• The KIPS Transactions:PartD
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• v.13D no.3 s.106
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• pp.445-454
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• 2006

Almost of industrial measuring instruments usually are equipped only with serial communication devices. In order to connect these instruments to internet, we implement an embedded translator. This device has the hardware components composed of one WAN port, two LAN ports, and two UARTs, and functions as a communication translator between serial and internet communication. it also provides web-based monitoring function that is absent from existing serial-to-ethernet converter. The hardware is implemented using the KS8695 network processor which s an ARM922T as processor core. We have installed the boa web server and utilized the CGI function for internet-based remote control, added the IP sharing function which allows the network with private IP addresses to access the internet, and developed a serial-to-ethernet translation program. Finally, we show an application example of the developed translator that remotely monitors the solar energy production system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.467-469
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• 2018

Tactical wireless communications often suffer from communication problems such as channel interference and communication disconnection due to the variability of the network topology and poor communication environment. Therefore, it is very important to overcome the problem of communication failure of the wireless communication network caused by the poor tactical environment and to improve the survivability. This paper describes the automatic control methodology of wireless communication equipment to identify and distinguish the situation of communication failure without user intervention and to implement more effective solution.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.3
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• pp.57-62
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• 2022

Recently, the tracking radar continues research to develop a new operation algorithm that can acquire and track a target in various environments. In general, modeling similar to the real target and environment is used to develop a new operation algorithm, but there is a limit to modeling the real environment. In this paper, a RAW data storage device was developed to efficiently develop a new operation algorithm required for the tracking radar using millimeter wave to acquire and track the target. The RAW data storage equipment is designed so that the signal processing device of the tracking radar using millimeter wave can save the RAW data output from 8 channels to OOOMSPS. RAW data storage equipment consists of data acquisition equipment and data storage equipment. The data acquisition equipment was implemented using a commercial Xilinx KCU 105 Evaluation KIT capable of high-speed data communication interface, and the data storage equipment was implemented by applying a computer compatible with the commercial Xilinx KCU 105 Evaluation KIT. In this paper, the performance of the implemented RAW data storage equipment was verified through repeated interlocking tests with the signal processing device of the millimeter wave tracking radar.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.951-954
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• 2007

요즈음 대부분의 임베디드 장비에는 소프트웨어가 탑재된다. 소프트웨어의 특성상 버그 수정이나 기능 개선 등을 위한 업데이트가 가능하며, 최근에는 이러한 시스템/펌웨어 업데이트가 매우 일반적이다. 그러나, 기존의 업데이트 방법은 사용자가 직접 업데이트 자료를 다운받고, 장비 간 케이블의 직접 연결을 해야 하는 등 번거롭고 어려운 과정을 거친다. 본 논문에서는 최근 들어 매우 광범위하게 사용되는 블루투스 무선통신 기술을 이용하여 임베디드 및 모바일 장비의 업데이트를 자동적으로 수행하는 기법을 제안한다. 제안한 기법은 블루투스를 이용하므로 장비 간 케이블 연결 작업 등의 부가 작업들이 불필요하다. 또한, 사용자가 직접 업데이트 파일을 다운받아 업데이트 관리 프로그램을 이용해 업데이트를 수행하는 작업을 없애고, 대신 장비 스스로 업데이트를 감지하고 다운로드하여 자동적으로 업데이트를 수행하도록 한다. 따라서, 업데이트 과정에서 사용자의 개입을 최소화하여 사용자 편의성을 증가시키며, 임베디드 장비의 시스템 SW를 항상 최신의 상태로 유지할 수 있도록 한다.

