In this paper,an electromagnetic imaging system based on ZYNQ is designed to achieve electromagnetic imaging using array sensors.This system uses the ZYNQ-7000 developed by Xilinx Company to design a single channel high-speed data ac-quisition system.The 14 bit AD9240 is used as the analog digital conversion chip,and the AD9767 and AD9240 form a loop to de-tect the excitation signal.The highest sampling rate of the system can reach 32MSPS,which can meet the requirements of the imag-ing process for the sampling rate.The peripheral circuit communicates with FPGA through SPI bus,and is jointly developed by Viva-do and SDK software.Phase sensitive detection algorithm is used to separate and extract the amplitude and phase of the collected sig-nal.Through the imaging experiment of metal samples placed within the inspection range of the array sensor,the experimental re-sults show that the system can meet the requirements of accurately collecting signals,and can use the collected signals for electro-magnetic tomography.
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