MIMU数据采集系统设计

Design of MIMU Data Acquisition System

为提高低成本捷联惯性导航的性能，针对微机电陀螺仪和MEMS加速度的电气特性，设计了可同时进行电压／频率（V／F）变换和模拟／数字（A／D）信号转换的数据采集系统。数据采集系统在现场可编程门阵列控制下，有效实现多通道同步、实时数据采样，克服了以往传感器数据采集时差带来的导航计算误差和电路复杂的不足。

A MIMU data acquisition system is designed to improve the performance of a strapdown inertial navigation system. Taking account of the electrical characteristics of Micro Electro-Mechanical System（MEMS） gyroscope and MEMS acceleration measurement, the system can perform voltage-to-frequency （V/F） and analog-to-digital （A/ D） convertion simultaneously. A solution based on FPGA for multi - channel real time synchronal data acquisition is devised. The problems of the navigation computation error from time difference of data acquisition, and the complexity of electric circuit will be solved.