Vehicle Control System for Stopped Vehicle Avoidance
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Solution Overview
Problem
As safe driving assistance systems become more complex, prioritizing brake and steering request signals can lead to ineffective overall functioning, potentially resulting in failed collision avoidance.
Innovation Solution
A vehicle control system that detects stopped vehicles and adjacent lane conditions to execute avoidance control by adjusting speed and lane changes based on a speed distribution area, ensuring safe distance and speed maintenance relative to stopped vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple safe driving assistance systems output brake and steering request signals independently, then each system can function autonomously, but the overall system fails to effectively coordinate collision avoidance
Solution Approach 1:
The patent merges multiple independent safe driving assistance systems into a unified control framework where brake and steering request signals are integrated and coordinated through a common decision-making algorithm, enabling effective collision avoidance while managing system complexity
Solution Approach 2:
The control system is designed to handle multiple types of request signals (brake, steering, lane change) from different safety systems through a universal coordination mechanism that adapts to various collision scenarios and system configurations
2Speed
If the system prioritizes one request signal over another, then immediate action can be taken, but coordinated collision avoidance becomes ineffective in complex scenarios
Solution Approach 1:
The system dynamically adjusts the priority of different request signals based on real-time collision risk assessment, vehicle state, and environmental conditions, allowing flexible coordination that maintains both rapid response and effective collision avoidance
Solution Approach 2:
The control algorithm changes parameters such as brake force magnitude, steering angle, and lane change timing based on the relative priorities of concurrent request signals, enabling coordinated action that achieves both speed and reliability
3Reliability
If the system executes complex coordination algorithms, then collision avoidance effectiveness improves, but computational load and system complexity increase
Solution Approach 1:
The control algorithm is segmented into modular functional blocks that process different aspects of collision avoidance independently (risk assessment, signal prioritization, actuator control), reducing overall complexity while maintaining effectiveness
Solution Approach 2:
An intermediary coordination layer is introduced between the independent safety systems and the vehicle actuators, managing the complexity of signal integration and coordination while presenting simplified interfaces to both sides
Data Source
AI summary
Provided is a vehicle control device capable of efficiently performing vehicle control for safe driving assistance. A vehicle control device (ECU) (10) mounted in a vehicle is configured to: detect a stopped vehicle (3) located forward of the vehicle (1) in a traveling lane of the vehicle (1); set a speed distribution area (40) which defines a distribution of an allowable upper limit value of a relative speed of the vehicle (1) with respect to the stopped vehicle (3); detect a traveling state of a vehicle traveling in an adjacent lane of the vehicle (1); and, based on the traveling state of the vehicle in the adjacent lane and the speed distribution area (40) with respect to the stopped vehicle (3), execute an avoidance control of avoiding a collision with the stopped vehicle (3).