FPGA "mean, Variance & Standard Dev ' VI

Similar Questions

• FPGA - windowed moving average, variance, standard deviation, kurtosis and asymmetry

  Hello!

  I'm processing in FPGA and I want to calculate the MOVING WINDOW average, variance, standard deviation, kurtosis, asymmetry online for the last N (N is the size of windows) elements. The frequency is about 100 kHz and N about 10000 (100 ms of signal).

  I found something like EMA (moving average exponential)...

  Have someone solved something like that? Any ideas how to fix?

  That looks like a problem. What type of window you need? The moving average exponential isn't an option? There are online algorithms described in Wikipedia, but they can suffer from problems of numerical accuracy when it is implemented in a fixed point (depending on the nature of the data). They would be interesting watch in, however.

  Other than that, here are some options that I can think of:

  • More large FPGA
  • Be part of the treatment on the RT controller - have - you looked into that?
  • Return to your needs and push some of the numbers. Do you really need 100 ms in all cases, etc.?
  • Depending on the nature of the data, simple compression techniques may be an option
  • An precision analysis to determine the data type minimum, that you really need. For example, getting to 25 bits, would have a huge impact on your cost of multiplier.
  • Consider the mathematics of floating (using Xilinx IP cores) point to online methods. Your flow is relatively low, so you could share it resources between all channels. Manage States of different channels is complicated but is doable.

  The BRAM will be used for FIFO buffers, but is also available for general use to implement the fifo and memories. Some IP use BRAM under the hood, keep an eye on the compilation summaries to monitor how much still you have.

• LabVIEW FPGA on average

  I created a Labview FPGA .vi using a structure flat sequence that shows the output of a sensor at a sampling frequency of 1 kHz on a digital SPI.  After reading, I write the point data fixed in a FIFO, which is read by a host vi and finally written on the hard disk for post-processing.  I need to add logic for the calculation of the average for the further process the signal FPGA vi.  I want to continue at the exit of the original 1 kHz sampled datat to the FIFO, but also perform a sprawl on the steps and write these results at the same frequency of 1 kHz to the FIFO.  The average feature, I would like to implement is a two-step process.  Step 1 is to take samples of 1 kHz and perform an average of 16 samples based frame.  In other words, I want samples of sum 16 1 kHz and dividing by 16 and decimate 16:1, which produces data of 62.5 Hz.  Step 2 is to take 62.5 Hz sampled data and perform a moving average of 16 samples on these data and output resulting at the same sample rate of 62.5 Hz.  I want these 62.5 Hz sampled data to be injected into the FIFA as well as the original data of 1 kHz sampled (unmodified) at the frequency of 1 kHz.

  I've got step 1 work correctly using the block "mean, Variance, StdDev FPGA vi" with number of samples on 16.  This block runs within a sequence of flat sequence structure after I received each sample 1 kHz on the SPI.  My fight is the average feature mobile step 2.  I try to use the code in the screenshot below, but am unclear regarding how/where to implement this logic inside is my structure flat separate sequence while loop, structure of the case, etc, in order to ensure that it only works on one of 62.5 Hz samples to this flow of data at once.  I tried to put it inside the sequence that executes the block average and further in a case that is driven by the Boolean "valid" the average block output.  I obviously don't understand how these different loops run, because it does not work properly.  Can someone tell me how to implement the logic of moving average in my vi FPGA existing to produce the desired results as described above?  Screenshot below of the logic (step 2) average mobile I am trying to use.  In addition, find attached my screws vi FPGA that I need help with is 'CA215_SPI.vi' and the level vi host is 'Host.vi '.  Thanks in advance.

  Joel

  

  This question is closed.  I realized that my approach to implementation was actually working.  I just had a stupid mistake on my fixed point output bit size, giving me results errenous.

• NormalCDF 48GII graphing calculator

  Hello

  I'm trying to use the normal function of the CDF on this calculator to find the area under a curve. I have the average (160), standard deviation (30) and the value of X (100) for my problem. She asked the probability that it is LESS than 100.  However, I can not understand how to put the number in the calculator to get an answer. The user manual says to use "UTPN" so I tried to put UTPN (160,30,100), but nothing happened. I also have a Z value, but I'm not sure where that comes into play in all this.

