Vehicle Control Switching Across Communication-Interrupted Road Sections
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Solution Overview
Problem
In environments where vehicle communication is challenging, such as autonomous driving, vehicles struggle to acquire sufficient information from preceding vehicles, affecting their control execution.
Innovation Solution
A vehicle communication system that sets communication established, interrupted, and absence sections on a map based on vehicle positions, allowing the vehicle control device to switch between system-driven and driver-driven controls accordingly, ensuring appropriate vehicle control based on the communication environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle control device performs system driven control using road condition information acquired via communication, then the vehicle control can be executed autonomously and efficiently, but the control cannot be performed reliably in environments where communication is difficult or interrupted
Solution Approach 1:
The vehicle control device dynamically switches between system driven control and driver driven control based on communication status. When communication is established, the system performs autonomous vehicle control using road condition information. When communication is interrupted, the system switches to driver driven control, allowing the control mode to adapt to changing communication conditions and maintaining reliability across different environments.
2Adaptability or versatility
If the vehicle control device switches between system driven control and driver driven control based on communication status, then the control appropriateness is improved, but frequent switching may occur causing instability
Solution Approach 1:
The vehicle control device predicts whether communication will be restored in the future before making switching decisions. When communication is interrupted, the system checks whether restoration is predicted. Only if restoration is not predicted does the system switch to driver driven control. This preliminary prediction action prevents unnecessary switching when communication is temporarily interrupted but expected to restore, thereby reducing frequent switching and improving control mode stability.
3Loss of information
If the vehicle control device acquires road condition information from preceding vehicles via communication, then the information availability for autonomous control is improved, but the information acquisition fails in communication-interrupted sections
Solution Approach 1:
The system uses communication status as an intermediary indicator to determine the appropriate control mode. When communication status indicates established connection, the system acquires road condition information from preceding vehicles and performs system driven control. When communication status indicates interruption, the system switches to driver driven control. This intermediary mechanism ensures that information acquisition reliability is maintained by adapting the control strategy to the actual communication conditions.
Data Source
AI summary
A vehicle communication system includes: a communication server and a vehicle control device. The vehicle control device includes at least one electronic control unit configured to: recognize a position of the host vehicle; acquire section information on the communication established section and the communication interrupted section; determine in which section, either the communication established section or the communication interrupted section, the host vehicle is traveling or is to travel; perform system driven control of the host vehicle based on the road condition information when the host vehicle travels in the communication established section; and perform driver driven control of the host vehicle when the host vehicle travels in the communication interrupted section.