Broadcasting Engineering Laboratories
Contents
1. Figure Video 7 a Front panel of the VI for the boiling experiment b Remotely controlled LabVIEW front panel displaying real time temperature data Picture shows increasing temperatures as the ball is being heated in the furnace Subsequent drop in temperatures due to quenching is shown in the video SUMMER 2008 11 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet NPRE e Lab I Block Diagram File Edit Operate Tools Browse Window Help 212 m PI boleh cnn ro Sox ao emperature Chart Ss abe iFrror message ab Control i Figure 8 Block diagram for the heat transfer experiment graphical source code Front View Back View b Figure 9 a Canon VB C50i PTZ Network Camera b Canon multi terminal module VB EX50 5 Remote Client The remote clients only need a web browser to log into the web sites Remote comput ers must have LabVIEW Run time Engine and Java Runtime Engine JRE installed LabVIEW runtime engine is needed to receive and display the data while Java runtime engine is needed for the Canon webcam These are free to download from and 12 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet LiveApplet Large Microsoft Internet Explorer Dex F2. Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet Figure 2 Remote client facility at the University of Illinois showing the heat transfer experiment to a group of students deciding factor Moreover docking capabilities with other gadgets such as microphones etc can be enhanced with the addition of a multi terminal module In addition the network control feature in the primary webcam chosen eliminates the need for a computer that controls the camera That is this camera is controllable over the internet from any computer hooked to the network thus introducing more flexibility Security feature available in this camera does allow the camera host to restrict access to specific IP addresses only Additional less expensive web cams that do not have these extended features are also installed EQUIPMENT DESCRIPTION AND EXPERIMENTS Experiment specific details of the four components of this e lab are described in detail in this sec tion Details are given for a heat transfer experiment Later a gamma ray spectroscopy experiment is briefly described SUMMER 2008 5 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet Local Lab Experiment and Experimental Set Up A boiling heat transfer experiment used in a laboratory course in the Department of Nuclear Plasma and Radiological Enginee
3. A Gurocak 3 presented a novel method for distance delivery of a manufacturing automation laboratory course among different campuses of Washington State University WSU by linking them with an interactive TV system called WHETS In this model each site has its own complete physical laboratory All students must assemble in one of these remote labs Moreover there is little interaction with the instructor and little flexibility in controlling the experiments from remote sites 2 3 Henry and Nuttal 4 and Henry and Zollars 5 have developed remote web based labs using LabVIEW technology to broadcast control and chemical engineering experiments 5 Efforts are also underway in some nuclear engineering departments towards development of distance lab capabilities 6 14 For example both North Carolina State University 6 and Penn State University 7 have developed modules to provide access to their reactor labs via the internet Moreover University of Illinois 8 12 University of Wisconsin 13 and University of Massachusetts 14 are also actively engaged in similar developments 2 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet In this paper we report recent developments in efforts at the University of Illinois to build a framework that exploits mostly off the shelf technology to develop an e Lab module for distance education The i
4. al Conference Chicago USA June 18 21 2006 11 P K Jain J F Stubbins and Rizwan uddin Interactive virtual laboratory for distance education in nuclear engineering Proceedings of the PHYSOR 2006 topical meeting Vancouver Canada Sept 10 14 2006 12 K D Kim P K Jain and Rizwan uddin Web and system code based interactive nuclear power plant simulators Proceedings of the International Topical Meeting on Nuclear Plant Instrumentation Control and Human Machine Interface Technologies Albuquerque USA Nov 12 16 American Nuclear Society 2006 13 E Edwards A Sweet M Blanford R Agasie P K Jain and Rizwan uddin Distance reactor laboratory and virtual tours Trans ANS Vol 94 2006 14 P K Jain S Markidis B G Jones Rizwan uddin J R White and L Bobek Web casting of nuclear reactor experiments Trans ANS Winter Meeting and Technology Expo Albuquerque USA Nov 12 16 American Nuclear Society 2006 15 LabVIEW 7 1 National Instruments Hands On Campus Workshop Manual Sept 2003 Edition 2005 16 Centra Live for e Meetings hnttp www saba com 17 L S Tong and Y S Tang Boiling heat transfer and two phase flows CRC 1997 18 NPRE 451 Lab Manual Department of Nuclear Plasma and Radiological Engineering University of Illinois at Urbana Champaign USA 2005 19 USB TEMP Temperature Measurement Module Measurement Computing Corporation User s G
