Journal
• /
• v.9 no.1
• /
• pp.67-74
• /
• 2020

As the demand of electric vehicles has been increased recently, their related industries are developing. In particular, the market of electric vehicles charging infrastructure is expanding rapidly and users have much demand in convenience of electric vehicles charging site. Because an charging site using electric pole of KEPCO can make use of that installed nearby public parking lots, there are many commercial construction and convenient facilities near around it. In this situation, users can do shopping or their personal business during charging. In this paper, we proposed the design of charging platform for electric vehicles to support LBS for users to do shopping or personal business conveniently.

• KIPS Transactions on Computer and Communication Systems
• /
• v.6 no.8
• /
• pp.343-352
• /
• 2017

IEC62541, known as OPC-UA, is a standard communication protocol for Smart Grid (SG) and Smart Factory application platform. It was accepted as an IEC standard (IEC62541) in 2011 by IEC TC57, and is extending range of application as collaborating with other standrads. The government's policies to popularize EVs ("Workplace Charging Challenge"), the number of Electric vehicle which try to be charging in the factory is expected to increase. In this situation, indiscreet and uncontrolled EV charging can lead to some problems, such as excess of the peak demand capacity. Therefore, EVs, which is charging in SFs, must be monitoring and controlling to avoid and reduce peak demand. However, the standards for EVs charging differ from the standards for SFs. In other words, to increase the ease of use for drivers, and reduce risk for enterprise, we have needs of study to develop the protocols or to provide interoperability, for EVs charging in SFs. This paper deals with a EV charging management platform installing in a smart factory. And this platform can be easily integrated as part of SF management software. The main goal of this paper is to implement EV management system based on IEC61851 and IEC62541.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.957-958
• /
• 2023

본 연구에서는 공정 내 인체 끼임 사고 및 저출산 고령화 시대 등의 문제들로 인한 인력 감소 문제들을 해결하기 위하여 인공지능 기반의 모빌리티 플랫폼을 개발하였다. 본 플랫폼은 yolo-v4 기반으로 로봇이 공정 내부를 이동하면서 공정 내 불량 와이어를 검출하여 공정 유지보수 관리자에게 알려 주고 실시간으로 공정 내부 상황을 무선으로 모니터링할 수 있는 기술을 연구하였다. 또한, 로봇에는 무선 충전 기능을 갖추고 있어 추가적인 공정 내 인체 끼임 사고 등을 예방할 수 있도록 하였다. 본 연구 결과에서는 불량 와이어 검출 시, 평균 92.1%의 정확도를 보였으며, 공정 제품에 대한 양품, 불량품의 검출은 평균 98%의 정확도를 보였다. 또한, 실시간 무선 영상 모니터링는 24fps로 전송되어 공정 내부를 살피는 것에 유의미한 결과를 보였다.

• Journal of the Korea Society of Computer and Information
• /
• v.26 no.11
• /
• pp.11-19
• /
• 2021

In this paper, we propose a prototype platform combined with the power management system using, as an auxiliary power storage device, a supercapacitor that can be fast charged and discharged with high power efficiency as well as semi-permanent charge and discharge cycle life. For the proposed platform, we designed a technique which is capable of detecting the state of power cutoff or resumption of power supplied from the solar panel in accordance with physical environment changes through an interrupt attached to the micro-controller was developed. To prevent data loss in a computing environment in which continuous power supply is not guaranteed, we implemented a low-level system software in the micro-controller to transfer program context and data in volatile memory to nonvolatile memory when power supply is cut off. Experimental results shows that supercapacitors effectively supply temporary power as auxiliary power storage devices. Various benchmarks also confirm that power state detection and transfer of program context and data from volatile memory to nonvolatile memory have low overhead.

• The Journal of the Korea Contents Association
• /
• v.19 no.9
• /
• pp.402-410
• /
• 2019

Local area festivals have grown on a scale for the past 20 years, but have suffered ups and downs. Through the trial and error of the festival operation, problems such as prediction of the number of visitors, planning of event scale, calculation and expansion of sales volume, and management of various participants in the duration were highlighted. To solve, this study designed and developed a mobile payment system and festival operation management system for local scale festivals as a platform operating system of web and app combined. The results of this study presents four basic functions. It includes ticketing management, attendance identification and entrance control, charge of festival currency and use of payments, real-time provision and management of related information, and performance reporting for each role. It was applied to local festivals in practice as to enable local shop owners to participate in advertisements or sponsorships and confirmed their contribution to local commercial market and the revitalization of festivals through this system.

