Do you need some of these?
Rugged data acquisition systems – utilizing off-the-shelf hardware such as the NI CompactRIO
High speed data acquisition systems – acquire multiple channels at >1 MS/s
Stand alone data acquisition systems – headless operation acquiring data for days, weeks, or months
Analog data acquisition systems – acquire all sorts of analog data, including vibration, pressure, temperature, current, load, force, voltage, distance, humidity, and magnetic fields.
Digital data acquisition systems – 100s of MB/s to >1 GB/s
Data acquisition and control systems – sometimes you need to react immediately to the acquired data, such as with a rotational encoder fed to a PID control loop to control an actuator.
Want more proof points? Check out these data acquisition case studies:
|Touch PC interface / GUI|
|Closed loop parameter control|
|Controlled & emergency shutdown|
|NI analog input cSeries module|
|NI analog output cSeries module|
|NI digital input cSeries module|
|NI digital output cSeries module|
|INTERFACES / PROTOCOLS|
The client already had an existing manufacturing test system in place. They wanted Viewpoint to enhance the tester due to an increase in production volume demand. Viewpoint reviewed the existing test system and noted 3 areas for improvement:
- Automation available in the measurement instruments – most of the test equipment was automatable, via some combination of serial, GPIB, or Ethernet interfaces. Furthermore, some equipment, such as an oscilloscope, had the ability to store and recall setup configurations. The test operators already used these configurations to decrease setup time for the next test step. Most test equipment did not have automated setup.
- Operator time spent on each test step – the client had been through a Lean assessment and had already done a good job of timing operations. However, we specifically noted that the operator was manually connecting to the test points and manually transcribing to paper the measurement results from instrument displays.
- Automating the connections – many types of product models were being tested at this test system. Connecting the test equipment to all sorts of products would require either 1) many types of test harnesses and connectors or 2) a redesign of the products to make test connections simpler and quicker.
The enhanced automated test system included automation of instrumentation interfaces, a test executive to run the test sequences, automated test report generation, and automated test data archiving for the electronic UUT.
- Reduced total test time across several products by an average of ~25%.
- Time to create paperwork was reduced by ~2/3 due to automated data collection.
The enhanced test system included the following updates:
- Test sequence automation
- Automated test report generation
- Automated test data archiving
- Automation of instrumentation interfaces
- Configurable automated test steps associated with each type of measurement instrument. The test operators would create a sequence of steps to setup each instrument and record the resulting measurement. The sequence of steps could be saved and recalled for each product to be tested, so the instruments could be used automatically.
- New programmable meter – integrated the new DMM meter with a programmable interface to replace the one that was not automatable.
- Foot switch integration – Since the connections to the test points were manual, a foot switch allowed the operator to take the measurement and advance to the next step.
The StepWise test executive platform managed the multiple test procedures created for the different products. StepWise also handled creation of HTML reports for every part tested.
|Test Data Archiving|
|Calculations (e.g. standard deviation, RMS, Max)|
|GUI for configuration, control, and results.|
|Automated Report Generation|
|NI C Series voltage input module|
|NI USB Multifunction I/O Device|
|INTERFACES / PROTOCOLS|
|LabVIEW RT – for managing the microcontroller functions and overall data collection and safety monitoring|
|Microcontroller application – to provide precision pulsing of the batteries|
|Communicate to the host PC – to both receive pulsing instructions and configurations and to return pulse waveforms for each battery tested.|
|MAIN HARDWARE COMPONENTS|
|PXI chassis & controller|
|PXI analog input modules|
|SCXI multiplexing switches|
|INTERFACES / PROTOCOLS:|
- The wide range of input types, acquisition resolution and rates, and the ability to synchronize across channels allows you the flexibility to ask for almost any data acquisition unit conceivable.
- Your customized user interface is layered on top of the data acquisition to provide you with a clear and meaningful display of your data and processing results.
- Utilization of NI products allows for tight integration of the software and hardware, which simplifies development and debug of your data acquisition system.