BUS GUARDIAN AS WELL AS METHOD FOR MONITORING COMMUNICATION BETWEEN AND AMONG A NUMBER OF NODES, NODE COMPRISING SUCH BUS GUARDIAN, AND DISTRIBUTED COMMUNICATION SYSTEM COMPRISING SUCH NODES

摘要

In order to provide a bus guardian (30) for monitoring communication between and among a number of nodes (100), in particular between and among a number of electronic control units, the bus guardian (30) being designed for monitoring at least one cyclic time-triggered communication media access schedule for transmitting messages between and among the nodes (100) across at least one communication media (10), in particular across at least one channel (12) and across at least one optional further channel (14), and being assigned to at least one communication controller (40), the communication controller (40) comprising the communication media access schedule, wherein the bus guardian (30) as well as a corresponding method require neither any a priori knowledge of the communication schedule nor any configuration parameter and monitor the communication media access schedule of the communication controller (40) even during start-up of the communication, it is proposed that that the bus guardian (30) is able to learn, in particular within the first cycle, about said communication media access schedule, and that the bus guardian (30) makes use of the learned knowledge with respect to at least one possible schedule violation (SV1, SV2, SV3), in particular with respect to at least one deviation from said communication media access schedule, for example during start-up of the communication.