Executable files and data acquisition Drivers

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• motion control for vertical actuator and data acquisition

  Hello

  I am a researcher (a branch of civil engineering) geotechnical engineering and I have very little knowledge about the acquisition of control and data motion, so would need a lot of help from the experts OR. I have only knowledge base on these 2 aspects based on my reading of some materials on the Web site of NOR and youtube videos, so I hope that you bare with me . Here are my questions:

  I am trying to build an actuator which will be used to push a probe (a penetrometer with a load cell to measure the resistance of a soil sample), resembling the concept, photography in the attached file. I need to have these criteria for my system:

  (1) actuator, which can push the probe at speeds between 0.01 mm/s - 300 mm/s with precision and move the probe cyclically (upwards and downwards) in the vertical direction
  (2) load expected on the probe into the ground range: 0.02kN - 6 kN.
  (3) necessary to get the load cell load data and the speed of the probe.

  4) able to control the actuator to a PC (speed and posotion) and monitor data from transducers and data log time even the transducers.

  Guess my beginners is that I will need:

  For orders:
  (1) software - LabVIEW and NOR-motion assistant

  (2) controller - NI PCI-7342

  (3) driver/amplifier - analogue servo AKD Drive

  (4) motor - motor brushless servo AKM

  For the acquisition:
  (1) software - based LabVIEW development systems

  (2) amplifiers or other device - no idea what type on the conditioning of signals

  (3) data acquisition device - no idea what type

  Since I'm a beginner, is - that someone might recommend components (hardware and software) for the control and data acquisition. I'm on a tight budget, so I thankful if someone could help me to recommend components good enough to build my system.

  Thanks for your help.

  At these rates, you will need to run the sensor for the cDAQ.  You can configure the analog output on the Tritex nationally on the position.  There is an adjustable filter that you can set in order to get a clean enough to 300 Hz signal.  When you learn about the Tritex, make sure that let you them know what comms and e/s that you want to use.  If I remember, not all options have worked together.  The analog output may need to be my, but you can put a resistance through the acquisition of input data to get the voltage instead.  I don't remember all the details.  You should really not too much on the Tritex/LabVIEW side.  You will send your movement parameters (beginning of end of race, speed, position, accel, cut), and if you cycle (I believe you) or simply running in a loop.  You could also just be able to use the functions of jog.  When you get close to knowing exaclty what you need, PM me and I'm sure we can work something out with the drivers.  You need only the basics.  In fact, you could probably do this all your movements via digital and analog i/o.

• delay between the trigger and data acquisition

  Hi, I use NI SMU-6368 as a tool for data acquisition. In my experience, I use an external digital trigger to start taking measures of a thermistor.

  However, before the experience, I want to know the time that elapses between the detection of the trigger signal and data acquisition start time.

  Is there a way to do this?

  Here's the kind of thing I configure to get an accurate measure of time of t = 0 trigger signal to the

  the actual first A/D conversion.   It may be too much for a measurement of the temperature, but you should get

  the right track.

  -Kevin P

  

• Card FPGA and data acquisition synchronization

  Hi, we are control and data acquisition of several hardware devices (including Photodetectors and translational stages). Until last week, we used all the controls and acquisition using a PCIe-7852R FPGA board. However, we decided to move the acquisition part to a PCIe 6363 DAQ card to improve the sharpness of the tension. During the test, I found that the internal clocks in the FPGA and the DAQ cards are slightly inconsistent (not just a phase delay, but a difference in the period).

  I know because I have generated a square wave (period = 20) using the FPGA and gains using the data acquisition card (at a rate of 200 kHz, that is, 1 taste every 5). I have observed acquired place shifts 5 every 5 seconds approximately. Such a change does not occur if the production and acquisition is done using the same Board. Therefore, the only explanation is that the data acquisition and FPGA cards clock frequencies are different. According to my calculations, the percentage difference between their time clock must be 5/5 s = 0.0001%.

  Therefore, I wonder if there is anyway to synchronize clocks between them. Or, is it possible that I can drive the FPGA clock-based DAQ hardware, or vice versa? Also, please let me know if there is something trivial as I fix.

  Thank you very much.

  Kind regards

  Varun

  Hi Varun,

  my post was only one solution...

  Your data acquisition card may take an entry to control sampling of trigger. In this mode, samples draw on a rising edge of the external clock signal. As long as you stay within the limits of the DAQ (100 MHz for your card) material sampling works perfectly. There are even examples coming with LabVIEW explaining how to program your data acquisition card...

  This mode use you your FPGA as clock source sampling for data acquisition. Both will run on the FPGA clock in sync. When the FPGA is a bit out of 40 MHz, so it won't matter because both devices are triggered on the same clock signal...

