Vehicle Control Device Timing Adjustment for Driver Comfort
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Solution Overview
Problem
Existing vehicle control systems face challenges in reducing driver discomfort while maintaining collision avoidance performance, particularly when unexpected objects approach, leading to a compromised sense of security due to delayed operation timings.
Innovation Solution
A vehicle control device that operates two types of driving assistance systems with different timing thresholds, delaying the second assistance for recognized objects and maintaining normal timing for unrecognized objects, thereby reducing driver discomfort without compromising security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation timing of the second driving assistance (PCS) is delayed when the first driving assistance (danger avoidance system) is operated, then driver discomfort is reduced, but the sense of security deteriorates when unexpected objects approach
Solution Approach 1:
The patent applies local quality by differentiating the operation timing control of PCS based on the type of object detected. When the object is recognized by the danger avoidance system, PCS operation is delayed to avoid driver discomfort. When the object is not recognized (unexpected object), PCS operates at normal timing to ensure safety. This localized differentiation resolves the contradiction between driver comfort and sense of security.
2Reliability
If the second driving assistance operates at normal timing, then the sense of security is maintained, but driver discomfort increases due to unnecessary operations
Solution Approach 1:
The patent changes the operational parameter (threshold value) of PCS dynamically based on the operational state of the danger avoidance system. When danger avoidance system is active and detects an object, the PCS threshold is adjusted to delay operation, reducing driver discomfort from unnecessary alerts. This parameter adjustment resolves the contradiction by adapting system behavior to current conditions.
Data Source
AI summary
A vehicle control device includes at least one electronic control unit configured to recognize at least one object, calculate a time to collision, operate first driving assistance, when the time to collision is equal to or less than a first threshold value, operate second driving assistance for avoiding the collision between the at least one object and the host vehicle or reducing damage of the collision, when the time to collision is equal to or less than a second threshold value smaller than the first threshold value, and set, while the first driving assistance is operated, the second threshold value to a second setting value smaller than a first setting value set when the first driving assistance is not operated, when a second target object causing the second driving assistance to operate is the same object as a first target object causing the first driving assistance to operate.