基于xPCTarget的车辆自动变速箱数据采集系统

Data Acquisition System for Automatic Gear-box of Vehicle Based on xPCTarget

针对车辆自动变速器非实时数据采集系统无法对变速箱换档过程中的数据实现真实重现的问题,提出了一种基于xPCTarget的车辆自动变速箱数据采集系统的设计方案,详细介绍了系统硬件和软件的设计。该系统采用上、下位机的方式进行数据采集,上位机采用可视化的图形界面,操作方便;下位机使用xPCTarget下的实时操作系统,能够以2 ms的采样时间对自动变速箱的电磁阀电流、温度、速度、压力等26路信号进行采集,较好地满足了换档过程的分析要求,保证了采集过程的实时性。

In view of the problem that non-real-time data acquisition system of automatic gear-box of vehicle cannot really reproduce the data during shifting, the paper proposed a design scheme of data acquisition system for automatic gear-box of vehicle based on xPCTarget, and introduced hardware and software of the system in details. The system is built by upper-lower computer to collect data. The upper computer uses visualized graph interface and is operated easily. The lower computer uses a real-time operation system based on xPCTarget, which can collect 26 signals of the automtic gear-box of vehicle including solenoid valve current, temperature, velocity and pressure with 2 ms sampling time, so as to meet analysis requirements well and ensure real-time performance during shifting.