Auto Parking Speed Planning for Stable Maneuvering Near Obstacles
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Solution Overview
Problem
Current auto parking technologies result in a vehicle movement state that differs significantly from manual parking, affecting parking experience and safety due to sharp speed fluctuations and potential collisions.
Innovation Solution
An intelligent driving device determines speed limits based on path remaining distance and obstacle distance to plan a parking speed that mimics manual driving, using a first speed limit for path distance and a second speed limit for obstacle proximity, adjusting speed limits at path points to stabilize the parking process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If auto parking technology is used to reduce driving pressure, then automation level is improved, but parking experience and safety deteriorate due to sharp speed fluctuations
Solution Approach 1:
The patent implements dynamic speed adjustment by continuously planning parking speeds at different path points based on real-time path remaining distance and obstacle distance. The speed limit is not fixed but dynamically adapted to the parking process stage, creating a dynamic speed curve that mimics manual driving behavior and resolves the contradiction between automation and parking experience/safety.
Solution Approach 2:
The patent changes the parameter of parking speed from a constant or simple control value to a dynamically planned value based on multiple factors including path remaining distance, obstacle distance, and path point position. By changing speed parameters adaptively throughout the parking process, the system maintains high automation while improving reliability and parking experience.
2Productivity
If speed is increased to improve parking efficiency, then productivity is improved, but collision risk increases
Solution Approach 1:
The patent performs preliminary speed planning for multiple path points in advance, calculating appropriate speed limits before actual execution. By pre-planning speeds based on predicted path remaining distances and obstacle positions, the system can maintain higher speeds for better efficiency while ensuring safety through advance risk assessment and speed adjustment.
Solution Approach 2:
The patent implements a feedback mechanism where parking speeds are continuously planned and adjusted based on real-time measurements of path remaining distance and obstacle distance. This closed-loop control allows the system to optimize parking efficiency by maintaining appropriate speeds while continuously monitoring and responding to safety conditions, thereby reducing collision risk.
Data Source
AI summary
An auto parking method and apparatus, and an intelligent driving device are provided. The method includes: obtaining a first path remaining distance, where the first path remaining distance includes a distance between an intelligent driving device and an end point of a planned parking path along the planned parking path; determining a first speed limit based on the first path remaining distance; determining a second speed limit based on first obstacle distance information, where the first obstacle distance information includes a distance between the intelligent driving device and a surrounding obstacle; and determining a parking speed of the intelligent driving device based on the first speed limit and the second speed limit.