基于FPGA的光纤陀螺信号采集处理卡设计

摘要

光纤陀螺姿态测量系统中的信号采集和处理是系统的一个重要环节;文章介绍了基于FPGA的光纤陀螺信号采集处理卡的设计过程,采用Verilog HDL实现FPGA内部逻辑电路设计,选用AD7846完成信号的数模转换,通过FPGA编程实现光纤陀螺的标定和误差补偿,设计了RS232/422通用异步串口通信硬件电路并在FPGA上实现了串口通信;实验结果表明:该卡能够准确实时地采集并按预定的设计处理光纤陀螺信号.%The fiber optic gyroscope attitude measurement signal acquisition and processing system is an important part of the system; article describes the design process for FPGA - based fiber optic gyroscope signal acquisition and processing card , using the Verilog HDL language to FPGA internal logic circuit design, selection of the number of the number of the AD 7846 complete signal analog converter, FPGA programming, calibration and error compensation of fiber optic gyroscope, designed RS232/422 universal asynchronous serial communication hardware circuit and aserial communication on FPGA; experimental results show that: the card to accurate real-time acquisition in accordance with pre -designed to deal with the fiber optic gyroscope signal.