Creating a Web-based Virtual Laboratory Chen Shihong Feb 27, 1999.

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Presentation transcript:

Creating a Web-based Virtual Laboratory Chen Shihong Feb 27, 1999

Content Introduction User authentication Remote access control Conclusion Future work

Introduction How to create a Virtual Laboratory implementation of local instrument control using LabVIEW implementation of remote instrument control through Internet

Hardware Structure

Introduction The problems we met during developing this project 1) User Authentication 2) Remote Access Control

User Authentication Protect web pages Allow authorised user to conduct the remote experiments Reject unauthorised requests

User Authentication Two methods for implementation of Remote Instrument Control though Internet - Single client/server structure using CGI - Double client/server structure using CGI and TCP/IP socket

User Authentication Our method A double Client/Server structure Using CGI method to generate dynamic HTML

A double client-server structure

User authentication model

Remote Access Control What is access conflict ? Our approach to solve access conflict

Remote Access Control Model

Conclusion Two steps to create a Virtual lab We have developed one remote laboratory experiment (Oscilloscope Experiment)

Future work Image compression and transmission through Internet Encryption of transmission Integration with Computer Supported Cooperative Work