车身舒适系统CAN总线网络测试与仿真分析  

Network Tests and Simulation Analysis of CAN Bus of Vehicle Body Convenience System

作　　者：屈敏[1] 

机构地区：[1]南京工程学院车辆工程系,江苏南京211167

出　　处：《南京工程学院学报（自然科学版）》2010年第2期41-45,共5页Journal of Nanjing Institute of Technology(Natural Science Edition)

基　　金：南京工程学院科研基金项目(KXJ08084)

摘　　要：为了研究车载CAN总线网络系统的网络性能指标,选用通用CAN总线软硬件整合组成低成本车载CAN总线网络测试与仿真分析系统,对大众宝来车身舒适系统CAN总线网络进行测试与仿真分析.测试结果表明：大众宝来车身舒适系统CAN总线的节点平均发送CAN数据帧时间间隔为20 ms,数据长度为2~5位,网络通讯波特率为62.5 kBd,正常工作时网络负载为30%,系统后备能力强、可靠性高;仿真结果表明：车载CAN总线网络系统设计时节点测控数据定义较少的发送CAN数据帧时间间隔与数据长度、系统采用较高的网络通讯波特率,可以提高车载CAN总线网络系统性能.To measure the network performance index of CAN bus on automobiles,a low cost system of network test and simulation analysis of CAN bus network was designed by using common CAN bus software and hardware.And the system was adopted to test,simulate and analyze the CAN bus network of Volkswagen Bora＇s bodywork electronic convenience system.The results indicate that the CAN data frame time interval is 20ms on average,with data length being 2 to 5 bytes,baud rate of network communication 62.5kBd;the network load reaches 30% when working normally;the system has great backup capacity and reliability.At the same time,the simulation results show that during the course of designing network system of CAN bus on automobiles,the performance of CAN bus on automobiles can be improved through using lesser time intervals and length of data frames,and higher baud rate.

关 键 词：车载CAN总线 网络性能分析 测试 仿真分析 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]