【摘要】 为了给汽车主动安全系统提供可靠、稳定的数据,采用ARM7微处理器和MEMS传感器等设计了一种汽车加速度数据采集系统。主要介绍了采集系统的硬件组成与软件设计,并通过实验分别对汽车静态时采集到的加速度数据进行了统计分析,对行驶状态下的加速度信号进行滤波处理。通过分析表明:多组采集数据的统计特性相似,采集系统的测量噪声为高斯白噪声,测量数据可靠。更多还原

【Abstract】 In order to provide reliable and stable data for automotive active safety system,an acceleration data acquisition system for automobile is designed which consists of ARM7 microprocessors and MEMS sensors.Hardware structure and software design of the system are described.In the experiments,acceleration data of static state is collected and analyzed and acceleration data of traveling state is filtered.By analyzing,the groups of data have similar statistical properties,measurement noise of acquisition system is Gaussian white noise and measurement data is reliable.更多还原