• Proceedings of the KIPE Conference
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• 2003.07b
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• pp.949-952
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• 2003

인터넷으로 표현되는 디지털 세상은 빠른 속도로 변하는 삶 전체에 영향을 미치는데, 특히 산업체에서의 업무와 일하는 방식을 바꾼다. 인터넷과 웹 접속 기술은 현재의 업무 과정을 개선하고, 전통적인 제조 기업의 생산성과 관리 효율을 극대화한다 본 논문에서는 이러한 발전 설비의 안정성과 원거리 모니터링의 신뢰성과 PV시스템의 제어에 관한 것이다 그리고 PV시스템의 센서 모니터링 데이터와 간접적인 제어를 설계하였다. 전통적인 모니터링 시스템은 특수한 하드웨어나 소프트웨어에 의존한다 모니터링 시스템의 기본적인 목표는 사용자가 휴대용 단말기를 통해 모니터링과 제어를 할 수 있게 하는 것이다. Labview GUI를 이용하여 설계한 모니터링 시스템은 윈도우 2000을 운영체제로 한 IBM PC를 사용하였고, TCP/IP 프로토콜에 기본을 두었다. 이러한 모니터링 시스템의 이점은 사원의 지출(급여)를 줄이고 지구 어느 곳에서든 발전 시스템을 인공위성을 통하여 모티터링과 제어를 할 수 있다.

• Journal of the Korean Geotechnical Society
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• v.29 no.5
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• pp.53-64
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• 2013

Resistivity monitoring is based on the fact that a change in the porosity leads to the changes in water content and fine particles, which alter the electrical resistivity. At every embankment dam, internal erosion always occurs as time passes. The internal erosion generally develops into piping over a long time by backward erosion and concentrated leak, and finally leads to dam failure. Resistivity is known to be very sensitive to the changes in porosity in embankment dams. Thus resistivity monitoring is a reasonable method to find out the leakage zone. However, resistivity is strongly influenced by seasonal variation of temperature, TDS of reservoir water and water level. In this paper. we first installed electrodes permanently at the center of the crest. The electrical resistivity monitoring data was acquired every 6 hours from Apr. 3, 2011 to July. 31, 2012. To analyze the characteristics of monitoring data, each resistivity data was calculated from up to 2,950 data sets. The result indicated a seasonal resistivity variation due to related temperature. Finally, a quantitative method to estimate porosities of the embankment dam from the resistivity monitoring data was analyzed. The applicability and reliability were verified and the importance of electrical resistivity monitoring for obtaining reliable result was emphasized.

• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.315-318
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• 2010

USN(Ubiquitous Sensor Network)기술이 다양한 분야에 적용하고 응용함으로서 센서 네트워크에서 발생하는 스트림 데이터를 효율적으로 처리하는 기술이 활발하게 연구되고 있다. 그리고 센서들에서 발생한 이기종 센서 스트림 데이터는 미들웨어의 메타데이터를 이용하여 센서 모니터링 환경의 상위 응용시스템에서 사용하기 적합한 센서 데이터로의 변환이 필요하다. 기존에 개발된 센서 데이터 처리 시스템에서는 동일한 노드나 지역에서 발생하는 센서 스트림 데이터에 대해서도 미들웨어에서의 불필요한 검색과 연산을 수행하기 때문에 본 논문에서는 캐쉬 테이블방식을 이용하여 중복적인 센서 스트림 데이터 처리의 수행을 줄일 수 있는 센서 스트림 데이터 처리 시스템의 설계를 제안한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.9
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• pp.1915-1922
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• 2012

In this paper, the Solar Inverter will be monitored by using the AJAX(Asynchronous JavaScript and XML). AJAX is the one of the technologies that can make the RIA(Rich Internet Application) with DHTML(Dynamic Hyper Text Makeup Language) and other java script technology. By using this, a strong application program that is comparable to the general application program can be made. With an existing data-processing technique, the request and response of data can't be processed dynamically on the same page. However, real-time monitoring of data and operation statuses can be confirmed by using the AJAX an asynchronous method of communication. Also without changing the page, the amount of data transmission used the AJAX with significantly small amounts of data to build a Solar Inverter monitoring system that is able to efficiently handle management and monitoring, operating all functions within one page.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.3
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• pp.159-166
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• 2018

