A Web-based virtual environment for operator training

The wide accessibility and low cost of virtual reality (VR) on the World Wi de Web with the advent of the Virtual Reality Modelling Language (VRML) and VRML interpreters makes it ideal for use in providing cost-effective train ing for operators in selected complex technical environments. This paper presents SEDA-VRML, a VR-based learn-by-doing:system developed f or the training of maintenance workers in the troubleshooting and inspectio n of power transformers at Hydro-Quebec that is accessible from a Web brows er. SEDA-VRML is a prototype application of a reuse-driven design incorpora ting VRML, Java and an expert system within a user interface system (UIS) a rchitecture. The paper describes the functionality and design principles of SEDA-VRML, with key implementation results, to show how SEDA-VRML's design can indeed answer to the limitations of VRML to act as a cost-effective al ternative to traditional operator training systems for operator training in VR, as well as a basis for the rapid development of future operator traini ng systems.