• Journal of Service Research and Studies
• /
• v.13 no.1
• /
• pp.159-175
• /
• 2023

Mass production has long been the most important production paradigm in establishing a company's strategy as a method of producing various products. However, mass production cannot now be the most important paradigm as companies' competitive environment and consumer needs diversify. In particular, consumers' needs are becoming more diverse and rapidly changing, making it difficult for companies to respond to consumers' needs. Mass customization is the most notable paradigm reflecting this trend, and mass customization aims to produce a variety of products tailored to the needs of customers at a low cost. In this study, the theory and concept of a product architecture system were used to specify a method of realizing mass-customized services, and a case study was conducted focusing on the internal furniture model of a camping car. In particular, unlike previously when companies developed product platforms and modules focusing on productivity, a method of developing and configuring product platforms and modules was suggested by reflecting consumer requirements first, and its effectiveness was considered. As a result of the study, it was confirmed that it was effective in replacement, recyclability, line-up, and chargeability by designing through internal factors of the product architecture system and verifying the effectiveness of the results with external factors. It is expected that further empirical research will be led through a design process using a product architecture system in the future.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2008.04a
• /
• pp.1117-1120
• /
• 2008

In order to develop an Ultra High Performance Concrete (UHPC) suited to the Korean conditions, KICT has carried out several parts of research in the field of UHPC from 2003. KICT developed UHPC which was a structural material exhibiting very remarkable mechanical performances with compressive strength, tensile strength and flexural strength rising up to 200MPa, 15MPa and 35MPa, respectively. In addition, this material presents exceptional durability regard to the very low diffusion and penetration speeds of noxious substances like chloride ions. This 200MPa strength concrete has been effectively adopted for the construction of bridges like Sherbrooke Bridge in Canada in 1997, Sunyu Bridge in Korea in 2002, Meata Bridge in Japan in 2003, Sheperds Guelly Creek Bridge, the first ultra-high strength concrete highway bridge in Australia in 2004 and, more recently in 2005, Mars Hill highway bridge in USA in 2005. The construction of structures using ultra high performance concrete is a worldwide development trend of concrete technology for the construction of advanced facilities in the 21st century.

• Journal of Digital Convergence
• /
• v.12 no.11
• /
• pp.289-298
• /
• 2014

Recently, the traditional paradigm in railroad technology is changing as more efficient and cost-effective electric vehicle (EV) technologies have emerged. The original concept of PRT (Personal Rapid Transit) proposed in the past has come to be regarded as unrealistic, but its feasibility is improving through the utilization of an EV platform. In particular, battery-powered vehicles pose difficult technical challenges in attempts to achieve reliable and efficient operation. However, based on the inductive power transfer (IPT) technology, the fast charging of supercapacitors with high energy density can contribute to overcoming this technical challenge and promote the transition to electric-powered ground transportation by improving the appearance of cities. This study discusses the development process of a power supply system for PRT, including concept design, numerical analysis, and device manufacturing, along with performance predictions and evaluations. In terms of results, the system was found to meet the performance requirements for power supply modules on a test-bed.

• Journal of Space Technology and Applications
• /
• v.3 no.2
• /
• pp.101-117
• /
• 2023

Active debris removal, a technology that approaches and removes space debris in orbit, and the on-orbit service, a technology for extending the mission life of satellites by fuel charging or by exchanging the battery, are gaining interest with the growth of the space community. SaTReC plans to develop a satellite capable of capturing and removing Korean satellites orbiting in space after the end of their missions. In contrast to the previously launched satellites by Korea, which were mainly intended to observe Earth and the space environment, rendezvous/docking technologies, as required in the future during, for instance, space exploration missions, will be implemented and demonstrated. In this paper, an orbital transition method for next-generation small satellites that will capture and remove space debris will be introduced. It is assumed that a small satellite with a mass of approximately 200 kg will be injected into the mission orbit through Korea Space Launch Vehicle-II in 2027. Because the satellite must access the target using a minimum amount of fuel, an approaching technology using Earth's J2 perturbation force has been developed. This method is expected to enable space debris removal missions for relatively lightweight satellites and to serve as the basis for carrying out a new type of space exploration in what is termed the 'Newspace' era.