Acquire data using message queues

[Ben-Da-Nee]

Hello!

I'm new to labview and I would like some help on a program I'm working on.

I need to acquire data from a queue. The queue has to push start or stop message/ audio and data should be acquired based on whether you receive start or stop. How do I go about this? Should I use a producer/consumer loop? 

After acquiring the data it will be analysed and logged. The idea is to get audio/vibration measurements. I'm using the queue to push start/stop temporarily. 

Thanks for your help!

Maddy

[crossrulz]

Could you post your code so we can better understand your setup?  It sounds like you are already setup as a Producer/Consumer, which is why I am confused.

[Ben-Da-Nee]

Hi crossrulz

I don't have a code yet. Someone suggested using a producer/consumer loop. Do you have any example programs where you acquire data from a queue and log it. Sorry, I'm still figuring my way around LabVIEW.

Maddy

[crossrulz]

Ok, let's take a step back.  What is the goal of your program?  Where is the data coming from?  How is the data being taken?  What format do you want the data saved?

[Ben-Da-Nee]

The goal of the program is to collect audio samples and log them. I'd like to include a graph/waveform to show the samples as they are acquired.

The data is coming in through a Plc to a cdaq(9132) and it has to be logged in a spreadsheet. The parameters for the audio samples haven't been set yet. I need to set up the data acquisition part first and I'm having trouble with coming up with the code. 

Maddy

[Ben · Accepted solution]

Are you using LabVIEW 2016?

If so, in this thread I shared what will be the new look of the producer/Consumer when making use of Channels.

I latter when on to share what a Channeled Message Handler

They may help you get started with the new channel wires and the design patterns that best meets your needs.

Ben

[Ben-Da-Nee]

Thank you Ben! I understood the part about using channels instead of queues, although the code itself was a little too complicated for me. I need to come up with a data acquisition vi whose input is in the form of a 2D floating point array. Could you help me with a simple frame? I have difficulty starting a code, I'm a hardware engineer and I'm really trying to get better at LV.

Thanks!