Design of PXI 32-channel scanning A/D converter module

Since its release in 1998, the PXI industry standard has quickly developed in varieties of general industrial measurements and automation systems. In this paper, a kind of data acquisition architecture for multi-channel data acquisition systems based on PXI platforms is presented in detail. The proposed architecture model keeps a balanced equilibrium among complexity, speed, data storage memory, and performance. The aim of this architecture is to increase the capabilities of standard data acquisition systems by adding more input channels and to develop data acquisition and processing applications using graphical languages like LabWindows/CVI to get a friendly UI.