• Journal of the Institute of Convergence Signal Processing
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• v.21 no.3
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• pp.133-141
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• 2020

In this paper, the communication method of data information accepted by underwater drones and the implementation method to console display of data information were described, and the function of integrated monitoring system interface and the design and implementation of sonar interface were explained. The operation and posture of underwater drones can be controlled using a controller connected to the console, and the distance information between underwater drones and obstacles is obtained from sonar so that they can be visually displayed on the console screen along with camera images. The integrated monitoring navigation console is implemented to suit improvements, making it convenient and easy for workers to use. In addition, by upgrading integrated monitoring and control software functions, the company added user-specific project management functions and the output of reports for hull inspection to make them different and competitive from other underwater drones.

• Smart Media Journal
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• v.11 no.9
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• pp.64-74
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• 2022

A number of studies related to underwater robots are being conducted to utilize marine resources. However, unlike ordinary drones, underwater robots have a problem that it is not easy to locate because the medium is water, not air. The monitoring and positioning program of underwater robots, an existing study for identifying underwater locations, has difficulty in locating and monitoring in small spaces because it aims to be utilized in large spaces. Therefore, in this paper, we propose a three-dimensional positioning program for continuous monitoring and command delivery in small spaces. The proposed program consists of a multi-dimensional positioning monitoring function and a ability to control the path of travel through a three-dimensional screen so that the depth of the underwater robot can be identified. Through the performance evaluation, a robot underwater could be monitored and verified from various angles with a 3D screen, and an error within the assumed range was verified as the difference between the set path and the actual position is within 6.44 m on average.

• Convergence Security Journal
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• v.22 no.2
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• pp.3-8
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• 2022

Security threats occur from the outside, but more often from the inside. In particular, since the internal user knows about the information service, the security threat damage caused by the internal user is greater. In this environment, the actions of all users accessing information services should be monitored and recorded in real-time. However, the current operating system records only the logs of system and application execution, so there is a limit to monitoring user behavior in real-time. In such a security environment, damage may occur due to user's unauthorized actions. To solve this problem, this study proposes an architecture that monitors user behavior in real-time in a Linux environment. As a result of verifying the function to confirm the effectiveness of the proposed architecture, the console input values and output angles of all users who have access to the operating system are monitored in real-time and stored. Although the performance of the proposed architecture is somewhat slower than the identification and authentication functions provided by the operating system, it was confirmed that the performance was not at a level that users would recognize, and thus it was judged to be sufficiently effective. However, since this study focuses on monitoring the console behavior, it is impossible to monitor the behavior of user applications running in the background, so additional research is needed.

• 제어로봇시스템학회:학술대회논문집
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• 1992.10a
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• pp.364-369
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• 1992

본 논문에서는 연속 공정자동화를 위한 시스템 제어장치 중 공정의 제반운영 및 제어상태를 감시하기 위하여 공정상태를 나타내는 여러가지의 data를 그래픽 모니터상에 graphics로 표시해 주는 User Interface System인 Operator Terminal의 설계 및 구현을 다룬다. 이를 위하여 Operator Terminal은 출력장치로 VGA board와 color monitor, 입력장치로는 mouse와 function keyboard, 통신을 위한 RS232C serial port를 갖는 IBM-PC AT급의 mother board로 구성된다. 또한 program 저장은 상위 computer의 HDD를 이용한다. 그래픽 편집 및 모니터링을 위한 software는 한글 MS Windows 환경에서 구현한다.

• Proceedings of the KIEE Conference
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• 2002.07b
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• pp.1373-1375
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• 2002

태양광발전 시스템을 설치하여 동작상태의 데이터를 하고, 시스템을 분석하기 위한 목적의 데이터 취득 장치가 널리 이용되고 있다. 본 논문에서는 컴퓨터 기반의 데이터취득시스템(Computer-Based Data Acquisition System)의 개발에 대해 서술하고 있다. 제안된 시스템은 시스템이 설치될 곳의 환경요소(일사량, 온도 등) 및 전기적 출력 요소를 측정하기 위한 센서들로 구성하였으며, 측정된 데이터를 컨디셔닝 (Conditioning)과 변환 과정을 거친 후 데이터 취득카드를 통해 컴퓨터에 인터페이스(Interrace)시켰다. 태양광 발전 시스템의 동작상태를 실시간으로 모니터링하고, 취득된 데이터를 저장 및 분석하기 위한 목적으로 본 논문에서는 랩뷰-소프트웨어(Labview-Software)를 적용시킨 모니터링 시스템을 제안하였다. 제안된 모니터링 시스템은 그래픽화된 데이터-프로세싱 알고리즘을 사용하여, 상대적으로 짧은 기간 내에 시스템을 구현할 수 있고 시스템의 측정요소가 설치초기에 예상한 것보다 많아지거나 시스템이 용량이 증대되는 경우에도 그 적용성이 용이한 장점이 있다. 제안된 본데이터 취득 시스템을 독립형 태양광 설비에 적용하여 동작상태를 실시간으로 관찰하였고 동작특성을 분석 및 평가하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.3
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• pp.585-590
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• 2012

