Real-time Acquisition System of Multi-channel Signal Based on PCI

摘要

Real time data acquisition system has been paid wild attention to due to exponentially expanding industrial control and measurement. Of many industrial bus, PCI (peripheral component interconnect) bus is a very useful communication protocol available for off-the-shelf PC and high speed acquisition. In the document, an implementation solution of data real-time acquisition based on PCI bus is described. The data acquisition system mainly consists of signal regulation circuit, AD conversion, LVDS transmission, PCI controller. XC3S700 of XILINX FPGA was used as the core chip to bridge and control all parts, which has rich internal resource. Driving program of PCI bus was designed by VC in industrial computer. Test results show that the system can collect multichannel signal concurrently, steadily and in real time, and has some application value.