Virtual Instrument Systems in Reality (VISIR)
Contents
1. Done p Figure 5 Instrument interfaces The virtual workbench is shown in Figure 6 The prepared exercises by the teacher are shown below the virtual workbench By clicking on any exercise the available components of such exercises will appear in the component zone Student is free to drag and drop the component by the mouse and wire the circuit by choosing the wire color The terminals of the instruments are shown on both sides of the breadboard Hold down and press Fe to rotata Use delete ip namove wires a aad DC Power Supply 25V COM 25V BV GND a 5 E a Function Generator b 2 B sa og 4 9 i 4 6 9 995 saa Gls re 2E SE EEEE a 4 B 1 13 305 WF 19 Mm m3 TEREE E EE Li wo F F st amp af amp E bog 15 14 Ca a amp 5 6 6 amp a sob ba LI 4 NR e E a ae ie e S824 Wire color TEES Oscilloscope b JE L Li 1 20 2 24 E amp 5 8 soo Fa Figure 6 Virtual workbench pang Eet be erre bb st he re B 30 32 Help Each instrument has its own interface for configuring it Access to the interface of each instrument is done by clicking its corresponding button below the virtual breadboard For example the interface of the power supply is shown in Figure 7 After wiring the circuit press the perform2. Help Figure 9 Connection error FAQ 1 Ilogin and enter the workbench but I can t see anything This could be because of the Flash plugin is not installed in your browser You can install it from http www adobe com es products flashplayer 2 Igetan error when click perform experiment This could be because of various reasons the connections are not correct VISIR restrict students to certain connection Make sure that the connections are correctly realized in the right holes of the breadboard Try it again it could be because of the extra load 3 The Oscilloscope is not measuring correctly There could be three possible reasons 1 you didn t clicked the button Perform experiment 2 The Oscilloscope is not in the run mode 3 The channels are not switched on channels are switched on from the buttons 1 and 2 in the interface of the oscilloscope 4 lam configuring the function generator and it doesn t let me insert 20Vpp or offset of 5V The maximum amplitude of the generator is 10Vpp The offset is related to the signal s amplitude thus it is not possible to introduce any signal beyond this value 5 want adjust the power supply to 12V but it doesn t bypass 6V Make sure you pressed the button 25V If not as maximum you only can introduce 6V
3. Electrical amp Computer Engineering Department DIEEC Spanish University for Distance Education UNED Virtual Instrument Systems in Reality VISIR higa ME om rd pm B i E loses BARRERA BANAL paran MAPA fanat BRRERERA 28888 DANG saaa ansaa Dite E Vet Oo oe ae Can CETELE cou PITTI TLLTTTTIT 2 CDI RB AS PET 088 BANG DOON teras KANAN Bathe DUNG DAAN attr Pee User Manual Virtual Instrument Systems in Reality VISIR is a remote laboratory for wiring and measuring of electronic circuits The VISIR Project was initially founded by the Signal Processing Department ASB at Blekinge Institute of Technology BTH in Sweden together with National Instruments in the USA as a supplier of instruments and Axiom EduTECH in Sweden as a supplier of education technical software and engineering services for noise and vibration analysis at the end of 2006 So far six universities have already implemented VISIR after Blekinge Institute of Technology FH Campus Wien for Applied Sciences in Austria Carinthia University of Applied Sciences in Austria University of Deusto in Spain Spanish University for Distance Education UNED in Spain Polytechnic Institute of Porto ISEP in Portugal pr Mr de Se Madras Institute of Technology IIT M in India As shown in Figure 1 the student logs into the Web page and design his circuit in a simulated environment Once he she clicks on the button perform expe
4. I TICs Power Supply RIPLECS OPENL Aman Figure 3 Student portal As shown in Figure 4 under the STUDENT all courses in which student enrolled are appearing Assigning students to a course is carried out by the teacher of such course Once the course is chosen click start Experimenting to access the lab workbench OpenLabs Electronics Laboratory a TA gia um Start gt About TICs Power Supply RIPLEC 5 Demo FAQ TEACHER Starting am experiment without a reservation gives you one hour of experimentation time COMA Experimenting without a reservation has lower priority and you will be kicked out if a reservation needs your seat STUDENT COMA Fundamentos de My ongoing reservations gt Ingenieria Electronica I No ongoing reservations 3 TICs Power Supply RIPLECS My reservations OPrEnNLama M pg Make mew reservation Br EETH S 2 HESS e racio Teacher scheduled reservations 2E No teacher scheduled reservations Figure 4 RIPLECS course portal As shown in Figure 5 the interfaces of the available instruments are shown Student are free to choose the interface with which he she is familiar However it is recommended to leave the default interfaces as they include are the functions available in VISIR Next click done to enter the virtual workbench Multimeter Fluke 23 Function Generate breadboard multimeter functiongenerator oscilloscope dcpower Clear
5. experiment button to see the results on the instrument interfaces Figure 7 Power supply interface An example of a mounted circuit can be shown in Figure 8 Hold down and presa R to rotaba Lise delete t ramowe wires ke DC Power Supply Oscilloscope m chi aaa wo k P d X i E a oc TETE S W amp ii F B B B B L LI f LI amp a B DI LI amp amp Li LI B SEE Ho ee en ee oo ee bH ph p E aa AA oSB P SE ae 96 P o WeR ER E m E P E 9 NG t 9 E m d m B Gd 4 55h E EEG MF kb MOA 9 S8 PB PB 4 Boc F G pa mo h5 E E a k G d s Ro 9 U cu E TETTETETT EE m e w Sa O a a a GB SG o3 2B 30 32 T 4 18 20 2 lg 16 Function db Perform Expesiment Brea Figure 8 A simple example of a resistor measured by a multi meter If all the connections are correct the results will appear on the interfaces of the instruments and if not an error will appear as shown in Figure 9 Connection error Error Close The circuit cannot be constructed Either it is unsafe or the current set of rules validating the circuit can t find a suitable solution Hold down and press R to rotate Lise delete to ramova wires Wire color DC Power Supply 20 COM 25V 6V Kk GND B Prepared experiments
6. riment his her design is transmitted to the measurement server in order to be verified before being transmitted o the equipment server for execution on real equipment The instruments consists of a PXI platform Oscilloscope multi meter Power supply and function generator connected to a relay switching matrix in which the components are connected HTTP HTTP XML XML BEES Ls TCP IP ERE npe Software del Servidor de Medidas Servidor de Equipos Servdor Web Visual C LabVIEW v Apache y i 1 zm E ume TCP IP Base de Datos de cs cari MySQL Plataforma PXI Matriz de conmutacion php and Flash Servidor de Equipos Figure 1 VISIR operation cycle In order to Access VISIR enter the following URL from any Web browser http visir ieec uned es and click on login in order to enter your username email and password previously provided by the teacher Figure 2 OpenLabs Electronics Laboratory MAIN MENU Login EIS mmm Start About Demo OPENLAB a Eee QU E If this is your first visit you will have to activate your account Figure 2 Access Portal You will see under STUDENT the courses in which you are enrolled or you are granted access Figure 3 OpenLabs Electronics Laboratory MAIN MENU Logout PH E Start About Demo Welcome VISIR UNED FAQ TEACHER COMA STUDENT COMA Fundamentos de Ingenieria Electronica
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