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  • 1.
    Claesson, Lena
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Håkansson, Lars
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Using an Online Remote Laboratory for Electrical Experiments inUpper Secondary Education2012In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 8, no S2, p. 24-30Article in journal (Refereed)
    Abstract [en]

    The use of remote laboratories in courses at university level has been reported in literature numerous times since the mid 90?s. In this article focus is on activities carried out by teachers and students, at the Upper Secondary School Level, using the remote laboratory VISIR (Virtual Instrument Systems in Reality). The Upper Secondary School, Katedralskolan in Lund, Sweden, cooperate with Blekinge Institute of Technology, Sweden, in a project that concerns the introduction of remote laboratory environment suitable for Upper Secondary School science courses. A remote laboratory in electronics has been introduced and is used as a complement to the traditional workbench in the hands-on laboratory. Significant results from the project are; 1) the great interest shown by the students for the remote experiments, 2) the students appreciation for the fact that it was not simulations but actual real experiments, 3) the remote laboratory is easy to implement for use by both teachers and students and 4) it can be used simultaneously by many students.

  • 2. Gustavsson, Ingvar
    et al.
    Zackrisson, Johan
    Nilsson, Kristian
    Garcia-Zubia, Javier
    Håkansson, Lars
    Claesson, Ingvar
    Lagö, Thomas L
    A Flexible Instructional Electronics Laboratory with Local and Remote Lab Workbenches in a Grid2008In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 4, no 2, p. 12-16Article in journal (Refereed)
    Abstract [en]

    The Signal Processing Department (ASB) at Blekinge Institute of Technology (BTH) has created two online lab workbenches; one for electrical experiments and one for mechanical vibration experiments, mimicking and supplementing workbenches in traditional laboratories. For several years now, the workbenches have been used concurrently with on-site ones in regular, supervised lab sessions. The students are encouraged to use them on a 24/7 basis for example, in preparation for supervised sessions. The electronic workbench can be used simultaneously by many students. The aim of a project known as VISIR (Virtual Systems in Reality) founded by ASB at the end of 2006, is to disseminate the online lab workbenches using open source technologies. The goal is to create a template for a grid laboratory where the nodes are workbenches for electrical experiments, located at different universities. This paper focuses on standards, pedagogical aspects, and measurement procedure requirements.

  • 3. Gustavsson, Ingvar
    et al.
    Zackrisson, Johan
    Åkesson, Henrik
    Håkansson, Lars
    Claesson, Ingvar
    Lagö, Thomas L
    Remote Operation and Control of Traditional Laboratory Equipment2006In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 2, no 1, p. 1-8Article in journal (Refereed)
    Abstract [en]

    Physical experiments are indispensable for developing skills to deal with physical processes and instrumentation. The Internet provides new possibilities for universities and other teaching organizations to share laboratories and increase the number of lab sessions without incurring any increase in cost. Blekinge Institute of Technology in Sweden has opened a traditional electronics laboratory for remote operation and control 24/7; it is the first of its kind. The laboratory is equipped with a unique virtual interface enabling students to recognize on their own computer screen the desktop instruments and the breadboard they have already used in the local laboratory. The research is focused on what is perceived to be the greatest challenge, i.e. to give the student laboratory experience that is as genuine as possible despite the lack of direct contact with the actual lab hardware at the same time as it allows the teacher to use existing equipment and teaching material. The goal is to produce an open international standard.

  • 4.
    Khan, Imran
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Muthusamy, Dineshkumar
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Ahmad, Waqas
    Sällberg, Benny
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Nilsson, Kristian
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Zackrisson, Johan
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Gustavsson, Ingvar
    Blekinge Institute of Technology, School of Engineering, Department of Electrical Engineering.
    Håkansson, Lars
    Performing active noise control and acoustic experiments remotely2012In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 8, no special issue 2, p. 65-74Article in journal (Refereed)
    Abstract [en]

    This paper presents a novel and advanced remotely controlled laboratory for conducting Active Noise Control (ANC), acoustic and Digital Signal Processing (DSP) experiments. The laboratory facility, recently developed by Blekinge Institute of Technology (BTH) Sweden, supports remote learning through internet covering beginners level such as simple experimental measurements to advanced users and even researchers such as algorithm development and their performance evaluation on DSP. The required software development for ANC algorithms and equipment control are carried out anywhere in the world remotely from an internet-connected client PC using a standard web browser. The paper describes in detail how ANC, acoustic and DSP experiments can be performed remotely The necessary steps involved in an ANC experiment such as validity of ANC, forward path estimation and active control applied to a broad band random noise [0-200Hz] in a ventilation duct will be described in detail. The limitations and challenges such as the forward path and nonlinearities pertinent to the remote laboratory setup will be described for the guidance of the user. Based on the acoustic properties of the ventilation duct some of the possible acoustic experiments such as mode shapes analysis and standing waves analysis etc. will also be discussed in the paper.

