Proper Ni daq for ICP sensors

I am trying to read force data from a triaxial force sensor (type 260A03) by PCB piezoelectronics. it is ICP sensor, so my readout device needs to provide a constant current exciation for the sensor (2 to 20 mA for 20 to 30 VDC). I have already compactRio modules NI 9205, NI 9401, and NI 9802 available.Wonder if I can use this to read data from my triaxial sensor. If not, what are my cheapest options?
Thanks

You wrote:
Wonder if I can use this to read data from my triaxial sensor. If not, what are my cheapest options?
Thats why I posted the cheap DIY solution for analog voltage inputs already available
Just look at the NI product page for IEPE solutions ...
PCB / modal-shop also offer USB-ICP devices .... but I have no clue of their software or LabVIEW driver ....
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

Similar Messages

Need the fastest update from analog Measurement (DAQ) for controlling sensors that give direct feedback to motion control. Seems board limited? Fastest is about 1.5 milliseconds, can I go faster?

I have designed a sensor system for my linear motor stages that sends relative location back via an analog signal. My positioning speed is dependent on how fast I can read my sensor. Currently, my best implementation updates the software every 1.5 milliseconds. I would like to increase this by at least an order of magnitude. My DAQ is a 1600 series with 200K sample rate, so that is not my limit, my limit is to get it into my software. Any ideas?

Hello;
To acquire data on a point by point basis will limit the sampling rate to how fast the OS can handle your process.
To speed up that rate, you will need to use buffering. That technique allows one to acquire data as fast as the hardware limit is, and store those points in a buffer.
You didn't tell what programming language you are using, but regardless the language, there are good examples showing how to program a buffered acquisition with your board (C:\Program Files\National Instruments\NI-DAQ\examples\ or in Labview Search Examples->I/O Interfaces->Data Acquisition->Analog Input->Continuous Analog Input).
Hope this helps.
Filipe A.
Applications Engineer
National Instruments

How can I configure NI PCI 6221 and DAQ SCB-68 for pressure sensors?

Hello
everybody,
I am using the measuring board (NI PCI 6221) and DAQ
SCB-68 for the data acquisition.
With the DAQ-Assistant I created AI for the voltage of
pressure sensors. In a big indicator panel from this DAQ-Assistant I see the
voltage for both sensors in the correct size. But if I set sensors in the
blockdiagramm to control the signals for sensor one I get a wrong voltage size
and for sensor 2 nothing.
How can I configure this data acquisition equipment to
get the correct signals?
Thanks a lot for your help.

I do not know the type of sensor you are using. But pressure transducers may have a very low output voltage(in the mVolt range). They also need an excitation voltage. Here is an introduction. http://focus.ti.com.cn/cn/lit/an/sloa034/sloa034.pdfThen working with pressure sensors I always use 3 stages in the circuit.
1 Instrumentation Amplifier as a preamp
2 filterstage
3 Final amp and output buffer
(you may combine stage 2 and 3)
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

DAQ for rotational speed and flow rate measurements

Hello Everyone,
I'm in a new project and want measure the rotational speed of a diesel engine and the diesel flowrate . I want use NI products, but couldn't decide which DAQ card is the most suitable for me.
I want measure the instantaneous speed from a speed sensor which sends a pulses for each revolution. The speed I want measure is less than 3000rpm. The flowrate sensor will give me pulses as well. Also, I need it to have some AIO channels to measure the voltage and current signals. I would be very apprciative if you can provide me with some suggestions about the most suitable DAQ for me.
Thanks
Mike

Hi Mike,
This is pretty easily done in LabVIEW with a
buffered period measurement. My recommendation would be to start with
one of our example programs. A good example to use is called Meas Dig
Periods-Buffered-Continuous-High Freq 2 Ctr.vi. This example can be
found by going to Help » Find Examples in LabVIEW and navigating to
Hardware Input and Output » DAQmx » Counter Measurements » Period or
Pulse Width. There are a few changes that need to be made to change
this example to a low frequency period measurement using 1 counter.
1. Adjust the blue enum going into the DAQmx Create Channel.vi to "Low Frequency with 1 Counter".
2. Delete the "Measurement Time" control on the front panel and delete the broken wire on the block diagram after doing so.
3.
Adjust the Samples to Read control to something like 10-100. You can
also adjust this to -1 if you want to just read all available samples.
It
is important to note that these samples will just be the period of the
gate signal and won't contain timestamp information about when they
were taken. However, you can use the order at which you receive the
data to tell you information about when measurements were taken.
Another thing you can do is take a software timestamp prior to starting
the acquisition. This would give you a relative means to determine
when measurements were taken or what the speed was at a specific time.
I hope this helps,
Paul C.