5. awaii USA 1999 3 H Gurocak e Lab An electronic classroom for real time distance delivery of a laboratory course Jour nal of Engineering Education Vol 90 pp 695 705 2001 4 J Henry and E Nuttal Chemical engineering experimentation over the internet AIChE Annual Meeting Paper 501a 2003 5 J Henry and R Zollars Introducing reality into process control classes ASEE annual meeting 2005 6 G Meyers and R M Edwards Internet access to reactor control experiments Proceedings of the fourth ANS International Topical Meeting on NPIC and HMIT American Nuclear Society 2004 SUMMER 2008 15 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet 7 L F Miller A l Hawari and A Cook Internet university reactor experiments for education in nuclear engineering Trans ANS Vol 91 957 958 2004 8 K D Kim and Rizwan uddin A web based nuclear simulator using RELAPS and LabVIEW Nuclear Engineering and Design Vol 237 1185 1194 2007 9 Y Gu and Rizwan uddin UIUC s contribution to Big 10 s INIE project Proceedings of the PHYSOR 2004 2067 2077 American Nuclear Society 2004 10 P K Jain Y Gu J F Stubbins and Rizwan uddin Broadcasting nuclear engineering laboratories video and data in real time over the internet Proceedings of the ASEE Annu
6. browser windows are showing different shots of the laboratory live video shot of the experiment and displaying the data being measured in real time This extensive information of a real time experiment can be displayed on these screens for a large number of students to view Several modalities for an audio link between the remote computer lab and the experiment site including conference calling and an audio transmission feature built into the webcam are also available To test one particular webcasting of an experiment the Centra web based meeting software 16 was also installed at the transmitting and receiving locations Use of this specific package enables bi directional audio and video communication to from the webcasting and receiving sites Choice of devices and software for this project was dictated by several goals and limitations In the model of the e Lab presented here LabVIEW was chosen as the base platform to provide the link between the experiment computer and the internet due to its embedded remote broadcast ing feature This feature allows any PC or laptop to become a data acquisition device as well as a web server without installing any additional software Moreover LabVIEW platform can easily be customized and made interactive as per the needs of the user In choosing the appropriate web cam the cost of the equipment as well as the resolution and streaming capabilities were the 4 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION
7. eport the development of a real time distance lab module that is being implemented in the Department of Nuclear Plasma and Radiological Engineering at the University of Illinois This internet based system allows remote personnel to watch the experiments and personnel performing the experiments acquire data and interact audio and video with on site personnel Data are broadcasted in real time in text as well as graphical format the same format used to display the data on site Moreover use of LabVIEW s remote front panel feature allows communications between the local lab and remote client so that remote client if permitted can obtain part or full control of the experiments Keywords Web cast e Lab Internet LabVIEW Distance education SUMMER 2008 1 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet INTRODUCTION The internet and world wide web have become indispensable parts of modern day education supplementing existing classroom education and also supporting web based courses and programs Though the distance learning programs continue to expand real time broadcasting of engineering laboratory courses is still in its infancy In addition for expensive and or dwindling experimental facilities such as teaching training and research nuclear reactors distance lab modules may be come an economic necessity 1 While distance lab modules jus
8. he user interface is created by dragging and dropping controls and indicators from the programming palette which are respectively the interactive input and output terminals of the VI Controls are knobs pushbuttons switches dials and other input devices Indicators are graphs LEDs and other displays Every front panel control or indicator has a corresponding terminal on the block diagram The block diagram represents the source code in a graphical format In addition the block diagram contains functions and structures from built in V libraries All the nodes in the block diagram including control and indicator terminals functions and structures are connected showing the flow of information and control When a V is run the block diagram is executed and the data is passed from one station functions or indicators to the next as in a traditional computer program where they are used in the functions on the diagram and the results are passed to yet other functions or indicators 15 SUMMER 2008 9 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet A software called Universal Library UL for LabVIEW is provided with the data acquisi tion DAQ device used in this experiment USB TEMP This software allows the development of customized LabVIEW applications compatible with the DAQ hardware To read the temperature inputs via LabVIEW an example
