Directional Pedestrian Warning System for Electric Vehicles
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Solution Overview
Problem
Existing vehicle safety systems fail to promptly and effectively alert pedestrians of approaching vehicles, especially in scenarios where electric vehicles produce little noise, leading to potential accidents due to inadequate warning mechanisms.
Innovation Solution
A vehicle system that captures images of pedestrians using an imaging device, acquires their location information in real-time, and outputs directional warning sounds through a speaker array based on this information, ensuring alerts are only given in the pedestrian's direction and adjusted in intensity based on distance and presence of multiple pedestrians.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If warning sounds are output in all directions to alert pedestrians, then pedestrian awareness is improved, but unnecessary noise is generated in areas where no pedestrians are present
Solution Approach 1:
The patent applies local quality by directing warning sounds specifically toward the direction where pedestrians are detected using imaging devices, rather than outputting sounds uniformly in all directions. The controller adjusts the speaker array to emit sounds only in the identified pedestrian direction, making the warning system targeted and location-specific, thereby improving pedestrian awareness while avoiding unnecessary noise in pedestrian-free areas.
2Reliability
If warning sounds are output continuously to ensure pedestrian safety, then safety is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by continuously monitoring pedestrian locations through imaging devices and dynamically adjusting warning sound output based on real-time detection. The system activates warning sounds only when pedestrians are detected within a predetermined distance and deactivates them when no pedestrians are present, creating an on-demand periodic operation pattern that maintains safety while reducing unnecessary energy consumption during periods without pedestrians.
3Area of stationary object
If the speaker array outputs sounds in multiple directions to cover all potential pedestrian areas, then coverage is improved, but sound intensity in each direction is reduced
Solution Approach 1:
The patent resolves this contradiction by applying local quality through directional sound output. Instead of distributing sound energy uniformly across multiple directions, the controller directs the speaker array to concentrate sound intensity specifically in the direction where pedestrians are detected. This focused approach maintains high sound intensity in the target direction while limiting the coverage area to only where pedestrians are present, rather than spreading energy thin across all potential areas.
Data Source
AI summary
Disclosed are a vehicle and a control method thereof, and more particularly, a technique for imaging a pedestrian near a vehicle, acquiring location information of the pedestrian in real time, and outputting warning sounds in a direction in which the pedestrian is located on the basis of the acquired location information of the pedestrian. The vehicle includes an imaging device configured to capture an image of a pedestrian and acquire location information of the pedestrian, a controller configured to generate a control signal for outputting warning sounds in a direction in which the pedestrian is located based on the acquired location information of the pedestrian when the pedestrian is located within a predetermined distance from the vehicle, and a speaker array configured to output the warning sounds in the direction in which the pedestrian is located based on the generated control signal.