Continuous data collection?

Similar Questions

• Excerpts from continuous data acquisition

  Hello

  I want to make an acquisition of continuous data with a NEITHER-6133 @ 1ms per channel. The data must be stored on hard disk. At the same time, I want to take excerpts from acquisition to calculate different values. The acquisition of the extract must be triggert by an external digital trigger.  Are there examples, which combine continuous data collection and collection excerpts?

  Thank you very much.

  Best regards

  Michael

  System

  Windows 7

  LabVIEW 2012

  NOR-6133

  Thanks to the support of NOR-Germany, I found a solution for me:

  1.) continuous trigger switch

  Connect 2) the trigger for the signal to a digital i/o

  3.) synchronize AI and DIO

  Excerpt 4.) the samples needed by the search within the digital waveform pattern

  Result:

  The example shows 4 IA channels Cup (tested on Win7, NI PCI-6115, 4 channels each 5. MECH / s) and calculation on extracts from each channel signal triggered parts.

  

• PCI-6110 continuous data

  I am trying to take data continuously from 4 channels maximum 5Msamples per second and writes at the same time as the data on the drive using the TDMS writer.   I use daqmx LabVIEW tools to read and write data.  I get failry good flow, but it is not completely continuous.

  1 is it possible in Labview?

  2. is it possible with NIScope?  NIScope is at all related to labview?

  Thank you

  Ben.

  I'm not an expert DAQmx, but it is a fairly common use case covered by the API. You can configure DAQmx so that when the data are collected, it is written as efficiently on the disk. You can do it for a continuous data stream. You can find an example of this here (and more examples using the LabVIEW example Locator: Help-> find examples...):

  \examples\DAQmx\Analog Input\Voltage - Input.vi continues

  This VI uses the data at the level, so you will want to choose not adjusted I16 data for the type of output to the maximum speed.

  Alternatively, you can use a producer/consumer architecture, acquire data in a loop and it continuously to the PDM in another. It is essentially this as the example above, but much easier and more quickly, because it involves fewer copies of data.

  Good luck!

• How .vi DAQmx Read (analog 2D NChan DBL NSamp) to acquire continuous data?

  I try to get the .vi DAQmx Read (analog 2D NChan DBL NSamp) to acquire data continuously.  The 'help' indicates I need to wire the number of samples per channel-1, but it doesn't seem to work for my application.  If I have the wiring to any number greater than 0, the data collection works, but is not continuous.  I enclose the code (Sept15_MainPanel_WorkingBaselines_ApplyBaselines and Calibration.vi) and a Subvi (Collect_Baselines.vi) if someone wants to take a look.

  Here's what I'm trying to do:

  I use a unit NI USB-6009 to collect analog voltages of load cells 2 (channel 0 and channel 1) and 2 displacement transducers (channel 2 and 3).  The main panel of the VI contains a listbox with 4 options - 'Check EMG channel', "Collect base lines," "Collect Data" and "end of program".  'Collect base lines' 'End of program' work and I'm working on writing code to "Collect data".

  For the option "Basic collection", 2500 samples are read from 4 channels described above and 2500 samples are averaged.  This works.

  The option "Data collection" - I would like to that data from 4 channels to acquire permanently.  Finally, for the option of data collection, data acquisition stops when channel 0 detects the force of 200 N - so I will not always have a finite number of samples read.  The time it takes to reach the value of this force will be different for each test.

  -How can I get continuous samples for my 4 channel?  Is .vi DAQmx Read (analog 2D NChan DBL NSamp) function badly and if yes, what should I use?

  Thanks in advance for any ideas or advice.

  Esther

  First, in case 1, you need not the structure of flat sequence.  The son of the error and data properly will dictate the flow of execution.  Then, in State 2, you must initialize the shift register, unless you want to keep the data is accumulated each time that you run the vi.  The reason why you don't see all the data here is because you have - 1 wired for the number of samples per input channel.  You must connect a number here, even if you are taking continuous samples.  The service needs to know how much sample to gather at one time.  If you put-1 here, the number of samples per channel must be set up in the synchronization function DAQmx (sample clock).  If you specify a number here, then you put-1 in playback function.  The DAQ hardware will read continuously, you must retrieve the data from time to time, so you must specify the number of samples.  By reading inside a loop, it will continue to read until the stop function is encountered.  I guess that the Clear function acts as a stop.  But you must always indicate playback vi how many samples to read and return on each iteration of the loop.

