Similar Questions

• Calculate the speed of the target by using photoelectric sensors 2

  I use 2 photoelectric sensors mounted parallel to each other. As the target passes in front of the sensor, the signal of output voltage goes from 0V to 10V. Because I know that the distance between the sensors, I need to use the difference of rise time of the signal between the sensors to calculate speeds. I can do that when I export the data to excel, but I would do it automatically into my LabVIEW code.

  The data of my sensors are the type of waveform. I can extract the waveform (t0, dt, Y) components using 'Get waveform components' and then look for the timestamp for each value using t0, dt and index value. I need to calculate the timestamp of each sensor once the signal passes to 10V (Y = 10V). I can't extract the components of waveform for signals from sensors (seems to only be able to extract the components for a sensor) and once I extracted components, setting up my calculation of the speed. I think I need a case structure to save the timestamp, once the signal hits first 10V (if Y = 10V save timestamp; if Y = 0V continue indexing of values).

  Any suggestions on the extraction of components of form of wave or indexation of values and calculation speed are greatly appreciated! The code I wrote to collect signals is attached.

  Thank you very much

  Alberto M.

  Here is a sample of the signals of the sensor showing the difference of signal rise time.

  

  1. you must use the finished sample mode and read all samples.  To match what you have, I would use 10 k samples.  That would be 5 seconds worth of data.  This eliminates the need for the while loop and gives you the full waveforms.

  2. just use the base trigger level detection VI (in the Signal Processing-> measures of waveform-> palette of Waveform Monitoring) to get the time for every rising edge.  Then it's a simple subtraction and divide.

  

  In addition, if you want to make things even easier, you could have used a camera with a meter of A - B.  Then the meter gives you just the time difference directly.

• measure the speed of the fan in box vibration Simulator

  I'm trying to measure the analog speed towards the sbRIO

  I get a few signals pulse switching to 5v to 0v and vice versa with variable duty cycle...

  How can I calculate the speed of the fan

  values provided on the box of Simulator are

  Tach 2 pulses/revolution

  the maximum speed is 6,000 rpm

  Please help me with this...

  Did you look at the examples of LabVIEW? If you have installed the OR-DAQmx driver, you will find many examples showing how to do the counting of events or measures of frequency.

• I can load the speed in real time?

  Hi, guys.

  I'm working on my project now. Right now I use PCI 7344, UMI-7764, AC/DC motor sevro, their amplifiers and the camera of the UAB.

  I try to repair the braiding point machine to weave leadership x. usually the Plait point oscillates around a point in x direction.

  At first, I need to get the position of the point using cam USB, I've done braiding. The positions I got the cam of the UAB is in real-time.

  Then, I need your comments the position of the motion control loop. I intend to use the position to calculate the speed that responded to the questionnaire, which is real-time, too.

  Engine going this speed. Thus, it is supposed to get that engine will decrease or increase depending on the weaving point moving.

  I don't know if we can do it. I have yet found the relative position.

  Anyway, thanks in advance. Any idea and the idea is really appreciated.

  Guangli

  Guangli,

  as the camera of feedback is coming from a USB camera and with the during the calculations necessary to analyze the images, the behavior of your system in real-time is probably not very tight. Delays and jitter of the additional movement control operations are probably in the same order of magnitude as the delays and jitter, introduced by processing the image. If it's okay with you, can do the following:

  1. Load a maximum travel speed and acceleration/deceleration of the values for the axis
  2. With "Load Velocity override", you can pass the speed between 0 and 100%. Transitions of value axis a velocity to the adjacent spire to the value of the acceleration that you defined before.
  3. If you need change the direction of travel, you need to use 'Load speed' and 'Motion to start. " This operation is much longer that a speed of loading a substitute value, but in general you should not call this sequence too frequently.

  I hope this helps.

  Jochen Klier

  National Instruments

• How to measure the speed of the funnel without the closed loop of the report?

  We seem to be in trouble, we want to move to 10 Eloqua and/or get the closed loop, tool of reporting, but we have to wait. However, we still really need to be able to measure our funnel and speed into the funnel. So did he do this without the help of eloqua fancy reporting tools?

