Crosswalk Risk Area Control for Automated Vehicle Steering
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Solution Overview
Problem
Existing vehicle control systems are inadequate in performing suitable driving maneuvers with respect to moving objects, particularly when approaching crosswalks, as they fail to effectively manage risk areas and vehicle control based on environmental recognition.
Innovation Solution
A vehicle control device and method that includes a recognizer to identify the environment, a setter to define risk areas, and a controller to manage speed and steering, preventing the vehicle from entering risk areas when predetermined conditions are met, ensuring safe passage relative to moving objects and crosswalks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle control system sets risk areas based on basic recognition results, then the control system is simple, but the driving suitability with respect to moving objects is inadequate
Solution Approach 1:
The risk area is segmented into multiple zones: a first risk area extending from the vehicle to a first end of the crosswalk, and a second risk area extending from the first end to a second end of the crosswalk. This segmentation allows differentiated control strategies for different spatial zones, improving driving suitability without requiring complete system redesign.
Solution Approach 2:
The system performs preliminary risk assessment by setting risk areas in advance based on recognized moving objects and crosswalk positions. By pre-defining these risk zones before actual conflict occurs, the system enables proactive control decisions rather than reactive responses, enhancing driving suitability.
2Reliability
If the vehicle prevents entry into the first risk area, then the safety with respect to moving objects is improved, but the deceleration requirement increases the burden on occupants
Solution Approach 1:
Different quality control measures are applied to different risk areas. The first risk area (closer to the vehicle) triggers prevention control to ensure safety, while the second risk area (farther away) allows more flexible control. This localized differentiation achieves safety requirements while minimizing unnecessary deceleration burdens on occupants.
Solution Approach 2:
The system applies prevention control selectively rather than universally. By focusing prevention measures specifically on the first risk area where actual conflict is most likely, rather than applying excessive braking across all scenarios, the system achieves adequate safety while reducing unnecessary deceleration burden.
3Measurement precision
If the vehicle control system monitors the entire crosswalk area, then the measurement precision of risk areas is improved, but the computational load and system complexity increase
Solution Approach 1:
The crosswalk monitoring area is segmented into two distinct risk zones with different precision requirements. The first risk area receives higher precision monitoring since it represents immediate conflict zones, while the second risk area uses coarser monitoring. This segmented approach achieves necessary measurement precision without uniformly high computational load across the entire crosswalk area.
Data Source
AI summary
A vehicle control device includes a recognizer configured to recognize a surrounding environment of a vehicle, a setter configured to set a first risk area in a surrounding area of the vehicle on the basis of a recognition result of the recognizer, and a controller configured to control at least one of a speed and steering of the vehicle. The setter sets the first risk area so that the first risk area includes an area between the moving object and a first end of a crosswalk where the moving object is scheduled to arrive in the crosswalk when the moving object is entering the crosswalk which is provided in front of the vehicle and where the vehicle is scheduled to pass on the basis of the recognition result of the recognizer. The controller prevents the vehicle from entering the first risk area when a first predetermined condition is satisfied.