Auxiliary Road Space Detection for Obstructed Sidewalk Sections
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Solution Overview
Problem
Existing driver assistance systems fail to detect spaces on auxiliary roads, such as sidewalks, where the driver's visual field is obstructed by obstacles like street trees or external walls, leading to safety concerns.
Innovation Solution
A road management system that includes space detection means to identify spaces on auxiliary roads, interrupted section specification means to specify sections where the auxiliary road is obstructed, and reflection means to reflect these sections in a database, ensuring safety by providing information for road maintenance and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor installed in infrastructure is used to sense space for bypassing obstacles, then obstacle detection capability is improved, but detection coverage is reduced due to visual field obstruction by street trees or external walls
Solution Approach 1:
The patent introduces a mediator system consisting of multiple sensors distributed along the auxiliary road (sidewalk) to detect mobile bodies. These sensors act as intermediaries that capture information from areas obstructed by street trees or external walls, which the main infrastructure sensor cannot detect. The detection results from these intermediary sensors are then integrated to provide comprehensive detection coverage while maintaining high measurement precision.
2Device complexity
If the driver's visual field is obstructed by street trees or external walls, then the simplicity of the driving environment is improved, but safety is reduced due to inability to detect mobile bodies on auxiliary roads
Solution Approach 1:
The patent extends the detection system from the roadway dimension to the auxiliary road dimension by installing sensors along the sidewalk. This dimensional expansion allows the system to detect mobile bodies on auxiliary roads that are otherwise invisible to the driver due to obstructions. The system processes spatial information from this additional dimension to identify potential safety hazards and provide appropriate warnings to the driver.
3Quantity of substance
If infrastructure sensors are used to detect obstacles on roadway, then the cost of additional vehicle sensors is reduced, but detection accuracy in obstructed areas deteriorates
Solution Approach 1:
The patent segments the detection task by dividing the monitoring area into roadway and auxiliary road zones. Different sensor types and configurations are deployed in each zone according to their detection capabilities. The infrastructure sensor focuses on roadway obstacles while additional sensors along the auxiliary road specialize in detecting mobile bodies in obstructed areas. This segmentation allows each sensor to operate at optimal detection accuracy for its specific zone.
Data Source
AI summary
A road management system (10) includes: space detection means (11) for detecting a space on an auxiliary road where a mobile body other than a vehicle moves based on sensing information obtained by sensing the auxiliary road, the auxiliary road being provided on a side of a roadway where the vehicle travels; interrupted section specification means (12) for specifying a section of the auxiliary road in which a whole or part of the auxiliary road is interrupted based on the space on the auxiliary road detected by the space detection means (11); and reflection means (13) for reflecting the section of the auxiliary road in which a whole or part of the auxiliary road is interrupted specified by the interrupted section specification means (12) in a database.