Design Of High-Speed Multi-Channel Ad Interface Circuit Based On Arm And Fpga

In order to meet high-speed acquisition and storage requirements of the multi-channel sensor data, this article basing on ARM embedded processor S3C2440, extending FPGA EP2C8chip as coprocessor, designed and completed a multi-channel high speed data acquisition and storage system which based on ARM+FPGA architecture.System uses AD9283ADC chip for analogue signal collection, selects AD7503analog switch to switch8-channel analogue signal. And uses FPGA chip to control data collection of AD acquisition module, implement the FIFO data cache.The ARM processor receives the multi-channel data by DMA, and stores the result to a CF card,and then processes the data, and uses LCD to display the data. Paper discusses in detail the overall design of the data acquisition system and implementation of software and hardware, and gives measured results of the system. These test results indicate that the system had high reliability.