Automated Vehicle Traffic Circle Test System
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Solution Overview
Problem
There is a lack of a comprehensive and scientifically valid method for testing an automated vehicle's ability to pass a traffic circle without traffic lights, as existing simulation-based tests fail to accurately reproduce real-world scenarios, limiting their practical application and reliability.
Innovation Solution
A system comprising an automated vehicle equipped with an attitude sensor and a 360-degree panoramic camera, connected to a control center via wireless communication, which evaluates the vehicle's ability to navigate a traffic circle by comparing its tilt angle, driving trajectory, and turn signals against predetermined criteria, ensuring safe and efficient passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simulation-based testing methods are used, then test cost and complexity are reduced, but test accuracy and reliability deteriorate due to inability to accurately reproduce real-world scenarios
Solution Approach 1:
The patent creates a physical copy of a real traffic circle environment with standardized geometry and traffic conditions, allowing automated vehicle testing to occur in a controlled setting that accurately replicates real-world scenarios. This resolves the contradiction by providing a tangible test environment that maintains both simplicity and high fidelity to actual driving conditions.
2Measurement precision
If real road environment testing is conducted, then test accuracy and authenticity are improved, but test cost and operational complexity increase
Solution Approach 1:
The patent standardizes key parameters of the traffic circle environment (radius, lane width, exit angles, speed limits) to create controlled test conditions. This allows for precise measurement and comparison of automated vehicle performance while simplifying operational complexity through consistent, repeatable test scenarios.
3Adaptability or versatility
If multiple test scenarios are reproduced, then test comprehensiveness is improved, but scene reproduction difficulty and time consumption increase
Solution Approach 1:
The standardized traffic circle test field is designed to accommodate multiple test scenarios (different entry/exit combinations, varying traffic conditions, different speed regimes) within a single physical infrastructure. This multi-functional design allows comprehensive testing without requiring separate setups for each scenario, thus reducing time consumption while maintaining versatility.
Data Source
AI summary
Provided are a system and a method for testing an ability of an automated vehicle to pass a traffic circle without traffic lights. The system includes an automated vehicle, a traffic circle, a control center, an attitude sensor and a panorama camera. In the method, the control center receives a test request and then sends a driving command to drive the automated vehicle to enter the traffic circle to start the test. The attitude sensor obtains a tilt angle and sends it to the control center in real time. The panorama camera is configured to obtain a driving trajectory, a driving speed and a state of turn signals of the automated vehicle. The obtained information is compared to a standard by the control center to evaluate the ability of the automated vehicle to pass the traffic circle without traffic lights.