Vehicle Merging Control Using Communication Reliability Thresholds
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Solution Overview
Problem
Existing vehicle communication systems face challenges in managing disconnections or deteriorated communication quality during automated merging scenarios, leading to potential lane deviations or collisions due to inadequate intervention controls.
Innovation Solution
A traveling control apparatus that determines communication reliability between vehicles and adjusts control interventions based on relative communication quality, prioritizing controls to vehicles with higher reliability to ensure safe merging operations even in deteriorated communication conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated merging control is performed using wireless communication between vehicles, then merging efficiency and safety are improved, but communication disconnection or deterioration may cause lane deviations or collisions
Solution Approach 1:
The system dynamically changes the intervention threshold parameter based on communication reliability. When communication quality deteriorates, the threshold is adjusted to trigger intervention control earlier, compensating for potential information loss or delays in the communication channel.
Solution Approach 2:
The system continuously monitors communication reliability between vehicles and uses this feedback to dynamically adjust the intervention threshold. This closed-loop feedback mechanism ensures that control parameters adapt to real-time communication conditions, maintaining safety despite varying communication quality.
2Reliability
If intervention threshold is lowered to prevent collisions during communication disconnection, then safety is improved, but false interventions increase normal operation disruptions
Solution Approach 1:
The intervention threshold is made dynamic rather than fixed. It automatically adjusts based on real-time communication reliability assessment, being lowered only when communication deterioration is detected and raised when communication is stable, thus balancing safety and operational continuity.
Solution Approach 2:
The system changes the intervention threshold parameter adaptively based on communication conditions. This parameter adjustment ensures that the threshold is appropriately strict only when necessary (during communication issues) and permissive during normal operation, reducing false interventions.
3Device complexity
If uniform intervention threshold is used for all vehicles in merging section, then control simplicity is maintained, but vehicles with different communication reliability cannot be differentiated
Solution Approach 1:
Instead of applying a uniform intervention threshold to all vehicles, the system implements local quality by setting individualized thresholds based on each vehicle's specific communication reliability. This allows the control system to adapt to local communication conditions of each vehicle while maintaining overall system coordination.
Data Source
AI summary
A traveling control apparatus performs a traveling control allowing for merging on a first vehicle traveling on a first lane or a second vehicle traveling on a second lane by wireless communication in a merging section. The traveling control apparatus includes a communication reliability determination unit and a processor. The communication reliability determination unit determines respective communication reliabilities related to the first and the second vehicles. The processor performs the traveling control on the second vehicle when both the respective communication reliabilities related to the first and the second vehicles are higher than or equal to a predetermined reliability. The processor performs the traveling control on the first vehicle when the communication reliability related to the first vehicle is higher than or equal to the predetermined reliability and the communication reliability related to the second vehicle is lower than the predetermined reliability.