基于嵌入式Linux的整车控制器硬件在环远程测试系统的设计

The design of the vehicle controller hardware in-the-loop remote test system based on embedded Linux

作为电动汽车的控制中心,整车控制器(VCU)的结构和功能复杂,开发过程中涉及大量的软件测试,且开发难度高,开发周期长。因此,本文提出了一种基于嵌入式Linux的整车控制器远程测试系统。通过该系统,测试人员可以远程对整车控制器的状态参数获取功能进行测试。本文详细描述了现场测试终端和云端服务器的软件设计;采用TCP socket技术实现了现场测试终端与云端服务器之间的通信,通过CAN总线实现现场测试终端与硬件在环仿真系统的数据交互;最后,通过具体的试验对该远程测试系统的功能进行验证。试验结果表明,该系统可以实现对整车控制器的车辆状态获取功能进行远程测试,且系统运行可靠,实时性好,有助于提高整车控制器的开发效率。

As the control center of the electric vehicle, the structure and function of the vehicle controller are complex. A large number of software tests are involved in the development process, and its development is difficult, which leads to the long development cycle. In this paper, a remote testing system of vehicle controller based on embedded Linux is presented. Through this system, testers can remotely test the acquisition function of the state parameters of the vehicle controller. The article introduces the hardware design and remote client design of the embedded Linux test terminal, and describes the software design of the field test terminal and cloud server in detail. The communication between the field test terminal and the cloud server is realized by using TCP socket technology. The data interaction between the field test terminal and the hardware in-the-loop simulation system is realized by using the CAN bus. Finally, the function of the remote test system is verified through specific tests. The test results show that the system can realize the remote test of the acquisition function of the vehicle state of the vehicle controller, and the system operates reliably and has good real-time performance, which is helpful to improve the development efficiency of the vehicle controller.