calculating the volume

[Mike227]

Hello,

I would like to calculate volume of a liquid infused/withdrawn from a syringe pump. I will know the rate and time, but here's my volume formula:

Volume = RATE * (TIME(1) - TIME(0)) + PREVIOUS VOLUME

So I want to take the rate and multiply it by the difference of the original and previous times and then add the previous volume.

[CCornish]

You can either use a state machine and Shift Registers for "memory" to keep track of the previous result, or

You can use feedback nodes to send the result data back to the beginning of the formula.

[crossrulz]

Use shift registers to hold your previous time and volume.

[Mike227]

Would ya'll be kind enought to maybe show me an example?

Thank You,

Mike

[nyc_(is_out_of_here)]

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@Mike227 wrote:

Would ya'll be kind enought to maybe show me an example?

Thank You,

Mike

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Maybe you should start thinking about taking the free online tutorials hmmmm?

http://www.ni.com/white-paper/5241/en

[crossrulz]

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@Mike227 wrote:

Would ya'll be kind enought to maybe show me an example?

Thank You,

Mike

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You mean my link to the video wasn't good enough for you?

Here's one for you to play with.

[Mike227]

Oh sorry! never saw the link.

Yea i will go ahead and mess around with it some. if i have any questions than i will post.

Thanks!

[Mike227]

ahh i'm still having some trouble. I looked at the videos and read the tutorial. My program looks pretty complex already. attached is my code.

I want to calculate the volume by using the rate multiplied by the time (ex: T(1)-T(2)) + the previous volume.

I want to use the seconds in the timestamp that I already have in my program

[crossrulz]

Ok, so where are you stuck?  What is it that you don't know how to do?

[Mike227]

I want to calculate the volume by using the rate multiplied by the time (ex: T(1)-T(2)) + the previous volume.

I want to use the seconds in the timestamp that I already have in my program