Pedal Misapplication Assist With Staged Braking Near Obstacles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Accidental depression of the accelerator pedal instead of the brake pedal while a vehicle is stopped, traveling, or starting can cause collisions with obstacles, leading to severe braking shocks and accidents.
Innovation Solution
A vehicle pedal misapplication safety assist system that uses obstacle detection sensors and accelerator pedal sensors to limit driving force and perform braking control when an obstacle is detected within a reference distance, reducing acceleration and providing warnings to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If braking operation is performed when distance to front obstacle is within reference distance, then collision prevention is improved, but braking shock experienced by driver and passenger increases severely
Solution Approach 1:
The braking process is divided into two distinct phases: a first braking operation with lower braking force applied first, followed by a second braking operation with higher braking force applied subsequently. This segmentation allows the system to achieve collision prevention while reducing the severity of braking shock by distributing the deceleration over time rather than applying maximum force immediately.
Solution Approach 2:
The system performs a preliminary braking operation before the main braking event. By applying a initial braking force that is lower than the subsequent braking force, the system prepares the vehicle for deceleration in advance, allowing the driver and passengers to adjust to the braking event and reducing the perceived shock while still achieving effective collision avoidance.
2Reliability
If braking operation is performed when distance to front obstacle is not accurately detected, then collision prevention may be improved, but vehicle collision accident may occur
Solution Approach 1:
The system continuously monitors the distance to the front obstacle using a distance detection device and adjusts the braking operations based on real-time feedback. The control device determines whether to perform first and second braking operations, and adjusts their parameters, based on the detected distance information. This feedback mechanism ensures that braking actions are appropriately timed and sized even when detection accuracy varies, maintaining collision prevention effectiveness.
3Reliability
If accelerator pedal depression is detected when obstacle is within reference distance, then driving force limitation is improved, but system complexity increases
Solution Approach 1:
The system combines multiple existing vehicle systems (accelerator pedal detection, obstacle detection, engine control, and brake control) into an integrated pedal misapplication prevention system. By merging these functions and having them communicate through a centralized control device, the system achieves reliable misapplication detection and response while leveraging existing infrastructure rather than adding entirely new complex subsystems.
Data Source
AI summary
A vehicle pedal misapplication safety assist system and method are disclosed. The system includes an obstacle detection sensor mounted in a vehicle to detect an obstacle within a reference distance and an accelerator pedal sensor that detects a depression amount of an accelerator pedal. The system also includes a vehicle controller configured to perform control for limiting a driving force of the vehicle when a determination is made that the detected obstacle is within the reference distance and the depression amount of the accelerator pedal is detected, based on a detection signal of the obstacle detection sensor and a detection signal of the accelerator pedal sensor. The system further includes a brake controller configured to perform braking control according to a command from the vehicle controller when the driving force of the vehicle is limited and the distance to the detected obstacle reaches a braking setting distance.