Driving Support Apparatus Erroneous Accelerator Detection
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Solution Overview
Problem
Existing driving support apparatuses fail to continue collision prevention control effectively when a driver mistakenly operates the accelerator pedal instead of the brake pedal, leading to erroneous operations that can result in the automatic braking being prematurely stopped, even when the vehicle is still at risk of collision.
Innovation Solution
A driving support apparatus that includes an object detector and a prohibitor configured to continue collision prevention control even when the accelerator pedal operation exceeds a stop threshold value, within a specific period after an erroneous operation is detected, ensuring the control is maintained regardless of the pedal operation amount during this period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the accelerator pedal operation amount exceeds the stop threshold value during collision prevention control, then the driver is assumed to have cancellation intention and automatic braking is stopped, but this causes premature termination of collision prevention control when the driver is in a panicked state or has erroneously operated the accelerator pedal
Solution Approach 1:
The system performs preliminary detection of erroneous operation patterns (simultaneous depression of accelerator and brake pedals, or rapid depression-release-depression sequence) before the accelerator pedal operation amount exceeds the stop threshold. When such erroneous operation is detected, the system proactively sets a flag to prohibit automatic braking stop, ensuring collision prevention control continues even if the accelerator pedal operation exceeds the threshold value.
Solution Approach 2:
The system continuously monitors accelerator and brake pedal operation amounts and provides feedback to determine whether erroneous operation has occurred. By comparing the operation patterns against predefined erroneous operation conditions, the system dynamically adjusts whether to stop automatic braking based on the detected feedback, rather than relying solely on the accelerator pedal threshold.
2Speed
If the system stops automatic braking when accelerator pedal operation exceeds the threshold to respond to driver input, then the system is responsive to driver cancellation intention, but it fails to maintain collision prevention control when the driver is in a panicked state
Solution Approach 1:
The system performs preliminary detection of panicked operation patterns (simultaneous depression of pedals or rapid depression-release-depression) before the accelerator operation exceeds the stop threshold. By detecting these patterns in advance and setting the erroneous operation flag, the system ensures that collision prevention control continues reliably without being prematurely stopped by subsequent accelerator pedal operations during the panicked state.
3Device complexity
If the system uses a fixed threshold value for accelerator pedal operation to stop automatic braking, then the control logic is simple and easy to implement, but it cannot distinguish between intentional cancellation and erroneous operation
Solution Approach 1:
The system segments the accelerator pedal operation detection into two independent detection mechanisms: (1) detection of erroneous operation patterns (simultaneous depression with brake pedal, or rapid depression-release-depression sequence) that sets an erroneous operation flag, and (2) detection of cancellation intention based on accelerator pedal operation threshold. By segmenting these detection functions, the system maintains simple threshold-based control logic while adding precise erroneous operation detection through pattern recognition.
Solution Approach 2:
The erroneous operation flag acts as an intermediary between the accelerator pedal operation detection and the automatic braking stop control. Instead of directly stopping automatic braking when the accelerator threshold is exceeded, the system uses the flag as a mediator to determine whether to stop or continue control, thereby distinguishing between intentional cancellation and erroneous operation without complicating the overall control logic.
Data Source
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AI summary
A driving support apparatus (10) executes collision prevention control for avoiding collision with the object when a possibility of a vehicle (VA) colliding with an object based on object information (e.g., distance, direction, and relative speed) acquired by a millimeter wave radar device (21) and a camera device (22) is high. Further, the driving support apparatus does not execute the collision prevention control when an accelerator pedal operation amount is equal to or larger than a stop threshold value. However, the driving support apparatus executes the collision prevention control even when the accelerator pedal operation amount is equal to or larger than the stop threshold value within a specific period of from a start point at which a predetermined erroneous operation condition is satisfied, to an end point, which is a time point after a predetermined consideration period has elapsed since the erroneous operation condition has no longer been satisfied.