Valet Parking Route Control with Pre-Drive Position Accuracy Checks
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Solution Overview
Problem
Automated valet parking systems face challenges in maintaining positional accuracy of vehicles due to aging, accidents, and environmental factors, leading to potential deviations from designated travel routes during automatic driving.
Innovation Solution
A control device equipped with a travel route determining unit, a travel route transmission unit, and a positional accuracy calculation unit that calculates dynamic estimation accuracy before automated driving, ensuring accurate vehicle positioning through a combination of in-vehicle sensors and infrastructure measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated driving is performed without pre-travel route accuracy assessment, then system complexity is reduced, but positional accuracy and reliability deteriorate
Solution Approach 1:
The system performs preliminary assessment of travel route accuracy by acquiring positions from multiple sources (vehicle sensors, infrastructure sensors) before automated driving begins, and calculates accuracy metrics in advance to determine if the route is safe for automated traversal
Solution Approach 2:
The system calculates dynamic estimation accuracy and compares it against threshold values to establish safety margins before automated driving commences, preventing operation when positional accuracy is insufficient
2Measurement precision
If multiple position acquisition methods are used to improve accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The system combines multiple position acquisition approaches including vehicle-estimated positions from in-vehicle sensors and infrastructure-measured positions from parking lot sensors to calculate comprehensive accuracy metrics
Solution Approach 2:
The system calculates dynamic estimation accuracy by comparing vehicle-estimated positions with infrastructure-measured positions, using this feedback to assess whether the travel route meets safety thresholds for automated driving
Data Source
AI summary
A control device for automated valet parking lot includes: a travel route determining unit configured to determine a travel route to a parking space; a travel route transmission unit configured to transmit the travel route to a vehicle; a position acquiring unit configured to acquire, from the vehicle, a position of the vehicle that is estimated by the vehicle while traveling; and a positional accuracy calculation unit configured to calculate a dynamic estimation accuracy, which is an accuracy of the position of the vehicle acquired by the position acquiring unit from the vehicle while the vehicle is travelling, prior to performing automated driving of the vehicle in accordance with the travel route.