• Journal of Engineering Education Research
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• v.6 no.1
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• pp.56-64
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• 2003

In this paper, we designed and implemented a client/server distributed environment and developed a web-based virtual laboratory system for electronic circuits. Since our virtual laboratory system is implemented to describe the on-campus laboratory, the learners can obtain similar experimental data through it. The proposed virtual laboratory system is composed of four important components : Principle Classroom, Virtual Experiment Classroom, Evaluation Classroom and Overall Management System. Through our virtual laboratory, the learners will be capable of learning the concepts and theories related to electronic circuit experiments and how to operate the experimental equipments such as multimeters, function generators, digital oscilloscopes and DC power supplies. Also, every experimental activity occurred in our virtual laboratory is recorded on database and printed out on the preliminary report form. All of these can be achieved by the aid of the Management System. The database connectivity on the web is made by PHP and the virtual labol'atory environment is set up slightly differently for each learner. Finally, we have obtained several affirmative effects such as reducing the total experimental hours and the damage rate for experimental equipments and increasing learning efficiencies as well as faculty productivity.

• 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.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.05a
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• pp.311-314
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• 2003

많은 공학 연구에서 실제 시스템을 활용한 검증은 매우 중요하다. 특히 제어공학의 경우 개발된 신 이론을 적용 및 검증할 수 있는 실험장비의 확보는 필수적이다. 그러나 현실적으로 적절한 실험장비를 확보하는 것은 비경제적이다. 인터넷을 활용하여 실험장비의 원격실험을 가능케 한 가상실험실은 제어공학 연구에 유용하다. 인터넷의 보급과 함께 가상실험실에 대한 연구가 활발히 진행되고 있으나, 대부분의 경우가 특정 시스템에 한정된 가상 실험실의 구축에 한정되어 있다. 본 논문에서는 기존 연구와 달리 다양한 실험 장비에 적용 가능하며 다양한 제어 기법을 제공하는 가상실험실의 구현을 제안한다. 제안된 가상실험실은 서버-클라이언트 구조를 가지며 다중 제어 인터페이스로 구현된다.

• Journal of Engineering Education Research
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• v.4 no.1
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• pp.20-25
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• 2001

This paper presents the practical implementation methodology of a web-based Virtual Laboratory in the field of electrical and electronic engineering, in which efficient self-learning can be available due to high interactivities between a teacher and a learner. Now that the proposed Virtual Laboratory is composed of 3 learning classrooms and their management system, the learners can understand easily the several important electrical concepts and make an experiment in the cyberspace through simple mouse manipulations. The results of this research are to allow the implementation of an efficient Virtual Laboratory system, and are also expected to make a contribution to the activation of educational system in cyberspace.

• The Journal of Korean Association of Computer Education
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• v.11 no.1
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• pp.23-32
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• 2008

In this paper, we have investigated the education effect of a web-based virtual laboratory for digital logic circuits which consists of multimedia contents about the usages of equipments for logic circuit experiments and the experimental logic circuits. In case of the engineering experiment of the lower grades in universities, preunderstanding about the usages of experimental equipments and the experimental circuits is necessary for the learners to conduct the experiments well. But it is impossible for the learners to have access to the real experimental equipments earlier due to the lack of equipments and the difficulty in management of the equipments. We have implemented the digital logic circuit virtual laboratory which provides the same experimental environment as a real experimental lab, and the learner can conduct the same experiments as the real ones before the real laboratory class. The learners using the laboratory have reduced the experiment completion time by the average of about 8.2% during a term, compared with the learners not using the lab.

• The Journal of Korean Association of Computer Education
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• v.10 no.4
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• pp.113-124
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• 2007

The virtual laboratory is implemented by Java applets and FLASH animations, which provides the learners with improved experimental methods. If the learners have access to the virtual laboratory system through signing up procedure, they can acquire the fundamental concepts and make a virtual experiment on 8051 microcontroller. In addition, we have implemented the remote laboratory for practicing 8051 microcontroller, which can be used to compensate the absence of reality, occurred during virtual laboratory session. Finally, the proposed integration laboratory provides the learners with almost all the same and advantages as a real laboratory environment.