• Proceedings of the Korea Contents Association Conference
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• 2019.05a
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• pp.417-418
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• 2019

4차 산업혁명 시대의 도래로, 제조업 기반의 기업들은 단순히 제품을 가공 또는 조립하여 제품을 판매하는 과거의 공정 행태를 지식화하여 부가가치를 높이는 지능형 생산 체계를 도모하고 있다. 제품을 생산하는데 있어서 현대의 제조기업들은 대부분 관련 장비 또는 설비들에 대한 의존도가 높다. 본 논문에서는 이와 같은 제조 장비를 생산하고 사후관리까지 하는 일련의 데이터들을 수집하고 분석하여 장비의 고장예측부터 신규장비의 기획까지 활용할 수 있는 장비 이력관리 시스템을 제안한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.7B
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• pp.557-566
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• 2008

Some types of network nodes such as mobile network node, mobile access point, and ad-hoc network node can be relocated frequently and, by the nature of its usage, are deployed over broad area. In this environment, the network topology is changed constantly since even the manager node as well as the managed nodes can leave or join the management network frequently. The many of existing network management technologies are mostly for small sized and homogeneous networks with static topologies and not proper for the mobile network devices. In this paper, employing peer-to-peer (P2P), the secure group communication techniques, and simple network management protocol (SNMP), we propose a highly secure and available management technique that can be used to manage the mobile network nodes through insecure management network such as the Internet. The proposed technique is implemented to show that it is practically usable.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.6
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• pp.23-30
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• 2012

In this paper, we suggested the integration between automatic enforcement system and UTIS(Urban Traffic Information System) base station. UTIS base station and automatic enforcement system are different in the height of installation and the type of communication network. UTIS base station is 25 meter high and communicate with center system by optical network. Whereas automatic enforcement system is 6.6 meter high and communicate with center system by rental network. For the purpose of suggesting the efficient method of integration, research was as in the following. We found that the number of integrated system was 1,628 through the present state of analysis and UTIS equipment was satisfied with the required specifications through field testing. Also we suggested the appropriate configuration of the integrated system and analyzed that the cost of the integrated system installment is 1/5 lower than that of the legacy system installment.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.72-73
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• 2021

As discussions of the International Maritime Organization for the introduction of the Marine Autonomous Surface Ship (MASS) began in earnest, discussions were conducted to prioritize cybersecurity (Cyber Risk Management) when developing a system to support MASS operation at the 27th ENAV Committee Working Group (WG2). Korea launched a technology development project for autonomous ships in 2020, and has been promoting detailed tasks for cybersecurity technology development since 2021. MASS operation in a digital maritime communication system environment requires network security of various digital equipment that was not considered in the existing maritime communication environment. This study introduces the basic concept of network security equipment to support MASS operation in the detailed task of cybersecurity technology development, and defines the network security equipment interface for MASS ship application in the basic stage.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.11
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• pp.2191-2198
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• 2017

The PME(precision measurement equipment) used in the measurement to check the performance of the equipment in military weapon system is periodically calibrated to maintain measurement reliability during the life cycle. Previous studies suggest that reliability models are determined by considering sample size and characteristics of equipment. However, it may not be fit well to apply a single model assuming the same characteristic distribution for the maintenance date of many kinds of PMEs. This paper proposes that the most suitable calibration interval for maintenance data is selected through the F-test and the performance index evaluation among the calibration intervals estimated from the measurement reliability models assuming the characteristic of the bath-tub curve during the life cycle of various PMEs. The research results show that the reliabilities of various types of equipment are maintained during calibration intervals.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.6B
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• pp.630-640
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• 2009

The thesis suggests hand-held equipment to overhaul for mobile TFT LCD/OLED module of high-performance. The established module equipment to overhaul could distinguish outputting video data to module for distinguishing flicker, but it is impossible with low system. In this thesis, supporting system could check the various supplement functions from bringing equipment to overhaul without changing design of FPGA or H/W the module various size for equipment to overhaul for module of high-performance coincidently. The system includes hand-held equipment to overhaul, test software embedded and software a base personal computer and have designed to output, save, and certify all contents of module test of hand-held equipment to overhaul to interface universal serial bus. Setting up 9 items that represent for efficient verification of the proposed system have been possible confirmation with TFT LCD/OLED module of high-performance, establishment scan time, creation gamma, changing register, supporting interface, and multi inch modules.