9. ile Edit View Favorites Tools Help a Q wx 6 x a CA JO search She Favorites Kz B eS jw m a 3 Address http 128 174 163 100 sample lvahuge html yo inks Google Search g PageRank QY 11 blocked 8 Check Autolink AutoFill Ea Options 6 6 minutes saved Image Size Small Medium Large TLR O Figure Video 10 A view of the webcast of the heat transfer lab as seen in a web browser at the remote site Remote user can zoom tilt and pan using the scroll bars on the bottom and right side of the window respectively Figure Video 10 shows a webcam view as seen in a web browser at a remote site For this particular camera in addition to pan tilt zoom control remote user can also adjust the background light The two phase boiling heat transfer e Lab has been installed and tested by conducting the experi ment webcasting it and having a set of students participate in the lab remotely via internet Along similar lines a gamma ray spectroscopy experiment has also been modified and tested for online e Lab In this experiment gamma ray energy is estimated locally and at remote site by measuring voltage produced in the Nal TI scintillation detector A view of the detector and other apparatuses as seen in a web browser on the monitor of a remote computer is shown in Figure 11 a Of course remote user can zoom in out to see any specific component in more detail Fig
10. is fed into a chart utility box to generate the graphs Various inputs such as BoardNum LowChan and HighChan specify the board number and first and last channels to scan respectively Units for temperature output can be set from the Sca e button with options available for Celsius Fahrenheit and Kelvin Webcam Canon VB C50i PTZ Network Camera 20 is used as the primary webcam for video moni toring and web casting This camera is capable of transmitting videos at up to 30 frames per second see Figure 9 a The camera s built in web and FTP server supports 50 viewers to simultaneously access the system With a 26x optical and 72x digital zoom in feature and 200 panning 120 tilting feature remote client can virtually access any part of the real time experi ment In addition this camera offers two way audio capability when Canon VB EX50 Multi Terminal Module is added see Figure 9 b With this module microphone and speakers can be connected to the camera allowing remote monitoring of audio at the experimental site or even two way communication between the lab and the remote site Two additional secondary webcams are also installed in the lab 10 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet HT Lab VI Hek Ele gdt Operate Tools Browse Window Help NPRE S51 Heat Transfer Objective This laboratory exercise demo
11. lthough current emphasis has been on observation data retrieval and analysis of particular experimental sequences that illustrate or reinforce some basic physics or engineering concepts future developments may also allow some limited control actions from the remote sites With LabVIEW inter net and computers readily available in most laboratories web casting of these labs over the internet to sites around the world can be achieved with a modest cost This prototype e Lab will facilitate reaching a broader audience and enhance distance education programs More importantly it is hoped that the details provided in this paper will help in the development of other similar e Labs ACKNOWLEDGEMENTS This work is supported in part by a DOE INIE grant Support from the College of Engineering at the University of Illinois at Urbana Champaign under an Innovations in Teaching grant is also acknowledged Authors wish to thank Prof James F Stubbins and Prof Barclay G Jones for their support and encouragement Assistance by Qi Lou Stefano Markidis Mike Sorice J Tia Taylor and Hsingtzu Wu is greatly acknowledged and appreciated REFERENCES 1 Y Gu and Rizwan uddin Real time distance Lab via LabVIEW and webcam Trans ANS Vol 92 2005 2 C Rohrig and A Jochheim The virtual lab for controlling real experiments via internet Proceedings of the 1999 IEEE International Symposium on Computer Aided Control System Design H
12. mplementation methodology is described in detail for a couple of experiments and it is hoped that this paper could be a valuable resource for educators who want to develop similar concepts for other experiments METHODOLOGY The distance lab module has four components local lab LabVIEW 15 one or more webcams and remote client Figure 1 shows a schematic diagram of the system Local lab includes ex perimental setup at the local facility and personnel carrying out the experiment LabVIEW is a software package marketed by National Instrument NI that is capable of signal acquisition analysis and data presentation It also has built in capability to webcast data in graphical and other formats Moreover LabVIEW also allows communications between the local lab and remote client so that remote client can be given full access to control the experiment Webcams are now go LabVIEW 3 eer Far Local Lab ae k 5 2 A Network Cam fe p ns Figure 1 A schematic diagram of the distance lab SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet well known and even good quality webcams are increasingly becoming affordable so that even multiple webcams can be installed in a single lab Remote client may be any computer con nected to the internet Arranging the