  If anyone knows how to do that help would be greatly appreciated.

  Thank you.

  Hello

  First, a note on the data - the UTPN function uses mean, Variance and value X. You have the deviation and variance (variance) ^ 2. The entries are 160, 900, 100.

  If you are using RPN, values must be in the front stack execution of UTPN:

  

  Then run UTPN (found also by MTH-> PROBABILITY-> UTPN)

  the answer should be 0.977249868052

  If you are in algebraic mode, enter as you did with UTPN (160,900,100) and you should have the same answer:

  

  Notice now that the calculator provides the answer where it is higher than X, then you need to

  1 YEARS, give a definitive answer to 0.022750131948

  If your calculator is still not give an answer, please answer, perhaps, there are some settings that need to look at.

• Portege 7200 - HARD drive upgrade

  I have a Portege 7200. It was just given to me. There is therefore no documentation or manuals.
  I'm interested in upgrading his old 4 GB HARD drive to something more modern. Can someone tell me what could be done to it? I mean - if standard 2.5 "HDD is Ok, is there a limitation of the motherboard/BIOS card as to the maximum size, etc.. ?

  Thanks in advance!

  Hello

  The manual can be downloaded from the Toshiba European page;
  http://EU.computers.Toshiba-Europe.com/cgi-bin/ToshibaCSG/JSP/home.do?service=EU&from=http%3A//www.Toshiba-Europe.com/

  Here, you should go to support downloads & -> user manual for Toshiba.
  In the upload form, you must choose;
  Archive-> Portege Archive-> Portege 7xxx--> Portege 7200

  Maybe you will find some info in the user manual.

  But I want to provide some details too.
  To my knowledge, several versions of BIOS supports a HARD drive size limitation. I mean that not every size of HARD drive is supported.
  I have goggled a bit and discovered that the Toshiba MK1214GAP HARD drive can be used with the Portege 7200. It s a 12 GB HARD drive that supports ATA-2/ATA-3/ATA-4 interface.

  Maybe you could test it.

• Replacing the drive HARD on Portege R400

  HI people,

  Can someone point me to a disk for the R400 replcacement? Those listed on www.topazsupport.co.uk is horribly too expensive, of course, I'm looking for a drive 1.8 "standard that fits this model.
  I noticed that the current HARD disk has a female connector while the disks hard most seem to have a male (I say "appear" because nobody seems to actually have real pictures of their readers for me to know)!

  Thank you

  Ferg.

  According to specification for laptop, your laptop has 80 GB 1.8 inch PATA HDD.

  To be honest I don't know what to do, you mean with standard HARD disk. The fact is that you must use compatible HARD drive for your laptop model. According to the specifications of the laptop, you can use disk TOUGH MK8007GAH. In my opinion, you need replace HD with the same model. So you can be sure that everything will be OK. I think also a capacity of 80 GB is sufficient.

  I found nice pictures for you:
  Here is the image of HARD drive
  Here you can see connectors

  At the end, I must say that replacement of HARD drive seems easy but these hard drives 1.8 are more sensitive and pressure on the wrong spot can damage the HARD drive and data may be lost.

  Do you want to replace one?

• Equium A60-173 PSA67E: WLan card supports the Orange Livebox router

  This is my first post so please accept if he is not writing to apologize.

  I have the laptop above and would like to know if it would be compatible with a wireless network card to connect to my Livebox Orange router?

  Thanks in advance.

  Neil

  First of all, are you sure that your laptop is equipped and supplied with the internal WLan card 100%?
  I m not sure but I think that this phone does not support the Wlan?  :|

  In any case, if the minPCI wireless network adapter is not available, you can use an external WLan solution as a key USB WiFi. These sticks are cheap and easy to install.

  I talk to you I recommend checking out the Livebox Orange router specifications. You know what Wlan standard is supported. You know the Wlan standards?
  I mean the standard 802.11 A, B, G or N most recent standard

  B and G standards are best known and no longer supported.

