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Development of Web-Based 3D Oscilloscope Experimentation

Ko Chi Chung, Ben M. Chen, Cheng Chang Dong, Xiang Xu

Department of Electrical and Computer EngineeringNational University of Singapore

Singapore 117576

Email: [email protected]

URL: http://vlab.ee.nus.edu.sg/vlab/vr-osci

Virtual Reality Interface for Web-Based Remote Experimentation


1. Objectives

2. Features

3. Hardware Infrastructure

4. Software Architecture and Tools

5. Interface of the oscilloscope experiment


7. User feedbacks

6. Key Techniques in this project


Objectives

Perform a 3D-based experiment any time anywhere through the Internet

Perform an actual experiment physically over Internet

Share some expensive instruments

Have a more natural hands-on experience of using these instruments



Features

Use a browser with Java and Java 3D runtime, such as Microsoft Internet Explorer or Netscape Communicator

Adopt some relevant real instruments in the laboratory instead of simulating the experimental result on the client computer

Give a more realistic feel of the instrument in manipulating 3D control buttons and knobs of the instrument



Hardware Infrastructure

Internet

NUSNET-III

CircuitBoard

GPIBInstrument Controller

Remote PC

WWW Server



Software Architecture and Tools

NUSNET-III

Internet

Program for Command/Data Transmission

ControlSubmodule ..... Control

Submodule

Command/Data Server Program

Instruments Circuit

Client

www server

LabVIEW

HTTP ServerHTML Pagewith Java3Dapplet

mSQL Database

Perl

Linux

C

Browser withJava 3DRuntime



To obtain much more realistic feel in conducting the oscilloscope experiment


3-Dimensional Oscilloscope Virtual Instruments


To walk around the whole virtual laboratory while conducting experiment


3-Dimensional Virtual Scene


Key Techniques in this project


Design Components

Design picking behavior

Design outdoor scene

Design navigating behavior



Design Components

Static components, including case, screen, label, wall, window, etc.

Control components, including button, knob, slider, and connector.


Design Navigating Behavior


To view the instruments and experiment from different angles.


Design Picking Behavior


To manipulate the individual control component on virtual instruments.


Design Outdoor Scene


To simulate a outdoor scene, including the live seawave and airplane.


User Feedbacks


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3-D Column 1

Interface

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User Feedbacks (cont)


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Overall


Thank you!


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