车载通信总线带宽资源的控制方法  

Control Methods of Vehicle Communication Network Bandwidth

作　　者：李广大 宋菊 宋明昊 LI Guangda;SONG Ju;SONG Minghao(Innovation and R&D Center of JUNEYAO Auto Co.,Ltd.,Shanghai 201803;LongShine Technology Group Co.,Ltd.,Jinan 250001;Shandong Transport Vocational College,Weifang 261206,China)

机构地区：[1]上海吉祥智驱新能源汽车有限公司创新研发中心,上海201803 [2]朗新科技集团股份有限公司,山东济南250001 [3]山东交通职业学院,山东潍坊261206

出　　处：《汽车电器》2024年第7期32-35,39,共5页Auto Electric Parts

摘　　要：CAN总线在汽车通信网络中应用广泛且占据着重要地位,但随着电气类功能,尤其智驾和智舱域功能的不断丰富,总线上需要交互的信息量越来越大,总线带宽资源也因此越来越紧张,负载率越来越高。过高的总线负载率将影响信号传输的实时性和稳定性,因此,在网络架构设计之初进行网络带宽资源的管控至关重要,这将影响网络架构的平台化设计和后续功能的拓展。本文从信号层面、总线层面和拓扑层面介绍通信总线的负载率管控方案。The CAN bus is widely used plays an important role in vehicle Communication Network.But with the development and diversification of electrical functions,especially in intelligent cockpit and ADAS fields,signals transmitted on bus becomes more and more,which will result in heavier busload.The high busload will affect the real-time and stability performance of signal transmission,so it's very important to control the network bandwidth resources in the beginning of the project,which will have great influence on the design of platform and new functions.This paper introduces the load ratio control scheme of communication bus from signal level,bus level and topology level.

关 键 词：带宽 管控 信号 CAN总线 拓扑 

分 类 号：U463.7[机械工程—车辆工程]