• Y at - it an easy way to have a version number that the code VI has access to, and which is used as the version number for the executable file and the installer builds?

  Y at - it an easy way to have a version number that the code VI has access to, and which is used as the version number for the executable file and the installer builds? Now whenever I update my software I need to change the global variable where I store the version number, and then when I build I have in hand, open the properties and change the version number for the executable file and the installer. Is there an easy way to make these as all corresponding automatically?

  Have you tried a search? This question comes up a LOT. Here are the results of a search: http://forums.ni.com/t5/forums/searchpage/tab/message?location=Node%3A170&q=application+version#mess...

• Smartphones blackBerry how to transfer files and data

  How can you transfwer files and data from memory internal to micro sd card because my internal memory is full, and I don't want to delete things helps!

  Welcme to Frums.

  It is a duplicate.  Looks like you have posted this question within a few hours. Please see your other links I gave.

• How to get a program to the shared program files and data on a different computer?

  I run an accounting program on a Windows XP computer that has all the programs files and data shared to our local network. This accounting program is also installed on several other machines, Windows 7, and I want to know, how I move these Windows 7 machines to use the program and data off the XP machine, instead of using local data files (static)?

  This has been fixed, thanks. I ended the program on the host computer, and on this computer I just run the .exe; i.e. I actually run the program on the host computer.

• How can I use other companion DAQmax and data acquisition in labview code?

  Hello

  I'm new in labview and want to combine four different codes of labview and run them at the same time.

  I use my data acquisition PCI-6071E and BNC-2120. I want to send an analog output (flat DC signal) to control a blower, an analog volmetre to a (DC) output pressure transducer, also receive data from a pressure sensor and hot wire probe.

  I wrote four different VI for each of them (using DAQmax to output analog and DAQ assistant for analog inputs) and each of them works well, but when I want to use them together they do not work.

  Anyone know how to make them work together?

  Thank you

  Pooya

  To the DAQ Assistant, simply follow the instructions for the selection of multiple channels when you create (where he says quite clearly,' ' or to select multiple channels "). If already created, open the DAQ Assistant and click on "Add channels" at the top of the page.

  When you use a physical channel name, you simply click on browse instead of a single channel. Use the same or for multiple channels.

• Control and simulation and data acquisition

  Hello

  I am applying to motor control in Labview. I'm sampling speed from DC engine in real time through an acquisition of data. (my sampling time is 1000 samples per second)

  Then wrap speed as input to a Simulation (simulation and design of the order) and inside the loop simulation, I have a PID controller. The PID has the actual speed of the engine for the acquisition of data and the engine reference speed as input.

  Reference engine speed comes from the generator of signals (control design and simulation-Simulation) and is a waveform.

  My step in the engine size is 1000.

  I am running this application real-time and drawing the reference signal and the motor real signals. I run into several problems with regard to the calendar.

  1. when I change the size of the step of the simulation loop, the frequency of squares of reference also seems to change. For example. What step size = 1000, duration of pulse = 1 s. What step size = 100, pulse width = 0.1. (My pulse frequency is 1 Hz, Simulation clock - 10 kHz). How step size can affect the pulse width.

  2. can you explain the relationship between the DAQ, the Simulation step size loop sampling time, Loop Simulation period.

  3. If I want to collect different sets of data using sampling different hours, it's OK to change the sampling DAQ time without changing the size of the step of the simulation.

  Would also like to emphasize that the DAQmx calendar under sample clock mode is placed in front of the simulation loop and the output is connected to the loop simulation.

  Appreciate any help.

  Hello

  Maybe some screenshots of your code would help. Furthermore, what you have read your samples together with your DAQ screws?

  (1) If you have a waveform, the output is specified as:

  

  For example, if you change the size of the step of the simulation loop, you change the simulation time which are introduced into the signal generator and affecting the waveform that you see if you do not have a size quite small step to characterize the waveform that you generate.

  (2) sampling DAQ rate is the speed at which samples are taken on the acquisition of card data itself. The size of the simulation step, help. "Specifies the interval between the time when the ODE Solver evaluates the model and updates the results of the model, in a few seconds." Simulation loop, still using, "Indicates the amount of time that elapses between two subsequent iterations of the loop of control & Simulation.". " "Step size determine the value of t that is introduced to the functions you use in the loop simulation while the loop simulation period controls simply to how fast you change the following t value. The sampling rate of DAQ hardware is a clock of completely separate hardware controlling the analogue-digital on the DAQ card converter so that you can get a deterministic dt between the samples being acquired.

  (3) you can change the schedule for the acquisition of data, but you will need to restart each time the changes take effect. If you change the calendar of data acquisition and want your values to correlate with your simulation, you will need to change your size of step as well.

