公开(公告)号：US5499336A

公开(公告)日：1996-03-12

申请号：US249075

申请日：1994-05-25

申请人： Karl-Heinrich Preis ,  Harald Buhren ,  Bernd Klumpp

发明人： Karl-Heinrich Preis ,  Harald Buhren ,  Bernd Klumpp

IPC分类号： G06F11/00 ,  G06F11/34 ,  H04L12/26 ,  H04L12/413 ,  H04L29/14

CPC分类号： G06F11/0751 ,  H04L43/0811 ,  H04L43/0823 ,  H04L69/40 ,  G06F11/0757 ,  H04L12/4135 ,  H04L43/045

摘要： A method is proposed for monitoring a computer network having at least two subscribers connected via a databus comprising at least two lines, said subscribers having in each case one receiving component and/or one transmitting component. The method is characterized by the fact that the functioning of the databus and/or the functioning of the subscriber is monitored with the aid of error detection signals (watch-dog signals, CEI) of at least one subscriber, and emergency operation measures (M1; M2), matched to the respective error case, for setting defined emergency modes of operation (single-wire mode, special emergency mode) are taken. After taking the first emergency operation measure (M1), it is tested whether the computer network is functioning free of errors. If this is the case, the first emergency operation measure is maintained and thus also the emergency mode of operation (single-wire emergency mode) adopted. If further errors should arise in the computer network after the first emergency operation measure has been taken, the first emergency operation measure is cancelled and the second emergency operation measure (M2) is taken. If, from now on, no further errors arise, the emergency operation mode, the special emergency mode, set by this measure is maintained. Only if further errors continue to arise are the affected subscribers or the entire computer network switched off (bus-off).

摘要翻译： 提出了一种用于监视具有至少两个通过包括至少两条线路的数据总线连接的用户的计算机网络的方法，所述用户在每种情况下具有一个接收组件和/或一个发射组件。 该方法的特征在于，借助于至少一个用户的错误检测信号（看门狗信号，CEI）和紧急操作措施（M1）来监视数据总线的功能和/或用户的功能 ; M2）匹配相应的错误情况，用于设置定义的紧急操作模式（单线模式，特殊紧急模式）。 在采取第一个紧急操作措施（M1）后，测试计算机网络是否正常运行。 如果是这种情况，则维护第一紧急操作措施，因此也采用紧急操作模式（单线紧急模式）。 如果在采取第一次紧急操作措施之后在计算机网络中出现进一步的错误，则取消第一紧急操作措施并采取第二紧急操作措施（M2）。 如果从现在开始，没有进一步的错误出现，则采取这种措施确定的紧急运行模式，特殊应急模式。 只有继续出现进一步的错误，受影响的用户或整个计算机网络关闭（总线关闭）。