Driver Fatigue and Distraction Detection with Priority Alarm Logic

The detection system is divided into separate modules: a fatigue state detection module that analyzes eye closure, yawning, and head posture, and a distraction state detection module that monitors head orientation and gaze direction. Each module independently processes specific features and generates separate detection results, which are then integrated by the alarm module to provide comprehensive safety monitoring without requiring a completely complex unified system.

The alarm module implements intelligent feedback control by evaluating multiple detection results and determining the most appropriate alarm strategy. When both fatigue and distraction states are detected, the system prioritizes fatigue state alarm information since it represents a more severe safety risk. The alarm module suppresses redundant distraction alarms during fatigue events, providing targeted feedback that improves safety without causing excessive driver annoyance.

The system applies different detection thresholds and analysis depths to different states based on their safety criticality. The fatigue state detection uses stricter criteria and more comprehensive feature analysis (eye closure duration, yawning frequency, head droop angle) since fatigue represents a higher safety risk. The distraction detection uses slightly relaxed thresholds for head orientation and gaze direction, allowing faster processing while maintaining adequate detection accuracy for less critical states.