Data Acquisition Toolbox

Making Measurements with DAQ Hardware

Data Acquisition Toolbox lets you make a variety of measurements directly from MATLAB without the need to convert the data. Most data acquisition hardware provides the general capability to convert analog voltage data to a digital signal that a computer can process. Some data acquisition hardware has additional capabilities that allow for collecting and processing data directly from thermocouples, RTD devices, IEPE accelerometers and microphones, current-based sensors, or bridge-based sensors. To facilitate making measurements directly from MATLAB, Data Acquisition Toolbox supports the following measurement types:

Voltage — Data from general purpose A/D cards and sound card recording devices

Current — Data from current-based sensors, such as 4-20 mA sensors commonly used for process control

IEPE accelerometer — Data from IEPE accelerometers that need a constant excitation current source on the same wire on which you measure the acceleration

IEPE microphone — Data from IEPE microphones that need a constant excitation current source on the same wire on which you measure the sound pressure

Thermocouple and RTD — Data measured in degrees Celsius, Fahrenheit, or Kelvin

Bridge-based sensor — Data from resistive sensors, such as strain gauges in a variety of bridge configurations that require an excitation voltage

Next: Accessing Device Subsystems

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MATLAB和Simulink在能源与电力行业的应用

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