Autonomous Driving Kit Bus Rerouting for Body Control Failover
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Solution Overview
Problem
Existing autonomous driving systems face issues where non-redundant control commands cannot be sent to a vehicle platform if communication between the autonomous driving kit and the vehicle fails, particularly for body controls like headlamps and hazard lamps, leading to potential control failures.
Innovation Solution
The autonomous driving kit includes dual communication modules and buses to enable non-redundant control by rerouting commands through a secondary communication path when primary communication fails, ensuring redundant control is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a non-redundant control system is used for body control to reduce communication load, then communication efficiency is improved, but control reliability deteriorates when communication abnormality occurs
Solution Approach 1:
The system preliminarily establishes a secondary communication path during normal operation, so that when the primary communication path becomes abnormal, the autonomous driving kit can immediately switch to sending non-redundant control commands through the secondary path without delay, thus maintaining control reliability while avoiding the need for continuous redundant communication
Solution Approach 2:
The second vehicle control interface box acts as an intermediary that receives control commands from the autonomous driving kit through the second communication module and forwards them to the non-redundant control system, enabling indirect communication through the third bus when the direct first communication path is abnormal
Data Source
AI summary
ADK includes a computer and a communication module. VP includes a non-redundant control system that performs a non-redundant control function, a first bus, a second bus, a first VCIB that is configured to be communicable with the communication module via the first bus and provides a control instruction to the non-redundant control system in accordance with a non-redundant control command for controlling the non-redundant control system from ADK, a second VCIB that is configured to be communicable with the communication module via the second bus, and a third bus that connects the first VCIB and the second VCIB. When the communication via the first bus is abnormal, the computer controls the communication module to send a non-redundant control command to the first VCIB via the second bus and the third bus.