topic Re: Sending SMS using labview in LabVIEW

Sending SMS using labview

Ajtimstoj — Wed, 30 Nov 2011 12:25:58 GMT

Hi
I need help, in my Vi code the message are send every 5 second and this is my problem.

I want to send only one message if weight are greeter then set in box weight, and if i set a new number greter then also must send only one message.

And my second problem are when receive SMS to my cell, the message looks: are: 502,00000
The word weight are missing and five zeros I do not know where they come from .

Thanks in advance for any help

Re: Sending SMS using labview

smercurio_fc — Wed, 30 Nov 2011 14:56:02 GMT

It does not matter whether you're sending an SMS message or hitting a kumquat. You need to have a flag that is set once the message is sent. You look at the flag to determine if a message has already been sent. You reset the flag once the weight falls below your target. A simple Boolean will work as a flag. You can use a shift register or a Feedback Node.

Other comments:

Do not place the VISA Configure Serial Port and VISA Close inside the loop. These belong outside the loop - you do not need to reconfigure the serial port each time you send a message.
Do not use such a large time delay. It effectively prevents you from quickly stopping the VI. If you press Stop while the code is inside the inner case you have to wait 10 seconds before the VI actually stops. If you want to check the weight once every 10 seconds, then use a small loop delay and use the Elapsed Time to see if the required amount of time has passed.
I don't quite understand why you are using a combo box for the message prefix. Why not a simple string control?

As for your second problem: the extra zeros are due to the Format Into String function. You did not provide an explicit format string, so it's giving you a default conversion. Please read the LabVIEW Help on the Format Into String function for various formatting strings. If you want the weight rounded then you can simply use %d to convert to an integer.

Re: Sending SMS using labview

Ajtimstoj — Thu, 01 Dec 2011 10:03:38 GMT

Thanks for help, now i solve the problem of zeros and now I working on SMS problem.

How can I clear buffer of rs232 before send a message? Because now in this VI, when receive a SMS looks: AT+CMGS="+38670xxxxxx" Weight is 41,

Do not use such a large time delay. It effectively prevents you from quickly stopping the VI. If you press Stop while the code is inside the inner case you have to wait 10 seconds before the VI actually stops. If you want to check the weight once every 10 seconds, then use a small loop delay and use the Elapsed Time to see if the required amount of time has passed.

I insert the delay because when the case is true I receive 4 sms in 3seconds.

I don't quite understand why you are using a combo box for the message prefix. Why not a simple string control?

The program must have a box to insert a sms number.

Thanks for your help which I still need

Re: Sending SMS using labview

smercurio_fc — Thu, 01 Dec 2011 14:16:39 GMT

@Ajtimstoj wrote:

Hi

Thanks for help, now i solve the problem of zeros and now I working on SMS problem.

How can I clear buffer of rs232 before send a message? Because now in this VI, when receive a SMS looks: AT+CMGS="+38670xxxxxx" Weight is 41,

The VISA Flush I/O Buffer is used to clear the buffer(s). I do not know why you want to clear the buffer. You did not indicate what you are controlling (I'm guessing it's some kind of modem), so clearing the buffer is not necessarily the correct thing to do.

Do not use such a large time delay. It effectively prevents you from quickly stopping the VI. If you press Stop while the code is inside the inner case you have to wait 10 seconds before the VI actually stops. If you want to check the weight once every 10 seconds, then use a small loop delay and use the Elapsed Time to see if the required amount of time has passed.

I insert the delay because when the case is true I receive 4 sms in 3seconds.

This doesn't make much sense. Your fundamental problem is that you do not have a flag that checks to see if a message has already been sent. Your loop will keep sending the message over and over again while the weight is above a specified value. Is this what you want? Or, do you only want to send it one time only, each time the weight exceeds the value? If it's the latter, then you need a flag. See attached example.

I don't quite understand why you are using a combo box for the message prefix. Why not a simple string control?

The program must have a box to insert a sms number.

This makes no sense either. Your SMS number is a different control which is a string control. Why do you need a combobox to provide the text that comes before the value? Are you intending to provide a choice of messages? If not, then using a combobox makes no sense.

You also still have the serial port initialize and close inside the loop.

Re: Sending SMS using labview

RavensFan — Fri, 02 Dec 2011 04:24:10 GMT

Why did you create a new thread?

The questions you asked in the new thread seem to be pretty much the same ones you asked in the original thread!

Re: Sending SMS using labview

Ajtimstoj — Fri, 02 Dec 2011 06:37:03 GMT

@Ravens Fan wrote:

Why did you create a new thread?

The questions you asked in the new thread seem to be pretty much the same ones you asked in the original thread!

My mistake, I thought it more visible if I open a new thread. Sorry about that.

Re: Sending SMS using labview

Ajtimstoj — Fri, 02 Dec 2011 07:49:13 GMT

@smercurio_fc wrote:

@Ajtimstoj wrote:

Hi

Thanks for help, now i solve the problem of zeros and now I working on SMS problem.

How can I clear buffer of rs232 before send a message? Because now in this VI, when receive a SMS looks: AT+CMGS="+38670xxxxxx" Weight is 41,

The VISA Flush I/O Buffer is used to clear the buffer(s). I do not know why you want to clear the buffer. You did not indicate what you are controlling (I'm guessing it's some kind of modem), so clearing the buffer is not necessarily the correct thing to do.

Now I know where is the error, I put wait (ms) before VISA write and now SMS receive complete.

Do not use such a large time delay. It effectively prevents you from quickly stopping the VI. If you press Stop while the code is inside the inner case you have to wait 10 seconds before the VI actually stops. If you want to check the weight once every 10 seconds, then use a small loop delay and use the Elapsed Time to see if the required amount of time has passed.

