• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.1
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• pp.89-94
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• 2022

With the recent acceleration of an aging society, the use of wheelchairs is increasing, and wheelchair accidents are also increasing. However, despite this situation, the domestic wheelchair market is lacking in deveolpment of additional functions to prevent wheechair collisions and falls. Therefore, this paper aims to design and implement intelligent smart wheelchairs equipped with functions such as stair wheels and automatic illumination sensor headlights that allow wheelchairs to automatically avoid obstacles, notify interlocking applications when falls are detected. Accordingly, it is expected to increase the convenience of wheelchair users and prevent frequent wheelchair accidents.

• Journal of the HCI Society of Korea
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• v.13 no.2
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• pp.31-44
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• 2018

In the IoT environment, various things could be connected. Those connected things learn and operate themselves, by acquiring data. As human being, they have self-learning and self-operating systems. In the field of IoT study, therefore, the key issue is to design communication system connecting both of the two different types of subjects, human being(user) and the things. With the advent of the IoT environment, much research has been done in the field of UI design. It can be seen that research has been conducted to take complex factors into account through keywords such as multi-modality and interusability. However, the existing UI design method has limitations in structuring or testing interaction between things and users of IoT environment. Therefore, this paper suggests a new UI prototyping method. In this paper, the major analysis and studies are as follows: (1) defined what is the behavior process of the things (2) analyzed the existing IoT product (3) built a new framework driving personality types (4) extracted three representative personality models (5) applied the three models to the smart home service and tested UI prototyping. It is meaningful with that this study can confirm user experience (UX) about IoT service in a more comprehensive way. Moreover, the concept of the personality of things will be utilized as a tool for establishing the identity of artificial intelligence (AI) services in the future.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.174-175
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• 2023

21세기가 도래함에 따라 새로운 도시의 형태인 스마트시티는 다양한 기기들이 네트워크 상에 서로 연결되어 이용자에게 편리함을 제공한다. 하지만 사이버 공격 기법 또한 고도화되고 있다. 많은 IoT 기기들이 상호작용함에 따라 사이버 공격을 당하면 도시 전체가 피해를 입을 수 있다. 이에 따라 본 논문에서는 스마트시티에서 일어날 수 있는 보안 사고에 대해 분석하고 이를 대응하기 위한 제로트러스트 도입 전략에 대해 연구하고자 한다.

• Journal of Digital Contents Society
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• v.15 no.3
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• pp.381-386
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• 2014

Multi-touch technology with the development of IT technology, various forms of recognition technology is positioned as the technology is one. A computer and a human action virtualization technology needed to design a natural interface while haneundedo influence. Human-computer interaction possible through intuitive to many users being able to reach without having to learn the sensory capabilities, will be useful if you could use. This paper presents the design of interfaces to the smart table environment to a conventional multi-touch touch-based, real so that you can use your finger to all the purposes. Growing day by day through the ubiquitous electronic blackboard, desk, furniture and electronics industry is actively being made by IT to incorporate multi-touch based interface because the design is expected to be important. Not far in the future, new ways of learning environment by combining modernization and smart table for meeting various IoT not only affect the environment looks anticipating.

• Smart Media Journal
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• v.7 no.2
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• pp.47-53
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• 2018

Along with the development of information and communication technology, smart education that can learn without restrictions of time, place and equipment is activated even in the field of education. Although smart education is provided with content-based training solutions, construction of a system that grasps individual characteristics of learners and provides personalized learning is relatively weak. The activity of free choice is an important play activity of early childhood education, but it is not implemented efficiently by relying on the clinical observation of the teacher. If the IoT(Internet of Things) technology based on Hyper-Connected is applied to free-choice activities, it is possible to provide the child's personalized activity type and play-form analysis based on objective and stylized data. In this paper, we design and implement a system to monitor the child's activity of free choice by building an IoT environment that is based on open source hardware. The proposed system provides children's activity information as objective data and will be used as teacher's work mitigation and custom training material for each child.

