• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.597-598
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• 2018

최근의 미래교통시스템은 주로 교통체계를 활용한 교통정보의 수집과 관리, 제공을 함으로서 교통안전을 도모하고 있다. 그러나 본 논문에서는 현재 활용되고 있는 교통 인프라인 교통안전표지를 활용한 교통안전을 제안하고자 한다. 교통안전표지를 호스트로 하여 센싱 된 데이터를 차량이 수신하게 됨으로서 차량간 또는 인프라간 통신을 하게 된다. 센싱 데이터의 정보를 활용함으로서 다양한 정보를 얻게 되는데, 공사구간 뿐만 아니라 교통사고 등도 활용이 가능하다. 따라서 본 논문은 센싱 데이터의 프레임을 간단하게 설계하고, 향후 지속적인 연구를 통하여 교통안전에 이바지하고자 한다.

• Journal of Power Electronics
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• 제6권1호
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• pp.18-28
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• 2006

The Electric Power Subsystem (EPS) is one of the most critical systems on any satellite because nearly every subsystem requires power. This makes the choice of power systems the most important task facing satellite designers. The main purpose of the Satellite EPS is to provide continuous, regulated and conditioned power to all the satellite subsystems. It has to withstand radiation, thermal cycling and vacuums in hostile space environments, as well as subsystem degradation over time. The EPS power characteristics are determined by both the parameters of the system itself and by the satellite orbit. After satellite separation from the launch vehicle (LV) to its orbit, in almost all situations, the satellite subsystems (attitude determination and control, communication and onboard computer and data handling (OBC&DH)), take their needed power from a storage battery (SB) and solar arrays (SA) besides the consumed power in the EPS management device. At this point (separation point, detumbling mode), the satellite's angular motion is high and the orientation of the solar arrays, with respect to the Sun, will change in a non-uniform way, so the amount of power generated by the solar arrays will be affected. The objective of this research is to select satellite EPS component types, to estimate solar array illumination parameters and to determine the efficiency of solar arrays during both detumbling and normal operation modes.

• 디지털콘텐츠학회 논문지
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• 제18권5호
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• pp.889-894
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• 2017

본 논문은 방목형 축산관리의 효율성을 극대화하기 위해 무인비행체 기반의 자동항법과 근거리무선통신망 기술, 자동이착륙 시스템을 및 개체관리 운영 앱을 통하여 스마트팜 구현에 목적이 있다. 산지생태축산 활성화를 위하여 축산 ICT 융합 기술을 접목한 방목 목장 관리 시스템은 방목 가축의 생산성 향상과 우수품질을 생산하는 인프라 조성과 FTA에 대응하는 축산 경쟁력 확보에 기여할 것으로 예상된다. 축산업에 종사하는 부족한 인력을 대체하는 기술로 농가에 보급을 통해 경쟁력 향상에 기여할 것이다.

• 대한인간공학회지
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• 제31권4호
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• pp.577-583
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• 2012

Objective: This paper describes the process and results related to the development of gesture recognition-based natural user interface(NUI) for vehicle maintenance e-Training system. Background: E-Training refers to education training that acquires and improves the necessary capabilities to perform tasks by using information and communication technology(simulation, 3D virtual reality, and augmented reality), device(PC, tablet, smartphone, and HMD), and environment(wired/wireless internet and cloud computing). Method: Palm movement from depth camera is used as a pointing device, where finger movement is extracted by using OpenCV library as a selection protocol. Results: The proposed NUI allows trainees to control objects, such as cars and engines, on a large screen through gesture recognition. In addition, it includes the learning environment to understand the procedure of either assemble or disassemble certain parts. Conclusion: Future works are related to the implementation of gesture recognition technology for a multiple number of trainees. Application: The results of this interface can be applied not only in e-Training system, but also in other systems, such as digital signage, tangible game, controlling 3D contents, etc.

• 한국컴퓨터정보학회논문지
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• 제21권9호
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• pp.65-72
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• 2016

Vehicle and marine navigation which are currently being commercialized provide route guidance service by specifying a fixed position as a destination. In the route guidance service of existing navigation, if the destination has to be changed in the middle, a new destination must be designated again to obtain the navigation service. However, if the destination can't be designated, it is difficult to clearly use it. In this paper, in order to overcome the difficulties of directions in the existing navigation, a new navigation specifying moving targets as the destination has been developed to get the directions. A proposed system is that a group is made and a group manager is appointed as a destination and then a user can get the route guidance based on location of the group manager. In the service way, relationship between the group manager and user is one-to-many and relationship between the user and group manager is one-to-one. The proposed technology is able to provide services that the user can easily find the moving targets such as the positioning surrogate drivers, tracking routes and location among travelers and finding children.