  The documentation is a little misleading.  He warns that a - 1 will cause a continuous reading.  But the pads are so big, he can not read continuously forever without losing data.  If you specify a finite number, playback in a loop, and he will read this number and return the data (empty the internal buffer) at each iteration of the loop.  Continuous means that you just call the start function once.  He will read at each iteration of the loop until the stop function (or clear) is called.

  Here is the difference between the setting of the Timing DAQmx function for continuous or finished reading: finite samples requires a tenure, he reads the finite number of samples, and it's done.  It requires another start to read more data.  Continues to read requires only a start.  It still reads a finite number of samples, but when this is done, you can retrieve the data by calling the read function until he could continue.  After the reading, you don't have to call for new start.  Look at it this way.  Start is what starts the collection of data, not the read function.  Just read empty buffers in your data feed.  The data acquisition continues in continuous mode, but you must call read again to get the data on the pads.  If you specify basically buffer size when you set the number of samples per channel.

• Function Array data collection

  
  

  SAMB. wrote:

  Almost, I think I would need to have a running table continuous, data at a sampling frequency x / min and be able to call the last x amount of data. I'm not sure if this is possible in LabView.

  You can do with a simple delete of table.  Just wire in the number of samples in the entrance of length and you get the last X samples on the release of the deleted section.

  Of course, doing it this way (ceases to increase table) can lead to unnecessary use of a lot of memory.

• I32 flipping index iteration continuous data acquisition

  I'm doing some continuous data streaming with Labview FPGA and periodically generate a trigger signal

  the timestamp after a number fixed iterations.

  The strategy I would try was to review the iteration index in the timed loop and whenever he tipped a fixed number I would generate a trigger of the FPGA.

  I tried to find out what happens when you get to 0x7FFFFFFF samples on the register of I32 and apparently

  the index does not roll... It just remains to count max once reached it.

  Is there a way to derail the index on a timed loop? Otherwise I wil just add another

  U32 variable and increment it each cycle and let it roll on.

  the iteration count does not roll.  Therefore at this historic moment, but just use a registry node, local or feedback shift instead.

• write the table in its entirety in text file after completing the data collection

  Dell NetBook, Windows XP home, OR-6008, Labview 8.5.1

  I read a psydo real-time app 8 analog signals at 100 Hz.  I can't write directly to a file of data during data collection (processor flash drive to slow down), but can store 4 2D tables separated, with one added timestamp data.  Once I finished collecting data, I would record each table in a separate text (csv) file.  Using takes a loop for in long and using the 'picture to a worksheet string' add labels that I can't change.  I'm climbing down a text file of 3 columns and lines equal the number of samples, I've collected (e.g., a 1 minute session would be 6000 rows and 3 columns).

  1,1.3,1.5,

  2,1.2,1.4,

  3,1.4,1.1,

  4,1.5,1.2,

  5,1.4,1.4,

  etc.

  Thank you

  Troy

  
  

• WJA - has no alerts - inaccuracies of data collection

  I've been running Web Jetadmin v10.2.7491B on a Server 2003 during approximately 3 years. There are 120 managed printers consisting of 9 different models.

  Question #1

  Initially, I got alerts configured on all printers that would send an email when a consumable fell below 3%. It worked very relibly for the first year. Over time, a growing number of printers stopped to send reports, until finally only a handful sent alerts. I never found the cause of this problem.

  Question #2

  Alerts being broken, I set up a collection of data daily for all printers and a csv morning emailed report. I then sort data in percentage of consumable remaining and replace those 1% or less. Recently, reports have stopped 3 models on 9 specific consumables percentages in daily reports. This problem seems to be with an update of the firmware that I pushed to all printers. The console does HOSTS shows specific information for individual printers when they are selected.

  Steps taken to solve #2

  Printers have been removed from all groups from the Collection of data from reports and then added. This has not solved the problem. Printers were originally added individually to a data collection, but I've set up a group policy that automatically adds a printer to the collection of data. 6 models of printers are still accurate percentages, but not the models 4345, 4730 and 5035.

  Is there a file database that I can delete that forces a rebuild of the collection of data for all printers? Is it possible that the new firmware for the 3 models listed has a bug which prevents update data?

  

  This forum focuses on the level of consumer products.  For that matter, you can get best results displaying in the company, print, network and Web Jetadmin forum here storage servers.

• How to view the data collected in vi main indicators in an another vi

  Hello

  I data collection to aid NI 6251 USB DAQ in vi but as I have too many controls and indicators on the main façade of vi. So I want to display the indicators (graphs) in an another vi. I want also the vi with graphs automatically opens. Anyone know how I can do this? I'd appreciate any help.

  Thank you

  ygupta

  Hello

  Search for the concept vi sub forum.

  For your reference, I have attached an example.