  Well well, to cut this story; You must use the card/WLan USB WLAN which supports the WLan standard even as your WLan router ;)

  Good bye

• How to create a large group of tables of all different lengths

  Hi all

  I want to create a 2D array that has two coloums and X number of rows (possibly in the hundreds). The first coloum must have a calculated average for this line. The second coloum should have a gap with the average assosiated. I struggle to get to this point. I know how to aqquire the set of values that should be considered for each mean and STD and I also know how to calculate the average and std.

  A loop will tell me what is the value of tag and which line in X put in. I want to be able to have the X number of tables each representing a row with values before calculating the avg and std. Each table would be of a different duration.

  I don't know how tag on the unique values of the loop to the appropriate line to create the Group of X tables.

  The only way I can think to do is the initialization of a 2D table large exessvly and replacing the first available null in the row with the value form the loop. Then only, I wouldn't consider zeros when I do the final 2D picture. What I don't love about it, is that it would be exesive and it is possible that there wouldn't be enough zeros for all the values that I wanted to consider in a specific line.

  I do not want to calculate averages and STDS for every line, every time I have add a value from the loop either. That would allow me to pass the table groups but would also slow the program. Can someone give me some advice on how to run this? Thank you in advance!

  MechaCool

  Use a cluster.  In your case, the cluster contains a data table and two digital inputs for the mean and std dev.  Look at the joint.  I created a control of Type Def the type of data I think you want.  In vi, you can see how to use the cluster to write your data.  For multiple series of data, you would have a picture of this cluster.  Each could have an array of different lengths and his averages dev partners and STDS.

• IMAQdx multi-camera systems: shortcuts for composite image sewn

  Imagine a system using for example multiple GigE cameras through IMAQdx interface where we want to be a stitched composite of multiple camera views. The principle of sewing is naïve, simple concatenation, one next to the other.

  The problem is that, when it is trivial to build a composite image, it is difficult to do this very effectively. Image sizes are large, tens of millions of pixels, so that each copy of questions. Configurations material alternative would open many options but say we are stuck using GigE cameras and (at least initially) the IMAQdx interface. What are the tips or even hacks, you guys can imagine facing this challenge?

  I've seen some talk about the IMAQdx capture buffers and it seems to me that one can not manually allocate these buffers or access it directly. The absolute best scenario would obviously be to hack your way around to spread the image data next to each other in memory, sort of as follows in scenario1.png:

  

  The foregoing, however, don't seem to be too easy to achieve. Second scenario would be to acquire in the individual buffers and perform one copy in the composite image. See the illustration below:

  

  Interfaces usually allow this with relative ease. I have not yet tested, but based on the documentation using ring acquisition of buffer and "Extracted IMAQdx Image.vi" this should be possible. Can anyone confirm this? The copy can be carried out by an external code as well. The last scenario, without ring buffer, using ' IMAQdx to Image2.vi ' might look like this:

  

  The second copy is a loss for this scenario should be out of the question.

  I hope this makes some. Want you magicians say about this?

  Unfortunately he has no concept of a "sub-image" where you could have acquired acquire seamlessly in an image that represents a region of a larger image. However, you are right that the acquisition of the ring with the extract is the way to remove a copy. In this mode, the user allocates the internal buffers imaqdx uses by means of standard images, and then they can access those without copying directly. You can simply extract the image of each camera (zero-copy) ring buffer, then use the VI ImageToImage to copy a region in your larger picture (a copy).

  Eric

• Build a data table in a Subvi

  OK first of all, I will say that I am very new to LabVIEW.  I only started using it last week.  I'm used to other programming languages, so if I use a terminology that is not common to LabVIEW, I apologize.

  What I try to do is to collect temperature data and determine when it reaches steady state.  I collect data from a thermocouple USB DAQ in a loop with a user defined number of iterations.  Each of these iterations will in a table.  The mean and standard deviation are calculated from this table.  Everything I say is done inside a while loop and the standard deviation is low enough for the while loop ends.

  It works perfectly, but, there is always a but, I wanted to turn construction calculations, an average and standard deviation of array in a Subvi so that I can use it sometimes as steady state is a big part of what I test.  Also in this way I don't have to have the data table appear on the front.  The question that I try to convey the DAQ data in the Subvi.

