Dynamic Path Prediction Using Vehicle History Ratios
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Solution Overview
Problem
Existing vehicle path prediction devices either rely solely on their own traveling histories, leading to inaccurate predictions in unfamiliar areas, or use other drivers' histories, reducing accuracy even in areas with sufficient own histories.
Innovation Solution
A path prediction device that combines own and other vehicles' path information, determining the use ratio based on past traveling records to predict paths accurately, using own histories in familiar areas and others' in unfamiliar areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If path prediction is based solely on own vehicle's traveling histories, then prediction accuracy is improved in familiar areas, but prediction capability is lost in unfamiliar areas where the vehicle has not traveled before
Solution Approach 1:
The patent combines own vehicle's traveling histories with other vehicles' traveling histories to create a comprehensive path prediction system. The storage unit stores both types of path information, and the path prediction unit dynamically selects and combines them based on the current situation, resolving the contradiction between accuracy in familiar areas and capability in unfamiliar areas.
Solution Approach 2:
The path prediction unit dynamically adjusts the selection between own vehicle path information and other vehicles path information based on real-time conditions. When the vehicle is in familiar areas with sufficient own histories, it uses own paths; when in unfamiliar areas, it switches to other vehicles paths, making the system adaptable to different situations.
2Adaptability or versatility
If path prediction uses other drivers' traveling histories, then prediction capability is maintained in unfamiliar areas, but prediction accuracy reduces even in areas with sufficient own traveling histories
Solution Approach 1:
The system dynamically selects the data source based on the vehicle's location and available information. In familiar areas where own traveling histories are sufficient, it switches to using only own vehicle paths for higher accuracy. In unfamiliar areas, it transitions to using other vehicles paths to maintain prediction capability, thus resolving the accuracy-capability trade-off.
Solution Approach 2:
The patent applies different prediction strategies to different spatial locations. In familiar areas (home vicinity), it uses high-precision own vehicle histories. In unfamiliar areas, it uses other vehicles histories. This local differentiation optimizes both accuracy and capability across different regions.
3Adaptability or versatility
If the system stores and processes traveling path information from multiple vehicles, then prediction capability in unfamiliar areas is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the necessary path information from multiple vehicles - specifically, the traveling paths themselves - rather than storing complete vehicle data. This selective extraction reduces storage requirements and processing complexity while maintaining the ability to provide prediction capability in unfamiliar areas.
Data Source
AI summary
A path prediction device comprises a storage unit that generates and stores, based on information collected from a plurality of vehicles including a first vehicle, traveling path information indicating information associated with paths where the respective vehicles have traveled; a positional information acquisition unit that acquires a first position indicating the current position of the first vehicle; and a path prediction unit that predicts the traveling path of the first vehicle using at least one of first path information indicating paths of the first vehicle and second path information indicating paths of second vehicles among the traveling path information, wherein the path prediction unit determines a use ratio of the first path information, which is used to predict the traveling path, based on a past traveling record of the first vehicle at the first position.