Vehicle Turning Path Guidance for Obstacle-Aware Tight Turns
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Solution Overview
Problem
Articulated and long, single section vehicles face difficulties in navigating turns due to the need to consider swept path width and geometry, leading to potential lane deviations, traffic congestion, and risk of collisions or damage.
Innovation Solution
A turning path guidance system that uses sensors to detect objects and determine lane and turning angle data, generating a map to display a safe and efficient turning path on a vehicle's display screen, allowing drivers to navigate turns while avoiding obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers manually navigate turns in articulated vehicles and long vehicles, then the vehicle can complete the turn, but the driver must carefully consider swept path width and geometry to avoid lane deviations, collisions, and traffic congestion
Solution Approach 1:
The patent introduces a turning path guidance system that acts as an intermediary between the driver and the complex turning maneuver. The system includes sensors to detect objects, a controller to calculate the optimal turning path considering vehicle geometry and swept path width, and a display to visualize the guidance path. This intermediary system handles the complex geometric calculations and path planning, making the turning operation easier and safer for the driver.
Solution Approach 2:
The patent replaces the manual mechanical judgment and spatial reasoning required by drivers with an automated electronic system. The controller uses sensor data and vehicle parameters to computationally determine the optimal turning path, substituting the driver's mental calculation and spatial awareness with an electronic calculation system that precisely accounts for swept path width and vehicle geometry.
2Reliability
If drivers take turns slowly to navigate safely, then collision risk is reduced, but traffic congestion increases
Solution Approach 1:
The system performs preliminary calculation of the optimal turning path before the vehicle enters the turn. By pre-calculating the guidance path that optimally balances safety and efficiency, the system enables drivers to execute turns at appropriate speeds without unnecessary caution, thereby maintaining traffic flow while avoiding collisions.
Solution Approach 2:
The system provides real-time visual feedback to the driver through the display, showing the calculated turning path and actual vehicle position. This feedback enables the driver to confidently follow the optimized path at appropriate speeds, improving both safety and efficiency by eliminating the need for overly cautious slow turning.
3Speed
If the swept path width is increased to accommodate vehicle geometry, then the vehicle can turn more sharply, but the vehicle may move into adjacent lanes or collide with objects
Solution Approach 1:
The system dynamically calculates the optimal turning path based on real-time sensor data and vehicle parameters. The guidance path adapts to the specific turn geometry, vehicle swept path width, and detected objects, allowing the vehicle to turn sharply when safe and adjust the path when obstacles are present, thereby achieving high turning speed while avoiding lane deviations and collisions.
4Reliability
If a turning path guidance system is implemented, then turning safety and efficiency are improved, but the device complexity increases
Solution Approach 1:
The turning path guidance system utilizes existing vehicle components with multiple functions: sensors already present on the vehicle are used for both general obstacle detection and specific turning path calculation; the display system serves both general information display and turning guidance visualization. This multi-functionality reduces the need for entirely new components, thereby limiting the increase in device complexity.
Data Source
AI summary
A method of providing turning path guidance for a vehicle includes determining parameters of a turn region of a roadway using a controller of the turning path guidance system. The parameters include lane data and turning angle data. Positions of objects in and around the turn region of the roadway are detected using a sensor system of the vehicle. A map of the turn region is generated based on the lane data, turning angle data and that shows the detected objects using the controller. A turning path for the vehicle for navigating the turn in the turn region that avoids the detected objects is determined using the controller. The map with the turning path is displayed on a display screen in the vehicle.