Virtual Laboratory Software Proceeding VET ISBN

ISBN : 978-602-97249-0-5 International Seminar on Vocational Education and Training 218 of time online and are active everyday users of a variety of te chnologies including social networking services, word processing, and the Internet. However, in the context of experimenting with virtual laboratories for their learning, it seems that they would much rather not adopt these technologies at a fast rate. In particular, we hypothesize that this negative perception of virtual laboratories may be rooted in the social contract that exists between students and faculty. They expect face-to-face interactions with faculty and associate this with better learning. Also, their lack of experience with virtual laboratories seems to make them pre-disposed to viewing this modality as largely negative. Given that most students do not have the choice of selecting technologies that may be used for their curriculum, it seems faculty have to pay a lot more attention to what perceptions students bring into the learning environment. Clearly, as budgets and cost concerns become critical, newer technologies will be employed in the engineering curriculum. Our study suggests that perhaps using a well-planned phase-in approach to provide students with a wider range of choices when it comes to learning technologies may lead to more positive experiences for students. Also, all students participating in this study valued teamwork highly, and indicated by a significant amount that a virtual laboratory environment would not promote this critical attribute. The traditional laboratory may require less effort on the part of students to stay on task, and is a place where students are not connected to all of the other services that they may already use while they are online. Not having all of these connections may help them stay more focused in the traditional face to face laboratory, leading to a perception of a better learning environment.

2. Virtual Laboratory

A virtual laboratory is a tool for distance learning andor experimentation that allows people to share knowledge, data, voice, video, tools, and many other resources. It provides a suitable environment to extend, improve, integrate, refine, and assist the learning andor experimentation process of many subjects, thus contributing to an increase of the effectiveness of scientific research and widening the use of scarce or costly equipments. ISBN : 978-602-97249-0-5 International Seminar on Vocational Education and Training 219 Fig. Virtual Laboratory In the Lab

C. Configuration of Virtual Lab 1. Hardware

The remote experiment is located in one of the laboratory where needs nobody to attend. The Web is the gateway for the system to exchange the necessary information between the client machine and the server. The Web browser is a platform providing an environment to run the necessary program including the Java applets, Java Script and Flash used in the development of the laboratory. Once a login is successful, a WebCam is connected for broadcasting the environment of the hardware rig to the Internet. A typical display of the WebCam is where we can see the whole setup of the power electronics experiment. It also gives the student a feel of the actual setup. Also the light will also be switched on to increase the visibility. It is also to give a signal for any one in the remote lab that the machine is being used and no disconnection or movement are allowed. DAQ cards control the signals from the WWW server through a TCPIP channel.

2. Software

The software for building virtual laboratory is written by using Macromedia Flash MX, 3-D Max, PHP, MySQL and HTML where animation was used to raise the users’ interest. Also can use Joomla and Moodle for virtual laboratory if access by internetworking. The LabView Internet Developer Tool-kit was used for the Internet control. Also Common Gateway Interface CGI and Transmission Control Protocol TCP are used for the communications between the client and the Web server. The CGI ISBN : 978-602-97249-0-5 International Seminar on Vocational Education and Training 220 is written for the program involved with the HTML on the Web pages whereas the HTML is a popular form of access for sending data across the Internet.

3. Operation of Virtual Lab