Entity

Time filter

Source Type

Yanggu, South Korea

Lee H.,Energy IT Research Section | Choi M.,Energy IT Research Section | Park W.-K.,Energy IT Research Section | Lee I.,Energy IT Research Section | Lee S.H.,Chungbuk National University
International Conference on ICT Convergence | Year: 2014

This paper describes energy application services for energy management technology. To save energy, walking commute and using stairs are considered. Various sensors are used to measure the distance of walking and the saved energy is calculated using the measured data. Using the proposed mechanism, users can easily recognize the saved energy by energy saving action, and result in energy cost saving. © 2014 IEEE. Source


Lee H.,Energy IT Research Section | Park W.-K.,Energy IT Research Section | Lee I.-W.,Energy IT Research Section | Lee S.H.,Chungbuk National University
International Journal of Applied Engineering Research | Year: 2014

This paper describes energy saving and management mechanism based on profiles and rules. Monitoring of energy consumption is the basis to save and manage energy. Smart plugs are used to collect energy usage data for devices, and the devices are controlled by users or automatically based on the predefined rules through the energy management server. First, users define the profiles and rules for energy saving in the energy management server (EMS). And the smart plugs are installed for devices in the smart buildings, collect the data of energy consumption, and send them to the EMS. And, the EMS analyzes energy consumption data, finds the energy saving context, turns off the devices according to the predefined rules, and reports the results to the users. Also, the mobile devices provide the graphic user interface (GUI) to users for monitoring and controlling devices. Using the proposed scheme, devices can be efficiently controlled and managed to avoid energy leakage. © Research India Publications. Source


Lee H.,Energy IT Research Section | Park W.-K.,Energy IT Research Section | Huh J.,Energy IT Research Section | Lee I.,Chungbuk National University | Lee S.H.,Chungbuk National University
International Journal of Applied Engineering Research | Year: 2014

This paper proposes a device adaptive content streaming mechanism for multiple consumer devices in a smart home to provide bandwidth-efficient content distribution. For the purpose of enhancing the CPU performance of the transformation server, a converted content-sharing method is also suggested for devices with same capabilities. First, the proposed mechanism requires three profiles, one for devices, one for display programs, and one for services. They are used by a content transformation server to determine adequate sizes, bit rates, and frame rates of the original content so that it may be transmitted efficiently to devices according to their capabilities. Second, the content-conversion mechanism is improved through content sharing among devices with the same characteristics, which reduces the processing time required for redundant content transformation. As a result, the proposed mechanism provides more efficient conversions and transmissions of content, in that CPU utilization for content transformation and bandwidth usage for streaming are approximately 50% more efficient due to the elimination of redundant receptions and conversions of content for the same types of devices. This method can be adapted for use with real-time streaming services such as broadcasting and surveillance cameras and optimized for various types of consumer devices. © Research India Publications. Source

Discover hidden collaborations