Connected Reference Markers for All-Weather Vehicle Positioning
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Solution Overview
Problem
Existing intelligent roadside systems for automated driving are costly and difficult to deploy, and they do not effectively provide vehicle location information under extreme weather conditions or for all types of roadways.
Innovation Solution
A Connected Reference Marker (CRM) System that uses a network of connected reference markers, communication modules, and a Central Operations Unit to provide real-time vehicle position information, even under extreme weather conditions and on all types of roadways, without the need for high-definition maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing intelligent roadside systems are deployed, then automated driving support is provided, but deployment cost and system complexity increase significantly
Solution Approach 1:
The system segments the intelligent roadside infrastructure into simple, modular reference markers distributed along the roadway. Each marker is an independent, low-cost unit that provides localized position reference, eliminating the need for complex centralized infrastructure while maintaining automated driving support functionality.
Solution Approach 2:
The reference markers are designed as inexpensive, simple units that can be easily deployed and replaced. Rather than investing in expensive, complex intelligent roadside systems, the patent uses multiple low-cost markers that provide sufficient functionality for vehicle positioning and navigation.
2Measurement precision
If existing intelligent roadside systems are used, then vehicle location information is provided, but effectiveness under extreme weather conditions deteriorates
Solution Approach 1:
The reference markers are designed to function universally across all weather conditions and roadway types. The markers use passive reflective or active illumination techniques that remain effective in rain, snow, fog, and darkness, providing consistent vehicle position information regardless of environmental conditions.
Solution Approach 2:
The reference markers serve as intermediary reference objects between the vehicle's sensing system and the roadway environment. By providing stable, identifiable visual or electromagnetic references that are unaffected by weather conditions, the markers enable continuous accurate positioning even when direct environmental sensing is compromised.
3Measurement precision
If connected reference markers are deployed, then real-time vehicle position identification is achieved, but infrastructure deployment cost decreases
Solution Approach 1:
The positioning infrastructure is divided into numerous simple, standardized reference marker segments rather than requiring complex continuous infrastructure. This segmentation allows for modular deployment at reduced cost while maintaining precise position identification capabilities through triangulation or trilateration algorithms.
Solution Approach 2:
The system replaces complex mechanical or electronic intelligent roadside infrastructure with simpler optical or electromagnetic reference markers. These markers can be passive reflective elements or low-power active illuminators, eliminating the need for expensive powered sensors, processors, and communication systems at each roadside location.
Data Source
AI summary
Provided herein is technology relating to automated driving and particularly, but not exclusively, to a connected reference marker technology configured to serve automated driving systems by providing, supplementing, and/or enhancing autonomous driving functions for connected automated vehicles under normal and abnormal driving scenarios.