Wireless Vehicle Speed Enforcement via Base Station Data Collection
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Solution Overview
Problem
Conventional speed enforcement methods are ineffective outside detection zones, leading to increased accident risks and high installation and maintenance costs, as they only enforce speed limits within specific detection areas, causing drivers to exceed speeds in non-detection zones.
Innovation Solution
A vehicle speed enforcement method using wireless communication to collect and analyze vehicle data in real-time, including the use of base stations and auxiliary stations in detection and non-detection zones, enabling speed measurement and warnings outside traditional detection areas through multi-hop technology and image capture when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional speed enforcement methods (loop detector, camera detector, radar detector) are used only in specific detection zones, then speed measurement accuracy is improved, but the effectiveness of speed enforcement deteriorates because drivers maintain legal speed only within detection zones and exceed limits in non-detection zones
Solution Approach 1:
The patent segments the road into multiple detection zones with base stations positioned at intervals. Instead of having a single detection zone, multiple zones are created along the road, each capable of independently detecting and enforcing speed limits. This segmentation allows continuous enforcement coverage while maintaining measurement precision in each zone.
Solution Approach 2:
The patent implements preliminary action by detecting and warning drivers of overspeed conditions before they enter the formal detection zone. The system identifies potential overspeed vehicles in advance and provides warnings, allowing drivers to correct their speed before reaching the enforcement zone, thereby preventing accidents and improving enforcement effectiveness.
2Measurement precision
If loop detectors are installed for speed enforcement, then speed measurement capability is improved, but installation cost and maintenance cost deteriorate due to high device expenses
Solution Approach 1:
The patent replaces the mechanical loop detector system with a wireless communication-based speed measurement system. Instead of using physical loop coils buried in the road surface, the system uses wireless base stations that communicate with vehicles to obtain speed information, thereby eliminating the need for expensive mechanical installation and maintenance of loop detectors.
Solution Approach 2:
The patent introduces an intermediary communication system between the enforcement authority and the vehicle. Instead of directly measuring speed through mechanical loop detectors, the system uses wireless communication as an intermediary to transfer speed information from the vehicle to the base station, reducing installation and maintenance costs while maintaining measurement capability.
3Device complexity
If speed enforcement is limited to specific detection zones, then device complexity is reduced, but the safety of drivers deteriorates due to sudden speed reduction in non-detection zones creating accident danger
Solution Approach 1:
The patent performs preliminary action by detecting overspeed conditions and providing warnings before vehicles enter the formal detection zone. This advance warning system allows drivers to gradually reduce speed in a controlled manner rather than suddenly braking in non-detection zones, thereby eliminating the accident danger while maintaining relatively simple device architecture.
Data Source
AI summary
A vehicle speed enforcement method includes the steps of receiving and collecting, by a base station located in a detection zone, information about a target vehicle from a communication unit in the target vehicle, detecting a speed of the target vehicle through the collected information about the target vehicle, and setting the target vehicle as an overspeed vehicle when the speed of the target vehicle is faster than a reference limit speed at a point in time at which the target vehicle has entered the detection zone.