Need help to choose a DAQ for simultaneous sampling

We need to choose a DAQ for simultaneous sampling. The restrictions are:
a) 2 channels
b) The signals on both channels are not continuous. A valid input on the channels is signaled by a falling edge in a third line that can be used as a trigger.
c) The rate of these signals can be up to 50000 per second but they do not arrive in a periodic way.
d) The timing:
The trigger is a pulse of 600 ns
The signals on the channels are stable 200ns before the leading edge of the trigger pulse and remain stable for 900ns.
We have seen the PCI-6143 but we are not sure if it is the best choice.
We have some questions:
1) Does the 6143 fulfill the timing requirements ?
2) Is it posible and easy to set the board to take one sample after the trigger ?
3) Is there a better choice than the 6143 to solve the problem ?
4) Can we solve this problem programming in VB or VC++ and using the software that comes with the board or do we need to buy extra libraries ?

1) Does the 6143 fulfill the timing requirements ?
Yes, the 6143 should fulfill these requirements. It has a 250 KS/s sampling rate per channel which should give you 5x oversampling at the 50 kHz maximum bandwidth you indicated. The minimum delay from the recognition of the trigger to the first sample on this board is 100 ns which falls within the 900 ns window.
2) Is it posible and easy to set the board to take one sample after the trigger ?
It's not clear to me whether you want to take a single sample after a trigger and stop or use the trigger as an external sample clock to acquire several samples at the rate of the trigger. In either case, it's possible and relatively easy to do so. The only quirk is that the minimum number of samples to acquire for a hardware timed acquisition is two samples. This means if you really only want one point after the trigger, you'll have to setup the hardware to acquire two samples and then throw the second one away in software.
3) Is there a better choice than the 6143 to solve the problem ?
This seems like a pretty solid choice for the application you described. However, you didn't mention what the amplitude of your input signals are. The 6143 has a fixed +/- 5 volt range. If this isn't sufficient, you'll have to provide signal conditioning or choose a board with a wider input range. Also, I'm assuming your trigger signal is a TTL signal. If it's an analog signal, you'll want to choose a board with an analog trigger circuit (the 6143 doesn't have an analog trigger). The PCI-6111 is a 2 channel board with a +/- 42 volt input range, an analog trigger, a 5 MS/s sampling rate, and will also meet all of your requirements. The only down side of the 6111 is that it is more expensive and is a 12 bit converter instead of 16 bit. The PCI-6120 has even more functionality than the 6111 and has a 16 bit converter at 800 KS/s. PXI has some more simultaneous offerings, but I'm assuming you want to stick with PCI. You can also check out some of our modular instrument offerings such as the PCI-5102. I'm not as familiar with the modular instruments, so you'll have to check out the specs for yourself. Whether there is a better choice or not is pretty subjective. That will depend on how much you're willing to spend for the features and specs you really care about. From the information you provided, the 6143 will be the lowest cost solution that meets the requirements you specified.
4) Can we solve this problem programming in VB or VC++ and using the software that comes with the board or do we need to buy extra libraries ?
The DAQmx driver provides interfaces to both of these programming environments at no extra cost.

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TS2634 I bought a composite AV cable with 30 pin connector at a proper apple store for my ipad 2 which no longer works now i have updated to ios7 - please advise how to make this work ?

I bought a composite AV cable with 30 pin connector at a proper apple store for my ipad 2 which no longer works now i have updated to ios7 - please advise how to make this work ?

I have the same problem.
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https://discussions.apple.com/message/23081658#23081658
https://discussions.apple.com/message/23281391#23281391
I have not yet seen any official response to the question: "Is the Apple AV Composite cable fully supported with 30pin connector devices upgraded with iOS7 - specifically ? - eg. iPad 2, iPhone 4, iPhone 4s"
If it is not currently supported is that then due to a bug / oversight and in that case is it something that will be fixed in the near future?
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What Is The Proper J2EE Architect For This National Defense Project?

