Autonomous Vehicle Path Deviation Prediction and Switching
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Solution Overview
Problem
Autonomous driving systems face delays and potential unexpected situations when a vehicle deviates from its path due to road congestion, as they need to re-search and re-set a global path, which can lead to uncertainty during the re-pathing process.
Innovation Solution
An apparatus and method that predict path deviation areas based on road attributes and congestion levels, allowing for the pre-searching and pre-setting of alternative paths, enabling immediate switching to the alternative path when deviation occurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous driving system re-searches and re-sets a global path after vehicle deviation, then the vehicle can reach the destination, but time is lost and unexpected situations may occur during the re-pathing process
Solution Approach 1:
The system performs preliminary path searching and generates alternative paths in advance, before the vehicle actually deviates from the original path. This preliminary action stores multiple pre-calculated paths so that when deviation occurs, the system can immediately switch to a pre-prepared alternative path without time-consuming re-search, thus resolving the contradiction between reliability and time loss
Solution Approach 2:
The system prepares alternative paths in advance as a cushion against potential path deviations. By having backup paths ready before deviation occurs, the system creates a safety buffer that ensures continuous navigation reliability while avoiding the time penalty of real-time path recalculation
2Adaptability or versatility
If the autonomous driving system searches for a path again after deviation, then a new global path can be set, but the uncertainty during searching may lead to unexpected situations
Solution Approach 1:
The system performs preliminary path searching and generates multiple alternative paths in advance, storing them for immediate use. This preliminary action eliminates the uncertainty of real-time searching by having pre-validated paths ready, thus maintaining both adaptability to deviation and stability during the transition
3Ease of operation
If the vehicle follows the original global path, then the route is simple to follow, but the vehicle may deviate due to road congestion and other factors
Solution Approach 1:
The system dynamically switches between the original global path and pre-calculated alternative paths based on real-time conditions such as congestion levels and deviation detection. This dynamic approach maintains the simplicity of following a predefined path while ensuring reliability by adapting to changing road conditions through automated path switching
Data Source
AI summary
An apparatus for controlling a path of a vehicle includes: a path generating processor configured to generate a first path by searching for a path from a current location of the vehicle to a destination and generate a second path by searching for a path from a path deviation prediction area on the first path to the destination based on a request; a path deviation area extracting processor configured to extract the path deviation prediction area based on road attributes on the first path; and a path controller configured to determine whether to generate the second path based on a congestion level of a road around the vehicle and reset a driving path of the vehicle to the second path when path deviation occurs on the extracted path deviation prediction area.