Data acquisition (DAQ) is the process of measuring an electrical or physical phenomenon such as voltage, current, temperature, pressure, vibration or sound with a computer.

CompactDAQ system is world’s most trusted platform for acquiring data offering providing customizable solution and best ease of use experience for engineers to perform electrical and physical measurements either at their benchtop or in a distributed architecture in a single system.  In a CompactDAQ system, a chassis is connected to your PC through USB or Ethernet, and then populated with one or more conditioned I/O modules. These modules provide direct connectivity of various sensors and signals for measuring physical phenomena such as temperature, sound, vibration, strain, rotation speed, measurement and generation of standard voltage and current analog and digital signals, measurement of high voltage and current signals and bus communication CAN and LIN and are also compatible with cRIO design. You can synchronize the CompactDAQ Chassis to create a distributed system.

For simple measurements you can also use simple USB or PCIe or multifunction DAQ devices

more informations