Data acquisition (DAQ) refers to the process in which sensors and other devices automatically collect non-electric or electric signals in the analog and digital units under test and send them to the upper computer for signal analysis, processing and display, which is the basis of the test and measurement system. Data acquisition system is a flexible and user-defined measurement system which combines computer-based measurement software and hardware products. The task of the data acquisition system is that the sensor acquires useful information from the object under test, converts its output signal into digital signal that can be recognized by the computer, and then sends it to the computer for corresponding processing to obtain the required data. At the same time, the calculated data will be displayed, stored or printed in order to realize the monitoring of some physical quantities, some of which will be used by the computer control system in the production process to control some physical quantities. With the rapid development of computer technology, important changes have taken place in data acquisition. The number of bus compatible data acquisition plug-ins is increasing, and the number of data acquisition systems compatible with personal computers is also increasing. Data acquisition has entered a new world.

Data acquisition system is a system based on computer or other special test platform, and data acquisition module is the most important part of data acquisition system. In order to meet the industrial measurement needs of different users, AD function module, DA function module, DIO function module, multi-function module, switch function module and counting function module developed and produced by CHR have good compatibility and suitability. Data acquisition module for various system configurations. In addition to the above products, we can also provide customized digital products to meet the different needs of users.