virtual labs

Dr. Vinod Kumar Professor & Head, Electrical Engineering DepartmentNational Coordinator, Q.I.PI.I.T. Roorkee ROORKEE – 247667 (Uttarakhand

Mission Project for Virtual Labs

VIRTUAL LABS

Outline of the talk

• Motivation• Achievements of the Pilot Phase• Proposed Areas and Virtual Labs• Lessons learnt from the Pilot Phase• Methodology for the Main Phase• Virtual Labs at IIT Roorkee

Motivation

Physical Distances Limit Doing Experiments

Sharing of Costly

Equipment

Quality Labs

Today most equipment come with a computer interface for control and data storage.

It is possible to design experiments around some of these equipment which would enhance the learning of students.

Internet-based experimentation further permits use of resources – knowledge, software, and data available on the web

The Team

IIT Delhi IIT Roorkee IIT Kanpur IIT Bombay IIT Madras IIT Kharagpur IIT Guwahati IIIT Hyderabad Amrita University Dayalbagh Institute NITK Surathkal COE Pune

Objectives of the Pilot Phase

• To crystallize the concept of a Virtual Lab, whichwill essentially comprise of a user-friendlygraphical front-end, working in synchronizationwith a backend, possibly consisting of asimulation-engine running on a server or actualmeasurement data or a real experiment.

• To identify the suitable topics, where Virtual Labs will provide maximum benefit to the students using them.

• To develop approximately Ten Virtual Labs as a proof of concept

Labs developed during Pilot PhaseIITD IITK IITB IITM IITKGP IITG IITR IIITH AMRITA

DAYAL-BAGH

Wireless Lab (T)

Physical Sciences- Low

temp Electrical

Transport and Property

measurements (T)

Control systems Lab (T)

Virtual Robotic

s lab (S & T)

Mechanisms and

Robotics lab (T)

Systems, communication and

control laboratory for remote users (T)

Biomedical Instrumentation (S &

T)

Physical sciences

(S/M)

Physical Sciences

and Chemical Sciences

(S)

Analytical Lab (M & S)

FPGA & Digital Design

Lab (T)

Mechanical Sciences -

Liquid Crystal Thermography

of oscillating single phase

flow in a Microchannel

(S & T)

Chemical Engineeri

ng (T)

Microelectronics

and VLSI Engineeri

ng Laboratory (M/T)

Virtual Labs for

Mechanical Vibrations

(M)

Power Electronics

(S & T)

Structural

dynamics (S)

Biotechnology labs

(S)

Virtual Advanced

Lab for Design and

Test in Electronics

(T)

Engineering Electromagne

tics Laboratory

(S)

Materials -Thermal

processing & Micro-

structural Characterizati

on (M & T)

Power system Lab (S)

Basic Electrical

and Electronics lab (S)

Virtual Lab for study of

Binary Distillation & VLE (S)

GPS/Total Station for

Route Mapping (S

& T)

Haptics (T)

Virtual Smart Structures

and Dynamics Lab

(T & S)

Physical Sciences –

Optical Device Characterizati

ons (T)

Mechanical

Engineering Lab

Virtual High

Voltage lab (S)

Electrical Machines

(T)

Virtual Lab l d

Microelect b

Achievements - Pilot Phase

• Twenty-three Virtual Labs have been developed, integrated and are ready for field trials

• All labs are integrated to the main Virtual Labs website: www.vlab.co.in

• All these Virtual Labs have Related Material / Manuals / Additional resources Step-by-step procedures Quiz to test the understanding

• Trial runs are underway• Feedback is being collected in order to refine the

Virtual Labs

http://www.vlab.co.in/

Objectives of the Virtual Lab Project(Main DPR)

• To identify suitable topics where Virtual Labs will provide maximum benefit to a large number of students using them.

• To design these Virtual Lab which will essentially comprise of a user-friendly graphical front-end, working in synchronization with a backend, possibly consisting of a simulation-engine running on a server or actual measurement data or a remotely-triggered experiment.

• To develop approximately one hundred and fiftyVirtual Labs in various areas of Science and

Intended Users

• College Students who do not have access to expensive equipment/ lab-facilities.

• High-school students, whose imagination will be triggered, possibly motivating them to take up higher-studies.

• Researchers in different institutes who can collaborate and share expensive equipment and resources.

• Different engineering colleges, who can benefit from the content and related teaching resources.

