Which way to self shot from Camera? Usage for view number. I already manage to shot from webcam, display the image and reading of the vehicle, but you must have a photo with nghề. I want the camera of the body you have self to take a camera camera when you have set the previous front of the previous gear. Thank you!
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How to automatically take photos from Camera with Labview ?
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Width of Hysteresis
I need to compute the width of a hysteresis plot. I have been wondering if there is built in function or a combination of them that can do this computation directly from the XYGraph.
Any ideas?
Thanks,
Gregorian7
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Calculo da Velocidade
Boa tarde, eu estou desenvolvendo um programa para faculdade onde eu preciso calcular velocidade media.
Eu estou utilizando 2 sensores de barreira para captar o pulso de entrada através da placa de aquisição NI USB-6009.
Minha ideia era a seguinte, quando eu receber 1 na primeira entrada, eu começo a contar o tempo (segundos) e quando receber o segundo 1 eu paro de contar, e faco a conta de Vm= S/T. porem eu não estou conseguindo marcar o tempo, alguém poderia me ajudar?
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Calculo da Velocidade
Moved to Portuguese board
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Como resetear una grafica graph XY?
Moved to Spanish board
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How to solve memory full issue while writing data periodic?
I can use my program to acquire sound pressure data continuously.
But when collecting data for a long time, I don't need to do it because my disk space won't be enough.
I want to run acquire data for 1 min then wait time 1 min,so I add time delay Express VI in it,and found the memory full error happen after few hours.
I found maybe the problem is the Obtain queue ,the buffer size can't store too much data, then I add the loop include the system. But It still did't work well.
Does anyone can tell me what I need to do to fix it?
Here is my program.
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Repeat a portion of code periodically
Hey everyone,
I've got a program structure problem that I could use some help with, and am wondering if anyone has some ideas. I have to make a program in which a portion of the code has to be repeated periodically, the overall program may run for many hours but i need some portion of the code to repeat (for example after every 15 or 20 mins).
The program structure involves flat structure with few loops also.
Looking forward for recommendations.
Thank You
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How to make automatic signal Classification using either raw IQ data or after applying demodulation?
Hi all. I am trying to make automatic signal classifier. That is when we get a radio signal the program will determine what type of modulation scheme is being utilized (FM,AM,MSK,PSK,GMSK etc.). I have just started this project and any idea or link etc will be greatly appreciated. My own approach is to demodulate the iq data first by sending it to all type of demodulators then using voice detection to determine the valid modulation scheme.
Any type of help is appreciated.
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How to I save .WAV using microphone and DAQ?
Hi.
Thank you for your interest.
I want to create a wav file from a signal from an analog mic in the headphones and analyze the voice.
The modules used are DAQ-9191 and NI 9234.
I used the IEPE-continuous inpu example, but I can not check the signal.
I also do not know how to save this data as a wav file.
I would like to expand the channel to three (three inputs at the same time).
I do not know the example.
Help me, please.
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Block Diagram won't clean up
I have a block diagram for a vi that won't automatically clean up anymore. I think Ctrl+U stopped working back in 2015 for this particular vi, but because it never required any updates it's been left to fester. I am now trying to add some additional functionality but because of the size of the diagram I can't track all of the wires especially as some of them loop behind other structures. Also at the heart of the matter there is a massive flat sequence (I know I know, currently converting them to state machines when I can)
The block diagram is in excess of 32000 pixels tall.
CTRL + U doesn't work. I have tried manual tuning options which don't work.
CTRL + DRAG works to make more white space.
CTRL + ALT + DRAG doesn't seem drag elements from off the screen edges.
I have tried this in Labview 2015 and 2017.
I am resigned to the fact that I'm going to have to rewrite this vi from scratch, but is there a way to tidy it up enough that I can see all of the vi's that are in it and how they are connected?
Image may be NSFW.
Clik here to view.
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Connectivity issue from a server to Client OPC
Dear All,
Now I am trying to connect the RGA directly to my system.
