A High-Precision Data Acquisition System Designed by Using AD7606 and LabVIEW

A high-precision multi-channel data acquisition system was designed for the data acquisition requirements of portable laboratories and signal detection. The system utilizes STM32F407ZGT6 as the control platform, LabVIEW as the display interface, and AD7606 as the core component. Briefly, the system contains a host computer (upper computer) and a slave device (lower computer). The lower computer consists of data processing module, data acquisition one, serial communication one, and power one. For the host computer the user interface is developed by LabVIEW. The data acquisition employs the 16-bit 8-channel sampling chip AD7606. The serial communication is designed to swap data for the host computer. As a test measuring, a system measuring voltage of ±10V and current of 40mA has an error of less than 0.3%. The result directly demonstrates that the system satisfies the initial design requirements.