Optical Fiber Road Monitoring for Dangerous Vehicle Groups
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Solution Overview
Problem
Current road monitoring systems cannot detect dangerous vehicle groups traveling at high speeds with short inter-vehicle distances, which may lead to traffic accidents, and only alert for accidents after they occur.
Innovation Solution
An optical fiber sensing system that includes an optical fiber laid along a road, a sensing unit to detect vibrations, a vibration data calculation unit, a traveling state detection unit to measure vehicle speed and inter-vehicle distance, a vehicle group detection unit to identify dangerous vehicle groups, and a broadcasting unit to alert authorities when such groups are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an impact sensor is fixed to a guardrail to detect traffic accidents, then accident detection capability is provided, but the system cannot detect dangerous vehicle groups traveling at high speed with short inter-vehicle distances
Solution Approach 1:
The patent replaces the mechanical impact sensor with an optical fiber-based sensing system that uses light propagation principles to detect vehicle vibrations and movements. This substitution enables the system to detect dangerous vehicle groups through vibration analysis of the optical fiber, providing both accident detection and proactive monitoring of hazardous driving conditions.
Solution Approach 2:
The system performs preliminary detection of dangerous vehicle groups before accidents occur by continuously monitoring vibration data from the optical fiber. The traveling state detection unit analyzes vehicle speed and inter-vehicle distance in advance, allowing emergency services to be dispatched proactively to prevent accidents rather than reacting after impacts occur.
2Productivity
If traditional impact sensors are used, then simple accident detection is achieved, but real-time monitoring of vehicle speed and inter-vehicle distance is not possible
Solution Approach 1:
The optical fiber sensing system performs multiple functions simultaneously: it detects vehicle vibrations, measures vehicle speed, calculates inter-vehicle distance, and identifies dangerous vehicle groups. This multi-functionality is achieved through a single optical fiber infrastructure with centralized data processing, improving monitoring efficiency without proportionally increasing system complexity.
Solution Approach 2:
The optical fiber acts as an intermediary medium that transmits vibration and movement information from the road environment to the sensing unit. This intermediary enables the system to indirectly measure vehicle speed and inter-vehicle distance through vibration analysis, avoiding the need for direct installation of multiple specialized sensors on vehicles.
3Reliability
If only post-accident detection is implemented, then system simplicity is maintained, but proactive safety measures cannot be taken
Solution Approach 1:
The system performs preliminary detection of dangerous vehicle groups before accidents occur by continuously monitoring vibration data. The traveling state detection unit analyzes vehicle speed and inter-vehicle distance in real-time, allowing the system to identify hazardous conditions advance and enable proactive dispatch of emergency services, eliminating the time loss associated with post-accident detection.
Solution Approach 2:
The system establishes a continuous feedback loop where vibration data from the optical fiber is constantly analyzed to detect changes in vehicle behavior. When dangerous vehicle groups are identified through real-time analysis of speed and inter-vehicle distance, the system immediately triggers alerts and dispatches emergency services, creating a responsive feedback mechanism that ensures safety assurance through timely intervention.
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
Enables the detection and alerting of dangerous vehicle groups in real-time, allowing for proactive measures to prevent traffic accidents by identifying vehicles traveling above a speed threshold with inter-vehicle distances below a certain threshold.
Implementation Method 1
an optical fiber laid along a road; a sensing unit configured to receive an optical signal from the optical fiber and detect vibration generated by a vehicle traveling on the road based on the optical signal
Data Source
AI summary
A system includes: an optical fiber laid along a road; a sensing unit configured to receive an optical signal from the optical fiber and detect vibration generated by a vehicle traveling on the road based on the optical signal; a calculation unit configured to calculate vibration data indicating the vibration; a traveling state detection unit configured to detect, for each vehicle traveling on the road, a vehicle speed of the vehicle and an inter-vehicle distance based on the vibration data; a vehicle group detection unit configured to detect, as a dangerous vehicle group, a vehicle group of which the vehicle speed is equal to or higher than a speed threshold and of which an inter-vehicle distance is equal to or shorter than a distance threshold; and a broadcasting unit configured to broadcast the detection of the dangerous vehicle group to a predetermined broadcasting destination.