摘要
随着汽车网络的快速发展对数据速率的要求越来越高,针对传统车载CAN通信系统,由于其信道带宽的限制不能满足快速数据传输速率的要求,为了解决其带宽的限制,提高数据传输速率,提出了采用通频带设计系统,通过使用传输矩阵和端口网络级联的方式,在总线型结构模式下对CAN通信系统通频带进行建模研究,同时对该系统在最差情况下最大总线线路长度和节点数进行分析与研究,最终实验验证了模型的正确性,从而为实际信道响应的测量节省了大量的时间,不仅能实现对CAN通信性能进行评估,而且能实现优化CAN总线网络的设计。
With the rapid development of automobile network, the demand for data rate becoming higher and higher. In view of traditional vehicle-mounted CAN communication system, due to the limitation of its channel bandwidth, the requirement of fast data transmission rate cannot be met. In order to solve the limitation of its bandwidth and increase the data transmission rate, the pass band communication system was presented. By using the cascade of the transmission matrix and port network, the modeling of the CAN communication system pass band was studied under the bus structure mode. At the same time, the maximum bus line length and the number of nodes in the worst case were analyzed and studied. At last, the experiments verify the correctness of the model, which saves a lot of time for measuring the actual channel response. It not only can evaluate the CAN communication performance, but also can realize the optimization of CAN network design.
作者
李瑞金
LI Rui-jin(School of Electrical and Information Engineering, Anhui University of Science ＆ Technology, Huainan 232001, China)
出处
《测控技术》
CSCD
2018年第7期9-13,共5页
Measurement & Control Technology
基金
校青年科学研究基金资助项目(QN201511)
