Vehicle Position Detection Using Light Beacon Correction
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Solution Overview
Problem
Conventional vehicle position detection systems using GPS signals have a position detection error of about 30 meters, necessitating a solution for improved accuracy.
Innovation Solution
A vehicle position detection system incorporating a GPS receiving device, a light beacon communication device, and a central processing unit that utilizes light beacon information for accurate position correction, including vehicle lane and position coordinates, to enhance positioning accuracy and facilitate inter-vehicle communication for approaching prediction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS signals are used for vehicle position detection, then the system can operate autonomously without infrastructure, but the position detection accuracy is limited to about 30 meters
Solution Approach 1:
The patent introduces light beacons as intermediary infrastructure elements installed at intersections to provide precise position references. These beacons act as mediators between the vehicle's GPS system and the actual road geometry, enabling accurate position detection by combining GPS data with beacon-based correction information transmitted via communication devices.
Solution Approach 2:
The patent replaces the purely satellite-based GPS positioning mechanism with a hybrid system that incorporates optical light beacons and electromagnetic communication. This substitution of the positioning mechanism using ground-based optical and communication infrastructure alongside GPS enables sub-30-meter accuracy by correcting GPS errors through beacon reference points.
2Measurement precision
If light beacon information is used for position correction, then position accuracy is improved, but the system complexity increases due to additional communication devices
Solution Approach 1:
The patent designs the light beacon system to serve multiple functions: providing position correction data, transmitting communication information between vehicles, and establishing reference points for navigation. The communication devices integrated into the system handle both positioning corrections and general vehicle communication, reducing the need for separate dedicated systems and thereby limiting the increase in overall system complexity.
Solution Approach 2:
The patent merges the position correction function with the existing vehicle communication infrastructure. The light beacon communication devices are integrated with the vehicle's existing GPS receiver and processing unit, combining multiple functions (positioning, correction, communication) into a unified system rather than adding completely separate independent systems.
3Measurement precision
If light beacons are installed at intersections, then position accuracy is enhanced, but the infrastructure cost and installation complexity increase
Solution Approach 1:
The patent applies light beacons selectively at specific locations (intersections) where they provide the most significant position correction benefit. Rather than requiring comprehensive coverage throughout the entire road network, the system places beacons strategically at key reference points where position accuracy is most needed, thereby reducing overall infrastructure installation complexity while maintaining high measurement precision where required.
Data Source
AI summary
A vehicle position detection system is provided to detect a vehicle position with higher accuracy. The vehicle position detection system includes a GPS receiving device mounted on the vehicle to receive GPS signals from a GPS satellite, a light beacon communication device mounted on the vehicle to receive light beacon information from a light beacon arranged in front of an intersection of a road, and a central processing unit mounted on the vehicle to correct a position of the vehicle based on the light beacon information upon reception of the light beacon information by the light beacon communication device.