• Title, Summary, Keyword: Protocol Converter

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Web-based Building Automation System using Embedded Linux (임베디드 리눅스를 이용한 웹 기반 빌딩자동화시스템)

  • 신은철;이수영;최병욱
    • Journal of Institute of Control, Robotics and Systems
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    • v.10 no.4
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    • pp.334-340
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    • 2004
  • In this paper, a Web-based management system for the building network is described. A multi-protocol converter based on SoC and embedded Linux is designed. The open source licensing, reliability, and broad hardware support are key reasons for use of embedded Linux in embedded industry. The multi-protocol converter integrates control network of RS-485 and LonWorks devices through TCP/IP protocol for a client with Java applet. The system consists of three-tier architecture, such as a client, a server that is performed on a multi-protocol converter, and control devices. The developed system includes the inverter motor control system with modbus protocol for the RS-485 network. The experiment results show that the multi-protocol converter using embedded Linux is a flexible and effective way to builda Web -based monitoring and control system.

Development of User Protocol Converter about Modbus and NMEA0183 (Modbus와 NMEA0183에 대한 사용자 프로토콜 컨버터 개발)

  • Eum, Sang-hee;Hong, Sung-ki
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.11
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    • pp.2584-2589
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    • 2015
  • In this paper, we want to able to reduce the time effectively about the analysis of protocol and development of protocol converter in industrial network. For this purpose, we developed the user protocol converter that can be to analysing the communication protocol in the industrial network. and also that is able to converting to user protocol and transmitting to another network. The developed user protocol converter was consist of S/W and H/W, and is supporting the Modbus, the NMEA0183 and the ethernet. The hardware main processor was used the AVR128, and placed the serial communication part and the ethernet part in converter board. The experiment results, we acquired very high transmission rate and conversion rate.

Performance Analysis of A Protocol Converter Between X. 25 and SDLC (X. 25와 SDLC간 Protocol Converter의 성능 분석에 관한 연구)

  • Chung, Hae;Un, Chong-Kwan
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.16 no.9
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    • pp.828-837
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    • 1991
  • 본 논문에서는 CCITT에서 채택된 X.2.5 network과 IBM이 채택한 System network architecture(SNA)의 synchronous data link control(SDLC)간의 protocol converter의 성능 분석을 한다. 여기서 protocol converter의 link level map-ping method를 사용하여 구현 되었다고 가정한다. 성능 분석을 통하여 각종 parameter에 대한 throughput과 mean waiting time을 구하며, 다양한 paramerter에 대하여 최적의 값을 조사한다. 특히 converter가 추정한 SDLC frame이 X.25. network packetizing과 규정한 최대 data packet size 보다 더 클 경우에 frame을 분할하게 되는데. 분할방식에 있어서 full and remainder packetzing과 equal packetizing 도입하여 서로간의 성능을 비교한다. message를 분할 할 때 조격으로 나누는 것이 frame의 오류를 줄일 수 있기 때문에 전자보다 후자가 성능면에서 우수함을 알 수 있다.

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A Study on the Protocol Conversion Method using Semantic Relation between Messages (메시지 의미관계를 이용한 프로토콜 변환 방법에 관한 연구)

  • 권운철;심영섭;이동호
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.19 no.6
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    • pp.1107-1114
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    • 1994
  • This paper presents a method of constructing the protocol converter where the semantic relation between messages is added to the protocol conversion method satisfying with conformity property. This method comes from a formal method with top-down approach and then derives efficient maximal converter to overcome protocol mismatch between computer networks implemented with different protocols. When a converter is made with this method, the most useless portions of the maximal converter are removed easily.

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A Development of User Protocol Converter with Modbus and NMEA0183 (Modbus와 NMEA0183간의 사용자 프로토콜 컨버터 개발)

  • Eum, Sang-hee;Hong, Sung-ki
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.90-92
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    • 2015
  • This study aim is to effectively reduce the time that was required for the analysis on an existing communication protocol with the industrial monitoring equipment. We analyzed the collected data with the Modbus protocol and NMEA0183, which is widely used in industrial monitoring. and User will be easy converting to data for use on each devices. The main board of the protocol converter was used AVR128, and RS232C and Ethernet was configured to enable communication.

