• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 A
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• pp.251-254
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• 2003

In this paper have embodied a TCP/IP based small embedded web server and proposed the technical method for monitoring the real-time system states and remote controlling system using HTTP about manipulator joint angle. This also uses TCP/IP, which is the general protocol. and it is made of software, not of the TCP/IP stack with hardware chip. Then we attach the simulating results about the manipulator's input/output via web browser.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.140-143
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• 2000

This research presents new type of remote monitoring and control solution of PLC that can be used bi-directional and efficient management of factory automation through internet. This system has client/server architect for information handling between PLC and remote computer where a user can control and monitor target PLC. Actually the authors redirect RS232C connection between PLC and server computer into Internet connection between PLC and remote client computer using supplied PLC tool program So user feel like in front of PLC panel when he operates remote PLC through Internet. Each client/server program is constructed with Java language for security. In this paper the internet-based remote control system was proposed and proved validity by being applied to redirection of PLC control for factory automation.

• Journal of information and communication convergence engineering
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• 제7권4호
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• pp.459-464
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• 2009

This paper presents a production information monitoring system as an infrastructure of CIM system in footwear industry. The system is composed of hardware devices of terminal, communication converter, line controller and software for manufacturing processes. A terminal like a scanner is used for shop floor data input and a line controller is used to link between terminal and server. LAN and RS485 are used for connecting hardware components and deliver their information mutually. In the system, real time production information is acquired from information resources such as group of uppers and soles. The collected production information is delivered to a line controller and analyzed. Server receives information from line controller and machines for production management. Production planning information that is machined in the server is delivered to the shop floor and used for the production management of work in process, and used for improvement of productivity in a footwear production company. The implementation of the developed system shows the effectiveness of the system.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.674-677
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• 2000

This paper describes a remote monitoring and control system using mobile internet environments through TCP/IP. The server program acts as the main interface between the machine system and the internet technology. The client program is to be distributed to the remote users such as PDA who want to monitor the machine status. A server system is designed to send information of the faults and status of application system to the client part. Therefore, The client parts can take measures and control the system remotely according to the error and faults of system. We developed the client- serversystem for remote control of a green house environment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.166-168
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• 2007

This paper is dealing with how to control of a client robot's movement for instructions from a server PC and a wireless andremote control Robot that sends the server information of images for monitoring. To implement this. 802.11x WLAN with TCP/IP socket programming is used to get the driving instructions from the server PC and control movements of the robot such as a forward, backward and directions. As well as this, ARM9 cored PAX255 embedded processor and Linux OS is used for the function transmitting BMP format of 320 ${\times}$ 240 pixel for stopped image data.

• Journal of information and communication convergence engineering
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• 제3권2호
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• pp.90-92
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• 2005

As the result of the study shows, Round Robin Algorithm allows servers to ensure definite traffic distribution, unless incoming data loads differ much. Although error levels are high in some cases, they were eventually alleviated by repeated tests for a long period of time. The study uses two software packages (Packet Capture and Round Robin Test Package) to check packet volume from Virtual Network Structure (data generator, virtual server, Server 1, 2, 3), and finds out traffic distribution toward Server 1, 2, and 3. The functions of implemented Round Robin Load Balancing Monitoring System include round robin testing, system monitoring, and graphical indication of data transmission and packet volume.

• 전기전자학회논문지
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• 제5권2호
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• pp.174-181
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• 2001

본 논문에서는 인터넷 상에서 실시간 영상 감시를 위한 웹 카메라 시스템의 구조를 제안하고 구현하였다. 구현된 웹 카메라 시스템은 구현 방식에 따라 두 가지로 개발되었다. 첫 번째 시스템에서는 웹서버와 카메라 서버가 서로 동일한 시스템 상에서 구현되어 동작되도록 하였다. 이 시스템에서는 동영상 파일이 주기적으로 JPEG 파일로 압축되어 인터넷을 통하여 사용자에게 전달된다. 두 번째 시스템에서는 웹서버와 카메라 서버가 서로 다른 시스템에 구현되도록 하여 카메라 서버가 동영상 파일을 웹서버로 전송하면 최종적으로 웹서버에 접속한 사용자에게 동영상 파일을 전송하도록 하였다. JPEG으로 압축된 영상 이미지의 전송을 위하여 본 시스템은 자바 애플릿과 자바 스크립트를 사용하여 개발되었는데 이는 ActiveX나 스크립트 언어만을 사용한 경우보다 운영시스템과 브라우저에 독립적으로 동작할 수 있게 하기 위함이다. 본 논문에서 구현된 두 가지 구조의 시스템의 성능 비교를 위하여 각 시스템에 대하여 전송되는 데이터의 트래픽을 초당 바이트 단위로 측정하여 그 결과를 시뮬레이션 하였다.

• 한국멀티미디어학회논문지
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• 제2권4호
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• pp.430-437
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• 1999

본 논문에서는 클라이언트/서버 형태로 원격제어 모니터 모델로서 승용차 조립라인을 시뮬레이션 한 컨베이어 시스템을 채택하여 원격으로 제어하는 모니터 모델을 설계하고 구현하였다. 웹 애플릿을 기반으로 구현된 클라이언트 시스템은 상황실에 위치하여 컨베이어 현장을 영상 감시하고 직접적으로 제어를 담당하는 서버에게 컨베이어 제어 명령을 내린다. 제어명령은 서버 시스템으로 전달되며, 서버시스템에 존재하는 구동기가 실질적으로 컨베이어를 제어하게 된다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.223-223
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• 2000

Embedded system area has brought an innovation and has been spread rapidly by the growth of the Internet, wireless telephony and multimedia recently. Many embedded systems are required to be real-time systems in that it needs multi-tasking and priority based scheduling. This paper introduces a real-time system that was developed with web server ability for control and monitoring system employing a real-time operating system. It discusses the design model, structure, and applications of web server system. We used SNDS100 board which has a 32-bit RISC microcontroller of ARM7TDMI core as a hardware platform. MicroC/OS kernel was used as Real-time operating system that supports a preemptive and multitasking functions. We developed a hierarhchical control and monitoring system that not only reduced system and management costs, but also enhanced reusability and portability.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 추계학술대회
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• pp.188-192
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• 1997

The purpose of this study are changing wired medical instrument's terminal into wireless and implementing BSS of Wireless Local Area Network. the wireless terminal using frequency hopping spread spectrum in ISM band transfers patients medical information data such as ECG data, Patient Disease Indication Message to AP(or Server) and it also performs that as a response of transmission request in server. we made Clinet-Server network structure support only BSS service and patient's terminal controlled by polling in server. Wireless Terminal will guarantee mobility and give doctors real time monitoring capability in office.