How to create a type of "alarm" based on data time and acquired sensor system?

Hi all

I am relatively new to LabVIEW and have managed to create a VI that reads the data from the sensors voltage.  Each sensor outputs 2 voltage values and I treat these values in the form of 2 different values DBL.  I would like to be able to record each value of voltage as a base and then compare the readings of subsequent data with this base.  Once the base is fixed, I want a sort of "variable", defined as 'TIME' to be registered at the time the base voltage is recorded.

The alarm should take place (or whatever it is Boolean TRUE value, I guess) once the tension to know remains within certain limits for about 2 hours.  I know that I can compare the time system w / 'TIME' that the base voltage value has been saved.  If pressure readings are beyond these limits, I would like the value of base zero voltage and the time PERIOD corresponding system again.

I apologize in advance if this didn't ' describes my problem, but if someone could help me understand the best way to create this code, I would appreciate it a lot!

Thank you!


Tags: NI Software

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