基于CAN总线的城轨车辆通信网络拓扑优化

Topology optimization of urban rail vehicle communication network based on CAN bus

为了提高城轨车辆通信传输的准确性,降低误码率和干扰,需要进行通信网络拓扑结构设计。提出基于CAN总线的城轨车辆通信网络拓扑优化方法。构建城轨车辆通信传输信道模型,结合自适应匹配滤波检测器,对城轨车辆通信信道进行抗干扰滤波处理,采用CAN总线控制技术,在均衡信道中实现控制信息和数据信息交换,构建城轨车辆通信网络拓扑的CAN总线传输结构模型,实现优化设计和节点优化部署。测试表明,采用该方法进行城轨车辆通信网络拓扑设计的自适应性较强,传输误码率较低,在测试次数210次时,传输精度为0.9210,提高了城轨车辆通信的节点自动化部署能力。

In order to improve the accuracy of urban rail vehicle communication transmission and reduce the bit error rate and interference,it is necessary to design the communication network topology.A topology optimization method of urban rail vehicle communication network based on CAN bus is proposed.The urban rail vehicle communication transmission channel model is constructed.Combined with the adaptive matched filter detector,the urban rail vehicle communication channel is anti-interference filtered.The CAN bus control technology is adopted to realize the exchange of control information and data information in the balanced channel.The CAN bus transmission structure model of urban rail vehicle communication network topology is constructed to realize the optimal design and node optimal deployment.The test results show that the topology design of urban rail vehicle communication network using this method has strong adaptability and low bit error rate.When the test times are 210,the transmission accuracy is 0.9210,which improves the automatic deployment ability of urban rail vehicle communication nodes.