This paper introduces a manufacturing facility visualization system for the monitoring of smart factories. With the development of technology and the emergence of such terms as the Fourth Industrial Revolution and Industry 4.0, technologies for smart factories are becoming more important. A Manufacturing Execution System that can improve productivity and help decision making by monitoring production plants in real-time is one of the key technologies for smart factories. The application of digital twin technology for more accurate monitoring technology is also an important issue. However, digital twin implementations require an integrated infrastructure that can integrate facility data from multiple manufacturers. Therefore, this paper designs and develops a visualization program that can verify real-time information of facilities using data collection system based on international standard protocol for heterogeneous collection and monitoring of facility data. This allows a factory to consolidate equipment data from multiple manufacturers and to view them in real-time.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.6
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• pp.217-224
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• 2015

In this paper, I describe a system for remote monitoring of devices Android-based sensor data recorded during the operation of the ballast water treatment system. The proposed remote monitoring system is Designed and implemented when a problem occurs in the ballast water treatment system installed in the vessel, provide information if you are unable to determine the cause in the field or engineer dispatch request of external. System developed is composed of a server holding the sensor data information collected from the vessel and a mobile device that is not bound to time and place. The transmission of sensor data between mobile devices and server, and is implemented by TCP/IP to transmit information securely. System is composed of request to the server from the mobile device after the user inputs the input values, to transmit the sensor data. The device provides the information of the sensor with a high level of importance to the user. Through the remote monitoring sensor information of the ballast water treatment system, the system is made to predict the failure of the sensor.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.823-826
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• 2007

In the construction project, the efforts to use IT for efficient management and improvement of productivity is gradually increasing. For instance, the cite management model with 3D CAD and RFID shows one of efforts this model define and systematize a variety of data occurred each work unit(design, material and process management information, etc). However, so far, there has been the problem monitoring the site due to the an inaccurate data and low-practice which people should input in manual. In this paper, we would like to establish the data for real time monitoring system with data inputting automatically from RTPM system and the site, and analyze the relationship between tables consist of similar data through RED Diagram.

• Journal of the Geological Society of Korea
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• v.54 no.5
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• pp.501-511
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• 2018

Geoparks are worth preserving in an environmentally and heritage. Monitoring and public attention are essential for the conservation and protection of geoparks. The use of Unmanned Aerial Vehicles and the Structure from Motion algorithm enables effective monitoring of geoparks that are difficult to manage due to their wide range of manpower, and various spatial data derived from SfM can be utilized to improve awareness of geoparks that have been lacking. In order to prove this, firstly, we created the 3D spatial data by using the UAV and the SfM algorithm, which is one of the National geoparks of the Hantan-Imjin River area. Using this 3D data for Virtual Reality and 3D printing. After that, we verified the possibility of promoting the geopark through a simple online survey. Finally, we propose a method to utilize all the generated data from each step to promote and research for geoparks.

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.4
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• pp.483-488
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• 2015

This paper implements a long-term monitoring system (LMS) for ship's engine performance analysis (SEPA) based on the web, for the purpose of the communication speed and engine maintenance. This system is composed of a simulator, monitoring module with a multi channel A/D converter, monitoring computer, network attached storage (NAS), RS485 serial and wireless internet communication system. The existing products monitor the information transmitted from pressure sensors installed in the upper parts of each of engines in the local or web computer, but have a delay in the communication speed and errors in long-term monitoring due to the large volume of sampling pressure data. To improve these problems, the monitoring computer saves the sampling pressure data received from the pressure sensors in NAS, monitors the long-term sampling data generated by the sectional down sampling method on a local computer, and transmits them to the web for long-term monitoring. Because this method has one tenth of the original sampling data, it will use memory with small capacity, save communication cost, monitor the long-term sampling data for 30 days, and as a result, make a great contribution to engine maintenance.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.443-444
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• 2022

전통적인 선박 모니터링 방식은 단순 정보 조회나 매뉴얼에 의한 수동적인 모니터링이었다면, 자율운항 선박에서는 주요 기기의 모니터링 개념이 데이터 기반의 예측 모델링 적용이 필수적이다. 선박의 주요 기기 5종에 대한 CBM(Condition Based Monitoring) 정보와 PMS(Planed Maintenance System) 정보를 통합 GUI(Dashboard) 형태로 선육간 구성하여, 선박-육상간 최적의 상태 모니터링과 신제적인 예방 정비 활동이 가능하도록 서비스를 제공한다.