V2X ADAS Control for Obstructed Preceding Vehicle Braking
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Solution Overview
Problem
Existing Advanced Driver Assistance Systems (ADAS) struggle to effectively avoid rear-end collisions in high-risk scenes, particularly when the line of sight to preceding vehicles is obstructed, due to limitations in environmental perception and response time.
Innovation Solution
The integration of V2X perspective perception technology with on-board perception systems allows for collaborative perception of driving status information of obstructed preceding vehicles and potentially conflicting vehicles, enabling advanced decision and control algorithms for early alerting, mild deceleration, and emergency braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-board perception systems are used to detect preceding vehicles, then the system can perceive the immediate surrounding environment, but the response time is insufficient when the line of sight is obstructed by preceding vehicles
Solution Approach 1:
The patent introduces V2X communication technology as an intermediary to transmit driving status information from obstructed preceding vehicles directly to the ego vehicle. This mediator bypasses the line-of-sight limitation, allowing the ego vehicle to receive real-time information about TV1's braking status even when TV2 blocks the view, thereby resolving the contradiction between reliable collision avoidance and timely response.
Solution Approach 2:
The system performs preliminary action by receiving and processing V2X information about potential hazards before the ego vehicle's on-board sensors would naturally detect them. By obtaining driving status information in advance through V2X communication, the system can prepare for collision avoidance maneuvers earlier, reducing the effective response time and improving reliability.
2Measurement precision
If V2X perspective perception technology is integrated with on-board perception, then the environmental perception capability is enhanced, but the system complexity increases
Solution Approach 1:
The patent merges V2X perspective perception information with on-board perception data into a unified environmental model. By combining these two information sources, the system achieves comprehensive environmental awareness that overcomes the limitations of each individual system, improving measurement precision while managing complexity through integrated processing.
Solution Approach 2:
The system design enables multi-functionality by using the same V2X communication infrastructure for multiple purposes: receiving driving status information, detecting potential hazards, and supplementing on-board perception. This universal approach enhances environmental perception accuracy without proportionally increasing system complexity, as the V2X module serves multiple functions simultaneously.
Data Source
AI summary
A decision and control method for ADAS in a preceding vehicle obstruction scene based on V2X, ADAS system and intelligent networked vehicle, the decision and control method comprises: based on V2X perspective perception technology, collaboratively perceiving driving status information of an obstructed preceding vehicle, and fusing with driving status information of a potentially conflicting vehicle perceived by on-board perception of ego vehicle; based on the fused information, performing behavior judgment of the potentially conflicting vehicle; making a control decision of the ego vehicle according to judgment result. Through the application of V2X technology, the fusion of on-board perception technology and roadside perception technology is achieved, more accurate, more reliable and all-weather environmental perception information is obtained, and perception obstacles in key dangerous scenes are solved. In particular, in the scene where the line of sight to the preceding vehicle is obstructed, it realizes functions that traditional ADAS (based on on-board perception) cannot achieve or enhances the performance and reliability of traditional ADAS functions.