Roadside Pedestrian Detection for Timed Dual-Channel Alerts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing roadside alert systems for pedestrians do not effectively reduce stress and improve convenience in traffic safety, as they often provide unnecessary alerts or fail to account for pedestrian movements.
Innovation Solution
A roadside apparatus equipped with an imager to capture pedestrian images, a communication interface to transmit approach information to vehicles, and an output interface to alert pedestrians, coordinated with a server apparatus to optimize alert timing and reduce unnecessary stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the roadside apparatus alerts pedestrians continuously or in advance, then traffic safety is improved, but pedestrian stress increases
Solution Approach 1:
The system performs preliminary detection of pedestrian approach and vehicle presence, then transmits this information to both the vehicle and pedestrian alert device in advance. This allows the pedestrian alert to be activated only when necessary, based on the pre-determined condition that both a pedestrian is approaching and a vehicle is present, thereby improving safety while avoiding unnecessary stress from continuous or premature alerts.
Solution Approach 2:
The system uses feedback from the imager to continuously monitor pedestrian movement and from the vehicle detection system to determine when a vehicle is present. This feedback mechanism allows the alert to be activated dynamically based on real-time conditions, ensuring alerts are provided only when both a pedestrian is approaching the roadway and a vehicle is detected, thus improving safety while reducing unnecessary stress.
2Reliability
If the roadside apparatus provides information to both pedestrians and vehicles, then traffic safety is improved, but system complexity increases
Solution Approach 1:
The system segments the information provision function into two separate channels: one for vehicles (transmitting pedestrian approach information to enable voluntary yielding) and one for pedestrians (transmitting vehicle presence information for alert). This segmentation allows each channel to be optimized independently and simplifies the overall system architecture while maintaining comprehensive safety coverage.
Solution Approach 2:
The roadside apparatus acts as an intermediary that detects conditions and then transmits appropriate information to both vehicles and pedestrians based on those conditions. This intermediary role simplifies the system by centralizing the detection and decision-making function in the roadside apparatus, rather than requiring direct communication or complex coordination between vehicles and pedestrians.
Data Source
AI summary
A roadside apparatus includes a communication interface configured to transmit and receive information, an imager configured to capture images of a pedestrian, an output interface configured to output information for the pedestrian, and a controller configured to transmit, to a vehicle, first information indicating an approach of the pedestrian to a roadway based on the captured images, and thereafter output second information to alert the pedestrian for the vehicle.