Driving Support System Blind Area Speed Control
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Solution Overview
Problem
Existing driving support systems fail to accurately compute the necessary speed adjustments and avoidance maneuvers when predicting collisions, leading to unnecessary support or inadequate support at critical times, causing discomfort for drivers due to low prediction accuracy, especially when the vehicle is accelerating, decelerating, or changing direction.
Innovation Solution
A driving support system that includes a blind area recognition unit, a target speed determining unit, and a driving support unit, which sets a target speed based on a safe-condition confirmation end point, start point, and deceleration point to ensure smooth passage through blind areas, considering the relative position, vehicle speed, and object speed, thereby reducing driver discomfort and improving support accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the existing driving support system uses predicted travel direction to determine collision likelihood, then the system can identify potential collision risks, but the accuracy of collision determination decreases when the host vehicle is accelerating, decelerating, or being steered
Solution Approach 1:
The system performs preliminary actions by setting the safe-condition confirmation end point in advance based on blind area recognition and assumed object speeds, rather than relying on inaccurate future position predictions. This allows the system to establish safety parameters before the actual driving situation unfolds, improving reliability during dynamic maneuvers
Solution Approach 2:
The patent introduces an intermediary concept of 'safe-condition confirmation end point' that mediates between the blind area recognition and collision determination. This intermediary point serves as a reference that is less sensitive to prediction errors, allowing accurate safety assessment even when future position prediction accuracy deteriorates
2Reliability
If the existing driving support system determines collision based on predicted travel direction, then the system can provide collision avoidance support, but the support timing becomes inaccurate causing unnecessary support or inadequate support at critical moments
Solution Approach 1:
The system calculates the safe-condition confirmation end point in advance using blind area recognition results and assumed speeds of objects appearing from blind areas. This preliminary calculation establishes accurate reference points before the actual driving situation develops, enabling timely and accurate driving support without relying on error-prone future position predictions
Solution Approach 2:
The patent changes the reference parameter from 'predicted future position' to 'safe-condition confirmation end point based on blind area and assumed object speed'. This parameter change makes the support timing more accurate because it is based on current recognizable conditions rather than uncertain predictions, eliminating unnecessary support and ensuring support at critical moments
3Reliability
If the driving support system excessively decelerates the host vehicle to ensure safety through blind areas, then collision avoidance is improved, but the driver experiences inconvenience and a feeling of strangeness
Solution Approach 1:
The system applies different speed control strategies to different spatial zones: full deceleration control before the safe-condition confirmation end point, and speed maintenance or gentle adjustment after passing the end point. This localized quality approach ensures collision avoidance where needed while maintaining driver comfort in safe zones
Solution Approach 2:
The patent changes the speed control parameter from 'excessive deceleration' to 'target speed based on safe-condition confirmation end point'. By using the end point as a reference, the system adjusts speed appropriately - decelerating only when necessary to pass through blind areas safely - rather than continuously excessive deceleration, thereby improving driver comfort while maintaining collision avoidance capability
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
In a driving support system, a target speed profile computing unit determines a target speed on the basis of a safe-condition confirmation end point that is set to a predetermined position in a travel direction of a host vehicle. The safe-condition confirmation end point is a point at which the host vehicle passes through a section following the safe-condition confirmation end point in advance of a moving object that appears from blind areas. In this way, by determining the target speed based on the safe-condition confirmation end point, the drive support control unit is able to support driving in consideration of driving action at the time when the driver actually causes the host vehicle to pass through near the blind areas. Thus, it is possible to appropriately support driving along a feeling of the driver such that inconvenience and a feeling of strangeness are reduced.