Data Acquisition And Processing Based On The Embedded Processor In Inertial Navigation System

Inertial Navigation Systems have been developed for a wide range of vehicles. Typically Inertial Navigation Systems are very expensive systems. The development of MEMS technology and micro-inertial technology provided a guarantee for the low-cost micro-inertial navigation system development.Firstly I presented the basic concepts of navigation systems,I Analysis of a variety of navigation methods. I gave the coordinates of the general description and INS basic structure as well as the basic algorithm. Secondly analyzed the basic knowledge of the FPGA and embedded processor NIOS II development process. In the data collection part of the design,I analyzed the basic principles of accelerometer, gyroscopic,and then give a specific application circuit. After the description of the magnetic field we design the electronic circuitry. In order to correction the INS high signal,I describe the micro-pressure and give the corresponding circuit design. Also gives the temperature detection circuit. In the A / D conversion part i design a 16-channel data acquisition circuit.In the data processing platform design,first I analyzed the internal structure of the FPGA and describe the function features. After analysis the power requirements,I given the system memory module and power modules circuit design. In the circuit of the Configuration design,the basic tenets of the chip and the specific structure of the circuit are given out.Finally,the system's testing methods and circuit verification are given out,the system of NIOS II processor design and the basic structure of peripheral modules are described. SPI bus is given VHDL description. The data processing platform pass the C standard procedures for verification and UC/OS2 operating system certification. The system can meet the various needs of different applications.