摘要
针对弹体侵彻加速度信号采集系统要求高精度、高带宽、高采样率、高集成度、低功耗等特点,设计了一侵彻加速度信号采集系统。设计中以FPGA为主控单元,以INA827芯片作为信号调理的主放大器,通过控制A/D转换器AD7934实现对3轴侵彻加速度信号的同步采集,然后将转换后的数字量存储到Flash中,VB开发的上位机软件回读数据后,由Matlab进行处理、分析。通过实际测试验证,该系统能够满足侵彻加速度信号实时采集存储的要求。
Based on the fact that acceleration signal acquisition system applied to projectile penetration test shouldmeet the need of high precision,high bandwidth,high sampling rate,high integration and low power consumption,de-signed missile-borne acceleration signal acquisition system. In this system,INA827 is used as signal conditioningamplifier. FPGA is used as control unit,regulating synchronization acquisition of three-axis penetration accelerationsignals by AD7934 and storage of the converted digital signal to Flash. The data in Flash can be read by uppercomputer software based on VB program and analyzed and processed by Matlab. Experiments show that this systemmeets the need of real-time acquisition and storage of penetration acceleration signals.
出处
《自动化与仪表》
2015年第6期64-67,共4页
Automation & Instrumentation
基金
国家自然科学基金项目(50905169)
