Dual-channel Data Acquisition System Based on PCI Bus

In the large-capacity and high-speed real-time data acquisition,the adoption PCI bus as the data transfer bus is the development direction for high-speed data acquisition.For capturing dual-channel analog audio signal,this paper proposes a design of dual-channel data acquisition system based on PCI bus.It first presents working principle of the system,including hardware components and their functions,then describes the programming of DSP,and the design of the driver,finally gives the conclusion.The system has the features of large-capacity data transmission,high speed,good real-time performance and low cost,etc.