• Journal of Korean Society of Water and Wastewater
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• v.31 no.2
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• pp.141-148
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• 2017

The waterworks company is in charge of managing water facilities buried underground, and the management has been centered on manholes. However, since there is no standard management manual, it has been impossible to introduce and operate a systemized managing tool by water service providers and managers, and manhole management has been carried out by individual data recording personnel for each water service provider. When the management is carried out individually, the data to be shared by other waterworks managers tend to be privatized, and consequently, it may become a big obstacle to proceed with many civil works such as emergency leak repair, road excavation, replacement of old buildings. This report introduces RFID (Radio Frequency Identification) system which is based on the magnetic field capable of IOT. It also describes the necessity of leveraging the system for smart managing of pipe management record that has been done by hand writing. The RFID system includes RFID marker, data reader, portable computer operating program, and data base server operating program. In this system, the data is managed with a single communication device, and it would be possible to share the information on the underground facilities and water treatment facilities. This RFID technology is expected to provide water service providers with opportunities to develop more scientific and modernized underground facilities information systems.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.645-647
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• 2015

IoT (Internet of Things) technology has immense potential in our modern society. Generally when used in a consumer electronics environment, the IoT can continue to work more efficiently than the conventional method of home appliances. In order to use the IOT device's effectively in the environment, we need to determine the relationship between all device's based on their state and priority and compare it to find the suitable device based on the state and priority. In this paper I have done research on Wi-Fi devices in a network environment and I have observed relationships between them. Also I have proposed an algorithm to determine the device status and priority. This determines high-priority devices and they are identified on the basis of the state of the device associated with a particular operation and proceeds further.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.4
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• pp.99-105
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• 2023

In this paper, an intelligent CCTV was designed and experimentally developed by using an IOT device, Raspberry Pi, and artificial intelligence technology. Object Detection technology was used to detect the number of people on the CCTV screen, and Action Detection technology provided by OpenPose was used to detect emergency situations. The proposed system has a structure of CCTV, server and client. CCTV uses Raspberry Pi and USB camera, server uses Linux, and client uses iPhone. Communication between each subsystem was implemented using the MQTT protocol. The system developed as a prototype could transmit images at 2.7 frames per second and detect emergencies from images at 0.2 frames per second.

• Smart Media Journal
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• v.11 no.9
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• pp.56-63
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• 2022

Recently, the frequency and range of algae occurrence in major rivers and lakes are increasing due to the increase in water temperature due to climate change, the inflow of excessive nutrients, and changes in the river environment. Abnormal algae include green algae and red algae. Green algae is a phenomenon in which blue-green algae such as chlorophyll (Chl-a) in the water grow excessively and the color of the water changes to dark green. In this study, a 3D virtual world of digital twin was built to monitor and control water quality information measured in ecological rivers and lakes in the living environment in real time from a remote location, and a sensor measuring device for water quality information based on the Internet of Things (IOT) sensor. We propose to build a smart water environment service platform that can provide algae warning and water quality forecasting by predicting the causes and spread patterns of water pollution such as algae based on AI machine learning-based collected data analysis.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.272-274
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• 2021

Recently, due to COVID-19, the use of non-face-to-face authentication and fever detection systems is increasing. As the number of confirmed cases increases, the government is making it mandatory to authenticate and install a fever detector. It is used for entering and leaving not only general restaurants but also all stores. However, in most cases, the heat detector and the authentication device are separately configured and used, which is very inconvenient. Therefore, this study was conducted to develop an access control system that can simultaneously perform these functions. A smart access control system was developed by combining IOT technology as well as a fever detection function and smart personal recognition function. It is expected to further develop K-Quarantine by distributing it to public facilities and nursing facilities in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.530-532
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• 2015

Nowadays, it is animately studied on IoT(Internet of Things) on the strength of development of the short-range communications technology and smart device. In this paper, it made a interface board which is capable of short-range communications networks based on embedded linux and Android OS (operating system). and we also made a IoT sensor module and device driver module. This devices are easily separated and changed and also simply embodied in IoT, and It was implemented using the Android app that allows you to control the sensors.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.2
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• pp.337-344
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• 2017

The ICT industry is changing. From the PC to mobile devices, and from the mobile devices to wearable and IoT devices, it is changing. It requires the OS for the IoT, coming out various IoT OS have been developed in accordance with this need. In this paper, we discuss the kind of OS that supports IoT device, analyze the technology trends.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.1030-1032
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• 2015

In this paper, we developed a system that output and service using vairous contents with the inspection and management industry facilities in the operating system based on wireless network. This system can output to the display device at the same time, work management and a variety of content to the inspection facilities. And it outputs received contents of the advertising service provider in real-time. Therefore, this system support real-time facility management and various contents in the building at the same time.

• International Journal of Advanced Culture Technology
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• v.8 no.2
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• pp.289-296
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• 2020

Software copyright are written in text form of documents and stored as files, so it is easy to expose on an illegal copyright. The IOT framework configuration and service environment are also evaluated in software structure and revealed to replication environments. Illegal copyright can be easily created by intelligently modifying the program code in the framework system. This paper deals with similarity comparison to determine the suspicion of illegal copying. In general, original source code should be provided for similarity comparison on both. However, recently, the suspected developer have refused to provide the source code, and comparative evaluation are performed only with executable code. This study dealt with how to analyze the similarity with the execution code and the circuit configuration and interface state of the system without the original source code. In this paper, we propose a method of analyzing the data of the object without source code and verifying the similarity comparison result through evaluation examples.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.524-527
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• 2018

IOT의 발전으로 많은 디바이스들이 사용자들에게 제공되어 데이터를 얻거나 제어함으로서 유용하게 사용되고 있다. 보통 하나의 디바이스에 다수의 사용자가 접근하여 데이터를 얻거나 제어 함으로써 서비스를 받게 된다. 그러나 하나의 디바이스를 여러 사용자가 이용하게 되면 어떤 사용자에 의해 디바이스가 오작동을 할 수 있고 결함이 발생할 수가 있다. 본 논문에서는 이러한 경우를 예방하고 디바이스를 관리하기 위해 FUSE와 Syslog를 이용하여 디바이스 접근에 대한 정보 로그하는 기법을 제시한다. 이를 위하여 리눅스(Ubuntu 16.04)에서 문자 디바이스 드라이버 모듈을 작성하여 커널에 삽입하고, 디바이스에 접근을 시도하는 테스트 프로그램을 작성하여 디바이스에 접근할 때 접근 정보를 로그하는 기법을 제시한다.