Driver Light Glasses Control for Fatigue Without Driving Glare
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Solution Overview
Problem
Existing methods for counteracting driver fatigue in motor vehicle operators, such as light therapy and ambient lighting, often impair road safety or inefficiently use energy, particularly during early morning shifts or low daylight conditions.
Innovation Solution
A method that utilizes position data and operating state data to activate or deactivate light glasses and ambient lighting in a motor vehicle, ensuring that light therapy is applied only when the driver is outside the vehicle and daylight intensity is low, thereby conserving energy and maintaining road safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light glasses are activated continuously to counteract driver fatigue, then driver fatigue is effectively counteracted, but road safety is impaired due to glare during driving
Solution Approach 1:
The light glasses system dynamically adjusts its operational state based on real-time detection of driver position. The control unit activates the light glasses when the driver is outside the vehicle and deactivates them when the driver enters the vehicle, transforming a static continuous operation system into a dynamic conditional operation system that adapts to changing conditions to resolve the contradiction between fatigue counteraction and road safety
Solution Approach 2:
The system implements feedback through position detection means that continuously monitor whether the driver is inside or outside the vehicle. This feedback loop provides real-time information to the control unit, which adjusts the light glass activation state accordingly, ensuring that the system responds to actual conditions rather than operating on fixed schedules or continuous activation
2Reliability
If light glasses are activated during driving, then driver fatigue is counteracted, but energy is wasted when daylight is sufficient
Solution Approach 1:
The system dynamically adjusts light glass activation based on real-time daylight intensity measurements. When daylight intensity exceeds a predefined threshold, the control unit deactivates the light glasses even if the driver is outside the vehicle, transforming continuous potential operation into conditional operation that adapts to environmental lighting conditions, thereby reducing energy waste while maintaining fatigue counteraction when needed
Solution Approach 2:
The system monitors daylight intensity as a key parameter and uses this parameter to control light glass activation. By comparing the measured daylight intensity against a threshold value, the system adjusts its operational parameters (activation/deactivation) to optimize energy consumption while maintaining effectiveness in low-light conditions where fatigue counteraction is most needed
3Reliability
If light glasses are activated at all positions, then driver fatigue is counteracted, but operating energy stores are depleted rapidly
Solution Approach 1:
The system implements dynamic conditional activation based on position detection, activating light glasses only when the driver is outside the vehicle and deactivating them when inside. This selective operation pattern extends the operating time of the light glasses by avoiding unnecessary activation during periods when the driver is already in the vehicle, thereby preserving energy stores while maintaining fatigue counteraction effectiveness during critical periods
Solution Approach 2:
The system applies partial action by activating light glasses only during specific conditions (driver outside vehicle, low daylight) rather than continuously. This selective partial activation is sufficient to counteract fatigue during the most critical periods when drivers are most vulnerable to fatigue (during loading/unloading or breaks), while extending overall operating time by avoiding activation during less critical periods
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively counteracts driver fatigue without compromising road safety by optimizing the use of light therapy and ambient lighting based on the driver's position and environmental conditions, extending the operational time of light glasses and ensuring safety during deliveries and driving.
Implementation Method 1
Light glasses are known from both WO 2017/176115 A1 and WO 2019/070119 A1 that should counteract fatigue in the wearer of the light glasses through the output of light
Data Source
AI summary
The invention relates to a method for preventing fatigue of a driver of a motor vehicle (4), with the steps of: acquiring position data (PDM0) indicative of the position of the driver, and activating and/or deactivating light glasses (10) worn by the driver depending on an evaluation of the acquired position data (PDM) indicative of the position of the driver.