• Proceedings of the KIEE Conference
• /
• 1999.07f
• /
• pp.2556-2558
• /
• 1999

We present voltage-source inverter for variable speed of washing machine. In the case of previous washing machines only on/off contol of motor was satisfied but these days the desire of customers moves to more silent and energy saving machine. Therefore many white goods manufacturers consider variable driving methods of motor. Nowadays variable speed Induction motors powered by inverters are becoming more and more popular. In this paper the principles of constant V/F control of Induction motor used in washing machine and space vector PWM technique are reviewd. Implementation issues such as command voltage generation, switching pattern determination, speed and power measurement are also presented. Experimental results are included in the end of the paper.

• International Journal of Fuzzy Logic and Intelligent Systems
• /
• v.12 no.3
• /
• pp.193-197
• /
• 2012

This paper focuses on identifying which appliance is currently operating by analyzing electrical load signature for home energy monitoring system. The identification framework is comprised of three steps. Firstly, specific appliance features, or signatures, were chosen, which are DC (Duty Cycle), SO (Slope of On-state), VO (Variance of On-state), and ZC (Zero Crossing) by reviewing observations of appliances from 13 houses for 3 days. Five appliances of electrical rice cooker, kimchi-refrigerator, PC, refrigerator, and TV were chosen for the identification with high penetration rate and total operation-time in Korea. Secondly, K-NN and Naive Bayesian classifiers, which are commonly used in many applications, are employed to estimate from which appliance the signatures are obtained. Lastly, one of candidates is selected as final identification result by majority voting. The proposed identification frame showed identification success rate of 94.23%.

• Journal of Institute of Control, Robotics and Systems
• /
• v.16 no.1
• /
• pp.83-89
• /
• 2010

If an appliance perceives the location or health condition of a resident in the smart home, it can provide more intelligent service actively. That is, while the conventional appliance is operated by manual input of a resident, the location-based human adaptive appliance detects the resident's information such as location, activity pattern, or health condition by itself and provides the most suitable living condition for the resident autonomously. This paper presents the real-time location-based metabolic rate estimation method that measures the amount of physical activity (metabolic rate) for location-based human adaptive air-conditioner. And, the feasibility of the algorithm is evaluated experimentally on a test bed using the pyroelectric infrared sensor-based indoor location aware system (PILAS) that is a non-terminal-based location-aware system.

• Proceedings of the Korea Society of Design Studies Conference
• /
• 2005.05a
• /
• pp.266-267
• /
• 2005

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.8 no.5
• /
• pp.1104-1113
• /
• 2007

As there have recently been a rapid development in a supercomputer network infrastructure and an increase in the use of wireless terminals such as a PDA and cellular phone, people realize that it is highly required that they develope a various types of application services to integrate wireless network and engage them. On top of that, because current appliances are being converted into digital domestic appliances, and network and such appliances react upon each other, domestic appliances are now evolving to Internet appliances. Thus, people eager to establish a home network, which can offer a various sorts of services to customers because such appliances can share and send the data when such appliances are connected to power lines, telephone wires, and IEEE1394. Along with this, people are also enthusiastically conducting a study on Internet Application, which monitor and control the internet appliances triggered by connecting home network and supercomputer network. This study focuses on designing and developing an integrated wireless home server by effectively integrating wire and wireless network: It can approach and control each internet appliance connected with the home network inside and outside the house. In this study we also test it with an internet appliance simulator.

• Proceedings of the KIEE Conference
• /
• 2007.07a
• /
• pp.1902-1903
• /
• 2007

인구의 급속한 고령화에 따른 가정에서의 의료서비스나 건강관리를 위한 홈 헬스케어 및 실버케어 의료기기가 점차적으로 보급, 확대되고 있다. 또한 관련된 가정용 전기기기나 의료기기가 개발됨에 따라 이들기기의 공통 표준화가 필요하며 본 논문에서는 사용시에 가장 중요한 인체에 대한 전기적 안전에 관한 기준연구를 수행하였다.

• The Journal of the Korea Contents Association
• /
• v.5 no.5
• /
• pp.26-32
• /
• 2005

Standardization of the home-networking technologies and the home network trial has been tried to activate the home network services and develop the new business models. Home network mobile service using a cellular phone provides the control and monitoring the states of the information appliances and HA(home automation) devices through a home network gateway interworking with a home server. For this purpose, the home network mobile application in a cellular phone can automatically change the configuration of the information appliances and HA devices interworking with a home server. In this paper, we propose the home appliance auto-configuration scheme using XML for home network mobile services. The proposed scheme is implemented on WIPI of the domestic mobile platform standardization.

• Journal of Institute of Control, Robotics and Systems
• /
• v.20 no.5
• /
• pp.486-494
• /
• 2014

Intelligent homes consist of ubiquitous sensors, home networks, and a context-aware computing system. These homes are expected to offer many services such as intelligent air-conditioning, lighting control, health monitoring, and home security. In order to realize these services, many researchers have worked on various research topics including smart sensors with low power consumption, home network protocols, resident and location detection, context-awareness, and scenario and service control. This paper presents the real-time metabolic rate estimation method that is based on measured heart rate for human adaptive appliance (air-conditioner, lighting etc.). This estimation results can provide valuable information to control smart appliances so that they can adjust themselves according to the status of residents. The heart rate based method has been experimentally compared with the location-based method on a test bed.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.11 no.3
• /
• pp.67-74
• /
• 2011

With the rapid increase of recent smart phone diffusion, the convergences of home network environments and intelligent home appliances such as digital TV, internet refrigerator, DVD, digital video, communication appliance using a smart phone are highly focussed and become the recent trends in IT industry. In this paper, we design and implement home appliance control system based on the smart phone(Android) network environments. Through several experiments using Android smart phone, we confirmed that the proposed system can control and monitor indoor home appliances conveniently anywhere and anytime from outdoor.

• The KIPS Transactions:PartC
• /
• v.11C no.1
• /
• pp.135-140
• /
• 2004

WLAH and WPAN technique are proposed as a home networking protocol in order to solve the problem of wireless communications and the bandwith extension. but, it is difficult to embed those technique to the home appliance devices because of economical efficiency and difficulty of standardization like a Bluetooth technique. In this paper, we suggEest a low-speed wireless protocol for wireless MODEM to control multiple devices. And we assure that this protocol not only maintain a accuracy and a characteristic of control information, but it is also suitable to a processor having low-processing ability and a processor embedded In the home appliance device through implementation of robot system and stable performance.