Design and Application of Data Acquisition System in Spiral CT

The design and technique of Data Acquisition System(DAS) in spiral CT is proposed in this paper,based on the real-time service and large amount of data.The DAS has double CPUs.One CPU is used to transfer data from preamplifier to FIFO,using Direct Memory Access(DMA).And the other runs for delivering data to main control station by wireless network.This design has been applied in the real industrial CT.