  To calculate the speed you need two things:

  (1) steps defined

  (2) a date stamp for each step, you're trying to follow a long time.

  I've seen customers calculate the funnel using their CRM speed by writing a date to a field on the contact record and then report on these dates.  For global directional numbers I've seen customer on created lead report / month, then had a date on the contact record to identify SAL in a period of time, following by pointing out the standard option.  This is not one to one, but can provide valuable guidance.  To be precise and complete the picture, you would need MQL dates and SAL on the contact record, and your opportunity process will need to have associated contacts.

  On the product side, income Suite is available on E9.  No need to wait.

• Reading loop DAQmx only reaches the speed of Communication series

  Hello everyone,

  This is my first post in this Forum. I have a program with 4 loops, 2 separate and 2 connected by a queue. The first loop (see attachment loop PID) runs at maximum speed, the second a (serial communication) works at maximum speed (very slow because of the speed of series).

  To find the error I deleted from the queue to get 4 separate loops. The loop with the calculations (calculate loop) now also runs at the maximum speed, but the analog read loop just past the loop of serial communication speed. On the inside of the Sub - VI is just the configuration for the DAQmx with internal sampling. I have no connection between the loop of serial communication and analog playback loop. Is it possible that the DAQmx is slowed down because of the serial communication? Serial communication also uses a windows DLL.

  I hope you can help me.

  Best regards

  Jannik

  Thank you for your quick response. I found the answer, I guess that: I deleted the Subvi and the use of the DAQmx in the loop directly, it has worked. I think that the Subvi took too long because of the additional options to run at 1 kHz.

• Calculate the material database

  Hi all

  I'm new Oracle DBA in the industry, not a lot of experience in the database. I have some confusion. Maybe it's stupid question but this turning point in my mind. Please help to solve these.

  (1) for new projects comes, I'm confusing all cache/RAM required and CPU. Although I can calculate the capacity of the hard drive.  for example - my Application user say we have total TPS (transactions per second) is 1000 (200 update, delete 300, 100 and 200 insertion selects), so in this case how can I calculate hardware capacity, and how I can answer for them.

  (2) this is the reverse of the first question.  Suppose a database running, and everything works fine. I want to calculate the GST (transactions per second). means how select/update/insert/delete running in the second. How to calculate or identified TPS.

  Thanks in advance...

  Reg,

  Hard

  Thank you all, I got my answer...

  Oracle Capacity Planning

  Introduction - Database management

  The best way to perform the Oracle capacity planning is with planningsof the worksheet of the ability of the Oracle. Database management has increased over the years to the simple management of a few tables and indexes to a complex of interlocking responsibilities ranging from management of objects of database to participate in decisions large enterprise on hardware, software and development tools.

  In order to fully discharge these functions the modern Oracle DBA needs one big together skills. In the last hours, we will discuss the skills needed, and specifically how they apply to an Oracle DBA.

  Capacity planning system

  In a green field operation (the one where you're here in front of the equipment and the database), a DBA will have a critical role to play in planning and configuration of the new system. Even in existing environments the ability to predict new servers, new databases, or improvements to existing databases and systems is crucial.

  Essentially the DBA should be concerned with two main questions:

  1. Get enough server to ensure an adequate return
  2. Sufficient backup and power of recovery for backup and restoration carried out respecting the time constraints required.

  All this is actually under the heading planning resources and capabilities. Resources and capacity planning Oracle is a database intensive resources system. The more CPU, memory and disk resources, you can provide Oracle, better it performs. Planning with Oracle resources becomes more a game of "How can we afford to buy" instead of "what is the minimum configuration. A minimally configured Oracle server won't work effectively. Specification of resource for Oracle In the specification of resources, there are several questions that should be answered.

  1. How many users will use the system today and in the future?
  2. Data will include the system contain both now and in the future, we don't know the growth rate?
  3. What response time are expected?
  4. The availability of this system is planned?

  Why are these issues important?

