Bus Device Station Error Localization via Sender ID Tracking
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Solution Overview
Problem
In vehicle communication systems, diagnosing communication errors is challenging due to the inability to identify the sender of faulty messages, leading to increased repair time and costs, as existing systems lack information about the communication path and sender/recipient details.
Innovation Solution
A method to record and store information about the sender and recipient of messages in an error memory entry, including the communication path, which is automatically created during system operation, reducing the need for manual configuration and minimizing communication errors by using a table that tracks message origins and destinations within the bus subscriber stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sender and recipient information is stored in error memory entries, then diagnostic precision is improved, but device complexity increases
Solution Approach 1:
The system pre-establishes a communication path table during normal operation that maps message identifiers to sender and recipient information. When an error occurs, this pre-stored information is immediately available for diagnostics, eliminating the need for complex real-time tracing while achieving high diagnostic precision
Solution Approach 2:
A communication path table acts as an intermediary data structure that stores the relationship between messages and their senders/recipients. This table serves as a mediator between the communication bus and the error memory, providing the necessary information without requiring direct complex tracking of all communication interactions
2Loss of information
If communication path information is recorded in error memory, then loss of information is reduced, but device complexity increases
Solution Approach 1:
The communication path table is populated in advance during normal system operation, storing the origin and destination of each message type. This preliminary action ensures that complete communication path information is available when errors occur, without requiring complex real-time information gathering
Solution Approach 2:
Instead of storing complete communication traces in error memory, the system creates a simplified copy of the communication path information in a dedicated table. This copy contains only the essential sender and recipient data needed for diagnostics, reducing information loss while avoiding the complexity of storing full communication histories
3Productivity
If sender identification is implemented for all messages, then diagnostic efficiency is improved, but use of energy increases
Solution Approach 1:
Sender and recipient information is determined and stored in the communication path table during normal operation when the system is already active. This preliminary action avoids the need for additional energy-consuming identification processes during error conditions, as the information is readily available from pre-stored data
Data Source
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AI summary
The invention relates to a method for providing information for the localization of errors in a communications network of an apparatus (10) in which the data are transmitted between two or more bus device stations (121, 124) via one or more serial communication buses (102, 104, 106). In a bus device station (121, 124), checking measures are carried out in order to identify a communication error for a message from another bus device station (124, 121), wherein, when a communication error for the message is identified by this bus device station (121, 124), an error report is entered into an error memory (EM) of the bus device station. The method is characterized in that information about at least the alleged transmitter (Tx_ID) and/or the alleged receiver (Rx_ID) of the message concerned by the communication error is included in the error report.