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LON based Distributed Control System for HVAC (HVAC를 위한 론기반의 분산형 제어기)

  • Choi, Byoung-Wook;Sin, Eun-Cheol
    • 유체기계공업학회:학술대회논문집
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    • pp.535-540
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    • 2003
  • In this Paper, a LON based distributed control system for HVAC is described. We developed multi-protocol converter based on SoC, Neuron Chip, embedded Linux. It utilizes the network environment and therefore requires an appropriate operating system for handling protocols and an advanced development environment. The open source licensing, reliability, and broad hardware support are key reasons for use of embedded Linux in embedded industry. The multi-prootocol converter integrates LonWorks devices to a client with Java applet. The system consists of three-tier architecture, such as clients, multi-protocol converter, and LonWorks devices. The experiment result show that multi-protocol converter using embedded Linux is a flexible and effective way to build a Web-based monitoring and control system.

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Design of IPv4/IPv6 Converter with Security Prediction Capability (보안 예측기능이 있는 IPv4/IPv6 변환기 설계)

  • Jang Sung-Man;Kil Min-Wook;Lee Geuk
    • Journal of Digital Contents Society
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    • v.3 no.2
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    • pp.163-176
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    • 2002
  • It is necessary to change internet protect from version 4 (IPv4) to version 6 (IPv6). A converter from IPv4 to IPv6 is working in a laboratory not in practice. In this paper, we review internet protocol versions (IPv6) and design IPv4 to IPv6 converter. The IPv4 to IPv6 converter also has security prediction capability so as to deal with security problem when IPv4 packet is converted to IPv6 packet.

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Design and Implementation of Slotmachine Accounting Protocols (SAS-G2S) Converter (슬롯머신 회계 프로토콜 (SAS-G2S) 컨버터의 설계 및 구현)

  • Kim, Sangmin;Park, Hyunjoon;Ahn, Heejune
    • Journal of the Korea Industrial Information Systems Research
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    • v.20 no.6
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    • pp.11-20
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    • 2015
  • This paper describes design and implementation experience of SAS-G2S slotmachine accounting protocol middleware system that converts the legacy binary format SAS (Slot Accounting System) protocol with servers with recent standards G2S protocol. The paper examines the difference of two protocols such as link control, message format, and parameters. The converter architecture uses bridge and connector patterns and implemented in C++ and Python mixed language on Linux environment. The prototype system uses a 1GMHz-512MB linux machine and has passed Korean official protocol compatibility and performance test in 2015.

Design of Communication Protocol Conversion using EPN (EPN을 이용한 통신프로토콜 변환방식 설계)

  • 이상호
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.18 no.4
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    • pp.509-518
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    • 1993
  • Protocol conversion is to resolve the imcompatibility between networks so that users on different protocols can communicate with each other. This paper designs a formal model, EPN , to increase its modeling power and analyze conversion protocol and proposes a conversion algorithm using it. The conversion algorithm has two capabilities : synchronization and automatic error recovery function. Therefore burden of protocol converter design will be reduced, automatic protocol converter design can be possible and implementation for half-gateway will be easy.

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Development of Wireless Extended Profibus with Hard Real-time Requirement (엄격한 실시간 요구조건을 만족하는 무선 확장 Profibus의 개발)

  • Lee, K. C.;Kim, D. H.;Lee, S.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.586-589
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    • 2001
  • This paper focuses on a method to connect mobile devices such as mobile robot, Automated Guided Vehicle(AGV) to a fieldbus. In this paper, the IEEE 802.11 wireless LAN is used to extend a Profibus-DP network for the mobile devices. In order to integrate these two networks, a protocol converter is developed with two process(i.e., master process of Profibus-DP and virtual master process of IEEE 802.11) and an transmission buffer. Futhermore, a virtual polling algorithm is developed at the protocol conveter in order to satisfy real-time requirements on data communication.

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