How to read data from OM - 62 temperature/humidity data logger in LabVIEW?

Similar Questions

• How to read continuously from the rs232?

  Hello

  I'm new to LabVIEW and my questions would be obvious for some for you. So please help if you know the solution.

  It's for my school project. For your information, we need to schedule a Committee of Altera DE2 to control traffic lights (something like that) and at the same time, the Commission shall forward the States of enlightenment to a computer with LabVIEW installed via an RS-232 cable.

  The rest of the project was fine except for the part of LabVIEW, because as I said earlier, I'm new to LabVIEW.

  We use the "basic series write and Read.vi" in the folder examples of NEITHER. The problem is that we do not know how to change the vi in order to receive the data that come the DE2 Board permanently. Each time, the vi stops reading after receiving 24 bytes of data.

  So, the first question is:
  1.) how to read continuously from the RS-232 port? (We tried to use while "loop" but without success, maybe we were doing it the wrong way.) If you know the solution, please enlighten us for us in a detailed manner.

  (2) Secondly, once we have received the 'chain', how can convert us to bits (0 and 1) so that we might be able to manipulate the bits, for example turn on the LEDs that correspond to the bits.

  Thank you.

  Instead of reading the bytes of the port so to read that many bytes (which may be zero), just do a VISA read for 1 byte.  He will wait for this next byte.

  To get an array of Boolean out of this byte, use this code.  He turns the characters into a byte array.  Takes the first and the only element of this array, and then converts this single U8 number into an array of bytes.

  

  Which country are you?  I've never seen or heard lights orange before.  Only the yellow lights.

• How to read data in Adobe Flash and align it to look like it's column?

  I am doing an application that already exists, but I add a few improvements. I'll explain what this app is. There is a server and client side. The client side adds data to the Access database (the columns are time, name and surname). On the other computer is an application that displays this data (I don't know if he reads a database or another type of file, but I did a database). I know that server-side plays an .swf Flash file. This screen stays for about 30 seconds and then the application plays videos in the video player installed (ads, this model is connected to a TV) for some time and then the screen goes back to the display of the data.

  I'm 18 and I have very limited knowledge of Adobe Flash (I learned something at school). I've done completely client-side app. I now how to create server-side. My main problems are: how to connect to Adobe Flash to the database (is it possible to transfer this data to any other file that can be connected to the Flash?), how to read data from database for Flash and how to display it. I don't want to display the data in the grid. In the application that already exists, each word is like a new text (tool in Flash) and it is aligned. Is it possible to add a loop that creates new texts and plays database cell? How to refresh the Flash screen?

  I know it's a very complex issue, but your help would be very appreciated. I did on the client side in Delphi. If you need more information or if you do not understand something of my explanation, don't bother to ask. Thank you!

  You can transfer data back and forth between Flash and database on a server with PHP as the intermediary.  If you are looking for Gioogle use terms like 'AS # PHP MySQL tutorial' (fillin 2 or 3 for the ' # '), you should be able to find something to help you along there.

  What about adding new textfields and harmonizing, it depends on what version of as you use.  In AS3, you use just...

  var tField = new TextField();

  tField.x = a value to match.

  addChild (tField)

  As far as refreshing goes, this would require removing all Textfields you added and re-create new ones like you did the first time.  Yet once, it depends AS version that you use.  In AS3, you can use removeChild()

• How to read messages from a blocked number?

  How to read messages from a blocked number?

  You do not have.

  You need to unlock and then you can read the messages that comes after unlock it.

• How to read data from an excel and HTML file

  Hello

  I write a 2D-array of string in Excel/HTML file using the generation of reports.

  Can someone tell me how to get back in return, the written data, same files again and display in table format.

  Thank you & best regards

  Visuman

  You can use activex to read data from the excel fileback to the table format... through this vi... may b this will help you...

• How to read data from the drop-down list

  Hi all

  I use this to display a drop-down list.

  inputScreen.add (new NumericChoiceField ("number of objects:", iStartAt, iEndAt, iIncrement, iSetTo));

  How to read the data selected by the user? say if my list contains from Monday to Saturday, how will I know what day selected by the user? and how that store in the variable? Thank you.

  You have your data in a table and this stone he is used to populate the ObjectChoiceField. The FieldChanged listener you can obtain what the iteme selected to help index:

  int index = yourObjectChoiceField.getSelectedIndex ();

  and for the use of the object:

  Bean of MyObject = myObjectArray [index]

• How to read strings from a file data?

  Hello

  I have a little. CSV files, which were inside the trees channels (load force, opening force, distance) captured from both engines.

