• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.593-595
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• 2016

In recent, the cafe culture has came very close friendly people. But many customers have been left the seat because the cafe has been heavily biased. To solve the problem, we propose the Cafe Seat Confirmation System based on IoT. Proposed system consists of Arduino, Raspberry Pi, and application. Using a smart device, it is possible to provide efficient services such as real-time seat reservations and cafes management.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.6
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• pp.71-76
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• 2020

Recently, the market of private study room continues to grow due to increased usage of private study room. However, old study room operators often have problems with cleanliness and theft, and cannot handle them in real time. Also, there is a problem of wasting power since users usually leave their desk for a long time with the lights on. Thus, in this paper, we intended to design a service which can prevent theft, clean up the user's desk, and adjust lighting system according to the user's condition based on Arduino system. Also, we tried to design a system which sends notifications from information of android-based IoT(Internet of Things), to the terminal when other people approach to the user's desk or try to steal user's item.

• International journal of advanced smart convergence
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• v.12 no.2
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• pp.153-158
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• 2023

Most agriculture plantings are based on traditional farming and demand a lot of human work processes. In order to improve the efficiency as well as the productivity of their farms, modern agricultural technology was proven to be better than traditional practices. Internet of Things (IoT) is usually related in modern agriculture which provides the farmer with a real-time monitoring condition of their farm from anywhere and anytime. Therefore, the application of IoT with a sensor to measure and monitors the humidity and the temperature in the mushroom farm that can overcome this problem. This paper proposes an IoT based monitoring system forindoor Ganoderma lucidum cultivation at a minimal cost in terms of hardware resources and practicality. The results show that the data of temperature and humidity are changing depending on the weather and the preliminary experimental results demonstrated that all parameters of the system were optimized and successful to achieve the objective. In addition, the analysis results show that the quality of Ganoderma lucidum produced on the research method conforms to regulations in Vietnam.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.243-246
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• 2020

스마트 홈 시스템은 앞으로도 계속 기술의 발전과 수요가 증가하는 블루오션 시장이다. IT 시장의 주목을 받는 아이템을 다룬 만큼 이 작품이 높은 발전 가치와 시장성을 보유하고 있다고 볼 수 있다. 스마트 홈 시스템 구축을 통해 개인에게 최적화 된 라이프 스타일을 구축하고, 더 나아가 개인에게 맞는 환경을 설정하여 맞춤 라이프 연계 서비스를 제공한다. 더 나아가 주목받는 이슈인 인공지능 기술을 사용하여 스마트 기기들에 대한 지능형 제어 및 효율적인 관리가 가능하도록 한다. 게이트웨이 서버에 에어컨, 공기청정기 등 우리 실생활과 밀접한 기기들에 연결함으로써 기존의 기기들에 비해 중요한 기기들을 더 높은 빈도로 관리할 수 있다. 이 프로젝트는 스마트 홈의 기본이 되는 통합 제어시스템과 이를 위한 IoT 허브 시스템의 하드웨어를 모두 개발한 프로젝트로써 게이트웨이 서버로 대표 되는 하드웨어를 통해 스마트 기기의 상태를 모니터링 하다가, 특정 센서값을 받으면 액션을 취해줌으로써 스마트기기를 제어할 수 있다. 그리고 이들과 관련하여 IoT 기반의 다양한 기기들을 표준화 제어하기 위한 제어 시스템을 구축하고 이를 위한 소프트웨어도 함께 개발했다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1192-1195
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• 2021

본 연구는 'AI를 활용한 스마트 홈 서비스' 개발에 관한 것이다. 기존의 다양한 정보를 수집하고 제어하는 홈 IoT서비스에서 본 논문은 더 나아가, AI 기술을 바탕으로 사용자가 자신에게 맞는 형태로 스마트 디바이스들을 제어하여 홈 (Home)을 편리하게 제어할 수 있게 함과 동시에 사용자의 관여없이도 AI를 활용해 자동으로 홈의 상황을 인지하고 동작할 수 있는 P2M + M2M 기술 기반 홈 IoT 서비스를 구현하고자 하였다. 특히 사용자의 동작을 인식해 IoT 기반 기기들을 통합적으로 제어할 수 있도록 모션인식, 영상인식 기술 등 사용자를 인식하고 주변 환경 상태를 실시간으로 측정해 최적의 제어 서비스를 제공하는 것을 목적으로 하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.17 no.9
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• pp.2377-2398
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• 2023

