Biometric Acceleration Limit Control for Faster Vehicle Response
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Solution Overview
Problem
Existing acceleration limit control systems in vehicles often result in delayed acceleration response and deteriorated performance, especially on upward ramps, due to APS value adjustments. Additionally, drivers may experience discomfort and safety risks when encountering external events, leading to rapid acceleration.
Innovation Solution
An acceleration limit control apparatus and method that adjusts the acceleration limit level based on biometric information of the driver, such as heart rate and stress index, to determine whether to lower or raise the acceleration limit. This adjustment is made automatically and in real-time to match the driver's mental state and driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If accelerator position sensor (APS) value adjustment is performed to provide gradual acceleration, then acceleration control is improved, but acceleration response time deteriorates
Solution Approach 1:
The acceleration limit level is dynamically adjusted based on real-time biometric information (heart rate, stress index) and driving conditions (vehicle speed, accelerator pedal position). The system transitions from a static acceleration limit to a dynamic one that adapts to the driver's physiological state, allowing the limit to be raised when stress is detected and lowered when relaxed, thus improving response time while maintaining gradual acceleration control.
Solution Approach 2:
The system changes the acceleration limit parameter based on biometric parameters (heart rate, stress index). When the driver's heart rate exceeds a threshold or stress index indicates high arousal, the acceleration limit is raised to allow faster acceleration. When biometric parameters indicate a relaxed state, the limit is lowered to enforce gradual acceleration. This parameter adaptation resolves the contradiction by making the acceleration limit context-dependent.
2Reliability
If acceleration limit function is enabled to ensure safety, then driver and passenger safety is improved, but acceleration performance deteriorates
Solution Approach 1:
The acceleration limit parameter is adjusted based on biometric information and driving conditions. When the driver exhibits signs of stress (elevated heart rate, high stress index) or when external events require rapid response, the system raises the acceleration limit to maintain acceleration performance. When the driver is relaxed and conditions are normal, the limit is lowered to enhance safety. This dynamic parameter adjustment allows the system to adapt between safety and performance based on real-time context.
Solution Approach 2:
The system implements a dynamic acceleration limit that transitions between different levels based on the driver's physiological state and external conditions. Rather than maintaining a fixed conservative limit, the system dynamically adjusts the limit to match the situation, enabling high performance when needed and enhanced safety when appropriate, thus resolving the contradiction between safety and acceleration performance.
3Reliability
If fixed acceleration limit is applied to prevent reckless acceleration, then safety is improved, but acceleration adaptability to different driving conditions deteriorates
Solution Approach 1:
The acceleration limit transforms from a fixed value to a dynamic parameter that adapts to different driving conditions through biometric feedback. The system monitors the driver's heart rate and stress index in real-time, adjusting the acceleration limit accordingly. This allows the system to provide enhanced safety during normal relaxed driving while enabling rapid acceleration when stress or external events require it, thus achieving both safety and adaptability.
Solution Approach 2:
The system implements a feedback loop where biometric information (heart rate, stress index) and driving conditions are continuously monitored and used to adjust the acceleration limit. This closed-loop control allows the system to adapt the acceleration limit to match the driver's physiological state and external conditions, providing safety when needed and performance when required, thereby resolving the contradiction between fixed safety limits and adaptive performance.
Data Source
AI summary
An apparatus may be configured to determine whether to adjust an acceleration limit level associated with an acceleration limit operation for a corresponding vehicle speed range. The adjustment may be performed by using driver information acquired based on biometric information of a driver. The apparatus may be configured to control an adjustment of the acceleration limit level. The apparatus may be configured to change a limit acceleration of the vehicle that is accelerated based on a degree of accelerator pedal manipulation by the driver and the adjusted acceleration limit level.