  I want to load multiple CSV files and analyze only two strings (opening force and distance of travel) and send them to a report (go the distance on the x-axis and opening force to the y-axis), but in this report as all channels of all CSV files I have loaded. (make a multiple load)

  My question is how can I read csv files the channels I'm interested and then analyze?

  I use this example to HELP to load the data:

  Dim MyFileNames, iCount
  Call FileNameGet ("ANY", "FileRead", "D:\BOF-MIU\BOF Dim", "data CSV (*.)") "CSV), *.csv", "All.lst", True, "data selection".
  MyFileNames = Split (FileDlgFileName, "|")
  ICount = 0 to Ubound (MyFileNames)
  Call DataFileLoad (MyFileNames (iCount))
  Next

  "and then I try to analyze, but I don't know how to divide the csv file to get only the channels I want."

  Call ChnSmooth ("filedlgfile &" [1] / axis 1: Position (uu) "," / smoothed ', 12, "maxNumber" "...) Y, E, SmoothWidth, SmoothType

  Thank you for your time.

  HI Maria,

  Here is the approach to file dialog you asked--use it instead of the "FilePaths = GetNaviSelFiles()' in the command script I sent you:

  DlgTitle = "insert a file dialog title here...". »

  StartPath = ProgramDrv & "Libr\Dat\".

  FileExts = ' *.» DAT; *. TDM.

  Call FileNameGet ("All", "FileRead", StartPath, FileExts, "No", True, DlgTitle)

  FilePaths = Split ("|" & FileDlgFileName, "|")

  The trick in the TDR file I sent you was set up for mode "exanding" in the "Page layout settings" dialog box  It is an old display option that can cause problems if used in bad situations, but it seemed that it would make your life easier for this particular task.

  Brad Turpin
  Tiara Product Support Engineer

  National Instruments

• How to read data from several files and add columns in a single file

  Hi guys,.

  I have a problem in adding data from files in different columns. I have the attachment a file A and B which I am reading and not able to get the data in the Result.txt file. Please give your opinion on how can I do this

  You must add the data of all files before proceeding with a single entry.

• How to read data from the unit to acquire data with LabVIEW

  Hello everyone, I'm new with LabVIEW and I need help. How to build LabVIEW program to read and store the data acquisition unit temperature data. the data can be any store such as Excel or a text file? Thank you.

  Start passing by examples of LabVIEW.  Go to help-> find examples.  There are several examples here just for the analog input and then even more for logging data to a file.  After that, show us what you have and we can guide you a little better that way.

• How to read data from a QVariant

  I have a multi select list, and I need to get a list of the people selected.

  QML

  ----------------------------------------------------

  {To ListView
  ID: lv_ingredients
  horizontalAlignment: HorizontalAlignment.Fill

  dataModel: _app.ingredientDataModel

  multiSelectAction: {MultiSelectActionItem}
  }

  {multiSelectHandler}
  actions:]
  Add the actions that must appear in the context menu
  When the multiple selection mode
  {ActionItem}
  Title: "search people".
  onTriggered: {}
  _APP.search (lv_people.selectionList ());
  }
  },

  ....

  ----------------------------------------------------

  ----------------------------------------------------

  Search in _app method:

  void classname::search (const QVariantList & list)

  {

  QVariant nlist = personDataModel-> data (list.at (0) .toList ()); //
  qDebug()< "list:="" "=""><>
  }

  ----------------------------------------------------
  Results in

  List: QVariant (QObject *, Person (0x857c310))

  That means I can see this list of Person objects, but I have no way to read! How can I get this picture out of the QVariant?

  Hello

  The code looks OK, but the variables are named confusedly.

  QVariant tlist = personDataModel->data(list.at(0).toList());
  

  This line actually returns a first person in the selection list. Where none have been selected,. at() function throws an exception and the application will crash.

  Row is a list of section number, line, etc. Data() method returns a single object for a given row.

  QVariant is a type that can wrap any primitive type, a map, a list or a QObject. It can also wrap pointers to custom classes derived from QObject declared using Q_DECLARE_METATYPE. More details on this here (Qt 5 docs it's should apply as well to Qt 4.8):

  http://Qt-project.org/doc/Qt-5.0/QtCore/qmetatype.html#Q_DECLARE_METATYPE

  Line that you use for the conversion to the person seems correct. To retrieve all people (untested code, but it work, I divide it into several lines for simplicity):

  foreach (QVariant indexPathV, list)
  {
    QVariantList indexPath = indexPathV.toList();
    QVariant personV = personDataModel->data(indexPath);
    Person *person = personV.value();
  }
  

  In the .h file where the person is found make sure you declare metatype its pointer, otherwise that it cannot be used in QVariant except flows manually to / of QObject, which isn't practical:

  class Person: public QObject
  {
    .............
  }
  
  Q_DECLARE_METATYPE(Person *);
  

  Also, I suspect that there could be something wrong with dataModel. If the above does not work, please copy - paste the header file where it is declared.

