Front-Side Blind-Angle Vehicle Control for Crossing Object Starts
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Solution Overview
Problem
Conventional vehicle control systems fail to initiate emergency running control early enough when a target object, such as a pedestrian or bicycle, is detected in a lateral area in front of the vehicle, leading to potential collisions due to delayed recognition and response.
Innovation Solution
A vehicle control apparatus equipped with a specific camera device capable of detecting blind angle target objects and a controller that adjusts the host vehicle's driving force based on the object's kind and movement state, ensuring timely suppression of the driving force when necessary to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If emergency running control is started based on relative lateral speed threshold, then control timing is improved for objects with high lateral speed, but control timing is delayed for objects that suddenly start moving from stopped state
Solution Approach 1:
The system performs preliminary action by suppressing driving force when a target object is detected in the lateral area in front of the vehicle, even before relative lateral speed reaches the threshold. This early suppression based on object position and type (pedestrian, bicycle, etc.) prevents the delay that would occur if waiting for speed threshold activation, thereby improving both control timing and collision prevention reliability
2Reliability
If driving force is suppressed early for all detected objects, then collision prevention is improved, but unnecessary suppression occurs for objects that do not pose collision risk
Solution Approach 1:
The system applies local quality by differentiating driving force suppression based on the specific type of target object detected. Different suppression levels are applied for different object types (pedestrians, bicycles, etc.) and based on their position in the lateral area, ensuring that suppression is applied appropriately only when necessary, thereby maintaining both collision prevention reliability and vehicle operation efficiency
Data Source
AI summary
An ECU of a vehicle control apparatus obtains, using a frontward PVM camera, front side target object information that includes information on a target object that is located in a blind angle detection area lateral to and outside of a target object detection area of a frontward camera. The ECU specifies, based on the front side target object information, a kind and a moving state of a blind angle target object, and determines a front side obstacle area based on the kind and moving state of the blind angle target object. When the ECU determines that a target object whose kind and moving state coincide with the kind and the moving state, respectively, to which the front side obstacle area corresponds is located in the front side obstacle area, the ECU decreases a driving force to suppress a start of moving of the host vehicle.