Driving Assistance Device Early Collision Avoidance Control
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Solution Overview
Problem
Existing collision avoidance systems relying on indirectly acquired movement information via wireless communication have low reliability, leading to potential unnecessary avoidance actions and occupant anxiety, as well as the risk of collisions with undetected moving objects.
Innovation Solution
A driving assistance device with a travel information acquisition unit, a first information acquisition unit, a second information acquisition unit, a collision determination unit, a presence determination unit, and an early control unit, which acquires and processes both internal and external movement information to determine the presence of moving objects and perform early control for timely collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If movement information is indirectly acquired via wireless communication, then the coverage range is extended, but the reliability of the acquired movement information is low
Solution Approach 1:
The patent combines direct detection results from vehicle-mounted detection devices with indirect detection results from external devices via wireless communication. By merging these two information sources, the system achieves both extended coverage range and maintained reliability, as the direct detection provides verified information while indirect detection extends the monitoring area.
Solution Approach 2:
The patent introduces a determination unit that acts as an intermediary to verify indirect detection information before using it for collision avoidance control. This mediator validates the reliability of movement information from external devices, ensuring that only verified information triggers avoidance actions, thus maintaining reliability while extending coverage.
2Reliability
If avoidance driving action is performed based on indirectly acquired movement information, then collision avoidance capability is improved, but unnecessary avoidance actions occur causing occupant anxiety
Solution Approach 1:
The patent implements a feedback mechanism where the determination unit continuously monitors and verifies movement information from both direct and indirect sources. This feedback loop ensures that avoidance actions are only triggered when movement information is confirmed reliable, preventing unnecessary actions that would cause occupant anxiety while maintaining effective collision avoidance capability.
Solution Approach 2:
The patent performs preliminary verification of indirect movement information through the determination unit before executing avoidance driving actions. This preliminary action validates the authenticity of detected moving objects, ensuring that avoidance maneuvers are based on confirmed threats rather than false detections, thereby eliminating unnecessary actions and occupant anxiety.
3Reliability
If avoidance driving action is performed with respect to undetected moving object, then collision probability is reduced, but occupant feels anxiety due to undetected object
Solution Approach 1:
The determination unit serves as an intermediary that cross-validates indirect detection information against direct detection results. When a moving object is detected by external devices but not by vehicle-mounted sensors, the determination unit verifies the information's reliability before triggering avoidance actions, enabling collision prevention with undetected objects while minimizing false alarms that cause occupant anxiety.
Solution Approach 2:
The patent merges direct detection information from vehicle-mounted devices with indirect detection information from external devices. This combination allows the system to detect and respond to moving objects that may be outside the direct detection range, reducing collision probability while the verification process ensures that actions are only taken when information reliability is confirmed, preventing unnecessary occupant anxiety.
Data Source
AI summary
A driving assistance device includes a travel information acquisition unit, a first information acquisition unit, a second information acquisition unit, a collision determination unit, a driving control unit, a presence determination unit, and an early control unit. When the presence determination unit determines that a moving object is present ahead of the own vehicle in its traveling direction in a case where the moving object is not detected by a detection device which is mounted on the own vehicle, the early control unit performs early control for advancing a timing at which the moving object is detected by the detection device and the driving control unit performs control so that the own vehicle performs avoidance driving action.