Cruise Control Route Prediction Using Road Shape Validation
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Solution Overview
Problem
Existing vehicle cruise control systems face challenges in accurately predicting the future travel route of a vehicle when the preceding vehicle makes unexpected lane changes or moves outside the road shape, leading to reduced calculation accuracy and limited prediction range.
Innovation Solution
A vehicle cruise control apparatus that utilizes object detection to validate the moving locus of the preceding vehicle by comparing it with stationary road objects and shape, invalidating the locus when it does not align with the road, and calculates the predicted route based on validated data, while extending the prediction range using estimated curve radii.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the moving locus of the preceding vehicle is used to calculate the future travel route, then the route prediction can be performed, but the calculation accuracy decreases when the preceding vehicle makes unexpected lane changes or moves outside the road shape
Solution Approach 1:
The patent introduces stationary objects (road markings, curbs, barriers) as intermediary reference elements to verify the validity of the preceding vehicle's moving locus. By comparing the vehicle's trajectory against these fixed road features, the system can identify and exclude erroneous movements such as unexpected lane changes, thereby improving route prediction accuracy while filtering out harmful data
Solution Approach 2:
The system implements a feedback mechanism where the detected moving locus is continuously validated against stationary objects. When the trajectory deviates from the expected road pattern (e.g., crossing road markings or moving toward barriers), the system receives feedback to invalidate that segment of the locus, preventing erroneous calculations from affecting the predicted route
2Device complexity
If only the inter-vehicular section is used to obtain the moving locus, then the data acquisition is simple, but the prediction range is limited
Solution Approach 1:
The patent applies preliminary action by extending the predicted route beyond the immediately observable inter-vehicular section. Using the validated moving locus and road geometry information from stationary objects, the system proactively calculates and prepares route predictions for extended distances ahead, allowing the cruise control to select target vehicles over a longer range without increasing current data acquisition complexity
Data Source
AI summary
A cruise control apparatus controls the traveling of an own vehicle on the basis of the predicted route which is a predicted value of the travel route of an own vehicle. The cruise control apparatus compares the moving locus of the preceding vehicle with the position of a stationary object provided along the road to determine whether or not a moving locus is along the shape of the road. The moving locus is validated when it is determined that the moving locus is along the shape of the road, and the moving locus is invalidated when it is determined that the moving locus is not along the shape of the road, and the predicted route of the vehicle is calculated on the basis of the validated moving locus.