• Journal of Digital Contents Society
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• 제15권2호
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• pp.219-225
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• 2014

Competition between corporations is getting more intense, so they need customer feedback in order to fulfill an effective management. Recently, SNS (Social Network Service) such as Twitter and Facebook has grown dramatically because of smart phones. Social media like Twitter and Facebook let customers to express their needs, and using big data such as data on SNS is a very effective method for getting customer's feedback. Collecting and analyzing social big data are operated by Buzz monitoring system. This research suggests how to utilize big data for getting customer's feedback on hotel CRM(Customer Relationship Management), which considers customer itself as asset of business. This paper demonstrates the research of buzz monitoring system that analyzes big data, and presents results of hotel customer reputation using buzz monitoring system. It would analyze the result from the hotel customer reputation, and research the implication in this paper.

• Journal of the Korea Society of Computer and Information
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• 제14권9호
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• pp.115-126
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• 2009

It is an important matter to manage data gathered from equipment in the manufacturing environment. However, systematic management about these data is sparsely deployed in the practical fields. This paper proposes a middleware monitoring system that efficiently supports acquisition of data from the equipment, efficiently compensates the lost data and flexibly maintains extensibility of the system. Through the result system of this paper, the data gathered from the equipment are easily stored into the database and the system status is able to be monitored in real-time. Furthermore, because the data are stored in the XML format, they are utilized in other systems in straightforward manner, which enhances the interoperability of the system. Especially, it enables ease interface to SAP, implements light-weight system by a simplified business logic and strengthen the extensibility and maintenance ability.

• Korean Journal of Remote Sensing
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• 제37권5_1호
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• pp.939-946
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• 2021

Monitoring of post wildfire provides important information for vegetation restoration. In particular, remote sensing data are known to provide useful information necessary for monitoring. However, there are insufficient research results which is monitoring the vegetation recovery using remote sensing data. This study is directed to monitoring post-wildfire vegetation restoration. It proposes a method for monitoring vegetation restoration using Sentinel-2 satellite data by compositing Tasseled Cap linear regression trend in a post wildfire study sites. Although it is a simple visualization technique using satellite images, it was able to confirm the possibility of effective monitoring.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• 제15권1호
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• pp.14-26
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• 2022

Recently, according to the severity of air pollution, interest in air pollution is increasing. The IoT based fine dust monitoring system proposed in this paper allows the measurement and monitoring of fine dust, volatile organic compounds, carbon dioxide, etc., which are the biggest causes affecting the human body among air environmental pollution. The proposed system consisted of a device that measures atmospheric environment information, a server system for storing and analyzing measured information, an integrated monitoring management system for administrators and smart phone applications for users to enable visualization analysis of atmospheric environment information in real time. In addition, the effectiveness of the proposed fine dust monitoring system based on the Internet of Things was verified by using the response speed of the system, the transmission speed of the sensor data, and the measurement error of the sensor. The fine dust monitoring system based on the Internet of Things proposed in this paper is expected to increase user convenience and efficiency of the system by visualizing the air pollution condition after measuring the air environment information with portable fine dust measuring device.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제20권11호
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• pp.224-231
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• 2019

Recently, the pollution of groundwater has become serious. In particular, the contamination of groundwater near livestock farms is becoming increasingly severe and it is difficult to drink with drinking water. In this paper, a groundwater purifier apparatus that can be installed in a community well was designed. The designed groundwater purifier apparatus enables a RO membrane filter and UV sterilization to remove pollutants, such as heavy metals, bacteria, and organic compounds. In addition, electrical conductivity, pressure, and flow sensors were added for remote monitoring. Remote monitoring of the system can determine the level of fouling and contamination of RO membrane filters through pressure and flow sensor data, and can record changes in the contamination and condition of groundwater through the electrical conductivity of the feed water. The designed groundwater purifier apparatus was installed at a farmhouse and remote monitoring. The result after 15 days of operating a groundwater purifier apparatus and analyzing the monitoring data revealed an average permeate water flow rate of 2.67L/min and an average water pressure of 7.09kgf/㎠, indicating that the RO Membrane filtered without fouling and clogging. The average electrical conductivity was 796.6 S/㎠ of the feed water and 55.6 S/㎠ of permeate water, which is similar to that of general tap water. Through this, it was confirmed that no pollutant occurred in the surroundings. Therefore, the designed groundwater purifier apparatus can confirm the replacement time of the RO membrane filter in advance through remote monitoring, and check the pollution state of the groundwater.

