• International Journal of Internet, Broadcasting and Communication
• /
• v.9 no.1
• /
• pp.42-49
• /
• 2017

Despite the government's various safety measures, the number of safety accidents continues to rise and the interior is more likely to occur indoors than outdoors. Safety accidents involving young children account for more than 70 % of the safety accidents in the safety accidents, and the ratio of safety accidents in the classroom or classroom is more than 50 %. In this thesis the author proposes the system managing the accidents notification service using LED lighting and access entry control. Utilizing IoT technology, remote control or access can be controlled remotely by controlling multiple lights and entrances from each room and by means of a number of lighting and entrances. By monitoring and analyzing real-time status via server PC and mobile interface, it can control the maximum control and incident prevention, automatic control, and automatic control.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.11a
• /
• pp.1246-1249
• /
• 2017

사물인터넷(IoT)은 인터넷을 통하여 사물들이 연결되고 이를 기반으로 다양한 서비스를 제공할 수 있는 미래 인터넷 기술로서 미래 초연결 사회를 가능케 하는 기술로 부각되고 있다. 따라서 본 논문에서는 IoT기술을 활용하였으며, 다양한 센서를 이용한 실내의 상황을 모니터링 할 수 있고, 위기 상황 발생 시 신속한 대응을 가능하도록 하며, 적합한 실내 환경을 자동 제어 및 원격 제어 함으로써 쾌적한 환경을 유지하여 건강 유지에 도움을 주기 위한 것이다. 이를 위해 앱 제작 및 오픈소스 하드웨어인 아두이노와 라즈베리파이를 사용하였으며, 라즈베리파이에서 Apache Web Server를 열어 MySQL을 통해 데이터를 저장 및 송 수신한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.05a
• /
• pp.570-572
• /
• 2016

Recent people start to attention about IoT(Internet of Things) and applying IoT on many fields is rising. In this paper we have implemented to control things via web so we used SimpleHTTPServer with Python. Client was used POST, one of web request method which passes through web server and developed a remote control system.

• International journal of advanced smart convergence
• /
• v.4 no.2
• /
• pp.120-123
• /
• 2015

The use of smart devices worldwide has been increasing day by day and its applications based on IoT have been also extended. But the power control system requires complicated control and processing information from the various sensors in practice. One of the best ways to save the power consumption is to manage electrical equipment individually on the Internet. In this paper, remote power control system for managing the power through the relay switch module via Python server was implemented by using Raspberry Pi. The proposed power control system can be used anywhere over the Internet.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2022.01a
• /
• pp.145-148
• /
• 2022

본 논문은 스마트 팜 교육용 시스템을 IoT 기반으로 임베디드 환경에서 설계 및 구현하였다. 시스템 환경은 라즈베리파이 기반에서 노드-레드(Node-RED) 프로그램을 적용하였고 생육재배에 필요한 환경 센서와 구동장치를 연동하여 구축하였다. 센싱 정보는 유. 무선통신으로 서버로 전달되며, 데이터베이스를 근간으로 한 웹 설계는 PHP, MySQL을 사용하고, 스마트 폰 앱은 안드로이드 스튜디오를 사용하였다. 시스템 동작 과정은 센서값 인지 및 비주얼한 표시, 연동 구동장치 제어 프로그래밍, 서버 및 스마트 폰을 이용한 원격제어와 모니터링 과정을 수행할 수 있도록 설계하였다.

• Journal of Korea Water Resources Association
• /
• v.53 no.7
• /
• pp.507-519
• /
• 2020

This study developed the radon measurement system that can be used for crustal movement monitoring and seismic occurrence and prediction, and compared and analyzed the results of test-operated radon measurement system and observed seismic occurrence cases. First, the developed radon measurement system consists of an NB-IoT radon measurement device, data center, data analysis, and data supply server. Because the measured radon data can be remotely trasmitted by using NB-IoT, this system is very suitable for installation and operation in unmaaned groundwater station. Second, the developed radon measurement device was test-operated at two groundwater stations in Gimpo from May to July 2019. The measured radon data was compared with the groundwater-level and electrical conductivity measurement data, and it was confirmed that the radon measurement device developed in this study has some potential for commercialization. Finally, from November 2019 to February 2020, three observed seismic cases and daily measured radon, groundwater-level, electrical conductivity data by the NB-IoT radon measurement device installed at three groundwater stations in Pohang, which is a test-bed, were compared and analyzed. As a result of the analysis, it was confirmed that the seismic occurrence correlated with radon, groundwater level, and electrical conductivity and all of these measured data will be able to provide basic data to help in seismic monitoring and prediction in the future.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.42 no.2
• /
• pp.523-535
• /
• 2017

