Variable Vehicle Beam Patterns for Driver State and Identification
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Solution Overview
Problem
Conventional LED head lamps provide only fixed beam patterns, making it difficult to adjust the beam pattern according to the driver's personal information or situational needs, limiting safety and adaptability.
Innovation Solution
A variable beam pattern lamp system that includes an input device for capturing personal information, a vehicle controller to differentiate between registered and unregistered drivers, and a lamp driving device to output customized beam patterns based on age, gender, fatigue level, mood state, and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional LED head lamp provides only fixed beam patterns, then the device complexity is reduced and ease of manufacture is improved, but the adaptability to different drivers and situations deteriorates
Solution Approach 1:
The patent implements dynamic beam pattern adjustment by enabling the LED array to switch between multiple predetermined beam patterns based on real-time detection of driver state (fatigue level, mood) and environmental conditions. The beam pattern is no longer fixed but dynamically adapts to current driving conditions, resolving the contradiction between adaptability and complexity through controlled variability.
Solution Approach 2:
The system changes operational parameters (beam pattern selection) based on detected driver state and environmental conditions. By varying the beam pattern parameter in response to measured conditions, the system achieves adaptability without fundamentally redesigning the entire lamp structure, thus managing complexity while improving versatility.
2Ease of operation
If the lamp system obtains and processes driver personal information, then the beam pattern personalization is improved, but the device complexity and information processing requirements increase
Solution Approach 1:
The system automatically detects driver state through integrated sensors (camera, microphone, temperature sensor) and autonomously selects appropriate beam patterns without requiring manual driver input. This self-service approach personalizes the beam pattern while minimizing the complexity of user interaction interfaces.
Solution Approach 2:
The system continuously monitors driver state and environmental conditions, processes this information, and adjusts beam patterns accordingly. This feedback loop enables automatic personalization by using real-time data from sensors to select optimal beam patterns, reducing the need for complex manual configuration systems.
3Reliability
If the system distinguishes between registered and unregistered drivers, then the safety and security are improved, but the measurement precision and identification complexity increase
Solution Approach 1:
The system performs preliminary registration of driver biometric data (face recognition, fingerprint) during setup phases. This pre-established database enables rapid and reliable identification during actual driving, reducing the difficulty of real-time identification while maintaining high security and reliability through advance preparation.
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
Enhances safety and convenience by providing personalized and adaptive beam patterns, distinguishing registered from unregistered users, and optimizing light settings for the driver's state and environment, improving visibility and preventing accidents.
Implementation Method 1
an image capture device that captures an image of a face of the driver
Implementation Method 2
an LED array that includes a plurality of LEDs arranged in a matrix pattern, and that has a variable beam pattern according to on/off states of the LEDs
Data Source
AI summary
A variable beam pattern lamp system for a driver provides an input device that receives personal information of the driver, a lamp driving device that drives an indoor or outdoor lamp of a vehicle to output a beam pattern matched to the driver, based on the personal information of the driver, the personal information being input through the input device, and a vehicle controller that determines whether the personal information is registered driver information or unregistered driver information, when the personal information of the driver is input through the input device, and controls the lamp driving device to drive the indoor or outdoor lamp of the vehicle using beam patterns respectively corresponding to that the personal information is the registered driver information and that the personal information is the unregistered driver information.