Projected Driving Trajectory for Self-Reversing Vehicle Maneuvers
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Solution Overview
Problem
Current advanced driver-assistance systems (ADASs) face challenges in predicting and communicating driving trajectories to following vehicles and pedestrians, particularly when performing self-reversing maneuvers, due to limitations in traffic regulations and existing technology.
Innovation Solution
An in-vehicle device equipped with a projection module, camera module, communication module, processing module, and storage module that projects a suggested driving trajectory on the ground, calculates driving speeds and distances of adjacent vehicles, and adjusts the projected trajectory based on turn signal information and historical driving data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the FSD function calculates and executes self-driving trajectories autonomously, then the vehicle can perform self-turning, self-accelerating, self-braking, and self-reversing functions, but other vehicles and pedestrians cannot predict the actual driving trajectory, creating safety hazards
Solution Approach 1:
The patent introduces a communication module as an intermediary that transmits calculated driving trajectory information from the autonomous vehicle to other vehicles and pedestrians. This mediator bridges the information gap created by automation, allowing external parties to know the vehicle's intended path without compromising the autonomous driving capability
Solution Approach 2:
The system implements feedback by continuously monitoring surrounding vehicles and pedestrians through camera modules, then adjusting the driving trajectory communication based on their positions and movements. This ensures that trajectory information is provided dynamically in response to the changing environment, maintaining both automation and safety
2Ease of operation
If the FSD function performs self-reversing maneuvers autonomously, then the vehicle can reverse without driver intervention, but pedestrians behind the vehicle cannot predict the actual reverse track, creating safety hazards
Solution Approach 1:
The system performs preliminary action by projecting the suggested driving trajectory on the ground before the vehicle actually executes the reversing maneuver. This advance visualization allows pedestrians to anticipate the vehicle's movement path and take appropriate safety measures, while the autonomous reversing function remains intact
3Reliability
If the vehicle projects a suggested driving trajectory on the ground, then other vehicles and pedestrians can predict the driving path, but the system requires additional hardware components and processing complexity
Solution Approach 1:
The patent applies multi-functionality by using existing ADAS components (camera modules, processing modules, communication modules) for multiple purposes: not only for autonomous driving but also for trajectory calculation and projection. This reduces the need for entirely new hardware while achieving reliable trajectory prediction
Solution Approach 2:
The system creates a visual copy of the driving trajectory by projecting it onto the ground surface using light projection technology. This optical copy provides accurate trajectory information to external observers without requiring complex mechanical or electronic interfaces, simplifying the interaction between the autonomous vehicle and its environment
Data Source
AI summary
An in-vehicle device and a driving trajectory projection method are related to the in-vehicle device adapted to be disposed on a first vehicle. The in-vehicle device includes one or more projection modules, one or more camera modules, a communication module, a processing module, and a storage module. The projection module is configured to project a suggestion driving trajectory. The camera module is configured to capture a driving frame upon the first vehicle drives in a first lane. The driving frame includes an image of a second vehicle, and the second vehicle drives behind the first vehicle. The communication module is configured to receive a turn signal information of the first vehicle and a first driving speed of the first vehicle. The turn signal information is selected from a left-turn instruction, a right-turn instruction, or a straight-driving instruction.