Vehicle Positioning via Roadside Device Data Fusion
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Solution Overview
Problem
In scenarios with many occlusions or weak GPS signals, such as coastal ports, warehouses, and mining areas, existing vehicle positioning systems fail to accurately determine a vehicle's position.
Innovation Solution
A system and method where roadside devices store positioning information, which is acquired by a vehicle's information acquiring device, allowing the vehicle's processing device to determine its current position using both vehicle-mounted and roadside device data, even in areas with weak or no GPS signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS-based positioning is used, then positioning efficiency and accuracy are improved in open areas, but positioning reliability deteriorates in areas with occlusions or weak signals
Solution Approach 1:
The patent introduces roadside devices as intermediary elements that provide positioning information to vehicles. These devices act as mediators between the vehicle's positioning system and the external environment, allowing vehicles to obtain positioning data through roadside devices when GPS signals are unavailable, thus resolving the contradiction between positioning accuracy and reliability in occluded areas
Solution Approach 2:
The patent implements preliminary action by pre-deploying roadside devices with positioning information at locations where GPS signals may be weak or unavailable. This advance preparation ensures that when vehicles enter these areas, they can immediately access pre-positioned positioning data from roadside devices, maintaining positioning reliability without sacrificing accuracy
2Device complexity
If only vehicle-mounted positioning devices are used, then system complexity is reduced, but positioning capability deteriorates in areas with signal occlusions
Solution Approach 1:
The patent applies segmentation by dividing the positioning system into two independent components: vehicle-mounted positioning devices and roadside devices. This segmentation allows each component to perform its specific function - vehicle-mounted devices handle positioning in open areas while roadside devices provide positioning support in occluded areas, thereby improving overall positioning capability without significantly increasing system complexity
Solution Approach 2:
The patent implements universality by designing roadside devices with multi-functionality - they not only provide positioning information but also serve as communication nodes and reference points for the vehicle positioning system. This multi-functional design enhances positioning capability in various environments while keeping the overall system architecture relatively simple
Data Source
AI summary
The present disclosure provides a system, a method and an apparatus for vehicle positioning. The method includes: acquiring positioning information pre-stored in a roadside device while a vehicle is moving, the positioning information including direction information and/or position information associated with a position of the roadside device; determining a current position of the vehicle based on position information determined by a vehicle-mounted positioning device and the positioning information acquired from the roadside device.