有源星型光纤CAN网络的数据传输系统的研究设计  

Design of Data Transmission System Based on Active Star Fiber CAN Bus

作　　者：刘飞强[1] 周新志[1] 

机构地区：[1]四川大学电子信息学院,成都610065

出　　处：《计算机测量与控制》2015年第11期3846-3848,共3页Computer Measurement &Control

基　　金：国家"973计划"资助项目(2013CB328903)

摘　　要：在电磁干扰较强的工业现场环境下,为了提高数据传输的可靠性,以光纤作为数据传输介质的应用越来越广泛;目前以光纤作为传输介质的CAN总线的标准并没有形成,对各种CAN网络的拓扑结构和光纤CAN网络的特点进行了分析之后,提出了一种基于光纤的有源星型CAN网络的数据传输系统的设计方案;设计出数据传输系统的结构、硬件和软件,其中硬件主要包括用LPC2292作为CAN控制器,光纤收发模块的设计以及采用FPGA芯片作为有源耦合器的主控芯片,软件主要包括基于LPC2292微控制器实现CAN应用层协议和上位机监控软件的设计;通过4个CAN节点的实验的测试,系统具有良好的可靠性,同时验证了系统设计方案的正确性与可行性。Under the strong electromagnetic interference environment,in order to improve the reliability of data transmission,fiber becomes more and more widely used as data transmission media.At present,the CAN bus standard of using fiber as the transmission medium is not formed,after analysing the topology of various CAN networks and the protocol of fiber CAN,a data transmission system based on active star fiber CAN networks was introduced.The structure,hardware and soft of the data transmission was designed.The system hardware included LPC2292 CAN controller,fiber optic transceiver module and FPGA chip as the main chip of active couple.The system soft included the design of CAN bus application layer protocol based on LPC2292 controller and PC monitoring software.Through the experiment of four CAN nodes,the system has good reliability and the correctness and feasibility of the system design scheme is verified.

关 键 词：数据传输 光纤 有源星型CAN总线 LPC2292控制器 CAN应用层协议 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]