LabVIEW

Products < Data acquisition < Software < Real-time analysis <

LABVIEW support is now available for the g.MOBIlab+ and the g.USBamp. It supports Labview 8.6 and allows to easily create custom signal analysis experiments.

The g.LABVIEWsupport allows acquiring biosignals like EEG, EMG, EOG, and ECG with LabView 8.6. Therefore the g.LABVIEWsupport block is copied into a LabView project and can be connected to any other available LABVIEW block for further signal processing. The project is just started and the amplifier device driver guarantees that the Labview is updated in real-time.

This Rapid Prototyping environment speeds up the development cycle dramatically and within a few hours the first real-time experiments can already be made. The g.LABVIEWsupport allows using all LabView standards and writing your own LabView based programs.

The g.LABVIEWsupport gives access to the specific hardware settings like analog channel selection, digital I/O lines, SD card streaming,... Just put the g.LABVIEWsupport in your LABVIEW program and start the biosignal acquisition and analysis.

Biosignal data can be visualized and stored directly to the harddisk in LabView data format.

The figure below shows the model for the usage with g.USBamp.

Highlights

acquire EEG, ECG, EMG, EOG data directly within LabView
wireless biosignal data acquisition with g.MOBIlab+ or over USB with g.USBamp
add graphically your own sophisticated data processing algorithms
benefit from the Rapid Prototyping environment for developing, testing and releasing your biosignal applications
no compilation of the Labview 8.6 is necessary for real-time analysis
use standards of Labview 8.6’s for online analysis
store data to a LabView file

Example g.LABVIEWsupport for the g.MOBIlab+:

g.MOBIlab+ transmits data via a bluetooth connection to your PC. In this case COM 14 is used for the transmission.

The example below displays the setup for reading eight analog input and eight digital input channels in a waveform graph. A LED array displays the status of the digital channels.

First select g.MOBIlab+ COM port where the device is connected to the PC or notebook and start the program.

Then select the channels to be acquired from g.MOBIlab+. The 8 digital channels can be used as input (channels 1 - 8) or output channels (channels 4 - 7) or can be disabled. Check the Testmode box to enable sending a sawtooth test signal from g.MOBIlab+.

The Waveform Graph shows the sawtooth signals with different frequencies on the different analog channels. The digital inputs blink from channel 1 to 8 in ascending order.

g.MOBIlab+ is also able to stream data onto a mini SD card. The SD card is inserted into the water protected battery compartment first.

Then start the Labview and with the channels to record check the Enable writing to SD card checkbox in the configuration dialog and enter as filename GMOBILAB.

g.MOBIlab+ is now streaming the data onto the SD card and is sending simultaneously the signals to the PC/notebook for visualization. After checking the signal quality of the biosignals press the Stop button. A dialog window appears which asks if you want to stop the data acquisition or if you want to disconnect the Bluetooth connection.

Click on Disconnect to keep on streaming the data onto the SD card but to close the signal transmission over Bluetooth. Now the subject can move freely around for 36 hours for home observation, sports activities or other physiological experiments.

LabVIEW disconnect from SD card streaming device dialog

When the subject returns from the experiment, startup the Labview again. The Bluetooth connection will be established again and the biosignal data can be visualized.

Finally stop the acquisition with the Stop button in the Labview. Now the SD card can be removed from g.MOBIlab+ and inserted into a card reader on the PC to analyze the physiological data. With a 1 GB SD card about 70 hours of data can be recorded.

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