基于CAN总线电阻的最大长度和节点数求解方法  

Method of Solving the Bus Resistance Maximal Length and Number of Nodes Based on CAN

作　　者：饶志强[1] 章光[1] 阮幼林[2] 叶念愈[3] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]武汉理工大学信息工程学院,武汉430070 [3]华中科技大学控制科学与工程系,武汉430074

出　　处：《舰船电子工程》2008年第3期143-144,183,共3页Ship Electronic Engineering

摘　　要：以82C250作为CAN控制器与物理层总线之间的接口,通过CAN控制器向总线差动发送与接收,建立CAN总线网络分布等效电路,推导出最大总线长度和节点数,从而为选择CAN总线来组建船舶监控系统提供理论依据,解决了限制CAN总线速度进一步提高的缺陷,并能迅速发现和排除运行中的故障,增加安全可靠性。By selecting 82C250 as the interface between the CAN bus controller and physical layer,differential transmission and reception through CAN bus controller is provided and network distribution equivalent circuit based on CAN bus is established,then the length and largest of bus is deduced.Thus,it provides a theoretical basis for vessel monitoring system.It can accurately estimate the length and the maximum number of nodes,limiting further speed of deficiencies is resolved on CAN bus.In addition,it rapidly det...

关 键 词：CAN总线 船舶监控系统 总线长度 节点数 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]