I am trying to derive the kWh from the sun's radiation using a Kipp&Zonen CMP11.
I have sampled readings from the CMP 11 (which is in Watt per square meter) using an agillent mux. Now I have to integrate it over the accumulating time to get the Watt-hour. Which function can I use? Can I use the Time-Domain Integration vi SUM[X(dt)]?
I forgot to mention that I am doing real-time sampling and accumulating the kWh continuously.
I tried the Integral (Sum[Xdt]), also in the math palette, and seemed rather straight forward to implement. I have not seen anyone use this vi for this purpose, perhaps its a new feature in Labview?
I am not certain of how to use the Numeric Integr VI for the same purpose. What do I use for dt (interval size)? The sampling period?
You said you are doing real-time sampling and accumulating the kWh continuously.
Do you mean point-by-point? That is, every time you get a sample data input, you want to calculate the integral?
If so, you can use Integral x(t) PtbyPt.vi, which is in Signal Processing >> Point By Point >> Integral & Differential PtbyPt palette.
How were you able to take measurements with your CMP11? I have a CMP3 and am having difficulty reading the microvoltage created with my compactdaq. would you mind sharing your block diagram?