• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.534-537
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• 2017

최근 공용 세탁기는 현대인의 필수로 대두 되고 있다. 이를 위하여 임베디드 시스템에 타이머 등의 센서를 부착하여 데이터를 수집하고, 카메라를 이용한 영상 전송 기능으로 스마트 기기에서 현재 예약 및 Data까지 제어 할 수 있도록 하여 기존의 일반적인 세탁기에서 진보 된 스마트 고용 세탁기 사회 문화를 이루고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.1080-1081
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• 2015

우편함이 멀리 떨어져 있으면 우편이 도착해도 실시간으로 확인이 불가능하다. 또한 잠금 여부에 따라 누구나 쉽게 우편을 수령할 수 있으므로 도난의 위험이 있다. 따라서 사물 인터넷을 사용하여 스마트폰으로 실시간 알림이 뜨는 자동화 시스템을 도입해 편의성과 보안 가능성을 높인 우편함 시스템이 필요하다. 본 논문에서는 사물인터넷 기술을 이용한 우편함 개발 경험을 바탕으로 자동화 시스템의 부재로 인해 발생하는 문제점을 알아보고 이를 해결하기 위한 방법을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.597-599
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• 2018

최근 IOT(Internet of Things)환경에서 위치기반 서비스를 제공하기 위해 실내 위치인식 연구가 활발히 진행되고 있으며 실내 위치인식 기술은 주로 WiFi, 블루투스, RFID 등으로 구현되고 있다. 본 논문은 Arduino를 이용해 WiFi 측정 및 통신이 가능한 Smart Watch를 제작하였다. 실내위치 측위를 위해 WiFi Fingerprinting기법 Radiomap을 구축한 다음 Arduino Smart Watch에서 측정한 AP신호 값을 Radiomap과 비교하여 실내위치 측정 및 데이터 수집하였다. 향후 수집된 다수의 사용자 데이터를 군집도 분석하거나 실내공간에서의 IOT(Internet of Things)분야에 활용 가능 할 것으로 예상된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.182-185
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• 2015

IT 기술분야에서 IOT(Internet of Things) 는 현재 주목받는 기술 중 하나로서 여려 IT 분야에서 연구활동이 이루어지고 있는 추세이며 이로 인해 IT 기기 뿐만 아니라 일반 기기들과도 연결이 되어 빠른 시일 내에 사물인터넷 시대가 여릴 것으로 예측되고 있다. 본 논문에서는 이런 추세에 맞추어 스마트 홈네트워크 시스템에서는 가정내의 난방시스템에 대한 모니터링 및 자동온도측정 센서를 활용하여 적정온도 혹은 사용자의 활동 여부 등을 파악하여 설정된 온도보다 낮거나 높을 시에 자동으로 실내온도를 변경하고 나아가 원하는 가정내의 일부 부분만을 난방 할 수 있도록 자동화하는 방법에 대한 시스템 설계를 제안하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1346-1348
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• 2021

본 논문은 4차산업이 발달함에 따라 일반인들도 쉽게 인공지능과 결합한 CCTV를 구축할 수 있는 것을 목표로 하며, 더 나아가 1급보안시설인 항만에서 자주 발생하는 입국자 월담, 행방불명들을 인공지능 CCTV로 감시하여 보다 쉽게 잡고 인력감소로 경제적 이익을 도모할 수 있다.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.143-151
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• 2016

Many people interested in indoor air quality monitoring since they spend a majority of their time indoors such as homes and offices. This paper proposes the effective indoor air quality monitoring system and it can gauge carbon dioxide, particulate matter and VOCs(Volatile Organic Compounds) which can be harmful to humans. The proposed system is composed of three main modules which are device, web server, and mobile application. In order to evaluate the performance, we tested two cases which are candle and smoke. We monitor the condition of indoor air quality with our mobile application. Also, we developed the information graphics to compare the condition of air quality between indoor and outdoor and this mobile application improves usability.

