LabVIEW_USB_DAQ_DATALOGGER_instructions - LabVIEW -...

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LabVIEW - Instructions for Building a Virtual Instrument: Data Logger Author: John M. Cimbala, Penn State University Latest revision: 22 January 2008 Introduction LabVIEW is a graphical programming language that was first developed in 1986. It combines data acquisition, analysis, and presentation tools into one software program. The goal of this exercise is to provide you with what is most likely your first exposure to LabVIEW programming; namely, the construction of a LabVIEW program, or virtual instrument (VI). Hardware setup The data acquisition hardware used in this exercise is a National Instruments model NI DAQPad-6015, which interfaces to the computer through a USB connector. It has 8 differential analog voltage inputs, 16-bit resolution, -10 to +10 volts range, and a maximum overall sampling rate of 200,000 samples per second. It was selected for ease of integration with LabVIEW, which is also made by National Instruments. The USB device is one of the many different types of data acquisition devices that can be used. Another common interface is a PCI-slot data acquisition card. These cards can be plugged into PCI-slots on the computer’s motherboard, much like a sound or Ethernet card. Virtual instrument to be created – a simple data logger In this exercise, you will create a simple data logger that acquires voltage measurements from four analog input channels and writes them to a text file that can later be analyzed in Microsoft Excel. Instructions Launch LabVIEW and become familiar with the layout 1. Start LabVIEW (Start >> All Programs >> National Instruments LabVIEW OR Start >> Programs >> LabVIEW , depending on the computer). 2.
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LabVIEW_USB_DAQ_DATALOGGER_instructions - LabVIEW -...

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