In our daily lives, we engage in a variety of tasks that rely on our senses, such as seeing. Blindness is the absence of the sense of vision. According to the World Health Organization, 2.2 billion people worldwide suffer from various forms of vision impairment. Unfortunately, blind people face a variety of indoor and outdoor challenges on a daily basis, limiting their mobility and preventing them from engaging in other activities. Blind people are very vulnerable to a variety of hazards, including falls. Various barriers, such as stairs, can cause a fall. The Internet of Things (IoT) is used to track falls and send a warning message to the blind caretakers. One of the gaps in the previous works is that they were unable to differentiate between falls true and false. Treating false falls as true falls results in many false alarms being sent to the blind caretakers and thus, they may reject the IoT system. As a means of bridging this chasm, this paper proposes an intelligent shoe that is able to precisely distinguish between false and true falls based on three sensors, namely, the load scale sensor, the light sensor, and the Flex sensor. The proposed IoT system is tested in an indoor environment for various scenarios of falls using four models of machine learning. The results from our system showed an accuracy of 0.96%. Compared to the state-of-the-art, our system is simpler and more accurate since it avoids sending false alarms to the blind caretakers.

• Journal of Institute of Convergence Technology
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• v.7 no.2
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• pp.21-23
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• 2017

Smart Factories could be regarded as a result of the integration of various key technologies of the fourth industrial revolutions. In smart factory, the IoT (Internet of things) is applied to capture the data generated by the production facility, store and analyze data generated in real time using Big Data technology. In addition, 3D printers are used to print expensive and complex parts, industrial robots supply materials and parts to the production site, store finished products in warehouses. In this paper, we introduced the definition of smart factory and change of job market. Also, we summarize several national policies to support enhancing transformation process of smart factory.

• The Journal of Economics, Marketing and Management
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• v.10 no.6
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• pp.17-26
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• 2022

Purpose: This study analyzes advanced cases of overseas smart cities and examines policy implications related to the creation of smart cities in Korea. Research design, data, and methodology: Analysis standards were established through the analysis of best practices. Analysis criteria include Technology, Privacy, Security, and Governance. Results: In terms of technology, U-City construction experience and communication infrastructure are strengths. Korea's ICT technology is inferior to major countries. On the other hand, mobile communication, IoT, Internet, and public data are at the highest level. The privacy section created six principles: legality, purpose limitation, transparency, safety, control, and accountability. Security issues enable urban crime, disaster and catastrophe prediction and security through the establishment of an integrated platform. Governance issues are handled by the Smart Special Committee, which serves as policy advisory to the central government for legal system, standardization, and external cooperation in the district. Conclusions: Private technology improvement and participation are necessary for privacy and urban security. Citizens should participate in smart city governance.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1043-1044
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• 2023

'MO:TIVE'는 AI 및 IoT를 활용하여 자기계발을 촉진하는 모바일 서비스로, 사용자 정보 학습과 정밀한 추천을 제공하며 생성형 AI를 활용한 개인화 조언을 제공한다. 이를 통해 사용자는 스마트 워치를 통해 자투리 시간을 효과적으로 활용하여 자기계발과 삶의 질을 향상을 기대할 수 있으며 지속적인 개선과 학습을 통해 더 나은 사용자 경험을 제공한다.

• International Journal of Computer Science & Network Security
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• v.21 no.1
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• pp.107-118
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• 2021

The term Internet of Things (IoTs) refers to the future where things are known daily through the Internet, whether in one way or another, as it is done by the method of collecting various information from various sensors to form a huge network through which people, things and machines are helped to make a link between them at all time and anywhere. The IoTs is everywhere around us such as connected appliances, smart homes security systems and wearable health monitors. However, the question is what if there is a malfunction or outside interference that affects the work of these IoTs based devises? This is the reason of the spread of security causes great concern with the widespread availability of the Internet and Internet devices that are subject to many attacks. Since there aren't many studies that combines requirements, mechanisms, and the attacks of the IoTs, this paper which explores recent published studies between 2017 and 2020 considering different security approaches of protection related to the authentication, integrity, availability and confidentiality Additionally, the paper addresses the different types of attacks in IoTs. We have also addressed the different approaches aim to prevention mechanisms according to several researchers' conclusions and recommendations.