• Korean Journal of Remote Sensing
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• v.37 no.5_2
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• pp.1235-1243
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• 2021

Geostationary Ocean Color Imager 2 (GOCI-II) on Geo-KOMPSAT-2 (GK2B)satellite was developed as a mission successor of GOCI on COMS which had been operated for around 10 years since launch in 2010 to observe and monitor ocean color around Korean peninsula. GOCI-II on GK2B was successfully launched in February of 2020 to continue for detection, monitoring, quantification, and prediction of short/long term changes of coastal ocean environment for marine science research and application purpose. GOCI-II had already finished IAC and IOT including early in-orbit calibration and had been handed over to NOSC (National Ocean Satellite Center) in KHOA (Korea Hydrographic and Oceanographic Agency). Radiometric calibration was periodically conducted using on-board solar calibration system in GOCI-II. The final calibrated gain and offset were applied and validated during IOT. And three video parameter sets for one day and 12 video parameter sets for a year was selected and transferred to NOSC for normal operation. Star measurement-based INR (Image Navigation and Registration) navigation filtering and landmark measurement-based image geometric correction were applied to meet the all INR requirements. The GOCI2 INR software was validated through INR IOT. In this paper, status and results of IOT, radiometric calibration and INR of GOCI-II are analysed and described.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.462-474
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• 2018

The development of bio-sensing technology made it easy to collect various biometric information that was only available in large medical devices. The miniaturization of sensors makes it simple to carry out various health checkups that It did in person to the hospital by improving the portability of diagnostic devices. It is able to combine sensors into portable devices such as Smartphones, apply advanced Internet of Things (IOT) technology, and create new form factors for medical devices such as ultra-small modules that can be inserted or attached to their bodies. The results can be checked immediately through portable information devices such as smart phones. Although commercialization is still slow in Korea, new technologies are being applied in various ways in countries such as the United States that have granted remote medical services. Medical demand, supply and cost in South Korea are growing ahead of a super-aged society. Under these circumstances, attention is focusing on whether smart healthcare, a new concept, can complement the existing medical system. This study identifies the technology trends associated with smart health care and categorizes various healthcare products in the UX design aspects. In addition, the UX design approach and guidelines for applying smart healthcare technologies to the elderly, the intended users, are presented. This research will provide a reference to a new social issue, the UX-design approach to solving the problems of the aged society.

• Korean Journal of Remote Sensing
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• v.36 no.4
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• pp.645-652
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• 2020

GK2A(GEO-KOMPSAT-2A)satellite has been operating excellently since its launch in Dec 2018. The secondary payload called KSEM (Korean Space Environment Monitor) was equipped into the GK2A satellite along with AMI (Advanced Meteorological Imager) sensor. KSEM is the Korea's first operational geostationary space weather sensor and has been developed collaboratively by KHU (Kyung Hee University) and KARI (Korea Aerospace Research Institute). The interface works between KSEM and GK2A were conducted by KARI. Various interface tests, which aim for evaluating effective functionality of KSEM with the spacecraft, were intensively conducted at KARI facilities. Main tests consisted of mechanical and electrical check-up activities between the KSEM and GK2A. Interface tests of KSEM, which involve pre-launch tests such as ETB and GK2A system level tests, were conducted to evaluate functional and performance of KSEM before the launch. The tests carried out during the GK2A LEOP (Launch and Early Orbit Phase) and IOT (In Orbit Test) period (Dec 2018 ~ June 2019) showed excellent in-orbit performance of KSEM data.

• 제어로봇시스템학회:학술대회논문집
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• 1994.10a
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• pp.218-223
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• 1994

On the satellite communication system, conventional key issues of control have been focused on the attitude and orbit control, monitoring and control of communication payload such as IOT(In-Orbit-Test) and CSM(Communication System Monitoring) and so on. As the vulnerabilities are being increased on the satellite communication network, security services are required to protect it against security violated attacks. In this paper, a security architecture for satellite communication network is presented in order to provide security services and mechanisms. Authentication protocol and encryption scheme are also proposed for spacecraft command authentication and confidentiality.