Types of Virtual Labs

Modeling / Simulation

Based

Remote Triggering of Experiments

Measurement Based

Proposed Areas for Virtual Labs

• Physical Sciences,• Chemical Sciences• Mathematical Sciences• Computer Science• Electrical Engineering• Mechanical, Industrial and Aeronautical Engineering,• Chemical Engineering• Civil Engineering, Mining and Material Science• Biomedical and Biotechnology Engineering,• Reliability Engineering, Energy Studies and Social

Sciences

Implementation Methodology based on Learning from the Pilot Phase

• Mid-Term evaluations• Trial Runs

– Inter-institute Trial matrix– Trials in Local colleges

• Feedback– From expert committee members– From actual users

• Whitepaper• Working document

Mid-term evaluations

• The pilot phase had two Mid-term evaluations• Members of the Expert committee look at the

actual demonstrations and provide a feedback• The lab-proposals for the main DPR have been

in accordance with the evaluation criteria set by the mid-term evaluations and feedback.

Trial Runs• Many labs are undergoing field trials• Methodology

– Trials within the Institute– Inter-Institute Trial matrix– Trials in Local Colleges

• Each faculty developing a virtual lab will get the lab technically evaluated by an expert

• The feedback from field trials are being documented, analyzed and used for refining the experiments

• Workshops are being organized to educate local colleges and use them for trial runs

PROJECT Coordinator-

Dr. Vinod KumarHead & Prof.Electrical Engg. Dept.

INDIAN INSTITUTE OF TECHNOLOGY - ROORKEEBIOMEDICAL INSTRUMENTATION LAB

BIOMEDICAL VIRTUAL LAB @INDIAN INSTITUTE OF TECHNOLOGY -ROORKEE

BIOMEDICAL INSTRUMENTATION LAB INDIAN INSTITUTE OF TECHNOLOGY - ROORKEE

Signal Processing Tool

Signal Express Tool

Image Processing Tool

Report Generation Tool

Vision & Motion Tool

LabVIEW Server

SERVER With LabVIEW Software

Client Computer with LabVIEW Runtime Engine

Users on Internet

Flow of Information - Virtual Lab


Feedback For Simulator

Feedback For BIOPAC MP150


MP150 CONTROL

SIMULATOR CONTROL

DATA ANALYSIS

LIVE LAB VIDEO

QUESTIONNAIRE

REPORT GENERATION

BIOMEDICAL VIRTUAL LAB


LABsVIRTUAL BIOMEDICAL


http://192.168.110.165:82/vlab

http://192.168.110.167:82/vlab

1. VIRTUAL LAB - ECG ACQUISITION & ANALYSIS

2. VIRTUAL LAB - EEG ACQUISITION & ANALYSIS

3. VIRTUAL LAB - EMG ACQUISITION & ANALYSIS

4. VIRTUAL LAB - SPIROMETRY ACQUISITION & ANALYSIS

5. VIRTUAL LAB - ENHANCEMENT & SEGMENTATION OF MAMMOGRAM

6. VIRTUAL LAB - DIGITAL SIGNAL PROCESSING

7. VIRTUAL LAB - DIGITAL IMAGE PROCESSING


VIRTUAL LAB - ECG ACQUISITION & ANALYSIS


http://192.168.110.165/ecg.html

http://192.168.110.165/ecg.html

Review : Acquired ECG Signal


ECG Signal & HRV Parameters Analysis


VIRTUAL LAB - EEG ACQUISITION & ANALYSIS


http://192.168.110.167/eeg.html

http://192.168.110.167/eeg.html

Review Acquired EEG Signal


EEG Signal Analysis


EEG Signal Parameters Evaluation


VIRTUAL LAB - EMG ACQUISITION & ANALYSIS


http://192.168.110.165/emg.html

http://192.168.110.165/emg.html


EMG Parameters Analysis

VIRTUAL LAB - SPIROMETRY ACQUISITION & ANALYSIS


http://192.168.110.165/sm.html

http://192.168.110.165/sm.html


Spirometry Parameters Analysis

VIRTUAL LAB - ENHANCEMENT & SEGMENTATION OF MAMMOGRAM


http://192.168.110.165/cm.html

http://192.168.110.165/cm.html

VIRTUAL LAB - DIGITAL SIGNAL PROCESSING


http://192.168.110.167/dsp.html

http://192.168.110.167/dsp.html


DSP : Aliasing


DSP : Convoulution


DSP : Power Spectrum


DSP : Fast Fourier Transform


DSP : Discrete Cosine Transform


DSP : Hilbert Transform


DSP : Wavelet Transform


DSP : FIR Filters


DSP : IIR Filters


DSP : Window Implementation


DSP : Signal Filtering


DSP : Median Filter


DSP : Sample Compression

VIRTUAL LAB - DIGITAL IMAGE PROCESSING


http://192.168.110.165/dip.html

http://192.168.110.165/dip.html


DIP : Segmentation


DIP : Enhancement

Electrical Machine Virtual Lab

INDIAN INSTITUTE OF TECHNOLOGY - ROORKEEElectrical Machine LAB

Objective of the Project

Use of Information Communication Technology(ICT) to enhance the practical skills in electrical engineering.