  • 5. Nilsson, Kristian
    et al.
    Zackrisson, Johan
    Pettersson, Mats
    Remote Access of Computer Controlled Experiments2008In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 4, no 4, p. 52-56Article in journal (Refereed)
    Abstract [en]

    In this paper, we present a way for students to access and operate laboratory equipment, controlled by a laboratory computer via a remote access program. In this way, the solution is not dependent on the specific laboratory equipment, as long as the equipment can be remotely controlled. The system can easily be altered to be used in another laboratory setup. Students are able to make reservations of experiment sessions through a web interface, which is administrated by the system administrator. The solution proposed in this paper is one way to speed up the development of remote accessible laboratories. Most of the proposed solution is based on open source software and the hardware is built on ordinary consumer parts, which makes the proposed remote laboratory architecture cost effective.

  • 6.
    Salah, Razwan Mohmed
    et al.
    University of Algarve, PRT.
    Alves, Gustavo
    Polytechnic of Porto, PRT.
    Guerreiro, Pedro
    University of Algarve, PRT.
    Gustavsson, Ingvar
    Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
    Using UML models to describe the VISIR system2016In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 12, no 6, p. 34-42Article in journal (Refereed)
    Abstract [en]

    Analysis and design are important phases in the system development lifecycle. In these phases, developers record information necessary for properly understanding the nature of the systems under consideration. We consider a particular type of system, named Remote Lab that allows both teachers and students to perform real experiments over the internet and we focus on Virtual Instrument Systems in Reality (VISIR). We describe a summarized web interface of VISIR using the Unified Modeling Language (UML). Our case study aims at identifying the requirements of VISIR and at creating a set of UML diagrams that succinctly provide enough information to both developers and users so that they acquire enough information for building a general understanding of it. Additionally, we provide elements for extending UML to better support further user interface development in VISIR.

  • 7. Tröger, Peter
    et al.
    Rasche, Andreas
    Feinbube, Frank
    Wierschke, Robert
    SOA Meets Robots: A Service-Based Software Infrastructure for Remote Laboratories2008In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 4, no 2, p. 24-30Article in journal (Refereed)
    Abstract [en]

    With the ongoing internationalization of virtual laboratories, the integration aspect becomes more important. The meanwhile commonly accepted ’glue’ for such legacy systems are service oriented architectures, based on standardized and accepted Web service standards. We present our concept of the ’experiment as a service’, where the idea of service-based architectures is applied to virtual remote laboratories. In our laboratory middleware, experiments are represented as stateful service implementations and jobs as logical service instances of these implementations. We discuss performance, reliability, security and monitoring issues in this approach, and show how the resulting infrastructure - the Distributed Control Lab - is applied in the European VetTrend project.

  • 8. Zackrisson, Johan
    et al.
    Svahnberg, Charlie
    OpenLabs Security Laboratory: The Online Security Experiment Platform2008In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 4, no special issue: REV2008, p. 63-68Article in journal (Refereed)
    Abstract [en]

    For experiments to be reproducible, it is important to have a known and controlled environment. This requires isolation from the surroundings. For security experiments, e.g. with hostile software, this is even more important as the experiment can affect the environment in adverse ways. In a normal campus laboratory, isolation can be achieved by network separation. For an online environment, where remote control is essential, separation and isolation are still needed, and therefore the security implications must be considered. In this paper, a way to enable remote experiments is described, where users are given full control over the computer installation. By automating the install procedure and dynamically creating isolated experiment networks, remote users are provided with the tools needed to do experiments in a reproducible and secure environment.

  • 9. Zutin, Danilo
    et al.
    Auer, Michael
    Gustavsson, Ingvar
    A VISIR lab server for the iLab shared architecture2011In: International Journal of Online Engineering, ISSN 1868-1646, E-ISSN 1861-2121, Vol. 7, no SUPPL, p. 14-17Article in journal (Refereed)
    Abstract [en]

    This paper describes the work done at the Carinthia University of Applied Sciences towards integrating VISIR-based labs on the iLab architecture. The Virtual Systems in Reality (VISIR) project is carried out by the Blekinge Institute of Technology, Sweden and features a platform for performing experiments in different domains.

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