Vehicle Reverse Path Tracking With Stored Trajectory Assist
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Solution Overview
Problem
Drivers face difficulties in reversing vehicles due to the need to manipulate the steering wheel while checking rearview mirrors and rearview cameras, and the different trajectories between forward and backward driving, which requires skill and attention to avoid obstacles.
Innovation Solution
A method and apparatus for backward driving assist that includes sensors for real-time location determination, object detection, and control units for speed and steering, allowing for precise path tracking and curvature adjustment, with the ability to store forward driving trajectories for backward driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver manually checks mirrors and cameras while steering during reverse driving, then the driver can monitor the reverse path and obstacles, but the driving operation becomes complex and requires high skill and attention
Solution Approach 1:
The system enables self-service by allowing the vehicle to autonomously determine its location, generate reverse paths, and control steering and speed without requiring manual monitoring and adjustment by the driver. The control unit automatically executes reverse driving based on stored forward trajectory data, freeing the driver from complex manual operations while maintaining safety through automated obstacle avoidance and path tracking.
Solution Approach 2:
The system applies preliminary action by storing the forward driving trajectory data (including steering angle and speed information) before reverse driving is initiated. This pre-stored data is then used by the control unit to automatically generate the appropriate reverse path and control commands, eliminating the need for the driver to manually plan and execute reverse maneuvers while ensuring safe operation.
2Reliability
If the driver needs to judge distance to obstacles and avoid contact during reverse driving, then collision avoidance is achieved, but the driver requires special skill and continuous attention
Solution Approach 1:
The system replaces the mechanical system of manual distance judgment and steering control with an automated electronic control system. The control unit uses stored trajectory data and sensor information to automatically calculate reverse paths and control vehicle movement, substituting the driver's manual skill-based operations with algorithmic processing that objectively measures distance to obstacles and executes precise control commands.
Solution Approach 2:
The system implements feedback by continuously monitoring the vehicle's position during reverse driving and comparing it against the generated reverse path. The control unit adjusts steering angle and speed in real-time based on this feedback to maintain accurate path tracking and ensure safe distance from obstacles, eliminating the need for the driver to continuously assess and adjust maneuvers.
3Measurement precision
If the system uses multiple location estimation technologies for backward driving assist, then location determination accuracy is improved, but the device complexity increases
Solution Approach 1:
The system merges multiple location estimation technologies (such as GPS, inertial sensors, and visual odometry) into a unified location determination system. The control unit integrates data from these different sensors to calculate the vehicle's position during reverse driving, combining their respective strengths to achieve high accuracy while managing complexity through centralized processing and data fusion algorithms.
Data Source
AI summary
A method and apparatus for backward driving assist of a vehicle, the method comprises: obtaining first coordinate information for the real-time location of the vehicle; detecting an object around the vehicle, and obtaining second coordinate information for the real-time location of the vehicle; determining a location of the vehicle based on the first and second coordinate information; and performing backward driving assist control based on the determined location of the vehicle.