高速实时系统数据采集与传输

Data Acquisition and Transmission in High Speed Real-time System

数据采集实时型是控制系统的关键。如何更加有效地提高系统数据处理、传输、信号控制等方式的速度,从而达到快速处理的目的是亟待解决的问题。以高速采集捷联惯性导航数据和处理、计算为例,详细介绍了多个DSP芯片协同工作,采用双口RAM数据传输技术,数据读取采用FPGA可编程技术,满足了激光捷联惯性导航系统数据采集、传输、解算等处理的要求,实现了航向、横滚、俯仰、速度和位置坐标等导航数据的处理,输出数据更新频率高达500~1000Hz,从而改善了导航系统载体的姿态跟踪。

Real-time data acquisition is the key to control system.How to effectively improve system data processing,transmission and signal control mode is a major problem to solve.This research set the processing and calculation of high speed acquisition strapdown inertial navigation data an example,gave a detailed introduction of joint work by DSP chips,and adopted dual-port RAM data transmission technology.Data reading adopts the method of FPGA programmable technology,and is capable of data collection,transmission and calculation of laser strapdown inertial navigation system.The research has achieved the navigation data processing for heading,rolling,pitching,speed and position,while the output data update frequencies come up to 500~1000Hz,so as to improve the carrier's attitude tracking accuracy.