• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.6
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• pp.2781-2798
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• 2019

Thanks to internet, as one of indispensable parts of our lives, many devices that we use in our daily lives like TV, air conditioner, refrigerator, washing machine, can be monitored and controlled remotely by becoming more intelligent via Internet of Things (IoT) technology. Smart Home applications as one of the elements of smart cities, are individually the most demanded application without question. In this study, Smart Energy Management (SEM) system, based on NodeMCU and Android, has been designed for SEM, which is a part of the smart home application. With this system, household energy consumption can be monitored in real time, as well as having the ability to record the data comprising of operation times and energy consumption information for each device. Additionally, it is ensured to meet the energy needs on a maximized level possible, during the hours when the energy costs are lower owing to the SEM system. The Android interface provides the users with the opportunity to monitor and change their electricity consumption habits in order to optimize the energy efficiency, along with the opportunity to draw up of a daily and weekly schedule.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.7
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• pp.1533-1540
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• 2012

u-Life care device collect body bio formation, and classify and store them in exercise patterns. Afterwards, the devices send the data through bluetooth wireless communication to the smart phones which set Google Android operation system at regular intervals. The information is checked out through application. u-Life care device calculates calories spent a day after monitoring activity quantity with 3-axis acceleration sensor. The device judges the status of health through body data mining and consults tailored exercise treatment. When sending body data, the device sends them in smart phone through Blue Tooth wireless communication at once. So, as a strong point, the device doesn't need mobile gateway or home gateway used for sending to web server information sensed from exercise life care products.

• Journal of the Korea Society of Computer and Information
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• v.23 no.9
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• pp.113-122
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• 2018

In this paper, IoT(Internet of things) technology, which is the core of the 4th industrial revolution, was applied to the study of reduction of consumption current. The IoT is a sensor that collects data, a sensor communication, a gateway that processes and stores the collected data. Data application of IoT technology is applied to smart home, smart city, healthcare, smart factory, etc. and it needs to be applied to various industrial fields. By sensing the location of the sensor device, the specific functions of the gateway and the platform are turned ON and OFF to reduce the consumption current of the equipment during the OFF period. When the sensor device accesses the gateway, the specific function of the gateway is turned ON and When the device is separated from the gateway, it senses the sensitivity of the wireless signal and automatically turns off the certain functions. As a resurt, it has reduced the consumption of current. In this paper, we propose a novel system for detecting the location of sensor devices by applying IoT technology. The system implementation is realized by software based, and defines the requirements for the implementation of the sensor device gateway. The gateway automatically detects the location, movement of the device and performs necessary functions. Finally verifies the automatic detection performance of the gateway according to the location of the device. It will contribute greatly to the development of the smart city and office.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2501-2503
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• 2003

본 논문에서는 embedded Linux 환경에서 device driver와 application의 개발에 목적을 두었고, 그 대상 시스템으로 선정한 Home Automation System의 각각의 플랜트에 대한 하드웨어 설명과 제어용 프로그램을 다룬다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.12
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• pp.1563-1570
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• 2018

Internet of Things technology is rapidly becoming a reality in many parts of our lives through various product services, and product development especially in the field of smart home is being actively carried out. Most controllers for controlling various smart home products use smart phone applications. However, smart phone applications are not suitable as smart home controllers, contrary to smart home services that emphasize intelligence and convenience. In order to provide intelligent smart home service, intuitive form of smart home controller is needed, which enables integrated control of smart home device. Therefore, this paper proposes a smart home remote control that can control the Internet devices and services of objects. The proposed smart home remote control provides an environment where users can build a smart home service through the IFTTT(If This Then That) automated service platform.

• Journal of the Speleological Society of Korea
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• no.77
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• pp.59-65
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• 2007

Nowaday, our life is closely related to temperature and the humidity. To control the temperature and the humidity have pursued the comfort environment. We develop that form ware is controled temperature and humidity that used the ATmega128. We embody home-automation system to use the ATmega128, temperature sensor, LCD, relay device and peltier device.

• Journal of Korea Multimedia Society
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• v.8 no.11
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• pp.1531-1542
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• 2005

In multimedia service of Ubiquitous Home Environment(UHE), the requirements such as intelligent service that is executed automatically without direct order of user and fitted service compatible for each user and comfortable of user, interoperability of multimedia contents between incompatible devices will increase. Multimedia protection and management, authentication and authority administration methods that are suitable for above demands are also required. In this paper, we suggest authentication method suited for UHE and propose user oriented multimedia service(UHMS: Ubiquitous Home Multimedia Service) that provides the interoperability of multimedia between incompatible devices, conducts intelligently the context information (preference information, device information etc.) using sensor module and home server, provides and secure services.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.5
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• pp.1111-1116
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• 2005

The necessity of the home network have been enlarged gradually according to the distribution of ultra-high speed internet, the expansion of a digital information equipment and the change of a life pattern. In this paper, we proposed the embedded ethernet module that could be operate on eight bit system, but it could control home appliance with full ethernet speed. The embedded ethernet module consists of 8051 MCU and Hardware TCP/IP. In this module, we construct simple web server and port remote control program for I/O device control. We verified through internet that the developed embedded ethernet module could control and check home appliances anywhere and anytime. We expect the developed ethernet module can build up niche market at home network. And it will be helpful to activate home network market.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.334-336
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• 2006

최근 들어 인터넷, 인트라넷을 통해 양질의 동영상 데이터를 네트워크 상으로 실시간 또는 사용자의 요구에 따라 전승해 주는 스트리밍 서비스에 대한 요구가 증가하고 있다. 아울러, 유비쿼터스 환경의 도래와 함께 센싱을 통한 다양한 멀티미디어 서비스의 확장이 이루어지고 있으며, 유/무선 환경에서 사용자의 콘텐트에 대한 요구를 끊김 없이/연속 이동을 통해 볼 수 있는 사용자 맞춤형 서비스가 필요로 되고 있다. 이에 본 논문에서는 센서기기를 연동해서 사용자를 인식하고 양질의 동영상을 사용자의 요구 시점에 이동성을 보장하면서 사용자의 다양한 단말 조건을 인식하여 멀티미디어 서비스를 제공하는 내용을 담고 있다.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.419-425
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• 2012

In these days, the trends of home networking system is implementation of easily configured system with home security of emergency alarm and visitor verification services. In this paper, we implemented push server system based on Arduino of open source physical computation platform to verify visitors for the homes without home networking services. In the suggested system, visitor verification is performed in and out of home, and home access security of the system could be constructed with low-cost price by use of windows push server system and smart devices with alarm operation in corresponding to not allowed access trying.