• Proceedings of the Korea Water Resources Association Conference
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• 한국수자원학회 2023년도 학술발표회
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• pp.20-20
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• 2023

최근 집중호우로 인한 도시침수가 빈번하게 발생하고 있다. 특히 2022년 서울의 강남지역과 경북의 포항 등 기습호우에 의한 침수로 인해 재산피해와 인명피해가 발생하였다. 본 연구는 이러한 집중호우로 인해 발생되는 도시침수에 대응하기 위하여 '저감이 아닌 예방'을 목적으로 도심지홍수 모니터링 시스템개발을 진행하고 있으며, 지자체와의 연계를 통한 실증실험을 진행하여 기술검증을 진행하고자하였다. 단일 센서로는 얻을 수 없는 종합적인 정보를 수집하기 위하여 멀티센싱을 이용한 시스템을 구상하였으며, 수위센서를 통한 침수심 데이터와 CCTV의 비정형 영상데이터 등을 종합적으로 취합하여 분석하고 사용자에게 안내 할 수 있도록 시스템을 구축하고자 하였다. 수집된 데이터는 연구원과 지자체로 전송되며, 연구원은 데이터수집을 통한 양질의 정보를 생산할 수 있다. 지자체는 수집된 데이터를 통해 실시간으로 침수지역 및 침수심 등을 확인 할 수 있으며, 홍수 이후 침수의 원인을 분석할 수 있는 데이터를 확보하여 추후 발생되는 홍수에 대한 대비가 가능할 것으로 기대된다. 본 연구에 대한 실증실험을 위하여 서울특별시와 인천광역시 미추홀구청과 업무협약을 진행하였으며, 도림천 인근과 인천광역시 미추홀구의 침수지역을 대상지역으로 선정하고 계측센서를 설치하여 실측 데이터를 확보하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 한국항해항만학회 2021년도 추계학술대회
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• pp.210-211
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• 2021

해상 물류 영역별 정보 및 데이터 분석에 따른 단위 서비스, 이벤트 데이터 연계분석, 해상 물류 통합 프로세스 모니터링, 테이터 처리 흐름분석 및 의사 결정 지원 데이터 및 운영 효율성 개선을 위한 클라우드 운영 기반 플랫폼 기술 설계를 목표로 한다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• 제20권4호
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• pp.43-48
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• 2006

Recently, many researchers have shown great interest in wind-photovoltaic hybrid generation system which promotes electric power supply safely and progress of energy usage efficiently with complementary cooperation of a wind generation system and photovoltaic generation system. To use this hybrid generation system stably and effectively, we established a system which can acquire, analyse and save data and monitored remotely using internet. We constructed the signal conditioning circuit and used many kinds of converters to measure physical quantities such as wind velocity, intensity of illumination and temperature as well as many kinds of voltage and current for AC and DC. we acquired data from computer with data acquisition board, developed server program and client program which can download data that is monitored and saved in realtime at remote place. We analysed the measured data in relation to many conditions such as time and weather conditions.

• Proceedings of the Korean Information Science Society Conference
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(A)
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• pp.233-235
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• 2012

해저보행로봇 CR200은 여러 개의 관절로 이루어진 6개의 다리를 이용하여 해저면에서 보행으로 이동하며 해저 정밀탐사 및 작업을 수행하는 로봇으로, 케이블로 연결된 선상제어실에서 원격 제어된다. CR200 시스템에서는 16개의 카메라가 장착될 예정이며, 취득된 카메라의 영상은 선상제어실의 비디오 컴퓨터로 전송되어 모니터링 및 녹화된다. 설계된 비디오 시스템에서 영상 전송은 전자기 간섭에 의한 화질 열화를 최소화하기 위하여 기가비트의 대역폭을 가진 이더넷과 광케이블을 통하여 디지털 형태로 전송되며, 아날로그 카메라의 영상은 비디오 인코더를 사용하여 디지털 영상으로 변환된 후에 전송된다. 본 논문에서는 CR200의 비디오 시스템의 설계를 소개하고, 실제로 제작하기 전에 설계된 비디오 시스템을 검증하기 위하여 테스트베드를 사용한 통합 테스트 결과를 제시한다. 아직 준비되지 않은 카메라에 대해서는 아이패드의 아날로그 영상 출력을 비디오 인코더의 입력으로 전달하여, 설계된 모든 카메라들이 동작하는 상황을 테스트베드로 실험하였다. 16개 카메라의 영상이 모니터링 및 녹화되는 상황을 테스트베드로 실험한 결과에 따르면, 압축률 10%의 H.264 동영상 압축 알고리즘을 사용할 경우에 30fps 영상의 모니터링 및 녹화에 각각 60Mbps의 전송량으로 비디오 시스템이 정상적으로 동작하는 것을 확인할 수 있었다. 비디오 데이터의 전송은 센서 및 제어 데이터의 전송과 같은 네트워크를 사용하지만, 비디오 데이터의 기가비트 네트워크 사용률은 평균 12%이기 때문에 비디오 데이터 전송으로 인하여 데이터 통신은 거의 영향을 받지 않는다.

• The Journal of Korean Institute of Communications and Information Sciences
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• 제39C권2호
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• pp.191-198
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• 2014

As an NMEA 2000 is a standard for communicate to other electronic equipment, it implemented a Universal gateway based on this ship's network. To implement a NMEA 2000 based Universal gateway, it is porting a NMEA 2000 stack source and CAN device driver source to board, and then it connected a board that equip with various communication protocol(CAN, RS232, USB, Ethernet port). To verify converted ship's data to a developed gateway, it connected pc based simulater program and monitoring program to a developed board. so we can see a ship's data through NEMA 2000 network. We verified a gateway performance and analyzed a generated ship's data from simulator program through a monitoring program that was connected a gateway and NMEA 2000 network. so it was designed, implemented to allow monitoring through utilizing a communication method that user wants.