Stack Overflow
Stack Overflow

Questions tagged [data-acquisition]

Data acquisition deals with accessing, collecting, configuring and controlling external hardware such as sensors, computer ports, various instruments and measurement devices for the purpose of data synchronization, storage or further analysis.

Data acquisition (DAQ) deals with accessing, collecting, configuring and controlling external hardware such as sensors, computer ports, various electronic instruments and measurement devices for the purpose of synchronization, storage or further analysis.

Though there ere are several platforms specializing in DAQ such as Labview, and Matlab's DAQ toolbox, practically any programming language have access to the hardware level from which data can be gathered.

113 questions
1
vote
0 answers

Getting high sampling rates in my Matlab experiment

Just a short description of what I am trying to achieve: I have a horizontally mounted lever with a potentiometer that is used to control a cursor on a computer screen. I use Matlab 2011a with Psychtoolbox and Data Acquisition Toolbox on a Windows…
phrk
  • 11
  • 3
1
vote
0 answers

Error running NI-DAQmx ANSI C example in Windows 7 virtual machine

I am running a Windows 7 guest system with an Ubuntu 14 host, using VirtualBox, and have run into a problem running even the simplest examples provided by National Instruments, using the ANSI C API for NI-DAQmx. The first time the DAQ Device is…
RazvanC
  • 11
  • 2
1
vote
0 answers

Optimum buffer to memory ratio

I am trying to build a DAQ using Sparrow's Kmax. I have a ready template in which the total memory is 16 MB. static final int evSize = 4; // The num of parameters per event of this type static final int BUF_SIZE =…
Thanos
  • 594
  • 2
  • 7
  • 28
1
vote
1 answer

Matlab Data Acquisition with Continuous Output and Dis-continuous Input

I would like to use Matlab's data acquisition toolbox to continuously send data to a device (sort of like an outer loop that is always running) and collect data from a sensor for a pre-determined duration after some time (the data acquire part being…
user2884257
  • 11
  • 3
1
vote
0 answers

Schedule a queue via putdata and execute it discontinuously via multiple triggers

I am using the Matlab data acquisition toolbox to control the output of a National Instruments device (NI USB 6229). So far I am able to create output objects via analogoutput and addchannel, queue my data via putdata, and start the data output via…
H.Muster
  • 9,297
  • 1
  • 35
  • 46
1
vote
2 answers

Java GUI in Matlab2011a and 64bit Win7

Earlier this year I code Java GUI to work in Matlab environment for image acquisition purposes. I was able to call Java_Gui.jar inside the matlab, as well as to use some of the classes from the .jar file. The GUI was tested on WinXP 32bit, and…
Makaroni
  • 880
  • 3
  • 15
  • 34
0
votes
0 answers

Changing the measured magnitude with PyVISA in a Keithley multimeter

I am using the pyVISA python library pyVISA to read resistance and current values with a Keithley 2100 multimeter. However, I am not able to set the quantities to be measured with pyVISA, but have to set it manually on the multimeter. I have…
user21390097
  • 1
0
votes
1 answer

Unable to export time series from MODIS NDVI in GEE as transforming geometry into requested projection not working

I am trying to acquire MODIS NDVI (MOD13Q1 v061) time series using Google Earth Engine for certain locations for which I have the coordinates. My code looks as follows: ////////// Input // Specify dataset var dataset = 'MODIS/061/MOD13Q1'; //…
Toni S
  • 13
  • 2
0
votes
1 answer

Labview adquisition speed

I am using LabVIEW with DAQmx to read data, and I need to read the chart every 100ms. I have the number of samples and the sampling rate, and I am using continuous acquisition mode. To read every 100ms, I need to adjust the number of samples per…
Hrathen23
  • 37
  • 5
0
votes
0 answers

Adam 4050 Data acquisition module

Is there any one who worked on Adam 4050 data acquisition module? Any idea on connecting Adam module with Adam utility software?? If so can help me on how to achieve communication using RS485 communication using python. Sample codes will be helpful.
SivaSakthi
  • 1
  • 2
0
votes
0 answers

Communication issue with Adam Module 4050

I'm trying to communicate with Adam Module 4050 via my PC COM Port. But its not even showing the device in Adam utility software. Green color light in device is continuously on. wiring Adam utility If any one who have worked with Adam Data…
SivaSakthi
  • 1
  • 2
0
votes
1 answer

Need assistance with building a LabVIEW setup for Pressure/Temperature/RPM/Voltage/Amperage

I'm working on assembling a LabVIEW setup that has the ability to measure Pressure, Temperature, RPM, Voltage and Amperage. I believe I have identified the correct modules but am looking for another opinion before giving anyone a lot of…
Smogel
  • 1
  • 1
0
votes
0 answers

How to obtain the permission change information of member in GitHub

Objective: To obtain the permission change information of members in a specific repository in GitHub, for example, the permission of developers 'A' is upgraded from read to write. Question: Through the GitHub document, I found that GitHub-Api…
Endeavor
  • 1
0
votes
1 answer

Detect breakdown voltage in an AC waveform

I need to monitor an AC Voltage waveform and record the RMS value when the breakdown happens. I roughly know how to acquire data from videos I have watched, however, it is difficult for me to produce a solution that reads the Breakdown Voltage…
BDV0806
  • 1
0
votes
1 answer

Build cluster array only produce 1 element

I've been trying to make an array of clusters in LabVIEW, I know I can make it in the front panel but I need to make it from the block diagram because I want to input something into my array of clusters and to make my program function correctly I…
Baits Aldo
  • 1
1 2 3
4
5 6 7 8