13. nstrates three major categories of Kquid sold heat transfer convection nucleate boing and fim boing Discussion Heat transfer to boling bquid is a considerably more complex phenomenon than ordinary single phase convection no phase change With phase change a number of additional physical variables must be added to the Ist above Some of these variables are the pressure of the liquid the surface tension the latent heat of evaporation and the physical properties of both liquid and gas vapor phases The objective of this session is to acquire a physical understanding of the phenomenon that are characteristic of the various regimes of boling This understandings to be obtaned from visual observations and from careful examination cf the expermenta data The study wil be concerned with pool boling that i boling due to the presence of a heated surface in a poo of saturated kad without Forced convective flow Saturation means that the lquid phase is presently at the saturation temperature Energy transferred to the baud forms Vapor and appears as bubbles on heated surface These lave the surface and enter the quid regon Ble Edt Operate Tools Browse Window Help K e elu Ain Instruction Sheet Experiment Department of Nuclear Plasma and Radiological Engineering University of Ilinois at Urbana Champaign NPRE 451 Heat Transfer e Lab Fthermocouple 1 suf sed 3661 TEJ HAv ea kaa Katies Kan Maa b
14. opper ball with two thermocouples left ball heated to nearly 420 C center heated ball submerged in near boiling water right where A is the heat transfer area and A7 is the difference between surface temperature and the fluid bulk temperature 18 As the hot sphere is dipped into the pool of water it first leads to film boiling where a vapor film can be clearly distinguished around the sphere see Figure 5 a Heat transfer rate during this stage is low Thus sphere s surface and inside temperatures slowly decrease with time When the vapor film starts to break down and water comes in contact with the hot sphere there is violent and vigorous boiling see Figure 5 b Consequently there is rapid heat transfer and over a few seconds the temperature drops significantly By repeating the experiment with a copper and then with a steel ball the relative difference between the surface and inside temperature indicates the difference in thermal conductivities of both the materials Besides the post experiment analysis of data simu taneous observation of different stages of boiling a window showing the experiment and associated thermocouples readings a window showing the thermocouple data being measured is an instructive experience of this experiment which makes it an excellent candidate for this prototype e Lab Figure Video 5 shows different stages of boiling Data Acquisition Instrument The experiment uses a USB based tempera
15. program TInScan V1 supplied with the UL package was modi fied This V reads a range of temperature input channels and returns the temperatures to an array in degrees which can be displayed graphically and webcasted Moreover a feature called remote front panels allows users to view and control the VI front panels remotely from a web browser without any additional programming The user can switch the display between different quantities being measured A remote user connected via the web can run an application or check progress Additionally several users at different locations can access the V simultaneously and view live updates to the front panel window through any standard browser However for obvious reasons only one client can control the front panel at a time 15 Figure 7 shows the front panels of the V for the boiling heat transfer experimental set up Figure 7 a shows a simple schematic diagram of the experimental setup and a brief description This feature can be used to develop description of the lab and reading material for lab preparation By clicking on the experiment tab in Figure 7 a one can switch to Figure Video 7b which shows the data being measured in the experiment This window shows the surface and near average temperature being measured Block diagram corresponding to this lab is shown in Figure 8 Arguments on the left side of Tin Scan box in the block diagram represent different inputs while temperature output