In this paper, a system using vibrating wire sensor and zigbee wireless network has been implemented to monitor and manage the structure. The implemented strain controller drives vibrating wire sensor and computes strain from measuring frequency of the output signal. Temperature sensor is included to compensate strain by temperature. Using two axis acceleration sensor of strain controller can measure the direction of strain or deformation. To measure strain more effectively, wired and wireless communication function is included in this device. As results of experiments, it is shown that the developed system can be effectively applied to measure strain of the structure.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.370-371
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• 2013

현재 운영 중인 DGPS RSIM은 다중 GPS/GNSS 수신기를 이용하여 의사거리 기반 보정정보와 그 무결성 기능을 제공하고 있다. 기준국 시스템 기반 무결성 기능 강화를 위하여, 본 논문에서는 기준국 수신기를 기반으로 전파간섭을 검출할 수 있는 간이 기법과 모니터링 시스템에 대해 다룬다. 기준국 시스템에 전파간섭의 영향을 받게 되었을 경우, 전파간섭 검출을 위한 신규 시스템을 추가하지 않고, 기준 운영 시스템, 즉 기준국 수신기의 실시간 원시정보 출력과 RSIM 메시지의 세부 파라미터 정보를 이용하여 전파간섭을 검출할 수 있는 기법 제안과 그 기법을 적용한 전파간섭 모니터링 시스템을 설계하고, 시뮬레이션 결과를 제시한다. 먼저 DGPS 기준국 시스템의 구성과 기능에 대해 설명하고, 무결성 기능의 한계를 제시한다. 또한 전파간섭이 발생했을 경우 기준국 수신기에 미치는 영향에 대해 분석하고, 분석 결과를 기반으로 기준국에 적용할 만한 간이 전파간섭 검출 기법과 이를 기반으로 한 시스템을 설계하여 그 활용 가능성을 제시한다. 성능평가 결과 제안한 기법 및 시스템이 국제해사기구(IMO)에서 요구하는 무결성 성능 중의 하나인 TTA(Time to Alarm) 10초 이내의 성능을 만족할 수 있음을 제시한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.938-940
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• 2013

According to the increasing concern for the safety management of nuclear power plants, the growing need for the development of a monitoring system for the management. Smart revolution sparked the evolution of wireless networks and the spread of smart phones, smart pads and mobile-centric, as well as the change of life, injury, industrial growth, and the Internet economy. In this paper, a fusion of the latest smart technology to meet the traditional nuclear industry in the era of the smart revolution, radiation safety management system is proposed to Content Basic imaging and dose output data in real time, and provides basic monitoring functions required to manage the radiation safety.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.2
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• pp.363-365
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• 2015

Recently, Smart Phone is widely used and replaces with the work of computer system. So, to overcome the inconveniences of Smart-Phone small screen size, a mirroring the screen of Smart Phone to TV or Computer monitor is studied to show a larger screen to the users. In this study, we implemented a screen mirroring and efficient user interface(computer mouse and keyboard) system with Bluetooth and USB host functions for a smart phone using standard 5 pin(MHL compatible) connector output to HDMI Monitor. Dock-style and Monitor embedded system are designed respectively.

• KIEAE Journal
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• v.15 no.1
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• pp.89-95
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• 2015

The centralized power supply system and rainwater treatment system, which are major infrastructure in modern cities, are showing their limitations in accommodating environment load due to climate changes that has aggravated recently. As a result, complex issues such as shortage of reserve power and urban flooding have emerged. As a single solution, decentralized systems such as a model integrating photovoltaic system and rooftop greening system are suggested. When these two systems are integrated and applied together, the synergy effect is expected as the rooftop greening has an effect of preventing urban flooding by controlling peak outflow and also reduces ambient temperature and thus the surface temperature of solar cells is lowered and power generation efficiency is improved. This study aims to compare and analyze the monitoring results of four algorithms that define correlations between micro-climate variables around rooftop greening and the surface temperature of solar cells and generate their significance. By doing so, this study seeks to present an effective algorithm that can estimate the surface temperature of solar cell that has direct impact on the efficiency of photovoltaic power generation by observing climate variables.