Stop-Hold Release Control for Driver Abnormality Detection
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Solution Overview
Problem
Existing vehicle control systems face limitations in accurately determining driver abnormalities based solely on image analysis, leading to potential inaccuracies in detecting driver conditions.
Innovation Solution
A vehicle control device that includes a stop hold release control unit, operation input acquiring unit, driver abnormality determining unit, and determination correction unit to enhance driver abnormality detection by integrating various sensors and controls, such as brake systems, steering, and driver condition recognition, allowing for more accurate determination through multiple input validation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If image analysis is used to determine driver abnormality, then the determination process can be automated, but the accuracy of abnormality determination is limited
Solution Approach 1:
The driver abnormality determination process is segmented into multiple independent assessment dimensions: image analysis results, stop hold release operation analysis, and response time measurement. Each dimension independently evaluates different aspects of driver state, and the final determination integrates these separate assessments to achieve higher overall accuracy while maintaining automation.
2Ease of operation
If the stop hold release control is executed automatically, then the ease of operation is improved, but the reliability of driver state monitoring deteriorates when the driver does not respond
Solution Approach 1:
The system implements feedback by monitoring whether the driver performs the stop hold release operation within a predetermined time period after the stop hold control is executed. This feedback mechanism detects driver responsiveness and provides information about driver state, allowing the system to maintain reliability even while providing automatic stop hold release functionality.
Solution Approach 2:
The system executes stop hold release control in advance based on predetermined conditions without requiring immediate driver input. This preliminary action improves ease of operation by automatically handling stop hold release, while subsequent monitoring of driver response ensures reliability through detection of abnormal states.
3Productivity
If the determination correction is executed to lower the abnormality threshold, then the productivity of abnormality detection is improved, but the measurement precision may be affected
Solution Approach 1:
The abnormality determination threshold is made dynamic rather than fixed. The system executes determination correction to lower the threshold when specific conditions are met (such as when stop hold release control is executed and driver response is not detected). This dynamic adjustment allows the system to adapt its sensitivity based on operational context, improving detection productivity while maintaining overall determination accuracy through condition-based modulation.
Data Source
AI summary
To effectively improve the accuracy of abnormality determination of a driver, provided is a vehicle control device comprising a stop hold release control unit configured to execute a stop hold control for holding by activating a brake apparatus, and execute a release control for releasing a stop hold by the brake apparatus when a predetermined release condition is satisfied, an operation input acquiring unit for acquire an operation input of a driver, a driver abnormality determining unit for determining whether the driver is in an abnormal state, and a determination correction unit configured to execute a determination correction for making the driver abnormality determination unit easily determine that the driver is in the abnormal state, when the release control is executed by the stop hold release control unit and the operation input acquisition unit does not acquire the operation input.