boolean arrays

[Halemani]

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@ThomasV wrote:

Best way to count how many elements of a boolean array are true :

[boolean array] --------[Boolean to (0,1)-function]-------------[Add array elements-function]

(change boolean to zero's and one's, and calculate the total sum of all values)

Thomas.

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But Thomas we have to count for each individual boolean and not the whole array. Then if three booleans are true then they sum up to 3 which is not what we want. If a single boolean is 3 times true, then reset the whole array.

[Benji..]

Hi Halemani, and thank’s again for your example..

We are getting closer..

Let me explain more to you..

This vi should monitor a building from 23.00 until  07.00 in the morning.. ( Like an alarm system.) Either I need to put it in event structure to watch change in values in the array, or I need to have a vi with a while loop running all the time..

Let me explain more to you..

Each detector can stay active/high for more than 1 second, and another only for about 200ms,  it depends on what activity there is in the room.. So let’s say you put a Boolean array in a while loop, and push one button.. lets say you activate element nr. 5.. it should read 1.. leave it there, and activate element nr. 2.. it should read 1 too, switch off element too.. it should still read 1, and the next time you activate element 2 it should be nr 2..

Element nr. 5 that you activate earlier should still show 1 if it’s still active.. So.. the first element that reach a specific number 3, should reset the array, but the whole vi still need to run and watch the building.. I don’t know if you understand better, but I hope so..

I have study the dsc alarm vi’s, but I need to involve an error margin, that’s why I need some pulses from each detector to be sure that there is somebody in the room..

[ThomasV]

I am sorry,

If I understand correctly, you want to detect if a boolean is true for 3 successive read-operations.

This is then what you need :

[Halemani]

Benji I got your point. But you have to figure out the programming part because I can't see the whole picture right?
What I gave you was the reseting part. You have to take care of the timing cases.
Why each element has a timing constraint?

[daveTW]

Hello Benji,
I made this VIs for you. I hope they do what you need. You have to run the Wrapper- VI.



This is the BD of the core- VI, where set Detectors are counted up in the Alarm Counts- Array.

greets, Dave


Message Edited by daveTW on 04-28-2008 02:17 PM

[Benji..]

Hi Dave...

Thank's a lot.. I will try this out..

Is it possible for you to convert the vi you attached to LV8.0 ??

Regards from Benjii

[Mathan]

Hai Benji,

This is in LV8.0

[Benji..]

Dave...  THANK you...

I have tested your vi a little bit, and it work's great..  It worked just the way I wanted..

Thanks again.. Very best regards  Benjii..