Vehicle Drowsiness Notification via Escalating Visual and Audio Alerts
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Solution Overview
Problem
Existing drowsiness detection systems for vehicles often alert both the driver and passengers with audio cues, causing annoyance to passengers and potentially failing to effectively maintain the driver's alertness.
Innovation Solution
A drowsiness sign notification system that uses a driver monitor to detect drowsiness and provides a first notice through display or vibration to the driver without audio, followed by an audio-based notice if drowsiness persists, ensuring the driver remains alert without disturbing passengers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio guide is used to notify driver of drowsiness, then driver alertness is improved, but passenger annoyance increases
Solution Approach 1:
The notification system is segmented into multiple channels: visual notification (initial), audio notification (subsequent), and seat vibration (subsequent). This segmentation allows selective application of notification methods based on driver response, using non-audio methods first to avoid passenger annoyance while maintaining driver alertness.
Solution Approach 2:
The system implements periodic notification with escalating intensity: initial visual notification, followed by audio notification if drowsiness persists, then seat vibration if still ineffective. This periodic escalation ensures driver alertness while minimizing unnecessary audio notifications that would annoy passengers.
2Reliability
If audio notification is used immediately, then driver alertness is restored quickly, but passenger comfort deteriorates
Solution Approach 1:
The system performs preliminary action with visual notification before resorting to audio notification. This preliminary non-audio notification attempts to restore driver alertness first, and only if ineffective does it proceed to audio notification, thereby protecting passenger comfort while maintaining driver safety.
3Reliability
If multiple notification methods are used, then driver alertness is maintained effectively, but system complexity increases
Solution Approach 1:
The notification system dynamically adjusts its complexity based on driver response. It starts with simple visual notification and only activates additional notification methods (audio, seat vibration) if the driver remains drowsy. This dynamic adaptation maintains driver alertness effectively while avoiding unnecessary system complexity when not needed.
Data Source
AI summary
A drowsiness sign notification system applied to a vehicle includes a driver monitor and a controller. The driver monitor detects a driver state being a state of a driver of the vehicle. The controller executes a drowsiness sign determination process that determines whether or not the driver shows a drowsiness sign based on the driver state. When it is determined that the driver shows the drowsiness sign, the controller executes a first drowsiness sign notification process that gives a first drowsiness sign notice to the driver through display or vibration without using audio. When it is determined again that the driver shows the drowsiness sign after the first drowsiness sign notification process, the controller executes a second drowsiness sign notification process that gives a second drowsiness sign notice to the driver through audio.