Vehicle Control Device for Obstacle Avoidance
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Solution Overview
Problem
When an oncoming vehicle tries to pass between a host vehicle and an obstacle in the oncoming lane, there is a risk of close proximity between the two vehicles, causing stress for occupants due to potential contact, especially if the host vehicle temporarily stops near the obstacle due to traffic congestion.
Innovation Solution
A vehicle control device with an external environment recognition unit, behavior determination unit, and operation determination unit that recognizes obstacles and vehicle behavior, determining if the host vehicle should stop in front of the obstacle to prevent close proximity with the oncoming vehicle, using sensors and control units to adjust the host vehicle's trajectory and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the host vehicle stops near the obstacle due to traffic congestion, then the host vehicle can maintain its position in the lane, but the risk of close proximity with oncoming vehicle increases causing stress for occupants
Solution Approach 1:
The control device performs preliminary action by determining the host vehicle's stopping position in advance before the oncoming vehicle reaches the obstacle. The operation determination unit calculates whether the host vehicle should stop in front of the obstacle based on predicted oncoming vehicle behavior, preventing the harmful close proximity situation before it occurs.
2Productivity
If the host vehicle travels beside the obstacle when no oncoming vehicle is present, then the host vehicle can maintain efficient travel, but the risk of close proximity with oncoming vehicle arises when one appears
Solution Approach 1:
The control device applies dynamics by making the host vehicle's travel behavior adaptive rather than fixed. The operation determination unit dynamically adjusts whether to stop in front of the obstacle based on real-time detection of oncoming vehicles and their behavior, allowing efficient travel when safe and preventing close proximity when risk is detected.
Solution Approach 2:
The control device uses feedback by continuously monitoring the oncoming lane for vehicles and their behaviors. The external environment recognition unit detects oncoming vehicles, and this information feeds back to the operation determination unit, which adjusts the host vehicle's stopping decision based on the detected oncoming vehicle's behavior patterns.
3Reliability
If the host vehicle stops in front of the obstacle when oncoming vehicle behavior is unpredictable, then close proximity is prevented, but traffic flow efficiency may be reduced
Solution Approach 1:
The control device applies parameter changes by adjusting the stopping distance parameter based on different conditions. When the oncoming vehicle's behavior is predictable and safe, the host vehicle stops at a standard distance. When behavior is unpredictable or risky, the stopping distance is increased, changing the safety parameter to prevent close proximity while minimizing impact on traffic flow.
Data Source
AI summary
In the case an external environment recognition unit recognizes that an obstacle that hinders traveling of an oncoming vehicle exists in an oncoming lane at a more forward position in a direction of progress than a host vehicle, and also recognizes that a preceding vehicle exists at a more forward position in the direction of progress than the obstacle, and further, in the case that a behavior determination unit determines that the preceding vehicle stops within a predetermined distance (first predetermined distance) from the obstacle, the operation determination unit causes the host vehicle to stop in front of the obstacle.