• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.24 no.1
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• pp.7-11
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• 1988

This Paper describes technique for the design of system for telemetering the water temperature at sea. This telemetering device adopts FM-FM system, and its main carrier wave is 146.2MHz. The transmission power is about 1W, and the available distance of transmission is 2km. The telemetering time for the transmission and pause is controlled automatically by the CMOS programmable timer. The water temperature is measured by the electronic thermometer, it is varied by V-F converter which is built to a linear voltage controlled oscillator. The results of the experiment at the place where the receiver is off 2km from the transmitter, the water temperature measured with the mercury thermometer well agree with that of the telemetering device.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2005.11a
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• pp.298-301
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• 2005

모바일 기술이 발달함에 따라 모바일 기술을 이용한 다양한 컨텐츠 개발이 중요한 문제로 떠오르고 있다. 기존의 텔레매틱스 서비스는 차량 밖에 사용자가 있을 경우 안내원을 통하여 원격진단 차량 문 열림, 도난차량 추적, 내차위치확인이 있다. 본 논문에서는 WIPI를 이용하여 자동차 원격제어 시스템을 구현하였다. 자동차 원격제어 시스템은 자동차 키를 대신해야 하는 상황이나 차량의 상태 등을 자신의 모바일을 사용하여 차량을 원격제어 하는 시스템이다. 또한 차량의 손상 및 파손 여부를 SMS를 이용하여 차주에게 바로 알려주는 서비스가 가능하다. 8인의 피 실험자가 각각 12번씩 모두 96번을 실험한 결과 응답시간이 2초 이내로 나타났고 100%의 동작 성공률을 보였다. 각 이동통신사들이 모바일 플랫폼으로 많은 로얄티를 지급하던 방식에서 벗어나서 대한민국이 주도한 WIPI 플랫폼이 모바일 시장을 개척해 나간다는 점에서 WIPI 플랫폼을 기본으로 이용한 서비스는 더욱 더 발전할 것이다. 앞으로 WIPI는 모바일 산업에 주축이 될 것이며 많은 수익 창출이 예상된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.7-9
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• 2012

본 논문에서는 안드로이드 폰을 이용하여 쿼드콥터의 모터 속도를 원격으로 제어하기 위한 사용자 인터페이스 기법을 제시한다. 제시한 기법은 내부적으로 JSON 프로토콜을 사용하여 메시지를 생성하고 UDP 소켓을 통하여 인터넷과 무선 통신한다. 제시한 기법의 타당성을 검토하기 위하여 Nexus S 안드로이드 폰에 앱 프로그램을 구현하고 Falinux(주)의 G100-S3C6410 보드를 이용하여 쿼드콥터 원격제어를 실험하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.6
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• pp.746-753
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• 2008

In this paper, we introduce the improved control method are communicated between a master and a slave robot in the teleoperation systems. When the master and slave robots are located in different places, time delay is unavoidable under the network environment and it is well known that the system can become unstable when even a small time delay exists in the communication channel. The time delay may cause instability in teleoperation systems especially if those systems include haptic feedback. This paper presents a control scheme based on the estimator with virtual master model in teleoperation systems over the network. As the behavior of virtual model is tracking the one of master model, the operator can control real master robot by manipulating the virtual robot. And LQG/LTR scheme was adopted for the compensation of un-modeled dynamics. The approach is based on virtual master model, which has been implemented on a robot over the network. Its performance is verified by the computer simulation and the experiment.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.301-304
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• 2003

Recently, the development of internet remote control system has been studied lively along with fast growth of internet. In this paper, we proposed the internet-based remote control and monitoring system using java platform. The apache web server that is now used worldwide was constructed for monitoring and controlling of an machine in administrator's web browser. We solved the limitation on security which is the biggest problem of internet control system due to strong security setting in web server. As a result of experiment which is used in the proposed remote internet control system, several time-delay occurred in internet. However, correct control result could be achieved without an error. And this system monitored informations of a RPM, temperature and the other condition in almost real time.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.10
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• pp.235-242
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• 2014

LED lighting control technique is one of the ongoing research areas for efficient management of LED lighting. In this paper, we design and implementation of LED street lighting remote control system which have a wired and wireless communication function for LED street lighting remote control. The implemented system can automatically dimming and individual(or consolidated) LED street lighting via RS-485/422 or Wi-Fi. In experimental results, the implemented remote control system was satisfactory for all of the desired functions.

• Proceedings of the KAIS Fall Conference
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• 2010.11a
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• pp.325-328
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• 2010

최근의 인터넷환경은 다양한 형태의 가상 및 원격 교육이 가능한 기반을 제공하고 있으며, 대학 및 교육기관에서는 이를 활용한 새로운 교육용 도구의 개발이 활발히 이루어지고 있다. 본 논문은 시공간의 제약 없이 실험을 수행할 수 있도록 하여 학습자들에게 반복 학습이 가능하도록 하였고, 유량제어를 실현 할 수 있는 비선형 시스템의 이중탱크 기구를 이용하여 다양한 제어이론을 실험할 수 있는 웹기반 실험실을 구현하였다. 전체 시스템은 SISO 시스템과 MIMO 시스템을 학습자가 선택하여 실험할 수 있도록 하였다. 유량제어 방식은 수동, PID, FUZZY 제어로 실험할 수 있도록 하여 학습자들에게 여러 가지 제어이론을 다양하게 학습할 수 있도록 구성하였으며, 릴레이 자기 동조법을 구현하여 학습자들로 하여금 PID변수를 확인할수 있도록 하였다. 또한 Web-Cam을 통하여 실험화면을 실시간으로 확인하면서 시뮬레이션을 동시에 실행하여 비교할 수 있도록 구현하였다.

• The Journal of Korean Institute for Practical Engineering Education
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• v.4 no.2
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• pp.158-161
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• 2012

Wee developed the automatic operation system for the laboratories equipment based on MATLAB GUI. By using Instrument Control Tool Box and standard protcol, PC and equipments are well connected each other. Wee developed the software to control the display of input and output between PC and equipments by using MATLAB GUI, This system will be effectively used in laboratories and experimental facilities and more in on-line education system for experiments.

• Journal of the Korean Institute of Intelligent Systems
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• v.13 no.4
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• pp.448-454
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• 2003

This paper concerns the establishment of the Internet-based virtual laboratory (VL). In control engineering, it is required to evaluate the feasibility of a newly developed controller design technique by applying to a physical system. However, it is inefficient to make or build such a experimental apparatus in all research activities. A possible remedy is to share such a apparatus spatially via the Internet. We set up techniques for the remote -control of various experimental apparatuses based on the Internet. The proposed VL forms a server-client structure and is implemented in multi-control interfaces.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.4
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• pp.48-56
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• 2000

This paper proposes the new concept & design method and implementation of LonWorks network system for telemetry & remote monitoring and control in BAS. In order to apply this open system, the essential components of Lonworks is analyzed and a new concepts of its design method is proposed. In our experiment, Lonworks network system for telemetry & remote monitoring and control of lighting are designed and fabricated. As a result, it is verified that LonWorks is open, interoperable, reliable network system from the experimental results, especially, node development, network configuration & design, secure communication and MMI.