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How to measure Pulse signals

Hello, Friends

 

I am interested in developing a data acquisition program from a sensor that gives a pulse signal. I would like that send me please some information about what VI’s I have to use inorder to began the acquisition and How I can measure the pulse frecuency. Some examples will be very excellent.

Please, write me. I will be very thankful

 

Pablo

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What are the charactersitics of the pulse? This determines the best way to measure the pulse.  Width, rise, fall time, voltage range, TTL, Analog, how noisey.....
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA
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Hello, Friend

I only am interested in knowing the pulse signal data acquisition. I have a flowmeter that give us a pulse signal as a water measure. I would not Know to say you the characteristics of that signal because I am developing the acquisition program in Labview and I have not used the sensor yet. Please help me. I don't know what I have to do to began to develop that program.  If you have examples with the reason of the VI and terminals used , It would be very nice.

Pablo

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You should be able to findout the output of the signal, is it an analog voltage or is this pulse a digital pulse (ie measuring TTL Width or some number of counts for a frequency changing pulse train)?  All this is either done with DAQMX analog in vis or counter vis.  You really need a clear picture of what the signal is before you can write code.  The code should be simple once you know your signal.

 

Paul

Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA
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Hello, Paul

The signal is a digital signal, exactly a pulse signal. The sensor give me 154 pulses per galon and I don't know how I can measure the frecuency of that signal. Do you have a way to resolve that problem?. Explain me please what kind of VI's I have to use. Some examples or tutorials or documents will be really very nice.

Plese help me

Pablo

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Probably TTL pulses the frequency depends on the flow rate.  Use a counter and use a frequency counter task, there are several examples that ship with labview.

 

Paul

Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA
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Hello Paul

Thank you for all. I will try to develop my program with your recomendatons.

Cheers

Pablo

 

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