Vehicle Restart Notification via Impulse Acceleration
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Solution Overview
Problem
Current adaptive cruise control systems may restart vehicle movement automatically for extended periods without driver intervention, potentially leading to inattentive vehicle operation, as they lack effective notifications for the driver about the restart.
Innovation Solution
A computer-implemented method and system that determine an automated stoppage of a vehicle based on low speed follow functionality, measure the duration of the stoppage, and provide an impulse acceleration during restart, with the amount and duration of the acceleration adjusted based on the stoppage duration and countermeasure parameters such as driver inattentiveness and road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the automated cruise control system allows automatic restarting of vehicle movement for longer periods (e.g., ten seconds) without driver intervention, then the system's automation capability and productivity are improved, but driver awareness and safety are worsened due to potential inattentiveness
Solution Approach 1:
The system performs preliminary action by providing a warning notification to the driver before the automated restart occurs. The controller determines a warning period based on the measured stoppage duration and issues a warning signal to alert the driver in advance, allowing the driver to prepare for the upcoming movement without compromising the automated restart functionality.
Solution Approach 2:
The system implements feedback by monitoring the driver's response to the warning notification. The controller evaluates whether the driver has become attentive based on the warning period and driver state, and adjusts the restart execution accordingly. This feedback mechanism ensures that automated restarts only occur when safe, maintaining both automation benefits and driver awareness.
2Reliability
If the system provides warning notifications to alert drivers before automated restart, then driver awareness is improved, but the system complexity and device complexity increase
Solution Approach 1:
The system applies self-service by utilizing existing vehicle notification infrastructure (such as display screens, audio systems, or haptic feedback mechanisms already present in modern vehicles) to provide driver warnings. Rather than introducing entirely new complex notification devices, the controller leverages available self-service capabilities within the vehicle's existing architecture to achieve driver awareness.
3Measurement precision
If the system measures stoppage duration and adjusts impulse acceleration accordingly, then the precision and adaptability of the restart notification are improved, but the control system complexity increases
Solution Approach 1:
The system implements dynamics by making the impulse acceleration characteristics variable rather than fixed. The controller dynamically adjusts the amount and duration of impulse acceleration based on the measured stoppage duration and driver state. This dynamic adaptation allows precise control that accounts for different stopping scenarios while using a single flexible control mechanism rather than multiple fixed systems.
Data Source
AI summary
A system and method for providing a notification of an automated restart of vehicle movement that include determining an automated stoppage of the vehicle based on an operation of a low speed follow functionality of the vehicle. The system and method also include measuring a duration of the automated stoppage of the vehicle and determining at least one countermeasure parameter. The system and method further include providing an impulse acceleration for a duration of time during the automated restart of vehicle movement.