Road Surface Image Projection Control for Pedestrian Visibility
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Solution Overview
Problem
Existing road surface image rendering technologies in vehicles often distract drivers by brightly projecting patterns on the road surface, making it difficult for them to notice pedestrians and bicycles on the road shoulder, especially at night.
Innovation Solution
A vehicle system with a detection device to identify pedestrians or bicycles on the road shoulder, controlling light projection to either stop or adjust the road surface images to enhance visibility of these objects, thereby reducing driver distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If road surface images are projected brightly to improve visibility and information transmission, then the vehicle can provide information to the driver and others, but pedestrians and bicycles on the road shoulder become difficult to notice, especially at night
Solution Approach 1:
The patent implements dynamic control of the light projection system by detecting the presence of pedestrians or bicycles on the road shoulder and automatically adjusting the projection state. When pedestrians or bicycles are detected, the system stops or modifies the road surface image projection to enhance visibility of these vulnerable road users. This dynamic adaptation resolves the contradiction by making the illumination intensity conditional rather than constant, allowing the system to provide information when safe and prioritize safety when pedestrians are present.
Solution Approach 2:
The system changes the operational parameters of the light projection member based on detection results. Specifically, it alters the state from projecting bright road surface images to stopping or modifying projection when pedestrians or bicycles are detected on the road shoulder. This parameter change directly addresses the contradiction by adjusting illumination intensity according to real-time conditions, ensuring that information provision does not compromise safety.
2Loss of information
If road surface images are projected to convey vehicle traveling information, then information communication is improved, but the driver's attention may be diverted from the road shoulder
Solution Approach 1:
The patent employs a feedback mechanism where the detection device continuously monitors the road shoulder for pedestrians or bicycles, and this detection information feeds back to control the light projection member. When pedestrians or bicycles are detected, the system responds by stopping or modifying the road surface image projection. This feedback loop ensures that information transmission does not compromise safety, as the system automatically adjusts based on real-time road conditions, thereby maintaining driver awareness of vulnerable road users.
Solution Approach 2:
The system dynamically adjusts the information transmission function based on detected conditions. Rather than continuously projecting road surface images, the system activates or deactivates projection based on the presence of pedestrians or bicycles on the road shoulder. This dynamic behavior resolves the contradiction between information communication and driver awareness by making information provision conditional on safety considerations.
3Loss of information
If light projection is used for road surface image rendering, then visual information is provided, but it creates harmful distraction effects that reduce safety
Solution Approach 1:
The system takes preliminary anti-action by detecting pedestrians or bicycles on the road shoulder before the light projection could potentially cause harmful distraction. The detection device identifies vulnerable road users in advance, and the control system preemptively stops or modifies the road surface image projection to prevent distraction from occurring. This preliminary protective action resolves the contradiction by preventing the harmful effect before it can manifest.
Solution Approach 2:
The system converts the potential harmful effect of light projection into a beneficial safety feature. By using the detection device to identify when projection would be harmful, the system transforms the situation into an opportunity to enhance safety by stopping projection. The potential harm of distraction is converted into a benefit of improved safety awareness, as the system automatically adjusts to prioritize the detection of vulnerable road users over information provision.
Data Source
AI summary
A vehicle with a road surface image rendering function includes a light projection member, a controller, and a detection device. The light projection member is configured to project light for road surface image rendering toward a road surface in front of the vehicle. The controller is configured to control light projection for of road surface image rendering. The detection device is configured to detect a pedestrian or a bicycle on a road shoulder in front of the vehicle on the road surface where a road surface image is rendered. The controller is configured to, when the pedestrian or the bicycle on the road shoulder in front of the vehicle is detected, change the light projection for the road surface image rendering by the light projection member so as to promote visual recognition of the pedestrian or the bicycle on the road shoulder in front of the vehicle.