  -Zach

  -Zach

• is it safe to update from windows 7 to windows 8 without having to worry about losing files and data of the current computer?

  will I lose my files and stored data when I update from windows 7 to windows 8?

  will I lose my files and stored data when I update from windows 7 to windows 8?

  There is no particular risk to lose anything, if you do an upgrade, rather than a new installation, and if you do it right.

  * However *, whenever make you a leap like an upgrade from one version of Windows to another, there is always a risk. Things * can * fool you. So before I do, you should be sure you have a current backup on external support of all important files for you.

  And another point. Even if you do not upgrade, it is * always * a risk of losing. So you should be sure you have a current backup on external support of all important files for you * all * time, not just in the moment it takes important steps.

  You can read this article on the backup that I wrote: 'Return to top your computer regularly and reliable' to http://www.computorcompanion.com/LPMArticle.asp?ID=314

• Error 200220 CRIO 9081 and data acquisition modules

  Hello

  I try to use a CRIO 9081 with NI9206 modules. Max recognize the chassis, but not the module.

  When I try to add an acquisition of data associated with the NI9206 in Veristand, 200220 error message seems.

  I have the solution, finally he was required to add a custom device to search for new engines and detect modules. Then, it is possible to interact with modules.

  Thank you very much for your help!

• Error using an executable file and Excel 97

  Hello

  I have a program that writes a file samples periodically (a specific) Excel, the program works fine when I run LabVIEW, but when I try to do the same thing with an executable built with report generation tool it opens for awhile without any Excel sheet, the file is closed and the executable generates the following error ' ': Error 97 "in a system error unknown whole cell Value.vi-> test.vi", can someone please tell me what is causing this error and how to fix it? Thank you.

  Attached files, you will find a view of the value of the cell value and its location on the main program.

  I use LabVIEW 8.6 and Excel 2007.

  MGarry

  
  

• Deleted virtual disk file and data store, just want to boot OS now.

  So I had a VM win7, and I added a virtual disk on a new data store.

  The new drive came out fine on windows as a new drive, and I was able to format etc.

  Now I basically unplugged all the system and booted Linux instead of ESX and ran all over the disk on which was my data store.

  Then I started in vmware and saw that the Windows VM was in a State of 'suspended' and if I try to take it back, he complains the missing disk file.

  "

  Reason: The system cannot find the specified file.
  Cannot open disk ' / vmfs/volumes/504e6c8a-b20d8bfd-1768-001e674dda97/win7/win7_1.vmdk' or one of the snapshot disks it depends on.
  VMware ESX can not find the virtual disk "/ vmfs/volumes/504e6c8a-b20d8bfd-1768-001e674dda97/win7/win7_1.vmdk". Check that the path is valid and try again.

  "

  But it does not successfully. I tried to change the settings to remove the ' disk hard 2 "of its devices, but which is disabled since I assume that the virtual machine is suspended."»

  I don't like on the virtual disk or any data on this subject, I have need to be in windows - I want to just start in

  Is it possible to get out of this State without having to remove the entire virtual machine and re - install windows?

  Thank you!

  > and started instead of ESX Linux and ran all over the disk on which was my data store.

  Sorry - that "ran the disk" mean exactly?

  to get rid of the suspended state - delete the VMS, as well as all the VMS file references in the vmx file

• How to make a restart of disk with the files and data, that is to say, to the profession of XP

  I looked at my hard drive and have little or nothing left to free space, and I d ' attribute of * on my pc, I have removed more than half of it I do not either, but the hard drive still does not seem to move with more free space. so I was wondering if someone can tell me how to make a backup of drive for windows and programs, but not all the other files that I have on my hard drive, I would put the disc that came with the pc, but I left it out and the dog he finished, numbers and all, I can reinstall everything I need later ,,

  It is not a method of "reset" of windows, se...

  also, there are 'boot' cd that can be made, but they cannot be used to start windows.

  what they do is to start the computer with their own proprietary software, being generally utility to repair the file system.

  Subsequently, it is the hope that xp can then start by itself.

  don't know exactly what your situation is.   However, it seems that it would be a good idea to mount this hard drive as a slave / secondary drive on a working computer.   all computers can have at least 2 hard drives installed at the same time.

  in any case, if this drive can be enslaved on a working computer, you can use this computer to reconcile the master file table, i.e. to check the disk, then it - defrag since you had deleted half of the records of the file system.

  by the way, if your pc is not stable, how would you be able to make a bootable cd?

• Assistants of programming and data acquisition

  Using the flat sequence and DAQ Assistant, how can implement us planning algorithm to enable or disable a specific image in the sequence?

  Do not use the flat sequence structure! You can't turn any image. Just one of the disadvantages of the structure of the sequence. They are rarely necessary. Flexibility, use a state machine.