Vehicle Deceleration Control for Predicted Obstacle Risk
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Solution Overview
Problem
Existing vehicle control strategies plan for obstacles within the current perception range, including those outside the traveling lane or static obstacles, leading to unnecessary emergency braking and reduced safety and passenger experience.
Innovation Solution
The method determines predicted motion features of objects within the vehicle's perception field, assesses safety levels based on these features and preset conditions, and adjusts deceleration accordingly to avoid emergency braking for objects that do not pose a significant threat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the vehicle plans for all obstacles within the current perception range including those outside the traveling lane or static obstacles, then the obstacle detection coverage is improved, but unnecessary emergency braking occurs and safety is reduced
Solution Approach 1:
The patent applies local quality by differentiating the treatment of obstacles based on their location and type. Obstacles within the traveling lane are treated with high priority (emergency braking), while obstacles outside the traveling lane or static obstacles are treated with lower priority (no emergency braking). This selective approach optimizes the perception coverage while avoiding unnecessary emergency braking, thereby improving safety.
2Area of stationary object
If the vehicle plans for all obstacles within the current perception range, then the obstacle detection coverage is improved, but passenger experience is reduced due to unnecessary emergency braking
Solution Approach 1:
The patent differentiates the response based on obstacle characteristics. For obstacles outside the traveling lane or static obstacles, the system maintains perception coverage but avoids triggering emergency braking, thus improving passenger experience while retaining comprehensive detection capability.
3Reliability
If the vehicle applies emergency braking for all detected obstacles, then the safety response is improved, but unnecessary braking occurs for objects that do not pose a significant threat
Solution Approach 1:
The patent implements differential safety responses based on obstacle characteristics. Obstacles within the traveling lane trigger emergency braking for immediate safety, while obstacles outside the traveling lane or static obstacles trigger a lower-priority response. This resolves the contradiction by applying appropriate safety measures only where necessary, eliminating unnecessary braking while maintaining safety for genuine threats.
4Device complexity
If the vehicle treats all obstacles uniformly, then the control logic is simplified, but the flexibility in obstacle avoidance is reduced
Solution Approach 1:
The patent introduces conditional logic that classifies obstacles into different categories (within traveling lane vs. outside traveling lane, dynamic vs. static). This classification enables flexible obstacle avoidance strategies tailored to each obstacle type, improving adaptability while maintaining manageable control logic through systematic categorization.
Data Source
AI summary
A vehicle traveling control method, the method includes: determining predicted motion features of a to-be-avoided object within a perception visual field of a vehicle; determining a safety level of the to-be-avoided object relative to the vehicle according to the predicted motion features and preset safety conditions; and determining a target deceleration of the vehicle according to an attribute feature of the to-be-avoided object and the corresponding safety level, and controlling traveling of the vehicle according to the target deceleration.