Post-Crash Braking Control with Intentional Accelerator Cancellation
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Solution Overview
Problem
Existing post-crash braking control systems can unintentionally cancel automatic braking due to abrupt deceleration caused by collisions, leading to unintended cancellation of braking control against the driver's intention.
Innovation Solution
A braking control apparatus that includes a contact detector and a braking control unit, which performs post-crash braking control and cancels it when an accelerator operation is increased and decreased in a predetermined pattern, allowing the driver to intentionally cancel the braking control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If post-crash braking control is performed automatically upon collision detection, then vehicle deceleration and secondary collision prevention are improved, but unintended cancellation of braking control due to abrupt deceleration effects occurs
Solution Approach 1:
The system performs preliminary action by detecting accelerator operations in advance and storing them in a buffer before making the cancellation decision. This allows the system to distinguish between intentional driver operations and unintentional movements caused by collision deceleration, resolving the contradiction by preparing the necessary data beforehand to make more accurate control decisions.
Solution Approach 2:
The system dynamically adjusts the cancellation determination logic by introducing a buffer mechanism that adapts to the temporal characteristics of accelerator operations. Instead of immediately responding to accelerator input, the system buffers and analyzes the timing and sequence of operations, enabling dynamic differentiation between intentional and unintentional driver actions during post-crash braking.
2Adaptability or versatility
If accelerator operation detection is used to cancel post-crash braking control, then driver intention to move vehicle is recognized, but abrupt deceleration from collision causes false cancellation signals
Solution Approach 1:
The system performs preliminary action by detecting and buffering accelerator operations before making cancellation decisions. This allows the system to analyze the temporal pattern of operations in advance, distinguishing between intentional driver inputs and false signals caused by collision deceleration, thereby improving both adaptability and reliability.
Solution Approach 2:
The system uses feedback by continuously monitoring the buffer of accelerator operations and comparing the timing and sequence of detected operations against expected intentional patterns. This feedback mechanism allows the system to learn from and adapt to the characteristics of driver operations, improving the accuracy of cancellation signal recognition while maintaining adaptability to different driving scenarios.
3Object-affected harmful factors
If automatic braking force generation is implemented upon contact detection, then secondary collision prevention is improved, but control cancellation timing may be incorrect due to driver unintentional accelerator pressing
Solution Approach 1:
The system performs preliminary action by buffering accelerator operations and analyzing their temporal patterns before determining cancellation timing. This ensures that the braking control is maintained for the appropriate duration by distinguishing between intentional driver cancellation requests and unintentional accelerator pressing caused by collision deceleration, preventing premature termination of protective braking.
Solution Approach 2:
The system uses feedback by continuously monitoring buffered accelerator operations and adjusting the braking control duration based on the analyzed patterns. This feedback mechanism ensures that braking control is maintained until genuine driver cancellation intent is detected, preventing incorrect early termination while allowing timely cancellation when appropriately intended, thus optimizing both safety and control duration.
Data Source
AI summary
A braking control apparatus is configured to control braking force to be generated by a braking device of a vehicle. The braking control apparatus includes a contact detector and a braking control unit. The contact detector is configured to detect a contact of the vehicle. The braking control unit is configured to perform a post-crash braking control that generates the braking force in response to that the contact detector detects the contact and thereby decelerates the vehicle, and cancel the post-crash braking control in a case where an amount of operation of an accelerator operation device of the vehicle is increased and decreased in a predetermined pattern, in which the accelerator operation device is configured to receive an accelerator operation to be performed by a driver who drives the vehicle.