时间敏感以太网技术应用研究  

Research on Application of Time Sensitive Ethernet Technologies

作　　者：孔祥明 李长龙 梁贵友 周时莹 高长胜 Kong Xiangming;Li Changlong;Liang Guiyou;Zhou Shiying;Gao Changsheng(China FAW Group Corporation Limited,Changchun 130013)

机构地区：[1]中国第一汽车集团有限公司,长春130013

出　　处：《汽车文摘》2024年第7期37-43,共7页Automotive Digest

摘　　要：随着车内网络对实时性和大容量数据传输的双重需求逐步增加,时间敏感以太网(TSN)成为以车载以太网为骨干网的电子电气架构中必不可少的技术。为了验证TSN协议对车载以太网的延时影响,通过对TSN主要协议族的技术特点和应用场景进行分析,使用RTaW软件建模,通过Zonal架构网络对4种不同情况的车载以太网流量进行仿真。结果表明,采用TSN协议的车载以太网在干扰流量占主要链路为80%带宽时,最差端到端时延约增加0.1 us,接近无干扰情况延时。仿真表明TSN对车载以太网传输队列延迟有可靠保证,TSN将在音视频传输、高等级自动驾驶、安全备份等方面发挥更大的作用。With the increasing demand for real-time and large capacity data transmission in the in-vehicle network,Time Sensitive Networking(TSN)has become an essential technology in the electronic and electrical architecture with vehicle ethernet as the backbone network.In order to verify the delay effect of TSN protocol on vehicle ethernet,this paper analyzes the technical characteristics and application scenarios of the main TSN protocol family,uses RTaW software modeling,and simulates the traffic of vehicle ethernet under 4 different conditions through the Zonal architecture network.The results show that when the interference traffic accounts for 80%of the main link bandwidth,the worst end-to-end delay of vehicle ethernet using TSN protocol increases by about 0.1 us,which is close to no-interference case delay.Simulation results show that TSN can guarantee the delay of vehicle ethernet transmission queue reliably.TSN will play a greater role in audio and video transmission,high-level automatic driving,security backup and other aspects.

关 键 词：智能网联汽车 时间敏感以太网 车载以太网 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术]