Vehicle Control Mode Switching Across Communication Dead Zones
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Solution Overview
Problem
In environments where vehicle communication is challenging, such as during autonomous driving, the host vehicle may not acquire sufficient information, affecting its 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 host vehicle attempts to execute system driven control in communication interrupted sections, then autonomous driving functionality is maintained, but control accuracy and safety deteriorate due to insufficient information acquisition
Solution Approach 1:
The patent dynamically adjusts the control mode between system driven control and driver driven control based on real-time communication environment assessment. The ECU determines whether to switch control modes by evaluating communication status in the current section, enabling the system to adapt its automation level to environmental conditions rather than maintaining a fixed control mode.
Solution Approach 2:
The system changes the control parameter (control mode) from system driven to driver driven based on communication environment parameters. By monitoring communication establishment status and section information, the ECU modifies the control behavior to match the available information quality, ensuring safety when communication is insufficient.
2Adaptability or versatility
If the system frequently switches between system driven control and driver driven control based on communication sections, then control appropriateness is improved, but control stability deteriorates due to frequent switching
Solution Approach 1:
The patent performs preliminary assessment of communication sections before executing control mode switches. The ECU acquires section information about communication established and interrupted sections in advance, allowing the system to anticipate upcoming communication conditions and plan control mode transitions proactively rather than reactively, reducing unnecessary switches.
Solution Approach 2:
The system continuously monitors the host vehicle's position relative to communication sections and uses this feedback to determine whether switching is necessary. By comparing current position with section boundaries and evaluating actual communication status, the ECU provides feedback to the control mode decision, preventing switches when communication conditions are adequate.
3Loss of information
If the host vehicle relies solely on communication for information acquisition, then system driven control can be executed, but information sufficiency deteriorates in challenging communication environments
Solution Approach 1:
The patent segments the travel route into communication established sections and communication interrupted sections based on historical communication data from multiple vehicles. By dividing the road into sections with different communication characteristics, the system can anticipate information availability and adjust control mode accordingly, preventing attempts at system driven control in sections where communication is reliably insufficient.
Data Source
AI summary
A vehicle communication system includes: a communication server and a vehicle control device. The vehicle control device (102) 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.