Real-time Data Acquisition Using NI-USB 6009

Hello everyone!

I have a project using NI USB-6009 and an Incremental Rotary Encoder (Megatron SPNT Series). I would like to do a real-time masurement (e.g., calculating angular velocity) and have seen few examples through MathWorks video. The problems are, first, another type of NI device was used during the examples. I was just wondering if it is possible to do the real-time masurement using NI USB-6009? Second, if it is possible, can I plot the square waveform to do further calculation?

I really appreciate your help

Regards

Muhammad

Answer 1

[Anshuman]

Hi Muhammad,

To perform real-time measurements with the NI USB-6009 and an Incremental Rotary Encoder, you can use MATLAB's Data Acquisition Toolbox. You can follow the following steps:

1. Use the 'daq.createSession' function in MATLAB to create a data acquisition session object. Configure the session to specify the input channels, sampling rate, and other relevant settings.
2. Use the session object to define the measurement task. This involves specifying the type of measurement you want to perform, such as measuring the voltage or frequency from the Incremental Rotary Encoder.
3. Use the 'startForeground' function to start the data acquisition and acquire the data in real-time. You can then process the acquired data, calculate the angular velocity, and perform any further calculations or analysis as needed.

Regarding plotting the square waveform, once you have acquired the data from the Incremental Rotary Encoder, you can use MATLAB's plotting functions, such as 'plot', to visualize the waveform.

Hope it helps!