To create a Standard Virtual Experiments in Electrical Machinery.

To optimize the available Laboratory resource through Virtual Labs.

VRL

A DC shunt generator is run at different loads using LABView’s simple user-interface.

Magnetization and external characteristics are plotted by the program.

After a Questionnaire, a final report is generated.

The ExperimentObjective: To study and draw the characteristics of DC shunt Generator.

VRL

Voltage Sensors

DC shunt generatorThree phase Induction Motor

Lamp LoadCurrent Sensors

RPM indicatorDC SupplyNI USB-6212 DAQ moduleD-Link DCS 5220Solid State RelaysWorkstation (DELL Precision T7500)

The Set Up Used

Connecting Wires

Star- Delta Starter

3- Phase Supply

VRL

The Set Up Used

Induction Motor –DC Generator Couple

Star –Delta Starter

DC Supply

VRL

The Set Up Used

Solid State Relays

Lamp Load

D-Link Webcam

VRL

The Set Up Used VRL

The Sensors used

Sensors

Hall Effect

Current Sensors

Hall Effect

Voltage Sensor

Speed Sensor

VRL

Hall Effect Current Sensors

For Field CurrentType – LT 200-SRated Primary Current- 200AConversion Ratio – 1:2000Power Supply – 12V to 18V

For Armature CurrentType – HTP 50Conversion Ratio – 1000:1Power Supply – +/- 15VRated Current – +/- 50A

VRL

CH-1228 GenèveType – 200-AW/2/800Primary voltage - 800VSecondary Voltage –

100V/10mAPower Supply- 15VIsolation – 6kV Internal Resistance – 40Ω

Hall Effect Voltage Sensor

For sensing terminal voltage of the generator

VRL

Speed Sensor

BR (+) 8 mmBK O/P 10 IO 30 V DCNPN BL (–) 200/300 mA

MODEL : IM 1901 ESR 6487

Sensing Unit

Display Unit : RPM indicator

VRL

Data Acquisition

16 Analog inputs (16-bit, 400 kS/s)

2 Analog outputs (16-bit, 250 kS/s)

32 Digital I/O

Two 32-bit counters

Bus-powered USB for high mobility

NI signal streaming for sustained high-speed data streams over USB

Compatible with LabVIEW, ANSI C/C++, C#, Visual Basic .NET, and Visual Basic 6.

0NI-DAQmx driver software and LabVIEW Signal Express LE interactive data-logging software.

NI DAQ CARD For data acquisition

VRL

Software Used

LabVIEW 2009

VRL

Experiment Welcome Slide VRL

The Experiment ScreenshotVRL

The Results being Plotted VRL

User Remarks VRL

Questionnaire on ExperimentVRL

Report Generation VRL

List of Proposed ExperimentsDC Machines

Magnetization Characteristics of a Separately Excited DC Generator

Load Test on a Shunt Generator

Load Test on a Series Generator

Load Test on a Compound Generator

Load Test on a Shunt Motor

Load Test on a Series Motor

Efficiency of shunt Motor by Loss-Summation Method.

Speed Control of a DC Motor

VRL

List of Proposed Experiments

Induction Machine

Equivalent circuit model and Circle Diagram of a three-phase Induction Motor

Load Test on a three-phase Induction Motor

Speed Control of three-phase Induction Motor

Characteristics of a Self Excited Induction Generator

Equivalent circuit of a single-phase Induction Motor

VRL

List of Proposed ExperimentsSynchronous Machines

Voltage Regulation of a three-phase Alternator

V- curve plot of a Synchronous motor

Determination of direct axis and quadrature axis reactance of a salient pole synchronous machine

Parallel Operation of Alternators

Negative and Zero Sequence Reactance of a Synchronous Machine

VRL

URL

http://192.168.110.49/DCGenerator.html

VRL




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