  You can see the procedure for the same thing on the net.

  Kind regards

  Shrek

• Performance Monitor Remote cannot get data data collection

  While trying to collect data from a remote Windows 2008 Server (Serveur_B) to another (Server_A) W2k8 Server I get the following error message: "when you try to start the data collector set the following system error occurred: no data to return.»

  However surveillance in real-time remotely from Serveur_B is no problem.  Local real-time monitoring and data collection of Server_A is also successful.

  Is the error due to security restrictions?

  Hi Scott,.

  The question you have posted is related to the Windows Server product and would be better suited to the TechNet community. Please visit the link below to find a community that will provide the best support.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home

  Thank you.

• How say continuous data 2D?

  Hi, I have problem with my block diagram. I plan to display data (from temperature probe NICrNi) of several channels and memorizing the data in csv and tiara permanently file. Now the problem is how to say continuous data 2D (double data types)? because the result of the measurement are very unstable... I try using the function means PtByPt VI but she need to double entry of data types... Are so there is another way to describe the data? for example I need an average of data for every 20 samples.

  
  

• The Event Viewer error on startup: "the scheduled task of CARPET met a failure during configuration data collection. HR = 0xC004F00E.

  I use Windows XP with AMD processor clocked at 1.6 Ghz and 2 GB of RAM. This error appears in the event viewer whenever my computer starts. I don't know if it's doing any harm. can someone advise?

  original title: the scheduled task of CARPET met a failure during configuration data collection. HR = 0xC004F00E

  Hello Steven,

  Did you ever receive notifications that a virus or malware has been removed from your system recently?
  My only thought is that it is the remains of an infection on your machine.
  It is most likely harmless, but I don't understand why you'd be concerned.
  Do you have any task scheduled to run at startup using Task Scheduler built into Windows?
  http://support.Microsoft.com/kb/308569
  I would check to see if there are tasks to run at startup:
  http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/sag_tsconcepts03.mspx?mfr=true

• WinVerifyTrust error 24592 trying to install SPSS Data collection

  I am trying to install a legal copy of SPSS Data Collection on my computer, which runs Windows XP.
  Each attempt and before the installation reaches the authorization process, the installation stops with a message that says:

  Error 1330. Impossible to install a file that is necessary because the E:\Data1.cab CAB file has a signature digital invalid. This may indicate that the file is corrupted. Error 24592 was returned by WinVerifyTrust.

  (Drive E is the I install from the CD-ROM drive.)

  I saw a lot of similar posts for other packages, and many answers suggests that it is due to an update of Windows since a couple of years. I tried the solutions proposed, such as move InstallShield program directory on the desktop and disconnect my internet connection. So far, nothing has worked.

  I need this software for my work, so any help would be appreciated.

  Hi GaryHearne,

  Try the steps listed in the next post to solve this problem:

  SPSS Statistics 17.0 throw error 1330 on installation

• lack of system restore - the animated icon appears to indicate the data collection, but then it stops

  When I try the system restore, I am able to choose a restore date. I then accept the details and press next to accept. The animated icon appears to indicate the data collection, but it then stops. Therefore, the system is not shut down and restart (which I think it is supposed to do). If you try to select another date that is the same thing. any ideas? I think that I was previously exposed to a system whose consequences restore virus had to hide all my files. I'm still not programe files on the start menu.

  Hello

  Method 1: I suggest you to run the Microsoft safety scanner to ensure that the system is free of infection by the virus:

  http://www.Microsoft.com/security/scanner/en-us/default.aspx

  Note: you can lose data if the parser detects a corrupted data file.

  Method 2: Run the SFC scan and check if system files are intact:

  How to use the System File Checker tool to fix the system files missing or corrupted on Windows Vista or Windows 7

  http://support.Microsoft.com/kb/929833

  Method 3: You can also try restoring the system to the Windows recovery environment (WinRE):

  What are the system recovery options in Windows Vista?

  http://Windows.Microsoft.com/en-us/Windows-Vista/what-are-the-system-recovery-options-in-Windows-Vista

• VMware vCenter Server service stops or restarts at the start of data collection

  VMware vCenter Server service stops or restarts at the start of data collection

  I am using vCenter Server 5.0

  Whenever I have begin to collect data, vcenter service stops or restarts, if I stop data collection and to disable the agent, vcenter service again and works well.

  Please any help!

  Thanks in advance

  It is a known issue, relating to the collection of historical data being enabled (nonzero) in the properties of the VMWare Agent on the Agent status screen.

  Change to 0 to disable/re-enable the agent and it should fix the problem.

  Please open a ticket of level 1 with telephone support if you need more help.