【作者】 刘亚飞； 尚利宏； 金惠华；

【Author】 Liu Ya-fei Shang Li-hong Jin Hui-hua 601 Lab,Department of Computer Science and Engineering,BUAA,Beijing 100083,China

【机构】 北京航空航天大学计算机学院601教研室；

【摘要】 CAN总线的强实时性和高可靠性使得它在航空机电管理系统通讯领域很有竞争力,国内外对单余度CAN总线的应用和测试也已经很普遍了。随着人类对航空安全的要求越来越高,双余度CAN总线的研究和实现成为了我们研究的新课题。本文介绍了容错双余度CAN总线测试平台的研究和设计。测试环境由若干节点机组成。节点机由PC机和本实验时自主开发的CAN板卡组成(其中PC机和CAN板卡通过PCI插槽进行通讯,两者之间的通讯数据则存放在CAN板卡的双口RAM里)。节点机之间的通讯通过CAN板卡之间的CAN通道实现(CAN通道由导线相连)。基于上述测试环境开发测试工具,包括Matlab模拟工具,报文分析工具,故障注入工具等。该测试平台在一定程度上弥补了国内该领域的空白。更多还原

【Abstract】 The strong real-time and high reliability of CAN bus make it popular in the communication of the electrical and mechanical management system in the aviation.Whether at home or abroad,it is very common to do applications and tests on the single-degree CAN bus.As aviation safety requirements increasing,it appears necessary to do applications and tests on the dual-degree CAN bus This article introduces the research and design of fault-tolerant dual-degree CAN test Platform.The test environment is made up of several nodes.Each node is made up of PC and CAN card which is developped by our own lab.The PC and CAN card communicate with PCI slot,with the message saved in the dual RAM of the CAN card.Communications of nodes are achieved via CAN channels between CAN cards.Based on the above test environment,some test tools are developped,including Matlab simulation tool,message analysis tool,fault injection tool,and etc.The realization of the test platform fills up the domestic gaps in the field to a certain extent.更多还原