• Title/Summary/Keyword: Real-time Operating System

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Comparison of properties at Fossil Power Plant by On-Line Real Time Performance Monitoring System (On-Line 실시간 성능감시 시스템을 이용한 화력발전소 운전 Parameter 값 비교분석)

  • Jung, Hoon;Park, Doo-Yong
    • Proceedings of the KSME Conference
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    • 2007.05b
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    • pp.3501-3505
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    • 2007
  • As the power plant industry has been changed into competition structure, power generation companies do more with less by increasing capacity and lowering operation costs. In order to achieve this goals, an on-line real-time performance monitoring system has been needed to introduced to fossil power plant. The system represents a suite of related software modules which consist of on-line data, and on-line performance modules. This system can help the plant staff get the most out of their facilities by continuously monitoring deviations in equipment performance and the impact on those deviations on plant power, heat rate and operating cost. This paper shows the comparison of design value with acceptance test and current(measured) value.

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Real-time Virtual Integration of heterogeneous system and Union Query System

  • Min, Seong-Hyeon;Lee, Sang-Joon;Kwak, Ho-Young
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.10
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    • pp.107-114
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    • 2016
  • In this paper, we propose the building method for the unified IoT service platform between the variety of legacy systems with the heterogeneous structures and the operating environments. To accommodate the structural diversity of legacy systems, we develop a virtual integrated structure and interface abstracting method. By this, the new platform can use the data sources of the legacy systems as if the data source is in the new platform. In a manner without modification of the legacy systems with performing minimum tasks, we proposes a model that can be integrated without affecting the availabilities of the legacy systems.

Performance Evaluation of an Embedded EtherCAT Master with SOEM on PREEMPT_RT Linux (PREEMPT_RT Linux에서 SOEM을 이용하는 임베디드 EtherCAT 마스터 성능 평가)

  • Kang, Sung Jin;Kim, Oe Cheol
    • Journal of the Semiconductor & Display Technology
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    • v.21 no.3
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    • pp.26-32
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    • 2022
  • EtherCAT is an Ethernet-based fieldbus system standardized in IEC 61158 and SEMI, and widely used in the fields of factory automation, semiconductor equipment and robotics. In this paper, an EtherCAT master is implemented on an embedded board with Arm based 64-bit quad-core processor and its jitter performance is evaluated at the output of the network interface to include all the effects of the entire system in the results. For the EtherCAT master system, an open source EtherCAT master stack, Simple Open EtherCAT Master (SOEM), is installed on PREEMPT_RT patched Linux operating system for real-time operation. The results show that the jitter performance is comparable to that of Xenomai-based master and the EtherCAT master with two master instances has similar jitter performance to the EtherCAT master with one master instance.

Methods for Improving Portability of RTiK to Real-time Performance on Linux-based Systems (리눅스 기반 실시간 성능 제공 RTiK의 이식성 향상을 위한 방법)

  • Lee, Sang-Gil;Lee, Jeong-Guk;Lee, Cheol-Hoon
    • The Journal of the Korea Contents Association
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    • v.20 no.8
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    • pp.54-64
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    • 2020
  • RTiK-Linux is a method to provide real-time performance to Linux, it is controlled by directly accessing hardware registers to implement time tick interrupts. It implemented on x86 Intel and ARM based Exynoss 5422, but it had a disadvantage that it could not be ported to both fragmented other platform environments. In this paper, We change structure of time tick interrupt for improve po rtability so that it can operate on other platforms. We apply high-resolution timers that are independent of hardware, and modify operating structure to task and event to satisfy time determinism. It was confirmed that the improved RTiK-Linux works well in x86 and various ARM AP environments.

