Autonomous Reversing Trajectory Control for Obstacle Avoidance
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Solution Overview
Problem
The existing reversing systems in vehicles require drivers to manually operate the vehicle while observing obstacles, which is inconvenient and poses safety hazards due to blocked sight lines and the need to attend to multiple information sources.
Innovation Solution
A reversing control method and system that acquires a first reversing trajectory upon instruction, adjusts it based on environmental obstacle information, and controls the vehicle to follow optimized trajectories to avoid obstacles, reducing the need for manual driver operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver manually operates the vehicle while observing obstacles during reversing, then the driver can control the vehicle position, but the sight line is blocked and safety hazards increase
Solution Approach 1:
The system enables the vehicle to reverse autonomously by using sensors to detect obstacles and automatically adjust the reversing trajectory without driver intervention. The vehicle serves itself by making its own navigation decisions during reversing operations.
Solution Approach 2:
The patent replaces the mechanical system of manual driver control with an automated sensing and control system. Sensors detect obstacles and the control system processes this information to automatically adjust steering and braking, substituting mechanical driver actions with electronic control systems.
2Loss of information
If the driver pays attention to multiple information sources (head unit, steering wheel, front view) during reversing, then the driver can gather comprehensive information, but the operation becomes inconvenient and safety hazards increase
Solution Approach 1:
The system automatically collects and processes environmental information using onboard sensors, eliminating the need for the driver to manually check multiple information sources. The vehicle independently gathers data about obstacles and trajectory deviations.
Solution Approach 2:
The system continuously monitors the reversing process using sensors and provides real-time feedback to automatically adjust the trajectory. This closed-loop feedback mechanism ensures comprehensive information gathering without requiring driver attention to multiple displays or controls.
3Reliability
If a reversing radar is used to detect obstacle distance and provide warnings, then the driver receives safety information, but it is difficult to understand the actual distribution of obstacles
Solution Approach 1:
The system transitions from one-dimensional distance measurement by radar to multi-dimensional spatial mapping using multiple sensors. By combining data from ultrasonic sensors, cameras, and radar, the system creates a comprehensive three-dimensional understanding of obstacle distribution in the environment.
Solution Approach 2:
The patent merges multiple detection systems (radar, ultrasonic sensors, cameras) into a unified sensing network. This combination allows the system to detect not only distance but also the spatial distribution and positioning of multiple obstacles simultaneously.
4Reliability
If the driver manually controls the vehicle during reversing, then the driver can respond to obstacles, but the reversing process is time-consuming and inefficient
Solution Approach 1:
The system enables autonomous obstacle response by automatically detecting obstacles and adjusting the reversing trajectory without driver intervention. The vehicle independently makes real-time decisions to avoid obstacles, eliminating the time delay associated with manual driver reaction.
Solution Approach 2:
The system maintains continuous monitoring and adjustment during the entire reversing process, rather than requiring intermittent driver attention. Sensors continuously track obstacles and the control system continuously adjusts the trajectory, ensuring uninterrupted safe operation.
Data Source
AI summary
A reversing control method and system and a vehicle, which relate to the technical field of vehicles. In the method, after receiving a reversing instruction for a vehicle, a first reversing trajectory of the vehicle can be acquired; the vehicle can be controlled to reverse according to the first reversing trajectory, such that a driver does not need to control the vehicle, thus avoiding tedious operation by the driver; during a reversing process the first reversing trajectory can be adjusted according to first environmental obstacle information of the vehicle, to acquire a second reversing trajectory; and the vehicle is then controlled to reverse according to the second reversing trajectory. Thus, the danger caused by environmental obstacles during a reversing process may be avoided, and potential safety hazards in process of reversing a vehicle are eliminated.