Traffic Collision Warning Device Using Sensor Zone Segmentation
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Solution Overview
Problem
Existing traffic collision warning devices fail to accurately predict collisions at collision-prone areas, particularly where multiple vehicles enter and exit simultaneously, leading to unnecessary or late warnings due to incorrect sensor arrangements and lack of consideration for vehicle movement directions and velocities.
Innovation Solution
A traffic collision warning device using multiple sensors to identify vehicle directions, velocities, and positions, emitting warning signals when vehicles from opposite directions are likely to meet in a collision-prone area, with a pre-collision area detection system to ensure timely warnings and continuous signaling until all vehicles have cleared the area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two radar sensors are located near the bend to identify vehicles, then vehicle detection capability is improved, but false warning signals are generated when vehicles move out of collision-prone area
Solution Approach 1:
The road area is segmented into multiple zones: detection area (where sensors are located), collision-prone area (bend section), and safe area. By dividing the monitoring space into distinct segments with different warning states, the system avoids false warnings when vehicles leave the collision-prone area but remain in the detection area.
Solution Approach 2:
The system performs preliminary detection in the detection area before vehicles enter the collision-prone area. Warning signals are activated in advance when vehicles are detected in the detection area and not yet in the collision-prone area, allowing timely warning before potential collision occurs.
2Reliability
If sensors are positioned to detect vehicles at the bend, then collision risk detection is improved, but the system cannot handle multiple vehicles entering and leaving simultaneously
Solution Approach 1:
The system adds a temporal dimension to vehicle detection by tracking vehicles through multiple zones over time. Instead of only spatial detection at the bend, the system monitors vehicle movement through the detection area, collision-prone area, and safe area sequentially, enabling proper handling of multiple vehicles entering and leaving simultaneously.
Solution Approach 2:
The warning signal state is made dynamic based on real-time vehicle positions and movements. The system continuously updates warning status as vehicles enter, traverse, and leave the collision-prone area, adapting to changing traffic conditions and multiple vehicle scenarios rather than using static detection.
3Reliability
If warning signals are emitted when vehicles are close to each other, then collision prevention is improved, but the warning signal becomes too late or unnecessary
Solution Approach 1:
The system emits warning signals in advance when vehicles are detected in the detection area approaching the collision-prone area, rather than waiting until vehicles are already close together. This preliminary warning provides sufficient time for drivers to react and avoid collision before entering the dangerous zone.
Data Source
AI summary
The present invention relates to a traffic collision warning device comprising: a main circuit board (11); a central processing unit (12) being mounted on the main circuit board (11) and controlling the operation of the device; a memory (111); a warning signal generator (18); sensors (c1, c2, c3, c4, c1′, c2′, c3′, c4′) being arranged along the road near a collision-prone area; a vehicle identification module; timers (tm, tm′); vehicle counters (n, n′); and a movement direction comparison module. Wherein, the direction of movement of a vehicle is identified based on the order in which it passes through the sensors, the vehicle velocity is calculated by dividing the distance between the two sensors by the period of time it takes the vehicle to pass through the two sensors; the vehicle length is calculated by multiply the vehicle velocity and the period of time it takes the vehicle to pass through a sensor. When at least two vehicles moving from opposite directions are possibly to meet each other in the collision-prone area, the device emits collision warning signals at different levels depending on the velocities of the vehicles.