Download Introduction to Labview and DAQ Cards in Experiment 2 | EGR 345 and more Lab Reports Engineering in PDF only on Docsity! Experiment 2: Introduction to LabVIEW and the DAQ Cards EGR 345 A Lab Section 01 Instructor: Prof. H. Jack Matt Doxey Tuesday, September 11, 2001 Purpose: The purpose of this experiment is to learn to use computers, which are equipped for A/D and digital inputs. Theory: Computers are able to read data at specific points in time. The data that will be collected in this laboratory experiment will be done with a Data AcQuisition board (DAQ). Each DAQ board has the capability of collecting analog or digital data. There are 12 analog and 24 digital pins on the DAQ for data communication. The pins are specified as either input or output. The voltage limitation on the DAQ board is –5V to 5V for analog inputs and outputs, and 0V to 5V for digital. In order to get information from the DAQ a program is needed. This program may come from a mass-marketed source or may be written in the LabVIEW program. LabVIEW allows the user to write specialized programs, not with code, but with symbolic function blocks. In order to learn how the function blocks are drawn and used the user should go through the provided LabVIEW tutorial. The tutorial led the user through the set-up and use of the Front Panel and the Wiring Diagram. The Front Panel is the display window within the LabVIEW VI (Virtual Instrument) that displays the output of the program. This output was in the form of charts, graphs, dials, or meters. The Front Panel also allows the VI to be controlled by the user via switches, dials, buttons, etc. The Wiring Diagram is where the inner workings of the LabVIEW program are displayed. This is where the user is able to build their program. Equipment List: 1. PC with LabVIEW software and PCI-1200 DAQ card-GVSU # 202830 2. Ribbon Interface cable-No Identification Number 3. PLC trainer board-Model # 325-1400 4. Signal generator-From above PLC trainer board 5. Digital multimeter (DMM)-EGR 06-00-01 Procedure, Discussion, and Results: 1. The LabVIEW tutorial was completed. This was an essential portion of the LabVIEW introduction. Without this tutorial the use and programming of LabVIEW would have been difficult at best. This should be completed prior to entering the lab for the most efficient use of the laboratory time. 2. The first LabVIEW VI was created. The purpose of this VI was to input analog data from a sinusoidal function generator. In order for the VI to work properly, the interface cable was connected from the PLC trainer board to the DAQ installed on a personal computer. The PLC trainer contained a signal generator. This was wired to the interface cable. Using the signal generator a low frequency sinusoidal wave was produced. Before any data was collected via LabVIEW the DAQ testing software was used to verify that the circuitry was operational on the PLC trainer. The VI was then used to collect the data produced by the signal generator. The data collected showed a sinusoidal signal with some