A brief description of a national defense project I am looking into is that the system being developed is supposed to verify the "smartcard" of the card holder and his/her fingerprints against the Defense Department database. The system also reads in information about people (facial features, height, weight, etc.) and stores the information in the database, and then issues new "smartcard".
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Question 1: Is the web tier essential for this defense project?
Question 2: What is the proper J2EE architect for this project?
Question 3: How to deal with the data problem? Especially it looks that entity beans are not applicable.
Question 4: How does the system handle very heavy load? It is possible that tens of thousands of people will use the system at the same time.

A brief description of a national defense project I am
looking into is that the system being developed is
supposed to verify the "smartcard" of the card holder
and his/her fingerprints against the Defense
Department database. The system also reads in
information about people (facial features, height,
weight, etc.) and stores the information in the
database, and then issues new "smartcard".
1. People involved in the project already decided to
use swing for the client tier.
2. The problem is the Defense Department database. It
is a flat file database and this database cannot be
touched. It is a black box for Java developers. The
Defense Department may provide a jar as an outer layer
of this database.
Question 1: Is the web tier essential for this defense
project?
Question 2: What is the proper J2EE architect for this
project?
Question 3: How to deal with the data problem?
Especially it looks that entity beans are not
applicable.
Question 4: How does the system handle very heavy
load? It is possible that tens of thousands of people
will use the system at the same time.
Hi,
You can get it done here :http://www.thesoftwareobjects.com

Proper server sizing for SPARC/Solaris to Intel/R migrations

Is there any collateral available concerning proper server sizing for customers migrating from SPARC/Solaris to Intel/RHEL? I was just asked by our account team that is working with a very large custormer in the pharma space.
My initial knee jerk was to refer them to the OEM but thought I'd look around in these forums first.
My searches have not returned any good results yet.

Hi Mike
the public SAP SD-Benchmark homepage ([http://www.sap.com/benchmark/|http://www.sap.com/benchmark/] -> SD two-tier results) gives interesting but very indirect sizing hints. There are several SAP SD-Benchmarks on SPARC/Solaris. I picked some of them:
[2008075|http://download.sap.com/download.epd?context=B1FEF26EB0CC3466320983FEDBEB2A47615DC8F24866B0B6870E95AA3589B515566F7A57D98961BB]: 24650 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise Server M9000 (32CPUs)
[2008062|http://download.sap.com/download.epd?context=40E2D9D5E00EEF7C974D9FC4D21DA80E794CB437BC196262799B27A2BB01B9D6]: 825 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise Server M3000 (1CPU)
[2008058|http://download.sap.com/download.epd?context=40E2D9D5E00EEF7CB82813BD3F95797BAEB80527B36EC026E03386D659E4DE48]: 7520 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise T5440 (4CPUs)
You'll probably have the hardware setup of your customer together with the system utilization. Check it with the Solaris/SPARC benchmarks on the public page and check for Intel Benchmarks as well. Make sure, that the SAP release is the same (with 2009 a new SAP release is mandatory for benchmarks -> numbers are not comparable to 100%).
Thanks,
Hannes

FB_4.5:"Source could not be found for flash.sensors.geolocation.." . airglobal.swc

Hi!.
I´ve FB 4.5 for PHP and I´ve add SDK 4.5.1 as said the next link :
http://kb2.adobe.com/cps/906/cpsid_90671.html
On my mobile project I use Geolocation:
When I try to run the mobile project , don’t work.
I´ve note that from FB in Package Explore, select my and I can to see the airglobal.swc library , under: My proyect -> Flex 4.5.1 -> airglobal.swc. This library it look that are linked and I can to see your packets such as: (default package); adobe utils ; avmplus and flash , but when I click on one of them, i.e : airglobal.swc->flash->sensors
and I try to open geolocator.abc , appear a popup ( Code Navigator error) that said:
"Source could not be found for flash.sensors.geolocation in D:\Archivos de programa\Adobe\Adobe Flash Builder 4.5\sdks\4.5.1\frameworks\libs\air\airglobal.swc"
If I go to this path in my HD, it exist and I can see the airglobal.swc and Geolocation.abc files, but it look that FB don’t see L . It could be the problem?.
How I can to resolve?. Any idea?.
Thank you!

Hi, I have a simmilar problem but is for another swc:
Source could not be found for mx.core:IUIComponent in C:\.....sdks\4.0.0\frameworks\libs\flash-integration.swc.
Is that not open source too ? Are all classes not accessible like this not open source ?
Also, I've read about mx_internal varialbes, and some people suggest going through the source code to find them, but when that's not possible what should one do to identify them, debug maybe ?