  If there are compilation errors, please paste entirely including context around them, it could also give us some tips.

  UPD. qobject_cast can be used to cast QObject * to another type (returns NULL if impossible), but is not going to extract a value from QVariant. Use of QVariant .value<>() function instead.

  QObject *x;
  ...
  MyType *y = qobject_cast(x);
  if (y)
  {
     y->...
  }
  

  ...

  QVariant v;
  ...
  MyType *t = v.value();
  

• How to read data from a worksheet to a chart in the form of wave at intervals to simulate real-time data

  Hi I have measured data using a SELF-DIAGNOSIS device and that you have downloaded the log files as a .csv I have attatched below.  I'm trying to read the 7th column of data (RPM) and display it on a waveform graph, read line-by-line to simulate driving real-time data. The interval between readings, I'm trying to achieve is 500 Ms because it is the time interval of readings on the worksheet. I'm finishing the two loops when rpm is equal to zero, as happens when the car is off. I have attatched the relevant section of my program below. Any suggestions would be greatly appreciated.

  Thank you

  Michael

  There are two errors in your block diagram.  First of all, as you read the entire table 2D in all at once (which is fine), you make a clumsy (pardon my language) job to make a line of programming.  Once you take the first line of headers, you have the ideal substrate for a loop, which is made of elements of an array (lines) process, one at a time, using its tunnel of indexation.

  The second mistake is to forget data flow.  The loop, I mentioned, or the While loop you use, produced one at a time and points it at 2 Hz thanks to your expectation of 500msec.  You want to give each point to your chart, but the picture is out of the loop, which means that there is No point until the loop ends.

  Here's an easy Question - where you put the indicators in table of waveform?  [Council - I said that "outside the loop is bad"].

  Bob Schor

• How to read data from 16-bit unsigned IMAQdx?

  I was using my firewire camera to take pictures in unsigned 16-bit grayscale and processing of these data in matlab. However, the data becomes incorrect when the integration time of the camera is great. I discovered that the reasons are: 1, IMAQdx decoded data monochrome 16-bit signed 16-bit, which returns a negative value if the amplitude of each pixel is greater than 32768.  2, IMAQdx automatically adds a constant, which is equal to the amplitude of the largest negative value pixel, to all the pixel values, to change the smallest value to zero, but this process ruin the rest of my data and makes them almost irreversible.  I think the only method could solve this problem is to try to do in labview read image form of unsigned data, but I don't know if it's possible, because it is not optional in IMAQdx manual.

  Any suggestion will be appreciated.

  Hi Hosni,

  FireWire (especially earlier on) had some ambiguities on the endianness, signed-ness and depth of the pixel data that is returned. IMAQdx tries to take the best prognosis for 16-bit data using specific registers defined by the IIDC and other information she can deduct on the camera. However, sometimes these assumptions are incorrect. If you go to the acquiring of your camera attributes tab in MAX, you should be able to replace all these parameters correspond to what the camera expects its data should be interpreted.

  Eric

• How to read data from the memory on the computer that was written by another program host

  Hi all

  This is my first post.

  I am very new to LabView and I just finished 1 Core and Core 2 with no experience of LabView.

  I have a card SilconSoftware acquisition with an FPGA card on it to capture and image of a CamerLink sensor processing. The FPGA is programmed to produce a 64-bit using DMA to the host PC image, and I know the address of the Image. The image consists of two pixels, I would read the pixels in LabView, so I can decode the information.

  How can I do this?

  Thank you _KAL

  I'm not familiar with this specific material, but the easiest is if the camera is compatible with IMAQ. Furthermore, the seller provides a DLL to access the images?

  Mike...

• How to read data from the cell of the table hint?

  In my application, I filled the table hint with database data. Now I want, when I click on any particular line, I should be able to read the data in this row.

  Thank you best regards &,.

  Shrinivas

  Strange, I can see it with different accounts.

  OK, the VI attached.

  Christian

• How to read data from a port PS/2 (keyboard)

  I'm trying to use a bar code scanner that is connected via a PS/2 port. It works similar to a keyboard.

  I have a problem with signals of a PS/2 port, but I don't know any function that could do in LabVIEW.

  Please advice.

  Thanks a lot guys.

  See you soon,.
  Justin

  rapid fire, add a function cancel manual, the appearance, the dialog box option...