Driving Assistance Timing Adjustment Using Steering Indicators
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Solution Overview
Problem
Existing driving assistance systems struggle to determine the appropriate timing for initiating collision avoidance measures, often activating unnecessarily when the driver has not clearly intended to avoid a collision, or failing to activate promptly when the driver has demonstrated an intention to do so.
Innovation Solution
A driving assistance apparatus that includes a target recognition section, an operation determination section, a timing calculation section, and a control section, which uses instantaneous and time-dependent indicators of the vehicle's steering to determine whether the driver has initiated a collision avoidance operation, adjusting the activation timing of safety systems accordingly to avoid unnecessary activations and ensure timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving assistance is started early to ensure timely collision avoidance, then collision avoidance effectiveness is improved, but driver annoyance increases due to unnecessary interventions
Solution Approach 1:
The system performs preliminary detection of driver intention through steering indicators before activating driving assistance. By monitoring steering angle, angular velocity, and yaw rate in advance, the system prepares to act only when genuine collision avoidance intention is detected, preventing unnecessary early interventions that would annoy the driver.
Solution Approach 2:
The system continuously monitors steering indicators and provides feedback to determine whether the driver has genuine collision avoidance intention. This feedback mechanism allows the system to distinguish between intentional steering for collision avoidance and normal steering operations, activating assistance only when the feedback confirms genuine intention.
2Object-affected harmful factors
If driving assistance is delayed to avoid unnecessary interventions, then driver annoyance is reduced, but collision avoidance response time increases
Solution Approach 1:
The system performs preliminary monitoring of steering indicators continuously, so that when genuine collision avoidance intention is detected, the assistance can be activated immediately without delay. The preliminary detection of steering angle, angular velocity, and yaw rate patterns ensures rapid response when needed while maintaining low false activation rates.
Solution Approach 2:
The system dynamically adjusts the support start timing based on the detected driver intention. When collision avoidance operation is detected through steering indicators, the timing is adjusted to be later (avoiding unnecessary intervention). When no collision avoidance operation is detected, the timing remains early (ensuring timely response). This dynamic adjustment resolves the time contradiction.
3Speed
If instantaneous steering indicators are used for quick detection, then responsiveness is improved, but false detection increases due to noise and instantaneous steering
Solution Approach 1:
The system merges multiple steering indicators (steering angle, steering angular velocity, and yaw rate) to detect driver intention. By combining these indicators and analyzing their temporal patterns, the system achieves both rapid detection and high accuracy, filtering out noise and instantaneous steering effects that would cause false detections.
Solution Approach 2:
The system uses feedback from multiple steering indicators to verify genuine collision avoidance intention. By continuously monitoring steering angle, angular velocity, and yaw rate, the system can distinguish between transient noise and genuine intention, maintaining high detection accuracy while preserving responsiveness.
Data Source
AI summary
A driving assistance apparatus determines, based on an instantaneous indicator which is an instantaneous value of a parameter regarding steering of the own vehicle, whether a driver has started a collision avoidance operation for avoiding a collision between a target and the own vehicle. When it is determined that the collision avoidance operation has been started, a support start timing for starting driving assistance for avoiding the collision or reducing collision damage is set to be a timing later than when the collision avoidance operation has not been started. The support start timing during a collision avoidance time period which is a time period until a predetermined set time has elapsed after it is determined that the collision avoidance operation has been started is set based on a time-dependent indicator for steering indicated by the instantaneous indicator at timings during the collision avoidance time period.