Alternatives in the Implementation of Internet-Enabled Laboratory Experiments in Undergraduate Civil Engineering Courses

摘要

Recent developments in information technology have generated considerable interest in the field of internet-enabled remote observation and control of laboratory experiments. This paper describes two alternative frameworks required to adapt two laboratory experiments, one each in the areas of structural and geotechnical engineering, for remote control and observation including protection from misuse. Faculty and students will be able to observe, conduct, control, and analyze experimental data either in or outside of a classroom. In the face of continuously evolving distance education programs, more and more educators recognize the importance of a complete educational experience involving theory as well as hands-on experiments. In general, a large number of students lack opportunities to gain hands-on experiences due to the availability of only a few experimental facilities nationwide. Opportunities can be created by the availability of such facilities via remote access and control within a distance learning environment. Even for on-campus students, the possibility of experimental training can be unrealized due to economic constraints in developing a large number of experimental set-ups for simultaneous use in a laboratory environment within a limited allotted time. Simulations (virtual experiment) are often used to integrate classroom lecture with some kind of hands-on experience. However, educators have pointed out that simulation systems, while important, cannot completely substitute for experience with actual materials. One of the two implementations considered in this paper uses LABVIEW for not only data acquisition and control but also for providing web access and for developing features to safeguard against the possibility of damage to the experimental setup if left unmonitored. The other implementation considers the use of equipment-specific software for control in conjunction with MS-Netmeeting for web accessibility. The advantages and limitations associated with each implementation are discussed with respect to the experiments being adapted. Different options available within LABVIEW are also presented and our experiences on the advantages and limitations of these options discussed.