Vehicle Control System Time Synchronization Feedback
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Solution Overview
Problem
Existing vehicle control systems face challenges in accurately performing time synchronization between a master electronic control unit and multiple slave electronic control units, which can lead to anomalies in the synchronization process.
Innovation Solution
A vehicle control system that includes a master controller and multiple slave controllers connected via an in-vehicle network, which acquires accuracy-related information regarding time synchronization and transmits list information based on this data to ensure accurate synchronization and detect any anomalies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time synchronization is performed between master electronic control unit and multiple slave electronic control units, then advanced vehicle control can be realized, but anomalies may occur in time synchronization
Solution Approach 1:
The patent implements a feedback mechanism where the master electronic control unit receives time synchronization status information from slave electronic control units and transmits correction information back to them. This closed-loop feedback system enables continuous monitoring and correction of synchronization anomalies, resolving the contradiction between achieving advanced vehicle control and maintaining synchronization reliability.
Solution Approach 2:
The master electronic control unit acts as an intermediary that coordinates time synchronization among multiple slave electronic control units. It collects synchronization status from all slaves, processes the information, and distributes correction signals, thereby mediating the synchronization process to prevent anomalies while enabling advanced control functions.
2Adaptability or versatility
If multiple slave electronic control units are connected to master electronic control unit via in-vehicle network, then cooperation for advanced control is enabled, but time synchronization anomalies may occur between any slave and master
Solution Approach 1:
Each slave electronic control unit transmits its time synchronization status to the master, creating a feedback loop that allows the master to identify and correct synchronization anomalies. This feedback mechanism maintains measurement precision while enabling versatile cooperation among multiple control units.
Solution Approach 2:
The master electronic control unit performs multiple functions: it acts as a time source, receives synchronization status from all slave units, processes synchronization data, and transmits correction information. This multi-functional approach enables universal coordination across the network, maintaining synchronization accuracy while supporting diverse control unit cooperation.
Data Source
AI summary
A vehicle control system includes a master controller and multiple slave controllers configured to communicate with the master controller via an in-vehicle network. The vehicle control system is configured to acquire accuracy-related information, which is information related to accuracy of time synchronization between the master controller and the slave controllers, from the master controller and the multiple slave controllers, and transmit list information based on the accuracy-related information acquired from the master controller and the multiple slave controllers to the master controller and the multiple slave controllers.