Turning Vehicle Collision Prediction Using Provisional Contact Paths
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Solution Overview
Problem
Existing driving assistance systems struggle to accurately determine potential vehicle contact when the own vehicle is turning, such as at curves or intersections.
Innovation Solution
A driving assistance apparatus and method that utilize an electronic control unit to calculate predicted paths for both the own vehicle and a target vehicle, determine a provisional contact point and time, and assess potential contact by assuming straight-line travel at the provisional contact time, using camera and radar data to execute braking commands when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the own vehicle is assumed to travel straight while keeping current speed, then the contact determination calculation is simple, but the contact determination accuracy deteriorates when the vehicle is actually turning
Solution Approach 1:
The patent applies dynamics by making the predicted path model adaptable to different vehicle states. Instead of using a fixed straight-line path assumption, the system dynamically adjusts the path prediction to account for vehicle turning behavior, allowing the calculation model to reflect actual vehicle motion characteristics while maintaining computational efficiency
Solution Approach 2:
The patent changes the parameters used in path prediction from simple straight-line assumptions to parameters that incorporate vehicle turning state. By introducing parameters such as turning radius and angular velocity into the path prediction model, the system achieves accurate contact determination for turning vehicles without significantly increasing computational complexity
2Measurement precision
If a complex path prediction model is used to account for vehicle turning, then contact determination accuracy improves, but calculation complexity increases
Solution Approach 1:
The patent applies partial action by selectively incorporating only the necessary turning parameters into the path prediction model. Rather than using a fully complex dynamic model, the system includes just enough turning-related parameters (such as basic turning radius and angular velocity) to achieve accurate contact determination for turning scenarios, avoiding unnecessary computational overhead
Data Source
AI summary
A driving assistance apparatus includes an electronic control unit. The electronic control unit: calculates a first predicted path of a first vehicle to which the driving assistance apparatus is to be applied, the first predicted path being indicated by a circle having a radius obtained from a yaw rate of the first vehicle at a prediction reference time; calculates a second predicted path of a second vehicle, based on data regarding the second vehicle at the prediction reference time; calculates a provisional contact point, based on an intersection point of the first predicted path and the second predicted path; calculates a provisional contact time when the first vehicle reaches the provisional contact point; and determines whether the first vehicle and the second vehicle come into contact with each other, assuming that the first vehicle and the second vehicle at the provisional contact time travel straight to cross each other.