Directional Pedestrian Warning Speaker Array
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Solution Overview
Problem
Existing vehicle safety systems fail to promptly and accurately alert pedestrians of approaching vehicles, especially in environments with high population density and among electric vehicles that produce little noise, leading to potential accidents.
Innovation Solution
A vehicle system that includes an imaging device, detection sensor, and speaker array to capture pedestrian location information, predict their movement route, and output directional warning sounds based on real-time data, ensuring alerts are directed towards the pedestrian's path and intensity adjusted according to distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If warning sounds are output in all directions to ensure pedestrian awareness, then pedestrian safety is improved, but unnecessary noise is generated in areas without pedestrians
Solution Approach 1:
The system outputs warning sounds selectively in specific directions where pedestrians are detected, rather than uniformly in all directions. The speaker array directs acoustic energy locally toward identified pedestrian locations, improving safety for actual pedestrians while avoiding unnecessary noise in areas without pedestrians.
Solution Approach 2:
The system continuously detects pedestrian locations using sensors and imaging devices, then adjusts the direction and intensity of warning sounds based on real-time feedback about pedestrian positions. This closed-loop control ensures warning sounds are directed only where needed, balancing safety effectiveness with noise reduction.
2Reliability
If warning sounds are output early to prevent accidents, then pedestrian safety is improved, but false alarms may occur without accurate movement prediction
Solution Approach 1:
The system predicts future pedestrian positions based on current movement data and outputs warning sounds in advance of the predicted collision point. By calculating movement routes and projecting future locations, the system triggers warnings early enough to prevent accidents while maintaining spatial accuracy through predictive modeling.
Solution Approach 2:
The system replaces direct mechanical collision detection with computational prediction of movement routes. Using sensor data and algorithms to model pedestrian trajectories, the system substitutes physical contact-based safety mechanisms with intelligent prediction, enabling early warnings without false alarms.
3Device complexity
If driver-triggered warning sounds are used to alert pedestrians, then system simplicity is maintained, but response time is delayed and effectiveness is reduced
Solution Approach 1:
The system automatically detects pedestrians and outputs warning sounds without requiring driver intervention. The vehicle's sensors and controller directly trigger the speaker array when pedestrians are detected, making the safety system self-activating and eliminating the time delay associated with driver recognition and manual warning activation.
Solution Approach 2:
The system accelerates the warning response by using powerful sensor detection and automated control systems that react immediately to pedestrian presence. This replaces the slow human perception and decision-making process with rapid electronic detection and actuation, dramatically reducing response time while maintaining system simplicity.
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 pedestrian awareness of approaching vehicles, reduces unnecessary noise by targeting alerts only where pedestrians are, and anticipates potential collisions by predicting movement routes, thereby preventing accidents.
Implementation Method 1
The detection sensor may include at least one of a radar device and a LiDAR device
Implementation Method 2
The detection sensor may include at least one of a radar device and a LiDAR device
Implementation Method 3
a speaker array configured to output the warning sounds in the direction toward where the pedestrian is moving based on the generated control signal
Data Source
AI summary
Disclosed are a vehicle and a control method thereof, and more particularly, a technique for acquiring location information of a pedestrian near a vehicle, predicting a movement path of the pedestrian, and outputting warning sounds in a direction toward where the pedestrian is moving. The vehicle includes an imaging device configured to capture an image of a pedestrian near the vehicle, a detection sensor configured to acquire location information of the pedestrian, a controller configured to predict a movement route of the pedestrian based on the acquired location information of the pedestrian and generate a control signal for outputting warning sounds in a direction toward where the pedestrian is moving based on the predicted movement route of the pedestrian; and a speaker array configured to output the warning sounds in the direction toward where the pedestrian is moving based on the generated control signal.