Driving Assist Warning Adaptation for Mistaken Pedal Pressing
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Solution Overview
Problem
Existing driving assist systems fail to effectively warn drivers of mistaken acceleration pedal pressing, leading to panic and improper actions, especially after autonomous braking is initiated, as they do not consider the change in the driver's mental state from moving to stopped conditions.
Innovation Solution
A driving assist apparatus equipped with sensors and an electronic control unit that detects mistaken acceleration pedal pressing, initiates autonomous braking, and adjusts the warning manner from urgent to calming based on the vehicle's state, using voice sounds and displays to prompt the driver to release the pedal or press the brake, with volume, rate, and cycle changes to match the driver's mental state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the warning lamp is turned on continuously to warn the driver of mistaken pressing operation, then the driver can be alerted to the error, but the driver may become panicked and continue pressing the acceleration pedal
Solution Approach 1:
The warning system dynamically changes its behavior based on vehicle state. When the vehicle is moving, the warning lamp flashes and warning sound is output at high volume to alert the driver urgently. When the vehicle stops, the warning lamp changes to steady illumination and warning sound volume is reduced, adapting the warning intensity to the current situation to prevent driver panic while maintaining effectiveness.
Solution Approach 2:
The system changes warning parameters (lamp illumination pattern and sound volume) based on the vehicle's motion state. The warning lamp switches between flashing and steady states, and the warning sound volume is adjusted between high and low levels, using parameter changes to match the driver's mental state and prevent panic while ensuring proper response.
2Reliability
If the autonomous braking control is activated to stop the vehicle rapidly, then the collision with obstacle can be prevented, but the driver's mental state changes from urgent to calm requiring different warning approach
Solution Approach 1:
The system uses feedback from the vehicle's motion state (moving or stopped) to adjust the warning behavior. The ECU monitors whether the vehicle is moving or has stopped due to autonomous braking, and based on this feedback, switches between first warning manner (urgent) and second warning manner (calming), ensuring the warning adapts to the driver's changing mental state.
Solution Approach 2:
The warning system transitions from a static approach to a dynamic one that responds to vehicle state changes. When the vehicle stops due to autonomous braking, the system automatically switches from flashing lamp with high-volume sound to steady lamp with low-volume sound, making the warning system versatile enough to handle different driver mental states.
3Device complexity
If the warning manner remains unchanged after autonomous braking stops the vehicle, then the system structure is simple, but the driver may not take proper action due to changed mental state
Solution Approach 1:
The warning system incorporates dynamic behavior based on vehicle state without requiring complex additional hardware. The ECU controls the warning lamp and sound output to change patterns (flashing to steady, high volume to low volume) based on whether the vehicle is moving or stopped, achieving adaptive warning through control logic rather than structural complexity.
Solution Approach 2:
The system changes warning parameters (illumination pattern and sound volume) based on vehicle motion state. This parameter-based adaptation allows the simple warning system structure to become effective in different situations, ensuring the driver takes proper action regardless of whether the vehicle is moving or has stopped due to autonomous braking.
Data Source
AI summary
A driving assist apparatus executes an autonomous braking control to autonomously stop a vehicle when a level of potential that the vehicle collides with an obstacle is larger than a predetermined level. The driving assist apparatus executes a stopped state keeping control to keep the vehicle stopped to prevent moving of the vehicle after the vehicle is stopped by the autonomous braking control. The driving assist apparatus performs a warning to warn a driver of the vehicle when the driver performs a mistaken pressing operation of mistakenly pressing an acceleration pedal with an intention to press a brake pedal. The driving assist apparatus changes a manner of performing the warning from a first manner to a second manner when the driving assist apparatus stops the vehicle by the autonomous braking control while the driving assist apparatus is performing the warning.