Application and Development Strategies of a Secure Real-Time Operating System in Weapon Systems within the Defense Sector (국방분야 보안 RTOS의 무기체계 적용 및 발전 방안)

  • Sang-Seung Lee;Keun-Ha Choi;Seung-Hyeon Hwang;Hyun-Ji Kim;Kyung-Deok Seo;Hwa-Eun Seong
    • The Journal of the Convergence on Culture Technology
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    • v.10 no.5
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    • pp.189-193
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    • 2024
  • As cyber threats increase in the defense sector, the security of weapon system software is becoming increasingly important. Currently, most of the embedded software installed in domestic weapon systems operates based on foreign real-time operating systems(RTOS) that have no security. As a result, the localization and security enhancement of embedded software for weapon systems have emerged as urgent tasks. This study aims to propose the application and development strategies of secure RTOS for weapon systems. To this end, we examined the technological trends of domestic and foreign RTOS and secure RTOS, and analyzed the problems of current embedded software in weapon systems. The results revealed major issues such as low localization, vulnerability to cyber attacks, difficulty in maintenance, increased costs, and loss of opportunities for accumulating technological capabilities. An investigation of the current status of embedded software applied to existing weapon systems found that embedded SW are in operation across all fields, including maneuver, firepower, protection, command and control, communication, naval vessels, and aircraft. Among them, 99% rely on foreign RTOS such as VxWorks. A review of the core functions and applicability of secure RTOS to weapon systems suggests that it can be applied to key areas requiring real-time performance and security, such as fire control, navigation devices, and flight control in existing and future weapon systems. However, ensuring performance and reliability, securing verification and compatibility, and systematic government support were raised as prerequisites.

Design and Implementation of A Cyber-school System Based on Web Groupware (웹 그룹웨어 기반의 가상학교 시스템의 설계 및 구현)

  • 고일석;나윤지
    • The Journal of Information Technology and Database
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    • v.8 no.1
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    • pp.13-24
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    • 2001
  • This paper presents a design and implementation of cyber-school system using object modeling technique and web groupware. The system design method based on object modeling techniques reduce cyber-school construction effort and cost with reusing of modules. The system is a kind of web group application based on WWW that allow members who located on remote computer to do cooperative learning and to communicate with other students and teachers independent of time and location. In this system we use Linux operating system for efficient development on real education field. and we can reduce cyber-school development effort arid cost With this system.

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Design and Implementation of Intelligent Manufacturing Operating System Using ObjecTime (ObjecTime을 이용한 지능형 제조 운영 시스템의 설계 및 구현)

  • 김기정;홍성수
    • Proceedings of the Korean Information Science Society Conference
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    • 1999.10c
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    • pp.164-166
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    • 1999
  • 본 연구에서는 객체지향적 CASE 툴인 ObjecTime을 이용하여 지능형 제조 운영 시스템을 설계/구현하였다. 객체지향적 프로그래밍 방법론과 ROOM(Real-time Object-Oriented Modeling) 방법론을 사용하여 지능형 제조 운영 시스템에서 필요한 객체를 설계하였으며, 이들 객체의 계층도와 관계를 정의하였다. 객체지향적 설계 방법론을 사용하여 설계한 시스템은 모델링 과정에서 실행화일을 얻는 과정까지 발생하는 오류를 최소화할 수 있다는 장점이 있다. 또한, 본 연구에서는 제조 시스템의 모니터링과 제조시스템 운영 소프트웨어의 자료 입력 및 수정을 위한 그래픽 사용자 인터페이스 툴을 제작하였다.

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실시간 운영체제

  • Lee, Du-Won
    • Digital Contents
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    • no.11 s.78
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    • pp.56-60
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    • 1999
  • 시장조사기관인 IDC는 2002년께 웹폰이나 디지털TV, 셋탑박스, 디지털 비디오 같은 임베디드 시스템이 PC시장을 앞설 것으로 내다보고있다. 이에 따라 이 시장을 둘러싼 업체들의 경쟁이 치열하게 펼쳐지고 있는데 이러한 임베디드 시스템에 필연적으로 사용되다시피하는 것이 바로 실시간 운영체제(RTOS:Real-Time Operating System)이다. 실시간 운영체계가 가지는 특징, 응용분야, 그리고 인터넷 상에서 실시간 운영체계의 정보를 얻을수 있는 방법에 대해 간략하게 소개하고자 한다.

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