  1. How many users will use the system today and in the future?

  This issue is important, because it effects how much processing power is going to be necessary. The number of users will determine the number and speed of the processors, memory, the related network configuration size.

  1. Data will include the system contain both now and in the future, we don't know the growth rate?

  This issue is important because it determines the disk needs, how much storage will need to take the data we have today and how it will be necessary for the growth. The answer to this question also allows to determine how much memory will be needed.

  1. What response time are expected?

  This question is important because it pushes the number, type and speed of CPU resources, but also of network problems. He will lead also issues such as the number and speed disk configuration disks, number and speed of the controllers, disk partitioning decisions.

  1. The availability of this system is planned?

  This question is important because the availability of the system grows the type of RAID (1, 0, 0/1, RAID5) configuration, the type of scheduled backup (cold, warm) and parallel server problems. Requirements change if all that is expected is the system to be available during business hours from Monday to Friday, or if the system is supposed to be available 24 X 7 seven days a week. This also leads the type of backup media, be it a single tape drive is all that is necessary or is it a hi-speed, tape-stacker, multichannel, solution based silo?

  To properly perform a capacity planning cooperative efforts should be made between system administrators, database administrators, and network administrators.

  Step 1: Size of the Oracle database

  A starting point for the whole process of capacity planning is to know how many and what size, databases will be based on a given server resource. The physical size of the tables, indexes, clusters, and LOB storage areas will play an essential role in the sizing of the overall database, including areas of shared global memory and disk farm. DBAS and developers must work together in order to properly size the physical files of the database. The design of the database will also lead the placement and the number of storage spaces and other resources of database such as the size and quantity of newspapers of recovery, rollback segments and their associated buffers.

  Typically areas of buffer of data to an LMS database block size out to between 1/20 to 1/100 the physical sum relative to the total number of database file sizes. For example, if the physical size of the database is 20 gigabytes the database block buffers should on about 200 megabytes to 1 gigabyte in size depending on the how the data is used. In most cases the LMS shared pool would be size out to about 20-150 megabytes maximum according to the usage model for the common areas of SQL (see next lesson). For a system of 20 gigabytes the redo logs would most likely run between 20 and 80 megabytes, you want mirrored volumes and probably not less than 5 groups. The pad of paper to support a 50 megabyte redo log file would be a minimum of 5 megabytes may be as large as 10 megabytes. The last major factor for BMG would be the size of the sorting box, for this size of a database, a sort of 10 to 20 megabytes field is on the right (according to the number and size of all kinds). Remember that sort areas can be a part of the shared pool or a part of the large pool, so we'll cover in a future lesson.

  So on that basis we've determined? Gives a choice of 400 megabytes for our size memory buffer of data block, 70 megabytes for the shared pool, buffers of the newspaper of 4 to 10 MB (40 MB) and a size of 10 megabytes sort field. We look at a megabyte of 500-600 LMS with the important factors of non - DBA added in. Since you are not supposed to use more than 60% of the physical memory (according to the interviewee) it means w will need at least a gigabyte of RAM. With this size of database a single UC probably won? t give enough performance so we are probably looking at least a 4-processor machine. If we have more than one instance installed on the server, the memory requirements will increase.

  Step 2: Determine the number and Type of users:

  Of course, a database of a user will require fewer resources than the user database of a thousand. Generally, you will need to take a LOOT at how many memory resources and drive each user will need. An example would be to assume that a user installed 1,000 users base, only 10 percent of them at the same time will use the database. That leaves 100 concurrent users, those who perhaps a second 10 percent will do the activity requiring sorting areas, this brings the number up to 10 users each use (in our previous example) 10 megabytes of memory each (100 MB). In addition each of the 100 users simultaneous need about 200 k of space (depending on the activity, BONE, and other factors) process so there is an additional charge of 20 megabytes just for the user process space. Finally, each of these users will require probably some amount of disk resource (or less if they are client-server or web-based) let? s give them 5 meg of disk to start each, which adds up to 5 gigabytes of disk (give or take a meg or two.)

