• ETRI Journal
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• v.35 no.4
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• pp.677-686
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• 2013

In this paper, we first introduce a general architecture of an energy management system in a home area network based on a smart grid. Then, we propose an efficient scheduling method for home power usage. The home gateway (HG) receives the demand response (DR) information indicating the real-time electricity price, which is transferred to an energy management controller (EMC). Referring to the DR, the EMC achieves an optimal power scheduling scheme, which is delivered to each electric appliance by the HG. Accordingly, all appliances in the home operate automatically in the most cost-effective way possible. In our research, to avoid the high peak-to-average ratio (PAR) of power, we combine the real-time pricing model with the inclining block rate model. By adopting this combined pricing model, our proposed power scheduling method effectively reduces both the electricity cost and the PAR, ultimately strengthening the stability of the entire electricity system.

• Journal of Internet Computing and Services
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• v.16 no.3
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• pp.117-126
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• 2015

The concept of Creating Shared Value (CSV) has emerged as a solution for companies' sustainable growth and social problems through collaboration of business activities and social demand. Therefore, studies on shared value creativity and measurement of companies' performances are required. However, most recent studies have applied the CSV concept to existing business models or measure shared value considering only economic value. Few studies have considered the appropriateness of applying the CSV or discussed performance measurement with respect to industry characteristics. This study selects the industry expected to have the greatest created value with applying the CSV, and then suggests measurement of performance in this industry. First, through the expert interview, the study selects one from among South Korea's 10 main industries, which is expected to solve social demand through convergence with the IT industry, and to create new value for a traditional industry. The Home Appliance industry was selected as appropriate, because it has industrial growth stagnation under the smart environment. Moreover, it is facing problems such as energy savings and environmental issues. The study goes on to suggest, based on Michael Porter's three strategic levels, measurement variables of the value creation process and performance. This study has limitations from an empirical perspective. However, as the interest of applying CSV to business is growing, it is meaningful to explore the CSV strategies activities and measurement performance based on industry-specific characteristics.

• Journal of Platform Technology
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• v.6 no.3
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• pp.17-22
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• 2018

Smart home is a technology for monitoring and controlling all the information about a house by integrating various home applications like cooling, heating, lighting, kitchen and security systems into a network. Although home appliances have become more convenient to use due to the development of smart home technology, they are also more vulnerable to information security hazards. Unauthorized visitors may have access to any of home appliance to arbitrarily control it or acquire information. This causes serious privacy and security problems, which should be solved to further smart home technology. This present paper proposed a dynamic user access control system for privacy protection in smart homes. The proposed system defines the role of a user of smart home services by automatically identifying the status information of the user and dynamically controls the access range for the service. In this way, the privacy of a user can be protected and the inter-smart device service is effectively provided. Consequently, the proposed dynamic user access control for smart home will improve the security service for protecting privacy in smart home devices.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.3 no.1
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• pp.84-95
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• 2009

The ubiquitous smart home is the home of the future, which exploits context information from both the human and the home environment, providing an automatic home service for the human. Human location and motion are the most important contexts in the ubiquitous smart home. In this paper, we present a real-time human tracker that predicts human location and motion for the ubiquitous smart home. The system uses four network cameras for real-time human tracking. This paper explains the architecture of the real-time human tracker, and proposes an algorithm for predicting human location and motion. To detect human location, three kinds of images are used: $IMAGE_1$ - empty room image, $IMAGE_2$ - image of furniture and home appliances, $IMAGE_3$ - image of $IMAGE_2$ and the human. The real-time human tracker decides which specific furniture or home appliance the human is associated with, via analysis of three images, and predicts human motion using a support vector machine (SVM). The performance experiment of the human's location, which uses three images, lasted an average of 0.037 seconds. The SVM feature of human motion recognition is decided from the pixel number by the array line of the moving object. We evaluated each motion 1,000 times. The average accuracy of all types of motion was 86.5%.

• Proceedings of the KIPE Conference
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• 2003.07a
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• pp.451-454
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• 2003

In this paper, the research trend and the sate-of-the-art of low cost motor drives are introduced with the recently increasing interest In various industrial applications, such as home appliance, hybrid electric vehicles, wind power systems, fuel cell systems, and etc. Based on this presented work, it is highly expected the power electronics technologies, which are accumulated through the last 20 years, can be effectively applied to actual application fields.

• Proceedings of the Korea Society of Design Studies Conference
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• 2000.11a
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• pp.122-123
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• 2000

제품이 디지털화 되면서 점차 제품의 사용범위 및 역할이 중대 되는 등의 사용자 환경변화가 급속하게 이루어지고 있다. 특히 가전기기에 있어서는 컴퓨터와 인터넷의 역할이 가전기기 내로 도입됨으로 인해, 단순히 제품 자체의 사용성을 넘어 편리함과 오락성을 가질 뿐만 아니라 정보를 공유하고 전달하는 등의, 가전제품의 네트워크화에 대한 새로운 가능성을 보여주고 있다.(중략)

• Proceedings of the Korea Society of Design Studies Conference
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• 2000.11a
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• pp.28-29
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• 2000

디지털(digital) 기술의 발전에 의해 주도되고 있는 정보 혁명이 과거 어느 때 보다도 강력하고 빠르게 인류 역사의 흐름을 변화시키고 있음은 부인할 수 없는 사실일 것이다. 디지털 환경은 제품의 기능 및 디자인의 기대 가치에 직간접적으로 영향을 미치며 디자인 대상인 제품의 의미, 사용자와의 관계 등에 관한 재해석을 요구하고 있다.(중략)

• Proceedings of the Korea Society of Design Studies Conference
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• 2000.11a
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• pp.6-7
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• 2000

정보혁명의 원동력인 디지털 기술(디지타이징, 멀티미디어, 네트워크, 데이터베이스)은 기술적인 측면을 넘어 사회 문화적으로 다양한 파급효과를 불러일으키고 있다. 정보, 컴퓨터, 커뮤니케이션 혁명으로 불리는 디지털 기술은 탈중심화, 세계화, 분권화, 정보공유의 가속화, 문화적 반작용 등, 정치, 경제, 사회, 문화의 여러 분야에 커다란 변화를 가져왔다. (중략)

• Proceedings of the KIPE Conference
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• 1999.07a
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• pp.167-170
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• 1999

In this paper, we operate Synchronous Reluctance Motor(SynRM) using the two-phase conduction method. Acually SynRM is operated by the sinusoidal PWM method but in home-appliance there is many restrictions of making the motor such as the method of winding, the shape of rotor etc. Therefore it is possible that there is little difference of performance between the two-phase conduction method and the sinusoidal PWM method. In this paper the characteristics of motor noise will be analyzed especially in the case of using the two-phase conduction method by experiment results.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.894-895
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• 2008

정보가전기기의 전력저감을 위한 기술개발로서 Home-net 기반 지능형 초절전 전원기술 개발을 목표로 하며, 관련 설계기술 및 내부블록을 설계하여 초절전 전원칩을 제작하고, 지능형 SMPS를 위한 digital control IC와 연결하여 동작 특성을 평가한다.