In past i connected it by the switch with port Number 7009 and TCP connection port 2080 it was working properly but when i am trying to connect it directly to my PC it shows connectivity with the RGA only but not with the Main labview program, i attached couple of picture please help me in solving this problem.
Regards,
Taufeey
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RT to FPGA transfer via DMA FIFO data access
Hello,
I am trying to send data via DMA FIFO to the FPGA from an RT. The program is running and behaving the way it has to. After finishing, the data has to be saved in a file so i can use it to work on it.The issue is that it seems like there is no file created. If i am searching for ftp://<ip address> where <ip address> is the IP address of my CompactRIO System i´m not able to find anything.
I am working with Labview 2018 and cRIO-9035
Any help would be greatly appreciated.
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Local Variables in Labview NXG?
Gentleman -
I am failing at the simplest LV thing: getting a global Boolean variable to be set inside one VI's loop and read inside another VI's loop. I can get the Boolean global to work as a local variable just fine within a single VI, but the communication between VIs does not work. Here are the two VIs and the global.
I am using LV 2013. Is there some setting in LV that I have to adjust to allow globals to work from one VI to another?
Thanks for your help, pk
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Removing the space used for menubar and toolbar in executable
I would like to completely remove the menubar and toolbar in my executable. I know how to hide them, but that leaves the space used for them. Is there a way to completely remove the space used for it?
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temperature PID does not become zero
hello,
when I run the attached vi, plant output reaches setpoint and still the PID output is bigger than 0? Plus if I put dead time in, shouldn't the response of the PID be delayed by that time? This is why I want to use this vi in the first place (temperature autotune)
thanks!
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définir les noms de tracé sur un graphe de signaux mixtes
Moved to another board
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NI X-Net Bus Monitor - doesn't work
Hello,
I'd like to read the LIN comunication between two devices (Master & Slave). In order to do this, I'd like to use the X-Net Bus Monitor with my 9866 connected to my 9066. but I'm not able to read anythink (see pictures).
I develop a VI that is able to be the master and, in the same time, it could receive the answer from the slave. That VI works properly. For this reason, I cannot understand why the Monitor doesn't read the comunication.
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Best Practice: Is it better to write to a front panel object via a Reference>Property Node combination, or directly via a Constant>Duplicate Terminal
I'm currently using NXG 2.1, and I've put together a front panel with a string indicator called "Messages" which I need to change periodically with a Case Structure. I've found two ways to do this, and I'm just wondering which one is "better" (i.e., which is the preferred, or perhaps more efficient method).
Method one involves creating a Reference to my Front Panel object "Messages" and attaching a Property Node, then writing my new string into that Node. The advantage here (FWIW) is that I can keep the "Messages" Reference outside of my Case Structure, so there only needs to be one, and the Property Nodes / string constants can be placed inside the individual cases.
Image may be NSFW.
Clik here to view.
Method two involves right-clicking on the terminal for my "Messages" indicator and selecting "Create duplicate terminal". Using this method, each Case gets its own instance of the duplicate terminal and a new string constant.
Image may be NSFW.
Clik here to view.
Is there any significant difference between these methods, or any advantage to using one over the other? Thanks for the help!
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NI USB 8452 excessively long program execution time
Hi, I have a LabView program that uses NI USB-8451/2 and sends SPI commands to a slave device repetitively in a loop. I want the program to have as short iteration time as possible, to be able to re-program slave device fast.
The NI-USB 8452 have an excessively long execution time of 1000+ ms. This is not a complicated program, no converging algorithms or anything similar, just simple calculations and register write/read. For comparison, the same program on the older NI-USB 8451 takes 20-30 ms to run.
Also, i noticed that execution time on 8451 gets longer and longer as more iterations are done (after thousands of iterations time reaches 300-400 ms , from initial 20-30). There are no self-appending variables. All the variables are re-assigned on the start of new iteration.
What's the issue? The SPI runs with 10 MHz clock and wirtes/reads 11 32-bit registers, so the programming time should not take longer than hundreds of us.
The program uses formula nodes for simplicity.
I would be grateful for any help.
Regards
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Disable the delete button in the system definition file
Moved to another board
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