Automobile Anti-Dazzling System Using Infrared Shielding
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Solution Overview
Problem
Drivers are temporarily blinded by the reflection of headlights from oncoming vehicles onto their rearview mirror, posing a risk of accidents due to discomfort and reduced visibility at night.
Innovation Solution
An anti-dazzling system for automobiles that includes a sensing unit, processing unit, and display module, utilizing infrared signals to calculate and create a shaded area on the windshield to block incoming light from high beams, preventing glare by determining the windshield size and distance between vehicles through signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a driver drives at night with standard windshield and rearview mirror, then the driver can see the road ahead, but the lights from oncoming vehicles are reflected onto the rearview mirror and dazzle the driver, causing temporary blindness and discomfort
Solution Approach 1:
An infrared signal transmitting unit is introduced as an intermediary between the oncoming vehicle's headlights and the driver's eyes. This unit transmits infrared signals to identify oncoming vehicles and calculate their position, enabling the system to proactively shield the driver's line of sight before dazzling occurs.
Solution Approach 2:
The system performs preliminary detection of oncoming vehicles using infrared signals and calculates potential glare areas on the windshield. By identifying the hazard before it affects the driver, the system can pre-position the shielding area to prevent dazzling from occurring in the first place.
2Object-affected harmful factors
If the driver uses existing anti-dazzling mirrors that automatically dim, then some glare reduction is achieved, but the driver still experiences discomfort and temporary blindness from high beam lights
Solution Approach 1:
The patent replaces the passive mechanical dimming mechanism of traditional anti-dazzling mirrors with an active optical shielding system. Instead of merely reducing the intensity of reflected light, the system uses a display module to create an opaque shielding area that physically blocks the light path, providing more reliable protection against high beam dazzle.
Solution Approach 2:
The display module changes its optical properties by becoming opaque in specific areas to create the shielding effect. This dynamic change in optical transparency allows the system to adaptively block light paths based on detected oncoming vehicles, providing reliable glare protection while maintaining overall visibility.
3Object-affected harmful factors
If the system creates a large shielding area on the windshield to block all potential glare, then dazzle prevention is improved, but the driver's overall visibility and field of view are reduced
Solution Approach 1:
The shielding area is applied locally rather than globally. The display module creates opacity only in the specific region of the windshield where glare is detected or predicted to occur, leaving the rest of the windshield transparent. This localized approach protects the driver from dazzling while preserving the maximum possible field of view.
Solution Approach 2:
The shielding area is dynamic and adaptive rather than static. The system continuously calculates the position and size of the shielding area based on the detected oncoming vehicle's position, distance, and headlight orientation. This allows the shielding area to move and resize as needed, providing protection only when and where required, thus maintaining optimal visibility.
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 prevents driver dazzling by calculating the necessary shielding area on the windshield based on vehicle size and distance, ensuring safer nighttime driving by reducing glare from oncoming headlights.
Implementation Method 1
a sensing unit 11 configured to transmit and receive signals
Implementation Method 2
The area on the display module 17 can be opaque to shield the incident light to the windshield 20
Data Source
AI summary
An automobile includes an anti-dazzling system and a luminous body. The anti-dazzling system includes a sensing module, a calculating unit, a controlling module and a display module. The sensing module includes a signal receiver and a recorder. The signal receiver defines a through hole and a signal receiving chip is received therein. The signal receiving chip can receive infrared light through the hole. The recorder can obtain an emitting time and a receiving time of the infrared light, and send the emitting time and the receiving time to the calculating unit. The calculating unit calculates a size and a location of the display module to be shielded, and sends the size and the location of area to be shielded to the controlling module to control the correspondingly area of the display module being opaque or translucent. The present disclosure also provides an anti-dazzling method.