I insert the delay because when the case is true I receive 4 sms in 3seconds.

This doesn't make much sense. Your fundamental problem is that you do not have a flag that checks to see if a message has already been sent. Your loop will keep sending the message over and over again while the weight is above a specified value. Is this what you want? Or, do you only want to send it one time only, each time the weight exceeds the value? If it's the latter, then you need a flag. See attached example.

I want to send only one massage in one time only, now i working on it, thanks for example.

I don't quite understand why you are using a combo box for the message prefix. Why not a simple string control?

The program must have a box to insert a sms number.

This makes no sense either. Your SMS number is a different control which is a string control. Why do you need a combobox to provide the text that comes before the value? Are you intending to provide a choice of messages? If not, then using a combobox makes no sense.

You also still have the serial port initialize and close inside the loop.

The combobox is not my idea but of my teacher, the user must insert diferent message inside, I know that there is no sense but must work this 🙂 .

Now in this Vi the message send complete, no code inside and so on ... Now just work on flag 🙂

Re: Sending SMS using labview

Ajtimstoj — Fri, 02 Dec 2011 13:21:43 GMT

I do not know how to do, if (temperature measured greter or equal set temperature) Then set true else set false.
Can anyone help me.

Re: Sending SMS using labview

RavensFan — Sat, 03 Dec 2011 04:22:49 GMT

I don't understand your question and I don't understand what you are trying to do.

Is this related to your other questions? If not, then now is the time to start a new thread. You shouldn't start a new thread for the same question like you had because you wind up getting people to take time to answer questions that were already answered in the other thread. (Notice how some of the answers here were identical to the ones in the other thread.)

Back to your latest VI. I don't know why you have a case structure inside a case structure. They both are triggering off the same boolean wire. If the outer case structure is True, then the inner one is automatically true because you have the same boolean wire going to the selector of the inner one. The false case on the inner structure can never run. And in that inner True case structure, you are doing another comparison that is identical to the one you already have outside the case structures. So you might as well just use the boolean wire coming off the outer comparison.

Re: Sending SMS using labview

Ajtimstoj — Sat, 03 Dec 2011 21:00:30 GMT

Now the program work if weight is hreter then I set send sms,but the results is 6 sms messages in 8 seconds.I want only one sms when is condition is true (set weight and measured weight) I really do not know how to set the flag when is first sms send, and reset the flag when weight dropt down.

Re: Sending SMS using labview

WayneS1324 — Sun, 04 Dec 2011 00:41:09 GMT

You should probably read some basic labview tutorials, or ask your teacher what a flag is.

Re: Sending SMS using labview

Ajtimstoj — Mon, 05 Dec 2011 14:32:37 GMT

Ok now I solved the problem of multiple SMS, but I have another one problem. I set weight 50kg to send sms, but when I put 60kg on force cell the measured take some 2-3 secods to final value (60,00kg 61,00kg) this is ok, but the message sent is always about 50,11 50,44 51,77. Never sent the final value.

Re: Sending SMS using labview

smercurio_fc — Mon, 05 Dec 2011 14:49:07 GMT

You are now changing the requirements. The VI will send the SMS as soon as the weight goes above 50kg. Once it does, it doesn't matter what the final weight is, and if it takes 2-3 seconds it doesn't care, because it sent the message as soon as it got above 50kg and any further increases ignored. You are continuously acquiring data, so you will catch a reading while it's increasing. Sometimes it will be 50.11, sometimes 50.44, and sometimes 51.77. It all depends on how frequently you are checking the reading. So, do you really want to send it once it gets above 50kg, or once it "settles"? Or, do you want to send two different SMS messages? One once it goes above 50kg, and another once it settles? Once you define your requirements then you know how to write the code.

Also, what in the world are you doing with that shift register? If you want a running average, use an array. Look at the shipping examples. And watch your datatypes. Your constant of zero outside the loop should be a float, not an integer.

Re: Sending SMS using labview

Ajtimstoj — Mon, 05 Dec 2011 21:49:40 GMT

I will try tomorrow, I just want a only one message-sms when weight stabilized - final value weight. If I put 60kg on load cell and sms condition is 50kg the message must be: Weigt is: 60kg .

Re: Sending SMS using labview

Ardent — Tue, 06 Dec 2011 08:18:50 GMT

Hi Ajtimstoj,

I think that the easiest way to check for the stabilisation of the scale is keeping the measured values in a shift register, and sending the sms only if last x values don't differ by more than some margin.

You can check the simple example I added. Just replace the prompt user dialog with your measured value and set a proper margin (also depending on your needs increase the number of shift registers to compare more values), and set your sms sending code in the true case.

If you have any questions, please don't hesitate to ask!

Re: Sending SMS using labview

Ajtimstoj — Tue, 06 Dec 2011 11:14:14 GMT

I'm trying, but do not know where miss. Did I miss something?

Re: Sending SMS using labview

RavensFan — Wed, 07 Dec 2011 06:34:41 GMT

You didn't wire up anything in your True case. You have hollow tunnels showing that there are missing wires.

The True case should look like this.

Re: Sending SMS using labview

Ajtimstoj — Sat, 10 Dec 2011 19:41:03 GMT

I solve the problem, thanks to all.

Re: Sending SMS using labview

MiBL — Sat, 31 Dec 2011 03:30:26 GMT

hi everyone,

do you have any idea on how to receive the sms by using labview?

i have tried with the AT commands for receiving sms and there is no error but i have encountered in receiving sms by labview!!

any example codes to refer?

thanks heaps

Cheers!

Re: Sending SMS using labview

Ardent — Mon, 02 Jan 2012 08:19:31 GMT

Hi,

since I think you are already reffering to the same issue in your other thread, could you please continue it there?

Thank you.