• Journal of the Korea Society of Computer and Information
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• v.28 no.4
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• pp.113-120
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• 2023

Smart farms are steadily increasing in research to minimize labor, energy, and quantity put into crops as IoT technology and artificial intelligence technology are combined. However, research on efficiently managing crop growth information in smart farms has been insufficient to date. In this paper, we propose a management technique that can efficiently monitor crop growth information by applying autonomous sensors to smart farms. The proposed technique focuses on collecting crop growth information through autonomous sensors and then recycling the growth information to crop cultivation. In particular, the proposed technique allocates crop growth information to one slot and then weights each crop to perform load balancing, minimizing interference between crop growth information. In addition, when processing crop growth information in four stages (sensing detection stage, sensing transmission stage, application processing stage, data management stage, etc.), the proposed technique computerizes important crop management points in real time, so an immediate warning system works outside of the management criteria. As a result of the performance evaluation, the accuracy of the autonomous sensor was improved by 22.9% on average compared to the existing technique, and the efficiency was improved by 16.4% on average compared to the existing technique.

• The Journal of the Korea institute of electronic communication sciences
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• v.19 no.1
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• pp.165-172
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• 2024

In this paper, we designed a smart home system that can be used intuitively and easily in everyday life, such as sending text messages to users, providing various information and scheduling using smart AI, and providing lighting and atmosphere suitable for the atmosphere in situations such as listening to music using neopixels, as well as using ESP32, RFID, and Google Cloude Console using raspberry pie. As a result of the experiment, it was confirmed that security characters were normally sent to users when RFID was recognized on ESP32 connected to Wi-Fi even if the power was reconnected, and smart AI using Neopixel lighting, Raspberry Pie, and voice recognition, which calculated frequency, also changed the recognition rate over distance, but it worked.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.814-815
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• 2016

IoT 환경 구축을 위한 스마트 디바이스는 점차 증가할 것으로 예상되며 이에 이기종 연동을 위한 저전력 경량화 프로토콜의 중요성이 높아지고 있다. 따라서 본 논문에서는 기존 표준 프로토콜에 대한 장 단점을 분석하여 향후 IoT 환경 구축에 적합한 표준 프로토콜의 발전 방안을 제시하였다.

• Information and Communications Magazine
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• v.34 no.3
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• pp.57-64
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• 2017

각종 사물에 네트워크 기능이 탑재되어 초연결 통신으로 연결되는 사물인터넷(IoT, Internet of Things) 기술이 급속히 확산됨에 따라, 최근에는 그 사물 자체가 지능화되어 지능형 스마트 사물로 진화하고 있다. 기기들이 자신을 구별할 수 있는 유일한 IP를 보유하면서 사물인터넷에 연결되어, 모든 기기가 해킹의 대상이 될 수 있어 보안적인 측면에서도 취약하게 되었다. 본고에서는 최근들어 급증하는 초연결 네트워크 환경과 사물인터넷에 대하여 알아보고, 초연결 환경에서 보안 위협에 대응하는 사물인터넷 보안 기술에 대한 연구와 표준화 동향, 그리고 사물인터넷 보안 위협에 대응하는 보안 기술의 방향을 알아본다.

• Information and Communications Magazine
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• v.34 no.3
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• pp.74-79
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• 2017

사물인터넷(Internet of Things, IoT) 기술의 발전에 따라 서비스 또한 다양해지고 있으며 실제 삶 속에 스며들어가고 있다. 이러한 사물인터넷 기술은 산업체에게 새로운 시장 창출의 기회를 제공하고 있고 사용자에게는 더욱 스마트한 삶을 영위할 수 있도록 해준다. 그러나 빠르게 증가하면서 연결되는 사물들에 보안 기술이 안전하게 적용되지 않을 경우 새로운 위협 요소가 된다. 본고에서는 미흡한 보안 설정으로 인해 야기되는 IoT 장치에 대한 보안 공격 동향과 이에 대응하기 위해 제안되는 안전한 초기 설정 방법들에 대해 알아본다.