Driving Consciousness Estimation Device Prioritizing Reaction Time
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Solution Overview
Problem
Existing driving consciousness estimation devices do not adequately consider reaction time and field of view when estimating driving readiness, which are critical factors for improving driving safety.
Innovation Solution
A driving consciousness estimation device that prioritizes reaction time and field of view when estimating driving readiness, giving them greater influence than time duration of eye glance away from the road environment and arousal level, to enhance driving safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving readiness degree is estimated based on reaction time and field of view with greater influence, then the driving safety is improved, but the complexity of the estimation system increases
Solution Approach 1:
The patent changes the parameters used for estimation by prioritizing reaction time and field of view measurements over other factors like eye glance duration and arousal level. This parameter change allows the system to focus on the most critical safety indicators while maintaining a manageable estimation framework.
2Measurement precision
If the influence of reaction time and field of view is increased in the estimation, then the accuracy of driving readiness assessment is improved, but the difficulty of measuring and detecting these parameters increases
Solution Approach 1:
The system performs preliminary measurements of reaction time and field of view before critical driving situations arise. By continuously monitoring these parameters in advance, the system establishes baseline data that can be quickly referenced during estimation, reducing the real-time measurement burden while maintaining high accuracy.
Data Source
AI summary
A driving consciousness estimation device includes a driving readiness degree estimation unit configured to estimate a driving readiness degree relating to a driving consciousness of a driver based on a reaction time or a width of field of view of the driver and at least one of a time duration of eye glance away from road environment and an arousal level of the driver. An influence of the reaction time or the width of the field of view on the driving readiness degree estimated by the driving readiness degree estimation unit is greater than an influence of at least one of the time duration of eye glance away from road environment and the arousal level on the driving readiness degree.