Vehicle Laser Headlight Collision-Risk Shutoff Control
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Solution Overview
Problem
Laser headlights in vehicles pose a safety risk due to their high power, which can cause permanent eye injuries if the light leaks during a collision, and existing solutions do not effectively address this issue.
Innovation Solution
A method for controlling the laser headlight of a vehicle, involving the use of reference information to determine collision risks and automatically turning off the headlight before a collision occurs, and turning it back on when the risk is eliminated, to prevent light leakage and ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If laser headlight power is increased to achieve high luminous flux, then illumination performance is improved, but safety risk increases due to potential eye injuries from light leakage
Solution Approach 1:
The control method performs preliminary actions by detecting collision risks before actual collision occurs and proactively turning off the laser headlight. The system monitors multiple parameters (radar data, camera images, acceleration signals) and takes preventive action when collision probability exceeds thresholds, eliminating the harmful effect before it can manifest.
Solution Approach 2:
The patent introduces intermediary components including risk assessment modules, sensors (radar, camera, acceleration sensors), and control units that mediate between the laser headlight and potential collision hazards. These intermediaries detect environmental conditions and control the headlight state, creating a safety buffer between the high-power light source and vulnerable targets.
2Object-affected harmful factors
If laser headlight is turned off during collision risk, then safety is improved, but illumination availability decreases
Solution Approach 1:
The system dynamically adjusts the laser headlight state based on real-time collision risk assessment. Rather than a static on/off control, the headlight operates dynamically - turning off only when necessary (when collision probability exceeds threshold) and remaining operational when safe, optimizing both safety and illumination availability through adaptive control.
Solution Approach 2:
The control method changes operational parameters by monitoring multiple variables (radar detection data, camera image analysis, acceleration sensor readings, yaw rate) and adjusting headlight state based on composite risk assessment. The system evaluates changes in these parameters over time to determine when to transition between on and off states, balancing safety requirements with illumination needs.
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
This solution effectively prevents laser light leakage during collisions, enhancing the safety of both the vehicle's occupants and external individuals by automatically managing the laser headlight's operation based on detected collision risks.
Implementation Method 1
the laser headlight uses a laser diode as an excitation light source to excite a light phosphor material, and converts the excitation light source into diffused white light
Data Source
AI summary
The present disclosure relates to apparatuses and methods for controlling a laser headlight of a vehicle. One example method includes obtaining first reference information, determining, based on the first reference information, that the vehicle has a collision risk or that a collision occurs to the vehicle, and generating first indication information that is used to turn off the laser headlight of the vehicle. The first reference information includes at least one of first map information, first information sensed by a roadside device, second information sensed by a sensing device on the vehicle, or first control information in the vehicle. When it is determined that the vehicle has a collision risk or that a collision occurs to the vehicle, the first indication information that is used to turn off the laser headlight of the vehicle is generated, so as to turn off the laser headlight.