Autonomous Driving V2X Signal Error Detection and Path Reset
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Solution Overview
Problem
Conventional autonomous driving systems using V2X communication struggle to accurately detect traffic light signals, leading to potential accidents due to signal errors when signals are blocked or misinterpreted, and fail to determine alternative paths for bypassing intersections.
Innovation Solution
An autonomous driving system that acquires and compares signal information from multiple traffic lights using V2X communication, determines signal errors by analyzing the signal states of intersecting or facing traffic lights, and resets the driving path to generate an alternative route or emergency path to avoid intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traffic light signal information is transmitted through V2X communication apparatus, then the host vehicle can receive signal information, but the system cannot detect lane information and may accept erroneous signal information without verification leading to accidents
Solution Approach 1:
The autonomous driving system receives signal information from V2X communication apparatus and feeds back verification results by comparing received signal information with pre-stored traffic light control information. This feedback mechanism allows the system to detect discrepancies and reject erroneous signals, thereby maintaining high reliability while completing information reception.
Solution Approach 2:
The system introduces an intermediary verification process between receiving V2X signal information and making driving decisions. By comparing received signals with pre-stored control information from traffic lights, the system acts as an intermediary that filters and validates information, preventing direct acceptance of potentially erroneous V2X data.
2Device complexity
If the autonomous driving system relies solely on camera recognition, then the system structure is simpler, but the traffic light signal detection fails when signals are blocked by vehicles or the host vehicle position
Solution Approach 1:
The system merges multiple detection approaches: camera-based visual recognition and V2X communication-based signal reception. By combining these complementary methods, the system achieves redundant detection capabilities where each method compensates for the other's limitations, particularly when signals are blocked from camera view.
Solution Approach 2:
The autonomous driving system implements multi-functional detection capabilities by integrating both camera recognition and V2X communication reception. This universal approach allows the system to detect traffic light signals through multiple channels (visual and communicative), ensuring reliable detection regardless of blocking conditions.
3Productivity
If the autonomous driving system accepts V2X signal information without verification, then the processing speed is faster, but erroneous signal information can cause major accidents at intersections
Solution Approach 1:
The system performs preliminary verification by comparing received V2X signal information with pre-stored traffic light control information before making driving decisions. This preliminary action of validation ensures that erroneous signals are rejected in advance, preventing accidents while maintaining efficient processing through automated comparison protocols.
4Ease of operation
If the system uses only ground truth signal information from V2X communication, then the information is directly available, but errors in the signal information cannot be detected
Solution Approach 1:
The system implements feedback verification by comparing directly acquired V2X signal information against pre-stored reference data. This feedback loop enables automatic detection of discrepancies, allowing the system to maintain ease of information acquisition while ensuring measurement precision through validation.
Data Source
AI summary
An autonomous driving method of a vehicle using V2X communication includes acquiring signal information about a plurality of traffic lights installed at an intersection, determining a signal error in at least one of the plurality of traffic lights by comparing signal information about at least two traffic lights intersecting or facing each other among the acquired signal information, and resetting a driving path of a host vehicle depending on a result of the determination.