  Step 3: Determine the hardware requirements for the required response time meet and support of user Support:

  This step is the system administrator and maybe the seller of equipment. Given our mix of 1000:100:10 users and any required response time numbers, they should be able to configure a server that will obtain good results. Usually, this will require several, interfaces multi-lane disks and several separate physically the drive bays.

  Step 4: Determine the material backup to support the requirements of availability required:

  Here again the admin system and hardware vendor will have a helping hand in the decision. Based on the size of the disks and the speed of the maximum recovery time backup solution should be developed. If there is no way to meet your requirements of availability required using backup schemas simple more esoteric architectures can be specified as strips of multiple channels, hot databases in standby or even Oracle Parallel Server. Let? s say we need a requirement of availability 24 X 7 with instant failover (no recovery time because of the critical nature of the mission of the system). This type of specification would require Oracle Parallel Server in a configuration of automated failover. We also use either a double or triple mirror on disk so that we could divide the mirror to perform backups without losing the protection of mirroring.

  Let? s compile what we have determined so far:

  Material: 2-4 CPU (for higher-speed CPU we can) with at least 1 gigabyte (preferably 2) of RAM shared, at least 2 disk controllers each with many channels, 90 gigabytes of disk resource using a three way mirror to give us a matrix to mirror a triple 30 concert. The systems themselves should have a sufficient internal disk subsystem to support the operating system and the swap and the requirements of pagination. Systems must be able to share the disk resources so should support clustering. High-speed tape backup to minimize the folding times mirror.

  Software: Oracle Parallel Server, Cluster, the network management software, software backup management software to support backup material.

  Capacity and resource planning is not an exact science. Basically, look for a moving target. Dual Pentium II 200 NT Server with 10 GB of 2 GB SCSI disks for $5 k, I bought 2 years ago has a modern equivalent in the Pentium III 400 with the builtin 14 concert my father-in-law just bought for $1 k. At the time where we specify and purchase of a system, it is already replaced. You should insist on power substitute options more effective, more inexpensive they are available during the phases of specification and procurement.

  Reg,

  Hard...

• How to increase the speed of Insertion

  We have some aTransaction table with a daily volume of 10 lakh.

  There is a sr no column don't based on certain groups (serial numbers of storage while storing the same within the Group and using it for the treatment of transavtion.

  Currently created an index on the column group and in insert statements, we by using a subquery to check the serial number max and increasing in the next.

  Please suggest the best way and to approach and get the speed on integration

  SA123, just a reminder to the Oracle read model of consistency that default writers blocking not the readers and all the readings are a consistent point in time.  The net effect is that there are many posts in the past where developers who were to get the maximum value of the target table do not understand why their application is either get ORA-00001 errors (duplicate key) or when the value was not not a single key to end up with duplicate values.  When there is simultaneous DML sessions that time question at the same time, then the two session will get the same point in time and see the values of data at that time there at the time.  Meeting A updates the row but Session B sees the same prior value and then does its update by using the same value resulting in data incorrect or a value in double feature of indexing error.  You won't have this problem if you have only one update process, but it is a potential problem, if you have concurrent updaters.

  - -

  Therefore, single-threaded access in some way.  Select update would be one of the approaches and locks user (dbms_lock) would potentially another.

  - -

  Are you really working with a sequence in a groupID then if the chances of any two sessions simultaneously access the same group id is low so a select for update on the groupID you would manually calculate and provide the value of SrNoo with a low impact on scalability, providing the GroupID SrNO is indexed and there are only a few SrNO values by group.  However, why not just use a sequence and order lines in a SrNo by GroupId?  Which would eliminate the need to interpret the existing lines of SrNo on insert and save, you work on each insertion.  That what you are looking for better performance, this seems to provide the appropriate functionality.

  - -

  HTH - Mark D Powell.

• Having more than one user affect the speed of my MacBook Pro?

  I have a MacBook Pro, which is now painfully slow 2011.

  I have three users each journal entry/exit in the required form.

  Having more than one user affect the speed of the Mac or not?

  Thank you

  If you open a session there should be no impact.

