Vehicle Driver Assist Attentiveness Assessment
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Solution Overview
Problem
Existing vehicle driver assist systems lack accuracy in detecting sudden driver inattention, leading to inadequate intervention and increased risk of severe accidents, as they fail to reliably assess attentiveness and may issue unnecessary alerts.
Innovation Solution
A vehicle driver assist arrangement comprising a host vehicle lane position evaluation unit, steering wheel torque detection unit, pedal pressure detecting unit, and processing unit that assesses driver attentiveness based on lane position, steering wheel torque, and pedal pressure, issuing alerts only when the attentiveness level falls below a predetermined threshold, with adjustable alert timing to minimize false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic monitoring of driver's eyes and/or eyelid activity is used to detect tiredness, then some cases of sudden inattention can be recognized, but the accuracy in recognizing sudden inattention is insufficient and unnecessary alerts may be issued
Solution Approach 1:
The patent combines multiple detection methods (eye monitoring, lane position evaluation, steering wheel torque detection, pedal pressure detection) into a unified driver attentiveness assessment system. The processing unit integrates signals from all these sources to comprehensively assess driver attentiveness, thereby improving recognition accuracy while reducing false alerts through cross-validation of multiple indicators
Solution Approach 2:
The system continuously monitors multiple driver behavior parameters and provides feedback to the processing unit, which dynamically adjusts the attentiveness assessment. This feedback mechanism allows the system to distinguish between temporary distractions and genuine inattention, improving both detection accuracy and reliability by considering the temporal pattern of driver responses
2Reliability
If alert is issued immediately when attentiveness drops below threshold, then driver safety is improved, but false alarms increase due to temporary inattention
Solution Approach 1:
The system performs preliminary assessment by continuously monitoring multiple driver behavior parameters before issuing an alert. The processing unit evaluates lane position, steering torque, and pedal pressure in advance to determine whether the detected inattention is genuine or temporary, allowing the system to issue alerts only when multiple indicators consistently show reduced attentiveness
Solution Approach 2:
The system dynamically adjusts the attentiveness threshold and assessment criteria based on driving conditions and driver behavior patterns. Rather than using a fixed threshold, the processing unit adapts the assessment to account for normal variations in driver behavior, thereby reducing false alarms while maintaining safety
3Measurement precision
If multiple detection parameters are used to assess driver attentiveness, then accuracy is improved, but device complexity increases
Solution Approach 1:
The processing unit serves multiple functions: it processes signals from various sensors (eye monitoring, lane position, steering torque, pedal pressure), performs attentiveness assessment, determines alert timing, and controls alert issuance. This multi-functional design consolidates complexity into a single central unit rather than requiring separate systems for each function
Data Source
AI summary
A vehicle driver assist arrangement may include an output unit and a vehicle driver attentiveness assessment arrangement. The vehicle driver attentiveness arrangement may include a host vehicle lane position evaluation unit, a steering wheel torque detection unit, a pedal pressure detecting unit, and a processing unit. The processing unit is arranged to assess a level of vehicle driver attentiveness on the basis of a first, a second and a third signal transmitted to the processing unit by the host vehicle lane position evaluation unit, the steering wheel torque detection unit, and the pedal pressure detecting unit. The output unit is arranged to issue an alert in case the assessed level of vehicle driver attentiveness is below a predetermined threshold attentiveness level.