• 대한임베디드공학회논문지
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• 제12권3호
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• pp.131-138
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• 2017

QR/NFC tags have been utilized in various fields like exhibition, museum, and so on, but they have a drawback that they are read-only fundamentally. We devise a novel device called a smart memory tag (below mem-tag) which is supplemented with the write function through combining a flash memory into a NFC tag. A mem-tag is composed of an NFC tag, an MCU, a flash memory, a bluetooth module, and a battery, and is inter-operating with smartphones via bluetooth communication. It can be used in a bulletin board to support writing replies and in a check-in service to verify the presence of the site. What matters is that users' inter-operations are borne to be asynchronous, which leads to the energy consumption to wait for users' actions. Sleep mechanisms and asynchronous MAC protocols used in ubiquotous sensor networks cannot avoid the consumption of battery. In this paper, we propose a touch and play scheme for minimizing the consumption of battery that the MCU wakes up and PLAY when a user TOUCH the mem-tag. We implemented the system to show that our scheme lets the mem-tag work 50 times longer than the sleep and wake-up scheme.

• 한국콘텐츠학회논문지
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• 제16권11호
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• pp.796-805
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• 2016

본 연구는 ICT융합 스포츠 콘텐츠 게임 기기제품 체험자를 대상으로 즐거움, 편리성, 유용성이 게임만족도 및 재사용의도에 미치는 영향력을 분석하는 것이 목적이다. 연구의 목적을 달성하기 위해 ICT융합 및 확장된 기술수용모형(TAM: Technology Acceptance Model)에 바탕을 두고 연구모형 및 가설을 설정하였다. 본 연구의 제안된 연구모형은 국립대구과학관을 방문하여 ICT융합 스포츠 게임기기를 체험한 271명을 대상으로 SmartPLS 2.0을 이용하여 구조방정식 모형으로 분석하였다. 분석결과, 첫째, 즐거움, 편리성, 유용성은 게임만족도에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 게임만족도는 재사용의도에 정(+)의 영향을 미치는 것으로 나타났다. 본 연구의 결과는 ICT융합 스포츠 게임기기 업체의 콘텐츠 개발에 도움을 줄 것으로 보인다.

• Smart Structures and Systems
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• 제15권4호
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• pp.931-947
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• 2015

This paper focuses on the design of an intelligent control system. The used techniques are based on Neuro Fuzzy approaches applied to a magnetorheological damper in order to reduce the vibrations over footbridges; it has been applied to the Science Museum Footbridge of Valladolid, particularly. A model of the footbridge and of the damper has been built using different simulation tools, and a successful comparison with the real footbridge and the real damper has been carried out. This simulated model has allowed the reproduction of the behaviour of the footbridge and damper when a pedestrian walks across the footbridge. Once it is determined that the simulation results are similar to real data, the control system is introduced into the model. In this sense, different strategies based on Neuro Fuzzy systems have been studied. In fact, an ANFIS (Artificial Neuro Fuzzy Inference System) method has also been used, in addition to an alternative Neuro Fuzzy approach. Several trials have been carried out, using both techniques, obtaining satisfactory results after using these techniques.