• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권10호
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• pp.3554-3570
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• 2021

With the rapid development of the Chinese water project, the safety monitoring of dams is urgently needed. Many drawbacks exist in dams, such as high monitoring costs, a limited equipment service life, long-term monitoring difficulties. MEMS sensors have the advantages of low cost, high precision, easy installation, and simplicity, so they have broad application prospects in engineering measurements. This paper designs intelligent monitoring based on the collaborative measurement of dual MEMS sensors. The system first determines the endpoint coordinates of the sensor array by the coordinate transformation relationship in the monitoring system and then obtains the dam settlement according to the endpoint coordinates. Next, this paper proposes a dual-MEMS sensor collaborative measurement algorithm that builds a mathematical model of the dual-sensor measurement. The monitoring system realizes mutual compensation between sensor measurement data by calculating the motion constraint matrix between the two sensors. Compared with the single-sensor measurement, the dual-sensor measurement algorithm is more accurate and can improve the reliability of long-term monitoring data. Finally, the experimental results show that the dam subsidence monitoring system proposed in this paper fully meets the engineering monitoring accuracy needs, and the dual-sensor collaborative measurement system is more stable than the single-sensor monitoring system.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2001년도 추계종합학술대회
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• pp.53-56
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• 2001

최근 무선 인터넷의 이용이 급격히 증가하고 있을 뿐만 아니가 사용사의 요구도 텍스트 기반의 무선 인터넷 데이터 서비스에서 그릴, 사운드, 영상 등의 무선 멀티미디어 데이터 서비스로 변하고 있다. 이러한 흐름에 따라, 본 논문에서는 기존에 많이 사용되는 무선 인터넷 프로토콜인 WAP(Wireless Application Protocol) 기반의 무선 인터넷 환경에서 어디서든지 원격지의 영상 이미지를 모니터링 할 수 있는 시스템을 제안하였고, 이는 기존의 고가의 인터넷 카메라 시스템과는 달리, 인터넷에 직접 연결 가능한 비디오 모듈과 PC로 구축된 서버를 사용한 저가의 효율적인 모니터링 시스템이다. 본 논문에서는 이러한 WAP 기반의 원격 화상 모니터링 시스템에 대한 설계와 구현 방법에 대해 서술하였다.

• 한국정보전자통신기술학회논문지
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• 제15권1호
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• pp.14-26
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• 2022

최근 대기환경오염의 심각성이 커짐에 따라 대기오염에 대한 관심도가 높아지고 있다. 본 논문에서 제안한 사물 인터넷 기반 미세먼지 모니터링 시스템은 대기환경오염 중 인체에 영향을 미치는 가장 큰 원인인 미세먼지, 휘발성 유기화합물, 이산화탄소 등을 측정하고 모니터링 할 수 있도록 하였다. 미세먼지 모니터링 시스템은 대기환경정보를 측정할 수 있는 측정 장치, 측정된 정보를 저장 및 분석할 수 있는 서버 시스템, 대기환경정보를 실시간으로 시각화 분석이 가능하도록 관리자용 통합 모니터링 관리 시스템과 사용자용 스마트 폰 애플리케이션으로 구성하여 하였다. 또한, 시스템의 응답속도, 센서 데이터의 전송속도, 센서의 측정오차를 이용하여 제안한 사물인터넷 기반 미세먼지 모니터링 시스템의 효율성을 검증하고자 하였다. 사물인터넷 기반 미세먼지 모니터링 시스템은 대기환경정보를 휴대용 미세먼지 측정 장치로 측정한 후 대기오염상태를 시각화함으로써 사용자의 편리성과 시스템의 효율성을 증대시킬 수 있을 것이라 기대한다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.504-506
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• 1997

CCD camera is usually used for monitoring device. In most cases, he monitoring is performed from long distance. In this study, a camera system controlled through internet is developed. Using the system, not only we can get image information in real time but also we can control the orientation of the camera from long distance. Furthermore wireless communication is carried out between the camera and the server computer for verity of the application.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 1999년도 추계학술대회
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• pp.183-189
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• 1999

Nowadays advanced manufacturing companies are trying to find a way to check the performance of their production equipments and plants from remote sites. However, it is hard to monitor the status of machine or to check the performance of the processes because the regional limitation of distributed environment. This paper presents research results in the real time monitoring of machining processes and internet_based operation of machining centers via internet, which is implemented using VRML and JAVA.

• Smart Structures and Systems
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• 제5권2호
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• pp.193-207
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• 2009

A framework for structural health monitoring (SHM) systems is presented utilizing a recent 3.5 generation mobile telecommunication technology, HSDPA (High Speed Downlink Packet Access). It may be effectively applied to monitoring bridges, cut-slopes, and other facilities located in rural areas where the conventional Internet service is not readily available, since HSDPA is currently commercialized in 86 countries to make the Internet access possible in anywhere the mobile phone service is available. The proposed SHM framework is also incorporating remote desktop software to have remote control/operation of the SHM systems. The feasibility of the proposed framework has been demonstrated by field tests on a highway bridge in operation. One can expect that fast advances in the mobile telecommunication technology will further enhance the performance of the SHM network using the proposed framework for bridges and other facilities located in remote areas without the conventional wired Internet service.

• International journal of advanced smart convergence
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• 제12권2호
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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.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권10호
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• pp.4781-4803
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• 2017

Environmental monitoring systems using Wireless Sensor Networks (WSNs) face the challenge of high power consumption, due to the high levels of multi-hop data communication involved. In order to overcome the issue of fast energy depletion, a proof-of-concept implementation proves that adopting a clustering algorithm in environmental monitoring applications will significantly reduce the total power consumption for environment sensor nodes. In this paper, an energy-efficient WSN-based environmental monitoring system is proposed and implemented, using eight sensor nodes deployed over an area of $1km^2$, which took place in the city of Tabuk in Saudi Arabia. The effectiveness of the proposed environmental monitoring system has been demonstrated through adopting a number of real experimental studies.

• International Journal of Control, Automation, and Systems
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• 제2권2호
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• pp.207-219
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• 2004

This paper presents the development of a knowledge-based control system operating via the Internet. With the synergy provided by the Internet, the central expert controller with its knowledge-base has the potential to serve a multitude of front-end clients located anywhere in the world provided they have Internet access. In this way, the operational span of the knowledge-based control system can be expanded to virtually anyplace within the reach of the Internet. This configuration has positive implications in improving the efficiency of distributed operations, thereby enabling plantwide optimization and costs savings. Datasocket technology is adopted to facilitate a more efficient data exchange between the knowledge-based central server and the front-end clients. A specific application in the remote monitoring and fault diagnosis of machines using the proposed control configuration is presented in the paper.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권11호
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• pp.3970-3990
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• 2021

In view of the problems of insufficient data collection and processing capability of multi-source heterogeneous equipment, and low visibility of equipment status at the ship block construction site. A data collection method for ship block construction equipment based on wireless sensor network (WSN) technology and a data processing method based on edge computing were proposed. Based on the Browser/Server (B/S) architecture and the OneNET platform, an online monitoring system for ship block construction equipment was designed and developed, which realized the visual online monitoring and management of the ship block construction equipment status. Not only that, the feasibility and reliability of the monitoring system were verified by using the intelligent tire frame system as the application object. The research of this project can lay the foundation for the ship block construction equipment management and the ship block intelligent construction, and ultimately improve the quality and efficiency of ship block construction.