• Journal of Engineering Education Research
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• v.5 no.1
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• pp.19-26
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• 2002

This paper presents a virtual laboratory system which can be creating efficiencies in the learning process. The proposed virtual laboratory system for electrical circuits provides interactive learning environment under which the multimedia capabilities of world-wide web can be enhanced. The virtual laboratory system is implemented to describe the on-campus laboratory, the learners can obtain similar experimental data through it. In the proposed virtual laboratory system, every activity occurred in the virtual laboratory will be recorded on database and printed it out on the preliminary report form. The database connectivity is made by PHP and the virtual laboratory environment is set up slightly differently for each learner The virtual laboratory system is composed of four important components : Principle classroom, Simulation classroom, Virtual experiment classroom and Management system. Learning efficiencies as well as faculty productivity are increased in this innovative teaching and learning environment.

• Proceedings of the KAIS Fall Conference
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• 2008.05a
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• pp.198-201
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• 2008

인터넷의 비약적인 발달은 제어시스템의 설계 및 운영에도 많은 영향을 미치게 되어 지금까지와는 전혀 다른 시스템 구현이 가능한 환경으로 만들어 가고 있다. 이와 같은 배경에서 본 연구에서는 LabVIEW를 이용한 복합 공정의 제어 및 모니터링을 Web을 기반으로 한 새로운 방법의 원격제어 시스템을 사용하여 가상실험실을 구현하였다. LS산전의 GLOFA-GM3와 미쓰비시의 MELSEC-Q PLC를 각각 TCP/IP와 RS-232C통신을 사용하여 복합공정 제어 시스템을 구현하였다. NI사의 LabVIEW 프로그램에서 지원하는 Web 출판 기능을 사용하여 웹상에서 50대의 Clint PC의 접속을 가능하게 하여 원격으로 접속, 학습이 가능하도록 가상실험실을 구현하였으며 학습자들은 원격으로 복합 제어공정을 실시간으로 학습할 수 있게 되었다. 나아가 Web 상에서 원격제어의 가능성을 활용하여 산업체에서의 활용범위를 넓히고, 가상 교육환경의 가능성을 열었다.

• Journal of Engineering Education Research
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• v.5 no.1
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• pp.27-33
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• 2002

Recently, according to the appearance of various virtual websites using multimedia technologies, the internet applications in engineering education have drawn muchinterests. But unidirectional communication, simple text/image-based webpages and tedious learning process without motivation, etc. have made the lowering of educational efficiency in cyberspace. This paper presents a virtual laboratory system which can be creating efficiencies in the learning process. The proposed virtual laboratory system for digital logic circuits provides interactive learning environment under which the multimedia capabilities of world-wide web can be enhanced. The virtual laboratory system is implemented to describe the on-campus laboratory, the learners can obtain similar experimental data through it. The virtual laboratory system is composed of four important components : principle classroom, simulation classroom, virtual experiment classroom and management system. Learning efficiencies as well as faculty productivity are increased in this innovative teaching and learning environment.

• Journal of Engineering Education Research
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• v.3 no.2
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• pp.31-37
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• 2000

Recently, internet applications for efficient cyber education have drawn much interests. The world-wide web provides new opportunities for cyber education over the internet. This paper presents a virtual lab system which can be used on the world-wide web. The proposed virtual lab system provides the improved learning methods which can enhance the educational efficiency in engineering experiments. If the students enter the virtual lab system on the web, they can make an experiment on basic electrical and electronic principles through simple mouse manipulation. Since proposed virtual lab system is implemented to describe the actual lab system, the students can obtain similar experimental data through it. Several sample Java applets are illustrated as examples.