Local intelligent services aim at controlling local services such as cooling or lightening services in a certain local area, using Internet-of-Things (IoT) sensor data in the area. As the IoT paradigm has evolved, local intelligent services have gained increasing attention. However, most of the local intelligent service mechanism proposed so far do not directly take the users' presence and service preference information into account for controlling local services. This study proposes an individual presence-and-preference-based local service system (IPP-LISS). We present a intelligent service control algorithm and implement a prototype system of IPP-LISS. Typically, the intelligence part of IPP-LISS including the prediction models, is generated on remote server in the cloud because of their compute-intense aspect. However, this can cause huge data traffic between IoT devices and servers in the cloud. The emerging mobile edge computing technology will be a promising solution of this challenge of IPP-LISS. In this paper, we implement IPP-LISS in the cloud, and then, based on the implementation result, we discuss applying the mobile edge computing technology to the IPP-LISS application.

• International Journal of Computer Science & Network Security
• /
• v.22 no.6
• /
• pp.57-62
• /
• 2022

The recent past has seen a tremendous amount of advancement in the field of Internet of Things (IoT), allowing the influx of a variety of devices into the market. IoT devices are present in almost every aspect of our daily lives. While this increase in usage has many advantages, it also comes with many problems, including and not limited to, the problem of security. There is a need for better measures to be put in place to ensure that the users' data is protected. In particular, fitness trackers used by a vast number of people, transmit important data regarding the health and location of the user. This data is transmitted from the fitness device to the phone and from the phone onto a cloud server. The transmission from device to phone is done over Bluetooth and the latest version of Bluetooth Light Energy (BLE) is fairly advanced in terms of security, it is susceptible to attacks such as Man-in-the-Middle attack and Denial of Service attack. Additionally, the data must be stored in an encrypted form on the cloud server; however, this proves to be a problem when the data must be decrypted to use for running computations. In order to ensure protection of data, measures such as end-to-end encryption may be used. Homomorphic encryption is a class of encryption schemes that allow computations on encrypted data. This paper explores the application of homomorphic encryption for fitness trackers.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.15 no.5
• /
• pp.913-922
• /
• 2020

In this paper, we propose a LoRa communication module using the LoRa RF module of Murata Electronics is designed to configure the IoT digital meter remote meter reading and a method of configuring a remote meter reading network by collecting multiple meter data in a DCU (Data Concentrate Unit) to configure a network with LoRaWAN. The developed system can be installed more easily and economically in the network configuration than the existing system by allowing the meter to be directly connected to the network or matched with a DCU to connect to the network according to the configuration of the consumer. The developed system was constructed using a digital water meter as an example, but it can also be applied to remote meter reading of the metered values of other meters such as electricity, water, gas, hot water and calorie meters. The main development contents are the design, configuration, and construction of digital meters, LoRa modules and DCUs, and how to connect the LoRaWAN network and transmit meter data to the server. By networking these devices, the system is configured, and the actual LoRaWAN communication is tested and the result is shown.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.18 no.5
• /
• pp.237-244
• /
• 2018

The Smart Factory level of manufacturing factories of SMEs now lacks a system for grasping the accurate inventory amount associated with inventory movements in managing warehouses at the basic level. Also, it is difficult to manage accurate materials for loss of data due to worker manual work and production method due to experience. In order to solve this problem, in this paper, automatic acquisition of inventory to minimize manual work to grasp workers' Inventory and improve automation is done. In the smart warehouse management system using the IoT-based autonomous mobile module, the autonomous mobile module acquires the data of the inventory storage while moving through the line. In order to grasp the material of the Inventory storage, The Camera module recognizes the name of the inventory storage. And Then, If output matches, the data measured by the sensor is transferred to the server. This data can be processed, saved in a database, and real-time inventory quantity and location can be grasped in a web-based monitoring environment for administrators. The Real-time Automatic Inventory (RAIC) systems is reduce manual tasks and expect the effects of automated inventory management systems.