16. ptions for example sensor type for each channel are programmable with the software provided with the device Moreover its calibra tion utility tool automatically calibrates the device minimizes thermal drift and retains the rated accuracy of measurements LabVIEW Laboratory for Virtual Instrumentation and Electronics Workbench LabVIEW is a graphical programming language developed by National Instruments with built in tools designed specifically for measurement and control It is similar to traditional programming languages like FORTRAN or C it allows variables data types loops sequencing 8 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet use sii EJ o _ MBccuccoceccoseecs i y Figure 6 USB TEMP a plug and play device for temperature measurement Signal from the two thermocouples is the input to this device while the output is transmitted through a USB connecting wire to the PC 3 structures etc Moreover it provides very efficient and up to date tools for acquiring analyzing and presenting measured data Each interface or window in LabVIEW is called a Virtual Instrument or VD which is a primary building block of the application and allows modularization of the code for efficient design and handling Each V is composed of two main components the front panel and the block diagram The front panel of t
17. ri s Srey a o gt Ted ov Advances in Engineering Education an SUMMER 2008 Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet PRASHANT K JAIN Department of Nuclear Plasma and Radiological Engineering University of Illinois at Uroana Champaign Urbana IL YUXIANG GU Department of Nuclear Plasma and Radiological Engineering University of Illinois at Urbana Champaign Urbana IL RIZWAN UDDIN Department of Nuclear Plasma and Radiological Engineering University of Illinois at Uroana Champaign Urbana IL ABSTRACT Internet extends the reach of existing laboratory and training infrastructure to beyond the walls of such facilities Though nothing can replace the hands on experience in a laboratory a carefully developed web based digital lab may be the next best thing In some cases there may be benefits associated with a distance laboratory that are usually not available in a conventional lab Due to ra diation environment and very high cost of some labs for example nuclear research reactors there exists a need to develop web based systems that can access the experiments being conducted in a radiation measurement lab or the reactor and make it available in a virtual laboratory These systems should be inexpensive easily installable allow interactive audio video communication as well as remote access or sharing of data in real time We here r
18. ring to measure the heat transfer coefficient before during and after film boiling has been modified for the e Lab demon stration and tested The purpose of this experiment is to provide physical understanding of the phenomena that are characteristic of various boiling regimes 17 and to measure the heat transfer coefficient in different boiling regimes Figure 3 shows a picture of the test bench showing the kiln on the right In the first stage of the experiment a metal ball is heated to nearly 420 C and then submerged in a pool of near boiling water Different stages of this experiment are shown in Figure 4 There are two thermocouples embedded in the sphere One is placed very close to the surface of the sohere and mea sures the surface temperature 7 The other is located at a selected radius inside the sphere and measures the inside temperature representative of sohere s average temperature Lene This value when measured as a function of time can be used to determine the heat flow rate from the sphere Q given by d avg Q pC pV dt where V is the volume of the sphere The heat transfer coefficient h is obtained from Newton s law of cooling which is Figure 3 Boiling heat transfer experiment set up 6 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet Figure 4 Experimental procedure Steel or c
19. se four components into a virtual lab requires compatibility between hardware and software For example the experiments must have data acquisition hardware capable of com municating with LabVIEW which must have the data acquisition driver installed LabVIEW applica tions are usually experiment specific To webcast the data the computer running LabVIEW must be connected to the internet Different kinds of web cameras are now available Most desirable is a web camera that is controllable zoom pan through a standard web browser even by the remote user The camera should have fast frame rates high resolution large bandwidth and preferably a built in microphone Internet ready webcams are also available that do not need a computer to be connected to the internet The remote client needs a computer with multimedia and internet It needs installation of some runtime engines which are available free of cost to capture and display the live camera shot and to display the LabVIEW web cast In order to test the capabilities of the e Lab at the receiving end Department of Nuclear Plasma and Radiological Engineering at UIUC fittp www engr uiuc edu ne p has also developed a computer lab equipped with two large screen monitors and several computers It is also equipped with internet ready web cameras that are controllable from remote locations with zoom pan tilt capability Figure 2 shows a picture of the two large screen monitors mounted on a wall Web
