This data can be displayed, analyzed, modified or stored. The collected data is called waveform in LabVIEW. The ability of LabVIEW to take in data from an external source, process it and send processed data back to control external devices is what distinguishes LabVIEW from other softwares. This is known as configuring the data acquisition process and is done before collecting the data. How many readings to collect or how long to continue reading the signal.Once mismatches between transducers and data acquisition hardware are removed, data can be collected.
Signal conditioning may be required to adjust the signal type and range of the output signal to align with the requirements of the data acquisition system.
I have already posted a article on how to get data serially on labview which is a example of Data Acquisition system. A transducer can be used to convert the low level voltage signal to a high level voltage signal. When this voltage is sent to a wire it is called a voltage signal. The emf generated is a low level voltage. a thermocouple generates an emf due to two dissimilar metal joined at the it’s junction. A sensor is a device that responds to a physical change and outputs an electrical signal and a transducer is a device that converts energy from one form to another. Overview of Data Acquisition system: Data acquisition is a process of automatically obtaining data from one or more sensors or transducers directly into the computer system.