• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.931-932
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• 2008

• Journal of the Korea Society of Computer and Information
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• v.13 no.5
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• pp.1-10
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• 2008

In this paper, we discuss the development of an integrated HMI system based on OPC(OLE for Process Control) to control and monitor an automation equipment in the diverse environment. We implement an embedded OPC server according to the OPC standard which is proposed as the communication standard mechanism in the process control field, and design the interface module in which the output data of the OPC server can be connected to various HMI environment such as the local application, intranet client and Web page. This paper will be contributed in the HMI system implementation for the ubiquitous environment because it is possible to make remote control on the network and Web monitoring as well as the connection and data exchange of heterogeneous equipments by applying to various control systems.

• Journal of IKEEE
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• v.23 no.3
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• pp.1096-1099
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• 2019

In this paper, we propose the protocol for construction of smart factory. The proposed protocol for construction of smart factory consists of an OPC UA Server/Client, a technology of TSN realtime communication, a NTP & PTP time synchronization protocol, a FieldBus protocol and conversion module, a technology of saving data for data transmit latency and synchronization protocol. OPC UA server/client is a system integration protocol which makes interface industrial hardware device and supports standardization which allows in all around area and also in not independent from any platform. A technology of TSN realtime communication provides an high sensitive time management and control technology in a way of sharing specific time between devices in the field of high speed network. NTP & PTP time synchronization protocol supports IEEE1588 standardization. A fieldbus protocol and conversion module provide an extendable connectivity by converting industrial protocol to OPC. A technology of saving data for data transmit latency and synchronization protocol provide a resolution function for a loss and latency of data. Results from testing agencies to assess the performance of proposed protocol for construction of smart factory, response time was 0.1367ms, synchronization time was 0.404ms, quantity of concurrent access was 100ea, quantity of interacting protocol was 5ea, data saving and synchronization was 1,000 nodes. It produced the same result as the world's highest level.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.317-317
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• 2004

수치 제어(Computer Numerical Control, UC) 시스템 기술은 기계장치 산업 및 제조 산업 전반에 걸쳐 큰 영향을 미치게 되는 국가적인 핵심 기반 기술이다. 지금까지 공작기계의 제어를 위한 CNC 시스템은 FANUC, Siemens 등으로 대표되는 소수 대형 기업체의 제품들이 시장을 독식하는 구조이며, 국내의 경우에도 대부분의 UC 시스템을 국외 제품에 의존하는 실정이다.(중략)

• Journal of Internet of Things and Convergence
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• v.8 no.3
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• pp.63-68
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• 2022

Due to COVID-19, many paradigm shifts in existing manufacturing facilities and the expansion of non-face-to-face services are accelerating worldwide. A representative technology is digital twin technology. Such digital twin technology, which existed only conceptually in the past, has recently become feasible with the construction of a 5G-based network. Accordingly, this paper designed and implemented a part of the USB process to enable digital twins based on OPC UA communication, which is a standard interlocking structure, between real object objects and virtual reality-based USB process in accordance with this paradigm change. By reflecting the physical characteristics of real objects together, it is possible to simulate real-time synchronization of these with real objects. In the future, this can be applied to various industrial fields, and it is expected that it will be possible to reduce costs for decision-making and prevent dangerous accidents.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.326-328
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• 2006

IEC61850에 따르는 디지털 변전소 사업이 한창이다. 그러나 IEC61850을 적용한 변전소가 나오게 되면 기존 SCADA 시스템에서 사용하던 HMI를 지속적으로 사용하기에는 무리가 따른다. 그래서 IEC61850기반으로 통신모듈, 데이터베이스, 사용자 인터페이스 관점에서 HMI의 개선이 필요하다. 본 논문에서는 IEC61850기반의 변전소 자동화 시스템에서 변전소 내부의 장비 (IED)들을 관리하고 감시하는 Station Level의 HMI와 IED의 위치에서 IED의 상태와 제어 및 상단에 연결되어 다른 IED의 상태를 감시하는 Bay IED HMI의 구성 방법을 제안한다. 각각의 필요한 통신 프로토콜과 모듈, 컴퓨터 프로세스 통신을 사용하기 위한 OPC(OLE for Process Control), 외부에서도 관리, 감시, 제어가 가능하게 하기 위한 Web Service기능을 구현하였다.