Driver Relaxation Score Notification During Automated Driving
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Solution Overview
Problem
Existing notification systems for vehicle relaxation during automated driving always notify the degree of relaxation after automated driving ends, but sometimes it is preferable to not notify the degree of relaxation.
Innovation Solution
A notification device and method that detects driver behavior, calculates a relaxation score, and non-transitory recording medium provided with a computer program for a notification device, and non-transitory recording medium provided with a computer program for notifying information to a notification device, and non-transitory recording medium provided with a computer program for a notification device, and non-transitory recording medium provided with a computer program for a notification device, and non-transitory recording medium provided with a computer program for a notification device, and non-transitory recording medium provided with a computer program for a notification device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the degree of relaxation is always notified after automated driving ends, then the driver receives complete information about their relaxation state, but unnecessary notifications are generated when notification is not desirable
Solution Approach 1:
The system changes the notification parameter from 'always notify' to 'conditionally notify' based on detected driver behavior patterns. When relaxation behavior exceeds a threshold or specific conditions are met, the notification is suppressed, transforming the notification behavior from static to dynamic based on real-time parameters
Solution Approach 2:
The system introduces feedback by detecting driver behavior during automated driving and using this information to determine whether to notify the relaxation degree. The detection unit monitors driver actions, and this feedback loop enables the system to adaptively decide on notification, preventing unnecessary alerts when the driver exhibits certain behaviors
2Loss of information
If relaxation notification is provided at all timings, then comprehensive feedback is given to the driver, but notification burden increases and may cause distraction
Solution Approach 1:
The system extracts only the necessary notification instances from all possible timings. By detecting specific driver behaviors and evaluating conditions, the system selectively notifies only when appropriate, removing unnecessary notification events while preserving important feedback moments
Solution Approach 2:
The system applies partial action by notifying the relaxation degree only at certain timings when conditions are satisfied, rather than at all timings. This selective approach provides sufficient feedback information while reducing overall notification frequency and associated processing burden
3Measurement precision
If the system monitors driver behavior continuously to calculate relaxation score, then accurate relaxation measurement is achieved, but system complexity and processing load increase
Solution Approach 1:
The detection unit serves multiple functions: it monitors driver behavior for relaxation score calculation, determines notification timing appropriateness, and evaluates conditions for score suppression. This multi-functional approach reduces overall system complexity by consolidating detection and control functions into a single integrated unit
Data Source
AI summary
A notification device is provided with an output device configured to notify information to a driver of a vehicle and a control device configured to control the output device. The control device detects behavior of the driver based on driver data expressing the state of the driver, calculates a score showing a degree by which the driver is relaxing based on the behavior of the driver, notifies the score, calculated based on behavior of the driver during automated driving by which driving operations of the vehicle are automatically performed, through the output device when a predetermined timing is reached, and does not notify the score when a predetermined condition stands even when the predetermined timing is reached.