20. t like distance courses may never be as meaningful as their in lab counterparts it may be possible to make them somewhat realistic Moreover in some ways distance labs or e Labs with their large screen monitors and zoom pan capabilities associated with the broadcasted video might actually provide a more meaningful experi ence than a passive presence in the back of a crowded laboratory Somewhat similar to the experi ence of watching a soccer game on wide screen HDTV with replays from several different angles and multiple windows vs watching it live from the top of a large stadium Additionally embedded multimedia features along with interactive simulations may also allow remote users to visualize and grasp different dynamic concepts which in turn can promote active learning In a way these digital tools and features like multi media interactive features large screen with multiple windows and replay capabilities are meant to enhance our understanding of real phenomena and thus can and should be used even in the hands on laboratories And it is in this sense that the in lab experience can always be enhanced to have an edge over the distance lab Recently several efforts have been made towards the development of web based laboratories Rohrig and Jochheim 2 reported a Virtua Lab to remotely access control engineering experi ments at the University of Hagen Germany The approach is based on client server architecture written in JAV
21. ture measurement device USB TEMP 19 from Measurement Computing Corporation that provides eight differential tempera ture input channels and supports all of the common sensor type thermocouples RTDs thermistors and semiconductor temperature sensors A picture of the device is shown in Figure 6 It provides flexibility in temperature measurement as each channel can monitor any of the supported input types Thermocouples signal is fed into the USB TEMP which is then connected to the PC via a USB port SUMMER 2008 7 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet Figure Video 5 Different boiling regimes observed during the heat transfer experiment a film boiling b vigorous boiling after the vapor film starts to break down This device also has an open thermocouple detection feature which lets user detect a broken thermocouple Moreover an onboard microprocessor automatically linearizes the measured data according to the sensor category In addition it is a standalone plug and play module which draws power from the USB cable i e no external power supply is required 19 USB TEMP has its own driver software which needs to be installed on a computer before it can be used for data acquisition When the device is connected for the first time the computer auto matically detects and installs it All hardware configuration o
22. uide 2005 20 Canon Inc VB C50i PTZ Network Camera User s Manual 2005 AUTHORS Prashant Jain is a doctoral student nuclear engineering at the University of Illinois at Urbana Champaign He is interested in developing computational tools to enhance engineering education Yuxiang Gu is a doctoral student nuclear engineering at the University of Illinois at Urbana Champaign His interests are in computational methods and CFD 16 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet Rizwan uddin is professor of Nuclear Plasma and Radiological Engineering at the University of Illinois at Urbana Champaign He is interested in the use of technology to develop experiential learn ing tools for teaching enhancement and improved retention He holds a PhD in Nuclear Engineering from the University of Illinois Address Correspondence to Rizwan uddin 216 Talbot Lab 104 S Wright St University of Illinois at Urbana Champaign Urbana IL 61801 Tel 217 244 4944 Fax 217 333 2906 E mail rizwan uiuc edu SUMMER 2008 17
23. ure 11 b shows a computer remotely accessing the webcasted window of the voltage fluctuation data SUMMER 2008 13 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet LiveApplet Large Windows Internet Explorer EEX GO E hp28 174 163 100 samgelvahuge himl a ves 2 ea Fie Edt View Favorites Tools Help Google M C search DB Kpreblocked AF check Autotik Ato Options P Wl A wv search web 2 Er myweb Gamal myYahoo Games YBNCAAHOops Fomusic E answers Personals signin P PStiveappiet Large i gt D m page G Tools Sample of Viewer for Java LiveApplet Image Size Small Medium Done Interet Ko e b Figure 11 Data being acquired in the gamma ray e spectroscopy lab shown in a web browser at the remote site a Screen capture of video web cast b Voltage data acquisition on a remote computer 14 SUMMER 2008 ADVANCES IN ENGINEERING EDUCATION Broadcasting Engineering Laboratories Audio Video and Data In Real Time Over the Internet CONCLUSIONS Using off the shelf technology a boiling heat transfer e Lab has been developed that can be a prototype for other similar experiments The e Lab successfully achieves the goals set out for such an exercise It provides a rather realistic experience of the experiment to the student at the remote site A
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