Parking Assistance Obstacle Judgment Range Setting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current parking assistance devices face increased processing loads due to detecting obstacles that do not interfere with vehicle travel, requiring inefficient obstacle judgment processes.
Innovation Solution
A parking assistance device that includes an input-output interface, a condition obtaining unit, a parking-position determination unit, a route generation unit, a range setting unit, and a judgment unit to reduce processing load by setting a search range based on the vehicle's movement range and judging obstacles only within this range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the monitoring area is set to cover all potential obstacle locations, then the detection coverage is improved, but the processing load increases due to unnecessary obstacle judgments
Solution Approach 1:
The monitoring area is segmented into a search range (first area) and a non-search area (second area) based on the calculated movement range of the vehicle. The judgment unit only performs obstacle detection and collision possibility judgment within the search range, while objects in the non-search area are excluded from judgment. This segmentation reduces the number of objects requiring processing without compromising safety within the relevant movement zone.
Solution Approach 2:
Different quality of processing is applied to different spatial regions: full obstacle detection and judgment is applied locally within the search range where the vehicle may move, while the non-search area receives reduced processing (detection without judgment). This local quality differentiation optimizes processing load by focusing computational resources only on regions where obstacles could potentially interfere with vehicle movement.
2Reliability
If obstacle judgment is performed on all detected objects, then the safety is improved, but the processing time increases
Solution Approach 1:
The system performs preliminary calculation of the vehicle's movement range before obstacle judgment. Based on this pre-calculated movement range, the search area is defined in advance, and only objects within this predetermined area are subjected to collision possibility judgment. This preliminary action of defining the search boundary before judgment reduces the number of objects requiring time-consuming collision analysis.
Solution Approach 2:
Objects detected outside the search range are extracted from the judgment process entirely. The judgment unit excludes these objects from collision possibility assessment, focusing computational effort only on objects within the search range. This extraction of irrelevant objects from the processing chain reduces overall processing time while maintaining safety within the relevant operational zone.
Data Source
AI summary
A parking assistance device includes a range setting unit configured to set a search range searching for an obstacle based on a movement range of a host vehicle for a case in which the host vehicle is moved along a parking route, in terms of two directions, and a judgment unit configured to detect an object having a possibility of interfering with the movement of the host vehicle, based on the surrounding condition around the host vehicle, in a case in which the detected object is positioned within the search range, to judge whether the detected object is an obstacle interfering with the movement of the host vehicle along the parking route, and, in a case in which the detected object is positioned outside the search range, not to make judgment whether the detected object is the obstacle.