  No matter what help do this, or suggestions on a more elegant way to determine the State of equilibrium is greatly appreciated.  I have attached the VI in its intact form and a JPEG of it with the part I want to put in a Subvi converted (boxed) in red.  Hope this is enough information and if you have any questions, concerns or suggestions, do not hesitate to post.  Thank you.

  -Kyle

  

  You take a single measure by the loop iteration, so to convert dynamic data to a single scalar rather than a table. Now you are left with a 1 d table after the loop and this whole mess to remodel is no longer necessary. All you nead is the Subvi to SD and the average which comes with LabVIEW and so you already have.

  You have a lot of conversions. "itérations" and "numeric" should be I32 (right clic... representation...) I32)

  This sequence of rube goldberg comparison is stupid. All you need is a single comparison "SD".<0.005" and="" wire="" the="" output="" to="" the="" loop="" termination="" condition.="" (btw,="" there="" is="" also="" a="" primitive="" for=""><>

  Seems silly to write all the raw numbers to a file every 10ms. It is probably enough for the 'means' in a log file.

  Why do you not use acquisition of single point and a loop FOR. You can not make an acquisition of hardware timed with points N and dT data, eliminating the loop FOR entirely?

• Sustained change devices after submit?

  I just submitted a BB10 app and selected 10 BlackBerry like devices supported, assuming that it would mean also the Dev Alpha... but after reading the post to blog about it once again, I noticed he includes not alpha Dev, I need to compile a completely separate version just to go through the process and check the dev alpha?  Seems a bit ridiculous because none of the code has been changed.

  You can change this by going to the provider Portal > Products manage > click it below '+' where you add versions (this is a search icon), and then click the version you want to edit > then click on add new version version tab > change accounting and save. It should work I did for a few apps I had not know if it works for QNX although BBOS

• Re-locate personal data of different Volume?

  We will find a background for this question to "http://answers.microsoft.com/en-us/office/forum/office_2007-outlook/outlook-2007-pst-file-does-not-compact/2753e675-c44e-42a2-9890-9de1bb2e1d2d" where he had drifted off topic and has not responded.  This may be a more appropriate place:

  In Windows 7 I would like to re - locate in the form of a "Standard user" very personal data as possible to a HD volume separate from the system volume.  (There are at least two reasons for this: 1) more easily back up data to personal and easy system restore from an image backup or reinstalling Windows.  2) implementation of software restriction policies if the 'Standard user' can only save/edit data on a volume of user data and can only run the software on a system volume.  (Other installed software would go also on the system volume).  I had managed to accomplish something like this in XP SP3 by moving my limited user "s"Documents and Settings"(I don't remember how), including my user profile with Outlook PST file and the My Documents, my pictures, folders etc. on another volume.  Now, I'm the migration to Windows 7 and eager to make more or less the same thing in sanctioned way.

  In the referenced thread Palcouk had warned me as follows:

  > I didn't know security advice which suggests to store data on drive them without winning

  You can redirect the win7 to another internal location libraries, a simple documented procedure.

  There are methods found by a Google/Bing search to locate the user folder to another location, they are not supported and will result in various problems

  I tried to learn how to use libraries in Windows 7 to effectively move the various personal data files (for example, My Documents, my pictures, etc.).  There are a few cookbooks for this as 'http://www.techsupportalert.com/content/how-move-windows-7-personal-folders-my-documents-another-drive.htm '.

  There are also methods out there to move the Outlook PST file to another volume, such as "http://slipstick.com/outlook/config/to-move-an-outlook-personal-folders-pst-file/".

  There are not even in the entire relocation of a user profile (or something less ambitions) to "http://www.sevenforums.com/tutorials/87555-user-profile-change-default-location.html".  I guess this includes Outlook. PST file, e-mail accounts configured, etc. ?

  Finally, I've seen instructions to move all of the Documents and Settings to another drive at the end of the thread of Technet next: "http://social.technet.microsoft.com/Forums/windows/en-US/6f6a14a7-bc47-494c-8d12-3328a9a11285/how-to-move-documents-and-settings-and-all-libraries-to-d-drive-to-separate-from-the-os?forum=w7itproui."  If it means the same thing in Windows 7 as in Windows XP. It seems to encompass all of the above for all users!

