基于MIMU的车速测量方案研究

Study of Speed Measurement Scheme Based on MIMU

分析了车辆装备底盘性能测试对运动参数测量的特点和要求,提出了利用MIMU单独工作进行车速测量的方案,以MIMU(MEMS Inertial measurement unit)为主要单元,以小型蓄电池作为供电源,通过USB-RS422转换接头,从USB口连接到笔记本电脑,从而获得计算的基本数据。给出了车速测量系统的安装调整和速度及位移的计算思路,明确了实现工程化应用还需深入进行的工作。

Characteristics and requirements were analyzed about test requirements of motion parametersduring equipment chassis performance testing..A scheme was proposed for speed measurement work alone using MIMU（MEMS Inertial measurement unit）. The system core with IMU was composed with an IMU as main unit and a small storage battery as power source, connecting to notebook computer from USB port through USB-RS422 x-over, and the basic data could be obtained. Fitting and adjustment of the speed measurement system was given along with the calculation method of speed and displacement. Further work for engineering application was clear.