The Design Of Inertial Navigation Device Data Acquisition Based On Linux System

With the rapid development of inertial navigation technology,requirements for inertial navigation device accuracy based on data acquisition system and throughput of data process ing are getting higher and higher,the excellent performance of data acquisition systems are welcomed by highly inertial navigation technology workers.In order to improve the syste m of high efficiency,real-time,scalability,real-time data acquisition,display in the humancomputer interaction interface,this paper puts forward the design scheme of data acquisitio n system based on ARM.This paper gives a detailed description of key technology of data acquisition system in the Linux system,including signal processing,data transmission,data display,the collectio n of data control and data storage and data analysis.Based on the basic data processing tech nology,it proposes the overall design scheme of the data acquisition system.In the hardwar e design of the system,it designs respectively the front-end data acquisition circuit,power c ircuit,peripheral circuit,the design of the module,focuses on serial transmission module,t o achieve the requirements of real-time data acquisition and transmission,and the realizatio n of hardware.On the basis of high speed PCB design principles,use Candace to draw and fabricate the PCB board of the system;as for the software design of the system,first of all,build a good system software platform,Linux operating system,BootLoader,Qt and three p arty libraries ported,then on this platform collect the inertial navigation device based on the data in the inertial navigation device in the accelerometer gyroscope,transmit the accelero meter,the angular velocity and temperature data to the ARM main control chip,use the mai n control chip in the burning acquisition program for real-time acquisitio of data,display th e data in the QT corresponding interface TexLine,data display module.Finally,the acquire d data are saved to the corresponding file or database,to realize the real-time data storage,a nd then collect data to go through static analysis.In the core component of the subject data acquisition card is based on ARM and then p eripheral expansion.ARM data collector based on Linux system for inertial navigation data real-time acquisition,has high tunability and scalability.