Real Time DAQ acquisition and Processing

[Lee Stanley]

Hi,

Is there anyway to use session based DAQ to capture real time and process signal simultaneously? I managed to acquire signal continuously but is there a way to log the data as well as to process the data and plot in different plot at the same time?

Acquiring Code

s = daq.createSession('ni');
s.addAnalogInputChannel('dev2', 0:1, 'Voltage');
set(s.Channels,'Range',[-10 10]);
s.IsNotifyWhenDataAvailableExceedsAuto = true;
lh = s.addlistener('DataAvailable', @plotdata);
s.IsContinuous = true;
s.startBackground()
while s.IsRunning
pause(0.5)
fprintf('While loop: Scans acquired = %d\n', s.ScansAcquired)
end

Plot Data function
function plotdata(src, event)

plot(event.TimeStamps, event.Data)

end

Summary: How to log the event data and time as well as to process the data at the same time to be plotted in another new plot?

Thanks.Any advice?

Cheers,
Stanley

[Free]

"Lee Stanley" wrote in message <knl1jn$166$1...@newscl01ah.mathworks.com>...

Hi Stanley,

same problem here. Any Solution so far?


Cheers

[moria]

hello,

I am working on my school project and for that I need to aquire data from NI sampling card using session based daq. The data is a heart rate pulse signal and I want to display the signal in real time, but after filtering the signal, in my GUI. Plus I need to save the data for future use. I saw that you can log the data with the listener but then I cant seem to figure out how to plot it at the same time. I succeeded on plotting the raw signal but without the filtering.

Please someone help!