  So my question is, are at - it methods above is legitimate (they are certainly tempting in my case!), or what goals do I give up?   -JCW2

  Move the folders user as shown in the two articles is as says not supported by MS and cause other problems

  With outlook closed you just move the pst data file to another internal location, outlook will complain when you start, just browse to the new location

  Win7 is a completely different animal to Winxp shouldn't happen to related processes you implemented in Windows XP, it is not necessary in win7

  Depends on what you mean by Standard user

  Create a second account admin (of security)

  Outlook and other software requires full permissions to make it work

  Location of data on a no drive location of victory does not backups of data easier, its not different to the data in the default location

• Upgrade to a Dimension 3100

  This made the point before, but not all the elements of my question.

  I want to improve a dimension 3100 (given as a gift)

  so far I bumbed the RAM upward from the supplied 512 to 2 GB, but I also want to add a graphics card - the MoBo has of 2 slots for PCI-x and PCI-E (x 1) slot.

  the card I was recommended is a Geforce 6200 256 MB that fits into the card PCI-E x 1 slot, however I've also seen a Geforce 8400GS 512 MB which would fit in the PCi slot - however, like other similar cards, it requires an external to 400W power supply and the 3100 is came only with on board to the 230W PSU so I also need to upgrade my power supply of the appearance of things.

  http://UK.answers.Yahoo.com/question/index?QID=20100115193805AAhwY3h

  After doing some research, it seems that the 3100 is one of these small valleys with a layout of wiring owner which means a standard PSU won't work - my question is where can I source a compatible power supply for my computer? or can anyone recommend a better graphics [PCI or PCI - E (x 1)] which requires no extra power.

  Thank you very much

  zougathefist

  The Dimension 3100 does not use an exclusive power of Dell.

  The 3100/E310 has an open back panel, you can install more generic stock ATX power supply standard, with a 24-pin or 20 + 4 pin connector card mother main, with or without the power switch power switch and two SATA power connectors.

  You should be able to buy in a store of the local computer.

  The instructions for the replacement of the power supply are HERE.

  NOTE from the ADMIN: Broken link has been removed from this post by Dell >

  Bev.

• How to check and change settings update to Acrobat DC?

  I just installed Acrobat CD player after a break of several years of Acrobat products. So far, I like what I see. I look in the preferences for the parameters of update, but I see nothing. Is it possible to see which are the default update settings and change?

  DC is a little the version number, so we have Acrobat Reader (free) DC, DC and DC Pro (paid) Acrobat Standard Acrobat and Acrobat DC (which means either Standard or Pro, but not drive).

  CD player is configured to automatically update and without asking, so it is always up to date. Doesn't seem to be an option, I think that Adobe don't really want to give people the choice to ignore the vital security patches.

• Error (VMDB) - 45 transportation: failed to connect to peers

  Hello

  I use ESXi 5.5, build the 1281650.

  I'm having the problem of not being able to start a virtual machine without the following message

  Error (VMDB) - 45 transport: unable to connect to the peer.

  Power failure on ' / vmfs/volumes/51a6288d-06384dd1-6fd5-089e01a03cd5/test/test.vmx'.

  There are currently 5 VM. 1 of them is running and that is fine, but I'm afraid to turn he took alarming he can't get back to the top.

  The above product error even when I create new machines.

  In total, I have 3 of these ESXi installation, all running on the same hardware and same build.

  Only difference I can see right now is that the analytic server in General, there is no profile image, it is empty. My w another job server ESXI-T show. T.0 - 1331820 - I don't know if this means anything standard.

  Any help will be appreciated.

  Kind regards

  Diggin' deeper I found in the event journal "the ramdisk file table is full."

  around googleing showed the error message tells me that I must release some inodes to ensure that there is free space. Don't know what I wanted, but I had to remove several snmp files.

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2040707

  This seems to have solved my problem.

  One thing that I do not understand that is that before deleting snmp files the vdf h showed lot of 53% root. There was still space left for machines should always start up.

  Now it is 1%.

  Thank you