  You can view a report of etrecheck for more Analytisis

  www.etrecheck.com

• What is the speed of the hard drive of the 2015 2 and 3 to merge disks partition?

  I was looking through the Apple site and was wondering about the speed of the drive in the iMac in car merger. On their site it says that the 1 TB Fusion drive has 24 GB of Flash memory, and 2 models to and 3 to have 128 GB of Flash storage. But it does not say what the speed of the hard drive partition, which is what I want to know. It is 5400 RPM, or even 10000 rpm or 7200 RPM? I don't know, but I want to know. If anyone here knows the answer to this question, I would appreciate a response. Thank you.

  I have seen it reported that the Fusion drives are all 7 200 RPM.

• Software updated 2 days ago. He stuffed the speed up to a point, I had to borrow someone's HP to complete a task. Very disappointed

  I updated my software for macbook pro 2 days ago, which has been for his security etc.

  After the update my macbook snaps every minute and the speed it exceptionally slow to a point as I sit for 5-10 minutes waiting to open finder or safari to open. This update plush speed of my macbook. He now works at all. Display and all that remains is very good.

  I have an important assignment due this Friday, fortunately someone lent me their HP to complete my task.

  very sad and disappointed with this, Apple.

  Please provide a solution.

  Thank you

  kitss

  Download and view a report of Etrecheck:

  http://www.etresoft.com/etrecheck

  Ciao.

• Calculate the average per slot?

  Hi Chaps,

  I am a beginner on numbers (almost everything on Mac I would say) and I need help to calculate average values.

  These are calculated values (column 2) taken on a specific time of the day (column 1).
  I managed to create a third using a built-in function to get the time slot (column 3).

  14:58:42	235	14
  14:59:42	274	14
  15:00:50	7937	15
  15:01:55	5157	15
  16:02:57	1822	16
  16:03:57	207	16

  Can please somebody see me step by step how to calculate the average by time slot as below?

  14	254,5
  15	6547
  16	1014,5

  Kind regards

  Stone

  This can help you

  

  Assuming you data in a table named 'Data' and the information is summarised in another table (right) named "Summary".

  Select cell B1 in the summary table and then type (or copy and paste from here):

  = SUMIF(Data::C,a1,Data::B) ÷COUNTIF (Data::C, a1)

  shortcut for this is:

  B1 = SUMIF(Data::C,a1,Data::B) ÷COUNTIF (Data::C, a1)

  Select cell B1, copy

  Select column B, paste

• I want you to help because the phone asking me to become a frequent and annoying enter a password to calculate the icloud

  Hello

  I want you to help because the phone ask me for becoming a frequent and annoying password to calculate the icloud, and I do not know because I bought a phone from someone else is not new Hama is on the phone (*) No. account. IMEI (*) Please help me soon thank you

  < post branched out by host >

  < personal information under the direction of the host >

  Robert Odamat says:

  Hello

  I want you to help because the phone ask me for becoming a frequent and annoying password to calculate the icloud, and I do not know because I bought a phone from someone else is not new Hama is on the phone (*) No. account. IMEI (*) Please help me soon thank you

  < post branched out by host >

  < personal information under the direction of the host >

  Find my iPhone Activation Lock - Apple Support

  There is nothing you can do to get around activation icloud blocking without recovering the former owners information.

  Communicate with the person that you bought the phone.

• Fake screenshots on links youtube video and the speed of the links dials.

  Firefox displays wrong pictures on video links and also wrong dials for the speed dial add-on. Problem goes away after focusing on the problem of link.
  If restore system - everything very well. If then updated firefox and (or) flash - problem reappears.

  Thank you!

  Start Firefox in Safe Mode {web link}
  While you are in safe mode;

  Type of topic: preferences #advanced< enter > in the address bar.

  Under Advanced, select General.
  Find and stop using hardware acceleration.

  Search web sites secure. Are there problems?

• Will the 'flights climbed' work and calculate the altitude of an aircraft?

  I'm going on vacation soon and everything I just want to know my iPhone 6s will calculate the flights climbed when the plane is in the Air?

  You will be on a plane with steps?