Method and control unit for transmitting safety-relevant data in a motor vehicle by means of an Ethernet standard

摘要

A method and a control device for transmitting safety-relevant data in a motor vehicle by means of an Ethernet standard from a transmitter (2) via at least one intermediate node (4) to a receiver (3), in which the safety-relevant data from the transmitter (2) in an Ethernet packet, wherein the Ethernet packet has an Ethernet frame (5) with the data content and the data content contains communication information (6) and data, each intermediate node (4) receives an Ethernet packet, at least a part of Evaluates communication information (6) from the data content and the Ethernet packet according to the evaluated communication information (6) on, and the receiver (3) receives the Ethernet packet, the communication information (6) from the data content and evaluates the data from the data content if, on the basis of the evaluated communication information (6), the receiver (3) of the security relevant data is. It is provided that a data type (7) for security-relevant data is transmitted in the communication information (6) of the Ethernet frame (5) with the security-relevant data, each intermediate node (4) in the received Ethernet packet, the communication information (6) the data content of the Ethernet frame (5) checked for the presence of the data type (7) for security-relevant data, each intermediate node (4) an Ethernet frame (5), the data type (7) for security-relevant data in the communication information (6) contains, duplicated at least once and each intermediate node sends out the duplicated Ethernet frame (5 ') in a new Ethernet packet.