PRVF-4354 : Proper hard limit for resource "maximum user processes"

Dear All,
I am trying to install oracle 11g release 2 on solaris 10 operating system with x86 64 bit architecture for testing purpose.... I have completed all prerequisites for the installation but i am facing the following error..
if anybody can guide me how to resolve this issue..
Hard Limit: maximum user processes -
This is a prerequisite condition to test
whether the hard limit
for "maximum user processes" is set to at least 16384.
Expected Value : 16384
Actual Value : 16341
List of errors:
PRVF-4354 : Proper hard limit for resource "maximum user processes" not found on node "db1"
[Expected = "16384" ; Found = "16341"] -
Cause: Hard limit for the resource does not meet the requirement on the specified node. -
Action: Modify the resource limits to meet the requirement.

Hi all,
in my open source project I am doing the Solaris kernel modification with the following commands:
# RAM_MB=`prtconf |grep Memory|awk '{print $3 }'`
# echo $RAM_MB
3072
# SHMMAX=`expr $RAM_MB \* 1024 \* 1024 \* 70 / 100`
# echo $SHMMAX
2254857830
# projadd -U oracle user.oracle
# projmod -s -K "project.max-sem-ids=(priv,100,deny)" user.oracle
# projmod -s -K "process.max-sem-nsems=(priv,256,deny)" user.oracle
# projmod -s -K "project.max-shm-memory=(priv,$SHMMAX,deny)" user.oracle
# projmod -s -K "project.max-shm-ids=(priv,100,deny)" user.oracle
# projmod -s -K "process.max-file-descriptor=(priv,65536,deny)" user.oracle
# echo "set max_nprocs = 30000" >> /etc/system
# echo "set maxuprc = 16384"     >> /etc/system
# init 6furthermore you can check the current max allowed user processes with a command like:
# kstat |grep v_maxup
        v_maxup                         16384
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David
OCP 9i
http://www.oratoolkit.ch/otn.php

Management Center for IDS Sensors - version error

Hi
Im experiencing problems installing an IDS on CiscoWorks2000 Management Center for IDS Sensors. When I add a sensor I get the following error Error importing configuration files from the sensor - Could not find version in string "Unknown version with discover settings ticked. The sensor is an IDS 4210 version 3.0(5)S17. I have tried to install manually but keep getting sensor not connected in Security monitor.
Thomas

You will usually get this error message when there's a problem with, SSH Fingerprint.
Check the following URL for work around.
http://www.cisco.com/en/US/products/sw/cscowork/ps3990/products_user_guide_chapter09186a0080104f38.html#xtocid6

Proper Runtime Environment for Servlets utilizing SQLJ

I've developed some servlets that utilize SQLJ. They run fine
on the Development system. I want to install the servlets
on another webserver for testing. Is it necessary to install the
entire JDeveloper 2.0 package on the test webserver, just to
provide the proper environment for running the servlets?
I tried to run the servlets on the test webserver by copying
over the java classes found in the JDeveloper 2.0 "jdbc" and
"sqlj" subdirectories to the webserver's "servlet" subdirectory,
and expanding the "zip" files in the "servlet" subdirectory.
I also copied over the contents of JDeveloper's "bin", "java\bin"
and "jdbc\bin" subdirectories, and added the subdirectories
pathnames to the PATH environment variable, but the servlets
still do not run correctly, nor do they raise any java exceptions
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java webserver) does not, however, "crash" or stop running
when the servlet terminates abnormally.
Again, my question is: does JDeveloper 2.0 have to be installed
in its entirety on a test webserver, just to provide a
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Java Web Server 1.1.3.
Thanks,
--- Bill Angel
CSC/ITS
Chantilly, VA.
null

