Autonomous Braking Control for Mistaken Pedal Press After Stop
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Solution Overview
Problem
Existing driving assist systems fail to prevent rapid movement of a vehicle when a driver mistakenly presses the acceleration pedal after autonomous braking, leading to potential collisions with previously avoided obstacles.
Innovation Solution
A driving assist apparatus with an electronic control unit that executes autonomous braking and stopped state keeping control, and implements driving force limitation when a mistaken pressing operation is detected, limiting the driving force to prevent rapid vehicle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stopped state keeping control is terminated after autonomous braking, then the vehicle can resume normal operation, but the vehicle may rapidly move again if the driver mistakenly presses the acceleration pedal
Solution Approach 1:
The system performs preliminary detection of mistaken pressing operations by monitoring acceleration pedal operation patterns before the vehicle resumes normal operation. When a mistaken pressing pattern is detected, the system proactively limits acceleration output to prevent rapid vehicle movement, thereby maintaining safety while allowing normal operation to resume
Solution Approach 2:
The system continuously monitors acceleration pedal operation and provides feedback control by limiting acceleration output when mistaken pressing is detected. This closed-loop feedback mechanism ensures that the vehicle remains in a safe state while allowing normal operation to resume, resolving the contradiction between operational freedom and safety reliability
2Reliability
If the driving force limitation control is applied when mistaken pressing is detected, then rapid vehicle movement is prevented, but the vehicle cannot respond normally to legitimate acceleration requests
Solution Approach 1:
The system dynamically adjusts acceleration output based on real-time detection of pressing patterns. When a mistaken pressing pattern is detected, the system applies driving force limitation control to limit acceleration output. When normal pressing patterns are detected, the system restores full acceleration response. This dynamic adaptation resolves the contradiction between safety reliability and operational responsiveness
Solution Approach 2:
The system changes the acceleration output parameter based on the detected pressing pattern. By detecting characteristics such as pressing speed and holding time, the system determines whether to apply driving force limitation control or allow normal acceleration. This parameter-based differentiation enables the system to maintain safety while preserving normal operational capability
Data Source
AI summary
A driving assist apparatus executes an autonomous braking control when a predetermined autonomous stop condition becomes satisfied, executes a stopped state keeping control to keep the own vehicle stopped after stopping the own vehicle by the autonomous braking control, and terminates executing the stopped state keeping control when a predetermined stopped state keeping termination condition becomes satisfied while executing the stopped state keeping control. The driving assist apparatus executes a driving force limitation control to limit a driving force generated to move the own vehicle to a value smaller than the driving force which depends on an amount of operating the acceleration pedal when determining that the predetermined stopped state keeping termination condition is satisfied, and a mistaken pressing operation occurs. The mistaken pressing operation is an operation performed by a driver to mistakenly press an acceleration pedal with an intention to press a brake pedal.