Design of super multi-channel and high-speed data acquisition system based on FPGA

In order to achieve the requirements of high precision and multi-channel data acquisition of oil and gas pipeline magnetic flux leakage detector with high definition,a super multi-channel and high-speed data acquisition system is built with Altera Cyclone series FPGA EP1C6 as the core control module and AD9223 as the analog-digital converter.The data organization and storage are realized by constructing dual-port RAM and state machine using VHDL in FPGA during the data acquisition process.The system achieves acquiring 660-route analog signals with the maximal frequency of 132 kHz and the precision of 12 bits.The compositions and design process of the data acquisition are introduced,and the results of the experiment are represented.