Detect the shift in two consecutive low contrast images

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• Table 1 d with rejection of the two consecutive points

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• Measure the time between two digital pulse

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  I hope this helps.

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• variable sharing, missing data, the timestamp even for two consecutively given

  Hello

  I have a problem with missing data when I read a published network shared variable.

  Host VI:

  In a host of VI on my laptop (HP with Windows XP Prof.) I write data to the shared Variable 'data '. Between two consecutively write operations is a minimum milliseconds of wait time. I use it because I want to make sure that the time stamp of each new value of data is different then a preview (variables shared the resolution is 1 ms)

  VI target:

  the VI target cRIO-9012 bed only of new data in the way that it compares the timestamp of a new value with the time stamp of the last value on a device in real time.

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  To summarize, the missed value is written to the variable shared host, but ignores the target because its timestamp is wrong, respectively the same as the last value, despite the host waits for a minimum of 10 milliseconds each time before writing a new value.

  Note:

  The shared Variable is hosted on the laptop and configured using buffering.

  The example is simple only to display the function of principle, in real time, I also use a handshake and I guarantee that there is no sub - positive and negative.

  Simplified example:

  

  

  Question:

  Anyone has an idea why two consecutively data can have the same timestamp?

  Where timestamping (evil) Finally comes (System?)?

  What would be a possible solution (for the moment with shared Variables)?

  -> I tried to work around the problem with the clusters where each data gets a unique ID. It works but it is slower that comparing the timestamps and I could get performance problems.

  It would change anything when I animate the shared on the RT System Variable?

  Thanks for your help

  Concerning

  Reto

  

  This problem has been resolved in LabVIEW 2010.  You can see other bugs corrections in theReadme of LabVIEW 2010.

• How to program the shift register to play only when a new user is detected user?

  Hello

  I'm currently developing a program of position control in labview. The program is quite simple, in which case the user will enter the distance on which he wants the table in the labview program and labview will send the signal to move a motor that will turn a ball screw to move a table horizontally to the targeted position. The criterion is that the profile of the engine depends on the distance to move, if a biphase (acceleration and deceleration) or three phase (acceleration, steady speed, deceleration) to reach the position of the target.

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  Is it possible that I can delay the reading of the shift register only when a new entry is detected or there at - it another way for me to achieve what I want?

  I tried searching the forum site and neither discussion but could not find similar problems. Thank you for your help in advance.

  As I understand it, the use of shift registers with a structure of the event (to detect a user event when the user enters a new value) should solve the problem. Do not forget to post your request (or a version of it that isolates the issue) when you arrive at the lab, if we can get a clear visual of the issue you are facing.

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  The title says it all really.

  I was connected and working normally for about an hour this morning, until suddenly the connection has been lost.
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  original title: vista detection network but will not connect

  Hi JulianBeach,

  1. you have made no changes to the computer before the broadcast took place?
  2. What is the exact error message you get?
  3 is connected to the domain of the computer?
  4. what happens when you try to connect to the network?

  Try the steps from the following link:
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  Hello world

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  See all screenshots

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