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National Instruments: Labview Advantages And Disadvantages

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National Instruments (NI) LabVIEW is a graphical development environment for creating flexible measurement, and control applications quickly and at a nominal cost. LabVIEW enables engineers and scientists to interface with real world signals, process data for useful information, and share results and applications. LabVIEW programs are called virtual instruments (VIs), because their appearance and operation imitate physical instruments, such as oscilloscopes, signal generators and multi meters. LabVIEW comprises of a comprehensive set of tools for acquiring, analyzing, displaying and storing data as well as tools for troubleshooting (Elliott et al 2007).

2.2.1 Software Description

Two basic components in LabVIEW are: the front panel and …show more content…

Objects or icons can be chosen from the Functions palette and they are connected with virtual wires to pass data from one block to the next. These blocks perform simple arithmetic functions to advanced acquisition and I/O operations.

2.2.4 Advantage of LabVIEW LabVIEW has significant advantages when compared to traditional development tools.
 Empowers a larger group of users to develop their own solutions.
 Completes the entire application without the addition of more complicated development tools.
 Simplifies complex development tasks with powerful add-on tools for tasks such as data analysis and visualization, report creation, and database connectivity.
 Ensures successful development through National Instruments support services.

2.2.5 Biokit Physiograph Unit In ECG signals, instrumentation plays an important role, since signals generated by human body are very low in amplitude (Islam et al 2012). The Biokit physiograph system is helpful in capturing and analyzing Biomedical Signals like ECG, EEG, EMG, Pulse etc. Figure 2.1 shows the layout of the Biokit physiograph …show more content…

DAQ typically involves acquisition of signals and waveforms and processing the signals to obtain desired information. The components of data acquisition systems include suitable sensors that convert any measurement parameter to an electrical signal and conditioning the electrical signal. The conditioned signal can be acquired by data acquisition hardware.

Acquired data can be displayed and stored on a computer either using LabVIEW or any other vendor supplied software. Custom displays and control can be developed using various general purpose programming languages such as C, C++, FORTRAN, Java. LabVIEW offers a graphical programming environment optimized for data acquisition, and comprises of built- in graphical tools and libraries for data analysis.

2.2.5.3 NI-DAQ BNC2120

A DAQ system converts a PC into a measurement and monitoring system. The acquired analog signal is digitized using analog to digital converters to enable interface with the computer. For this purpose, a terminal block and a DAQ device NI-DAQ BNC2120 are used. Before installing the DAQ board, LabVIEW and NI-DAQ are installed. NI-DAQ is a driver software that is used to communicate with NI's DAQ device and allows interface between LabVIEW and DAQ

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