基于GFSIN的车载式智能加速度传感单元的设计

Sensors Unit Design of GFSIN-Based Vehicle Embedded Intelligent Acceleration

为实现机动车运行安全状态监测,解决车身运动姿态监测问题,引入运用在飞行器导航中的无陀螺捷联惯性导航系统(GFSINS)基本原理,建立了基于三维加速度计正方体四顶点车身姿态监测模型,并研究了车载式智能加速度传感单元的设计与实现。实验结果表明,该智能加速度传感单元车速测量误差为1.98%,响应时间为0.38s,可以满足应用要求。

In order to achieve the safety operation state monitoring and solve the problem of monitoring body motion gesture of vehicle, the principle of Gyroscope-free Strap-down Inertial Navigation System （GFSINS） used in aircraft navigation is introduced in this article. A monitoring model of vehicle body motion gesture, which is based on three-dimensional accelerometer at cube＇s four vertices, is structured. The design and implementation of vehicle embedded intelligent acceleration sensor unit is studied. The experimental results show that the speed measurement error of the intelligent acceleration sensor unit is 1.98% and response time is 0.38S, which meet the application requirements.