how to keep that valve open for certain period of time and shut off automatically

[ajmartin]

godpaul,

Looking at the problem description (the ALL CAPS post) this sounds like a home work assignment.  Sorry if I am wrong, but I am curious.

Alan

[nathand]

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ajmartin wrote:

Looking at the problem description (the ALL CAPS post) this sounds like a home work assignment.  Sorry if I am wrong, but I am curious.

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Did you read through the whole thread? The poster made it clear that this is a school project, and I believe both Lynn and I took that into account in our responses.

[godpaul]

No, no homework for senior design class...

It's just a example I found in the forum and I personally think it may have something to do with our project, so I try to use my current VI skills to do the code to see what happen.

I just learned labview 3 months and still sturggles to master it well for our deisgn project. As a mechanical engineering student, I finally know what we learn from class may be not used in the real field... this project turns out to be entirely new for me but I dont complain just accept it.

You dont have to doubt my academic integrity.

[godpaul]

Hi nathan,

Lynn finally give me a right direction. 

Before that,  I just directly run into labview VI code , learn it for 3 month and try to put it into use right away, but it turns out it's not correct step. Since we discuss more, I gradually reveal what I did and had to let you know the requirement.AND you correct my mistake too. that is why i had no intention to post any project requirement but ask for help for VI code

[johnsold]

We are glad to help people learn LabVIEW and to help students learn engineering.  The one thing which most engineering programs have trouble teaching is that which is most important: design.  That is why senior projects are so important - they may be the only opportunity many students have to see what engineering is about.

Defining the problem, not in the terms used by the person requesting it, but in quantitative terms which can be used to guide and evaluate the design has to be done, first. And it is often the most difficult part. If done well, a good requirements statement serves as a road map for the design. Without it you may spend way too mcuh time doing interesting things which ultimately contribute nothing to the project.

Lynn

[ajmartin]

godpaul,

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godpaul wrote:

No, no homework for senior design class...

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Thanks, Sorry for butting in. I learn a lot from reading other peoples applications and problems. Reading from the start of the post it seamed "real world" , and I was interested in the discussion, then I saw the post that looked like a home work assignment. It is an interesting application.

Alan