双轴加速度计的汽车侧翻预警电路设计

Vehicle Rollover Warning Circuit Based on Dual-axis Accelerometer

介绍了汽车侧翻的数学模型,分析了引起汽车侧翻的关键因素,利用ADXL203设计出测量侧倾角的电路,通过微控制器进行数据处理。设计了基于双轴加速度计的便携式汽车侧翻预警系统,实现动态提示驾驶员当前汽车运行状态的功能。测试结果表明,系统运行速度高、测量准确、能够实时监测汽车运行姿态测量,实现侧翻预警功能。本电路具有结构简单、精度高、体积小等优点,可广泛应用于各类机动车运行状态监测领域。

The mathematic model of vehicle rollover is introduced in the paper, and the factors leading rollover are analyzed. The angle measurement circuit is designed using ADXL203, and the data is processed by the microcontroller. A protable vehicle rollover warning system is designed based on dual-axis accelerometer,which can remind the driver of the vehicle running status dynamically. The experi mental results show that the system＇s running speed is high, the measurement is accuracy, and the rollover warning function is achieved. This circuit has simple structure,high accuracy, the advantages of small volume,it can be widely used in all kinds of motor vehicle running status monitoring field.