• Journal of Contemporary Eastern Asia
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• 제16권2호
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• pp.93-109
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• 2017

Cross-culturally, acts of sharing are recognized as an effective method to initiate and maintain human relationships in real-life situations by promoting continuous reciprocal exchanges between donors and recipients. Specifically, this study examines the effects of sharing a media product from the perspective of the givers, as compared to effects on the receivers. "Gangnam Style," a Korean music video, is of interest because it was spontaneously shared worldwide by young adults who used it as a vehicle to build and strengthen social relationships, among young adults. While both the givers and receivers of the "Gangnam Style" benefited from bridging new relationships, the results of this study found that those who gave "Gangnam Style" benefited more in terms bonding already existing relationships, compared to those who received materials. This study provides further evidence in support of the "sender-effect" paradigm and enhances our understanding of how online sharing contributes to the construction of social capital among the young adults.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.941-946
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• 2006

It followed in system development and SMRT(Seoul Metropolitan Rapid Transit Co)System reached to an automatic train operation(ATO) and driverless operation(DLM) from the manual operation due to the train driver. The train like the general bus or the car vehicle was not serial riding in a car and the Parallel concept which the numerous passenger rides in a car simultaneously occur frequently the charge of the train driver unmanned bitterly from existing manual handling was a possibility of doing, train open door control(ODM) which bites also ATO, it handles it minimized. Like this ATO/DLM, the control system which bites being a Wayside to Train communication for immediacy, it is a system of the Vital concept the immediacy of the citizen Data evil the radio information transmission and the train of the interface which is accurate from unmanned operation and, will decipher, will accomplish it will guarantee. It respects the passenger accident prevention and an air question environment improvement from subway platform and phul leys the screen door of Platform(PSD) with the fire tube frost it refers and part it treats and to sleep it does, ODM which bites is accuracy and immediacy of altitude and when seeing from the viewpoint which demands the trust of altitude, ODM system the trust of car incest interface in the equipment construction which is safe and the comparative analysis back of the system analysis against the control which bites and case study and other subway system it leads from the research which it sees and signal - train in base grudge to sleep it contributes it does.

• 한국수소및신에너지학회논문집
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• 제30권6호
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• pp.513-522
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• 2019

It is not easy to refuel quickly and safely with 70 MPa hydrogen. This is because the temperature in the vehicle tank rises sharply due to Joule-Thomson effect, etc. Thus protocols such as SAE J2601 in the United States and JPEC-S 0003 in Japan were established. However, they have the problem of over-complexity and lack of versatility by setting the preconditions for hot and cold cases and introducing a number of look-up tables. This study was conducted with the ultimate goal of developing new protocols based on complete real-time communication. Thermodynamic models were made and programs were developed for hydrogen refueling simulations. Simulation results confirmed that there are five parameters in the influencing factors of the hydrogen refueling protocol.

• 한국통신학회논문지
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• 제39B권3호
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• pp.180-187
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• 2014

본 논문은 도로에 설치된 인프라 시스템 및 타 자율 주행 차량과 협력하여 주행하는 협력형 무인 자율 주행 차량 기술을 위한 멀티케스트 통신 기법을 소개한다. 협력형 자율 주행 차량은 주행 안전성 향상을 위해 인프라 시스템 및 주변 차량과 통신한다. 교환되는 정보는 차량 안전과 관련 된 정보이며 다수의 자율 주행 차량에게 정의된 시간 내에 반드시 전송되어야 한다. 그러나 차량 통신 국제 표준인 WAVE는 협력형 자율 주행을 위해 요구되는 멀티케스팅 통신의 높은 전송 성공을 보장하지 않는다. 본 논문에서는 WiVCL이라는 MAC 계층의 고신뢰 멀티케스트 기법을 제안한다. IEEE 802.11p 및 BMW와 비교한 결과 WiVCL은 높은 전송 성공률과 예측 가능한 전송 지연 시간을 보여줌을 확인할 수 있었다.

• 한국정보통신학회논문지
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• 제4권1호
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• pp.165-177
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• 2000

퍼지 제어기는 퍼지 제어기 설계를 위한 소속 함수와 제어규칙의 구성 시 전문가의 경험적인 지식에 전적으로 의존하고 있다. 때문에, 제어기의 객관성이 보장되지 않으며 설계자가 예상하지 못한 플랜트 매개 변수의 변동이나 돌발적인 상황에서는 제어기의 성능이 저하되는 문제점을 가지고 있다. 이와 같은 문제점을 개선하기 위해서, 본 논문에서는 제어 규칙의 수를 감소시키고 직관적인 제어기를 구성하기 위하여 Fusion Method과 퍼지 제어기의 제어 규칙과 소속 함수의 매개변수를 조정하여 효율성을 향상시킬 수 있는 유전자 알고리즘을 적용한 자기 조직화가 가능한 퍼지 제어기를 제안하였다. 제안된 알고리즘의 타당성 검증을 위하여 무인 운송 장치 제어기를 구성하여 다양한 환경에서 모의 실험을 수행하였다.