基于XCP协议支持多总线的ECU标定系统的实现

摘要

目前国内开发的标定系统大都基于CCP协议,仅支持CAN总线,系统的总线兼容性和可扩展性不强.利用XCP协议传输层与协议层相互独立的特性,实现了一种基于XCP协议、支持多种通信总线的ECU标定系统.系统架构采用业界广泛认可的ASAM-MCD标准,在主、从节点实现了XCP驱动.基于相同的协议层,分别设计了支持CAN总线和FlexRay总线的传输层,使标定系统同时满足两种总线的应用需求.具体的测量标定实验表明:该系统使用方便,能够良好地满足ECU开发过程中的标定需求.%Most calibration systems developed in our country for now are based on the CAN calibration protocol (CCP),which is specially designed for the CAN bus,and thus has poor compatibility and expansibility for other buses.However,the protocol layer of the universal measurement and calibration protocol(XCP) is independent from any specific physical transport layer.Based on that,a multi-bus supported ECU calibration system is implemented,which is in accordance with the widely accepted industry norms of measurement,calibration and diagnostic system made by association for standardization of automation and measuring system(ASAMMCD).The XCP driver is developed in both master and slave nodes,and XCP transport layers for CAN and FlexRay are designed respectively on the basis of the same protocol layer,so that the system is suitable for both the mature CAN bus and the promising FlexRay bus.The system is tested through measurement and calibration experiments,and the results demonstrate that it satisfies the requirements well.