基于ZYNQ的高精度震动探测系统设计OACSTPCD

In the detection of shallow underground explosion-induced vibrations,the test environment noise is large,and the signal fre-quency of the explosion-induced seismic waves is relatively high.However,conventional seismic detection instruments have larger back-ground noise and lower sampling rates,making it difficult to meet the needs of explosion-induced vibration detection.Therefore,a vibra-tion detection system is designed based on ZYNQ.Firstly,a high-precision sensor ADXL354B is used to acquire explosion-induced vibra-tion signals.A conditioning circuit is designed to filter out high-frequency noise and improve the signal acquisition accuracy.At the same time,a high-precision and high-sampling rate 24 bit analog-to-digital converter AD7768 is used for data conversion.Then,the logic design is carried out in the PL part of the ZYNQ chip,and the PS part uses the driving separation method to customize a Linux system for data processing and transmission.Finally,a semi-physical simulation platform is built to functionally verify the vibration detection node.The experimental results show that the system is superior to domestic similar seismic exploration instruments in terms of sampling rate and system noise.It can synchronously collect acceleration signals at a maximum of 256 ksps,24 bits,and 8 channels and transmit them in re-al-time to the host computer.This result has strong application value in the field of shallow underground vibration detection.