Level Crossing Message-Based Control for Autonomous Vehicles
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Solution Overview
Problem
Current systems for semi-autonomous or autonomous vehicles fail to provide comprehensive information about the signaling and protecting systems at level crossings, limiting their ability to safely navigate these areas.
Innovation Solution
An embedded system in the vehicle receives wireless messages from infrastructure detailing the signaling and protecting system components, allowing it to control vehicle movement based on this information, including category, structural components, and geometric data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle uses basic sensor detection only, then the system complexity is low, but the safety and reliability of navigating level crossings is insufficient
Solution Approach 1:
The patent combines multiple information sources (wireless messages from infrastructure, sensor detection data, map information) into a unified perception system. The embedded system integrates data from receiving modules that capture wireless communications with level crossing infrastructure, merging this with traditional sensor inputs to create a comprehensive view of the level crossing environment, thereby improving reliability without requiring completely separate systems
Solution Approach 2:
The system performs preliminary detection and analysis of level crossing characteristics before the vehicle reaches the crossing. By receiving wireless messages in advance that contain information about signaling systems, protecting systems, and geometric data, the embedded system can prepare appropriate navigation decisions beforehand, improving safety response time while maintaining manageable system complexity through proactive rather than reactive processing
2Measurement precision
If the vehicle receives detailed wireless messages about signaling and protecting systems, then the measurement precision of level crossing characteristics improves, but the quantity of information to process increases
Solution Approach 1:
The embedded system extracts only the relevant characteristics from the detailed wireless messages received from infrastructure. Rather than processing all available information, the system identifies and extracts key parameters such as signaling system type, protecting system configuration, and geometric data specific to the level crossing, thereby achieving precise measurement of essential characteristics while filtering out unnecessary information to manage processing loads
Solution Approach 2:
The system applies different processing levels to different types of information based on their relevance. Critical safety-related characteristics (signaling system status, protecting system configuration) receive high-priority detailed processing, while less critical geometric data receives standardized processing. This local differentiation of processing quality allows precise measurement where needed while reducing overall information processing quantity
3Extent of automation
If the system makes automatic control decisions based on extracted information, then the extent of automation improves, but the difficulty of detecting and measuring environmental characteristics increases
Solution Approach 1:
The wireless communication infrastructure acts as an intermediary that provides structured, pre-processed information about level crossing characteristics. Rather than requiring the vehicle's sensors to detect and interpret complex signaling and protecting systems directly, the infrastructure transmits standardized messages containing interpreted characteristics, thereby enabling automatic control decisions while reducing the detection and measurement burden on the vehicle system
Data Source
AI summary
An embedded system for controlling movement for an autonomous or semi-autonomous motorized road vehicle and to a fixed piece of infrastructure located in a level-crossing zone crossing a road, the embedded system and infrastructure interacting by means of at least one message transmitted by the infrastructure via wireless communication and received by the embedded system. The at least one message contains one or more pieces of information relating to a signaling and/or protecting system installed in said level-crossing zone and/or relating to one or more structural components of said signaling and/or protecting system. The embedded system is configured to decide on how to handle the movement control of the vehicle based on said one or more pieces of information extracted from said at least one received message.