• Proceedings of the KIPE Conference
• /
• 전력전자학회 1998년도 전력전자학술대회 논문집
• /
• pp.332-336
• /
• 1998

Recently, the BLDC(Brushless DC) motor has been increasingly applied to home appliance and the study of BLDC motor drive is extensively processing, so it is necessary to investigate the characteristic of the BLDC motor drive. In this paper, we proposed the modeling of interior permanent - magnet BLDC motor drive. The state model of motor and the model of inverter using pulse width modulation are included. The modeling is verified by the experimental results.

• Proceedings of the KIPE Conference
• /
• 전력전자학회 2002년도 전력전자학술대회 논문집
• /
• pp.263-266
• /
• 2002

The Switched Reluctance Motor(SRM) drive system could operate in a very wide speed range with high efficiency There are no windings, no magnet and a brushless structure on the rotor, and there is only multi-phase centralized windings on the stator, those give rise to its simple and firm structure. It has good Prospects for application. such as industrial and home appliance. in aircraft. This paper is to show a development trends in SRM technology.

• Proceedings of the KAIS Fall Conference
• /
• 한국산학기술학회 2008년도 추계학술발표논문집
• /
• pp.488-491
• /
• 2008

본 연구에서는 가전제품 서비스 엔지니어의 직무만족도가 계속근무의사에 어떠한 영향을 미치는 지를 조사 분석하였다. 또한 직무만족도에 영향을 미치는 요인이 무엇인지를 조사 분석하였다. 그 결과 엔지니어 개인적 특성에 있어서는 성격이 직무만족도에 영향을 미치는 요인으로 파악되었으며, 조직적 특성에 있어서는 사회적 지지와 급여 및 복리후생이 영향을 미치는 요인으로 분석되었다. 직무 자체의 특성에 있어서는 업무 적정성이 직무만족도에 영향을 미치는 것으로 파악되었다. 또한 이러한 직무만족도는 계속근무의사에 의미있는 영향을 미치는 것으로 조사 분석되었다.

• Proceedings of the SAREK Conference
• /
• 대한설비공학회 2005년도 하계학술발표대회
• /
• pp.127-127
• /
• 2005

• Proceedings of the Korea Information Processing Society Conference
• /
• 한국정보처리학회 2017년도 추계학술발표대회
• /
• pp.1137-1140
• /
• 2017

본 연구에서는 Java기반 Android App과 라즈베리파이 보드를 기반으로 Wi-fi 통신을 통해 스마트폰과 라즈베리파이를 연동하여 집안의 커튼, 전구, 카메라 등과 같은 기기들을 제어하는 시스템을 구현하는 방법을 제시하였다. 기존의 가정의 전구와 커튼과 같은 전자기기들을 스마트폰을 통하여 자택에서 편안하게 제어할 수 있으며 향후 지어지는 신축 아파트들이나 병원과 같은 시설에서 이러한 IoT 기술이 접목될 가능성이 있기 때문에 라즈베리파이와 하드웨어를 연동하여 가정기기를 제어하는 시스템을 구현하였다.

• Journal of Applied Reliability
• /
• 제5권4호
• /
• pp.427-438
• /
• 2005

This paper is concerned with the problem in predicting the reliability of an LCD product, Product reliability calculation methods classify accelerated life test (ALT) and using the reliability standard as MIL-HDBK-217F and Telcordia SR-332. The reliability standard can calculate estimating value more quickly than accelerated life test. The system MTBF was calculated in accordance of Telcordia SR-332 standard which includes directions of part electronic measurement, temperature rise and environmental test data. This research is intended to obtain the useful information for each electric design step to save time and cost.

• Proceedings of the Korean Information Science Society Conference
• /
• 한국정보과학회 2004년도 가을 학술발표논문집 Vol.31 No.2 (1)
• /
• pp.409-411
• /
• 2004

홈 네트워크 기술은 최근에 급격히 발달하고 있으나, 안전성 분야에 대해서는 이직 연구가 미흡한 실정이다. 본 논문에서는 홈 네트워크를 위한 보안 어플라이언스를 제안한다. 필터링과 리맵핑 기술을 이용하여 악의적인 접근을 차단하고, 홈 네트워크 내부의 정보를 보호함으로써 홈 네트워크의 안전성을 향상시키며. 사용자의 편의성을 고려한 통합된 환경설정 기능을 제공하는 보안 어플라이언스를 설계하고자 한다.

• The KIPS Transactions:PartA
• /
• 제14A권5호
• /
• pp.287-294
• /
• 2007

Most of existing integrated remote controllers can control only a group of home appliances made by the same manufacturer. And they cannot monitor the status of home appliances since they are based on analog RF(Radio Frequency) signal and operate in a uni-directional manner In this paper, we propose a software framework for a hi-directional universal remote controller(URC) which monitors the status of home appliances in Wireless Personal Area Network(WPAN). The URC can handle the control and status messages which consist of a command with related arguments. When a user wants to control any home appliance, the URC can be dynamically configured to its dedicated remote controller by generating a GUI according to its profile. Any other devices which have a capacity for understanding the profile from the controlled devices can play the same role of the URC.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• 제2권4호
• /
• pp.73-80
• /
• 2009

In this paper, we implemented the integrated gateway for health care and home network system based on PLC(Power Line Communication) and Zigbee. The designed system is consists of sensors, integrated gateway, Zigbee module and PLC modem. The integrated gateway will transmit the data which is collected by health care sensors to health care control system and control an appliance for comfortable environment to medical facilities. The implemented gateway can support various health care and home network service.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 한국정보통신학회 2013년도 추계학술대회
• /
• pp.737-740
• /
• 2013

The widespread use of smart home appliances with smart home networking is leading to a next generation of a new technology that exploit user contextual information to provide a richer experience. However, in the most part of home networking systems the intelligent personalization services between user and home appliances have not been adequately supplied in respect of the long lifespan of the legacy home appliances. In addition, without installing smart home appliances when constructing new building the users can not use this service. To use this service, the legacy home appliance need to attach enabler equipped with the various sensors just as it is smart home appliances. The goal is to create a service that enables appliances to exchange information and control their actions through the IoT gateway to achieve nonintrusive behavior and customized services without human intervention. In this paper, we propose a ontology model to represent the user context to be able to induce right service automatically and use it to discover, utilize and enhance different services in real time that the user may be interested in.