列车CANOpen总线协议一致性测试的研究与应用

Research and Application of Train CanOpen Bus Protocol Conformance Testing

本文对CANOpen总线协议的应用背景和协议内容进行了简要分析,一致性测试是确保不同厂家生产的列车设备之间实现互联互通和互操作的前提。在以往CAN总线的众多物理层测试和链路层测试项点中,提取出适用于实际CAN总线接口的列车设备应用的一致性测试项点,又结合CANOpen总线协议层测试提出了一套应用于CANOpen总线协议设备的一致性测试软件,很大程度上简化了设备的一致性测试流程。阐述了测试系统的软件结构和测试实例,完成了CANOpen协议一致性测试的基本功能。实际运行和测试结果表明:所设计的测试平台达到了预期结果,可为后续应用CANOpen总线协议的轨道车辆项目提供一致性试验的方法参考。

Conformance testing is the premise to ensure interconnection and interoperability between train equipment produced by different manufacturers.This paper briefly analyzes the application background and protocol content of the CANOpen bus protocol.From many physical layer test and link layer test items of the previous CAN bus,conformance test items suitable for the application of the train equipment with actual CAN bus interface are extracted.Combined with the CANOpen bus protocol layer test,a set of conformance test software for CANOpen bus protocol equipment is proposed,which greatly simplifies the conformance test process of the equipment.The software structure and test examples of the test system are described,and the basic functions of CANOpen protocol conformance test are completed.The actual operation and test results show that the designed test platform achieves the expected results,which can provide reference for the method of consistency test for subsequent rail vehicle projects using CANOpen bus protocol.