High-speed signal acquisition, storage and playback device based on FPGA
A high-speed signal and high-speed technology, applied in the direction of data acquisition and recording, can solve the problems of electromagnetic interference, the number of cable transmission line channels, cost and interference, and not suitable for field operations, so as to reduce the amount of data storage, broad application prospects, storage The effect of large capacity
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[0027] figure 1 It is a structural diagram of a high-speed signal acquisition storage and playback device. It includes signal conditioning circuit 101, high-speed A / D conversion circuit 102, FPGA processing unit 103, SDRAM memory 104, NAND FLASH storage array 105, USB2.0 communication unit 106 and host computer software 107. The signal conditioning circuit 101 is a gain-adjustable circuit, which amplifies external signals of different input amplitude ranges according to different ratios to meet the requirements of AD sampling in the subsequent stage, and the amplification ratio is selected by a jumper. The high-speed A / D conversion circuit 102 completes the conversion of high-speed analog signals to high-speed digital signals. The FPGA processing unit 103 can judge whether the device is in the acquisition mode or the signal playback mode according to the setting of the external jumper. In the acquisition mode, the FPGA processing unit 103 writes the digital signal obtained b...
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