Computer Vision Driver Fatigue Monitoring With Real-Time Road Warnings

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Solution Overview

Problem

Current fatigue driving monitoring technologies on freeways lack real-time performance and accuracy, leading to inadequate control of fatigue driving, which increases the risk of traffic accidents due to their reliance on driving time alone and misjudgment of driver fatigue states.

Innovation Solution

A computer vision-based fatigue driving monitoring, reminding, and early-warning system that uses video recording devices, driving timing devices, and analysis processors to identify fatigue characteristic postures and levels, providing real-time reminders and sharing fatigue safety indices with traffic management departments to reduce accidents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If driving time alone is used to define fatigue driving, then the monitoring system is simple to implement, but the measurement precision of driver fatigue state is poor

Engineering Contradiction:
Improvemonitoring system complexityVSAvoiddriver fatigue state measurement precision
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces traditional mechanical/time-based fatigue monitoring with computer vision technology. Video recording devices capture driver images, and analysis processors use image recognition algorithms to detect fatigue characteristics (eye closure, head position, facial expressions), substituting optical detection for time-based mechanical monitoring to achieve precise real-time fatigue state assessment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces video recording devices and analysis processors as intermediaries between the driver and the monitoring system. These intermediaries capture and analyze driver states without directly contacting the driver, enabling non-invasive, continuous, and accurate fatigue detection while maintaining system simplicity through automated image processing.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If traditional driving recorders and cameras are installed in cabs, then driving status information can be collected, but the real-time performance and accuracy of fatigue detection are insufficient

Engineering Contradiction:
Improvefatigue detection reliabilityVSAvoidresponse time for fatigue detection
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements continuous video recording and real-time image analysis to maintain uninterrupted monitoring of driver fatigue states. The system continuously captures driver images and processes them without interruption, ensuring continuous detection capability and eliminating gaps in monitoring that would compromise reliability and increase response time.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent establishes a feedback loop where the analysis processor continuously monitors driver images, detects fatigue states, and provides real-time feedback through warning signals. When fatigue characteristics are detected, the system immediately issues alerts to the driver, creating a closed-loop feedback mechanism that enhances detection reliability and reduces response time compared to traditional periodic recording systems.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11858419B2Fatigue driving monitoring, reminding and early-warning method and system based on computer vision
Publication Date: 2024.01.02 TIANJIN CHENGJIAN UNIV
  • US11858419B2 patent drawing
  • US11858419B2 patent drawing
  • US11858419B2 patent drawing

AI summary

Fatigue driving monitoring, reminding and early-warning method and system based on computer vision are provided. The system includes: a fatigue real-time monitoring system for identifying fatigue characteristic postures of a driver and obtaining a fatigue level according to frequencies of the fatigue characteristic postures and a driving time; a fatigue automatic reminding system for receiving the fatigue level, obtaining a vehicle real-time position information and providing the driver with a corresponding grade of reminder according to the fatigue level; and a fatigue information early-warning system for receiving the fatigue level and the vehicle real-time position information to obtain a fatigue safety index, so that a cloud map of fatigue road conditions is obtained according to the fatigue safety index and shared with traffic management departments and drivers for early-warning. It reduces the situation of fatigue driving on freeway and the hazard of traffic safety accidents caused by fatigue driving.