Raghu:
Thanks for the info (below). Using the current production copy
of JDeveloper, I've successfully run servlets containing SQLJ.
I am attempting to put together a deployment package for a
database servlet that utilizes SQLJ. When the java webserver
attempts to initialise the servlet and connect to the database,
an exception is thrown.
The SQLJ Statement causing the exception is:
conn = DriverManager.getConnection(connect_string,"its1","its1");
The exception is:
java.lang.UnsatisfiedLinkError: make_c_state
at oracle.jdbc.oci7.OCIDBAccess.logon(OCIDBAccess. java:142)
at
oracle.jdbc.driver.OracleConnection.(init)(OracleConnection.java:
93)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:146)
at java.sql.DriverManager.getConnection(Compiled Code)
at java.sql.DriverManager.getConnection(DriverManager.java:134)
I assume that "make_c_state" is a link to a "dll" package. Could
you (or someone else) tell me what package I need to include in
the distribution in order to satisfy this linkage requirement?
I am attempting to put together a distribution package that
does not require installing the entire JDeveloper 2.0 suite on
the target marchine running the webserver ,which I believe it is
necessary to do when following the instructions for deploying
database servlets via the instructions contained in the
JDeveloper on-line help information.
I have a second, related question. Our facility will be
installing a new "production" webserver that will be running
UNIX, not Windows/NT. Will it be possible to deploy the java
servlets (which utilize SQLJ) on this platform? To my knowledge,
JDeveloper 2.0 is currently available only for the Windows/NT
platform.
Thanks,
--- Bill Angel
JDeveloper Team (guest) wrote:
: Hi Bill,
: The build 184 was beta release and is outdated. Download the
: production copy of JDeveloper 2.0 (buid 343) and you would be
: able to see all the help I was mentioning earlier.
: thanks and best regards
: raghu
null

User Interface for Multiple Sensors

Hi all,
I want to create an application where in i should be able to acquire data for Accelerometer, pressure, strain, LVDT and Temperature sensors. I want to create a Font Panel as shown in the attachment, i should configure any of the sensors by selecting the check box. Please find the attachment.
I created the prototype design using NI Signal Express, i am not able to customize the Step Set-up window as per my requirements(Shown in the attachment).
Any help regarding how to go about it, whether in LabVIEW or in Signal Express. I would be really glad if you any ideas.
Regards,
KM
Attachments:
LabVIEW Signal Express.vi ‏367 KB
User Interface for Multiple Sensors.png ‏115 KB
LabVIEW GUI.seproj ‏1156 KB

You can certainly do what you want in LV, but you all have to create the UI manually. Beyond that, this configuration dialog is just another LabVIEW program.
What exactly is the problem you are having? I can't open your code because NI still hasn't released the beta version of LabVIEW 2015 for Android.
Mike..
PS: Yes, the comment about LabVIEW 2015 is a joke! Unless of course there really is an Android version coming, in which case I just amazed myself...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Kinect for windows sensor does not start when using remote WMI

Scenario:
I have written a software (lets call it kinectRecorder.exe) that uses "kinect for windows sensor" to record images. The machine that connects to the kinect sensor has windows 8.1 and kinect v2 installed. The software is able to successfully records
images from kinect sensor when running locally. (meaning if I hit f5 from vs2013, frames are recorded to local disk)
Due to resource constraint and other requirement, I have to remotely kickoff kinectRecorder.exe on the windows 8.1 machine from a windows 7 machine. on the windows 7 machine, I remotely kick off the kinectRecorder.exe using windows WMI infrastructure.
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remotely.
Problem:
The result is that kinectRecorder.exe starts ok, but after the kinectsensor.open call, isavailable property changed to false, meaning sensor not detected.
Question:
What's stopping kinect sensor to be detected/opened (i'm not sure what the correct jargon is here)?
I have been search the web, In msdn documentation (known issues), I cannot find the problem being mentioned. I wonder if I'm the only person who has encountered this issue before.
Any pointer is hugely appreciated.

Kinect is not supported within the context of a service because of the underlying need for a user session, see
https://social.msdn.microsoft.com/Forums/en-US/72cecf8b-ac64-47e2-b54b-ddbd1dc237c9/calling-kinect-sdk-apis-from-a-windows-service-is-not-possiblesupported?forum=kinectv2sdk
Can determine that the system has at least one logged in user and can you launch the application within that users session? KinectMontior/KinectService must be running for the runtime to get any data from the sensor. If you use Remote
Desktop to log into that user session, you can confirm this works by running any of the samples and they should work without issue(remember to ensure that your audio remoting is left on the server, see troubleshooting guide
https://social.msdn.microsoft.com/Forums/en-US/20dbadae-dcee-406a-b66f-a182d76cea3b/troubleshooting-and-common-issues-guide?forum=kinectv2sdk).
Carmine Sirignano - MSFT

Proper Ni daq for ICP sensors

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