Driving Assistance Control for Suppressing False Contact Avoidance
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Solution Overview
Problem
Existing driving assistance systems struggle to accurately predict contact with target vehicles, leading to unnecessary contact avoidance operations that inconvenience users.
Innovation Solution
A driving assistance apparatus and method that utilize an electronic control unit to predict the position of a target vehicle based on past data, calculate a deviation amount, and suppress contact avoidance operations when the deviation exceeds a setting value, thereby preventing unnecessary interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact avoidance operation is performed based on predicted position, then safety is improved, but unnecessary operations occur when prediction accuracy is low
Solution Approach 1:
The system calculates a deviation amount between the predicted position and the actually detected position of the target vehicle, and uses this feedback to determine whether to suppress the contact avoidance operation. When the deviation exceeds a threshold, the operation is suppressed, preventing unnecessary interventions while maintaining safety when predictions are accurate.
Solution Approach 2:
The system changes the parameter of operation execution based on the calculated deviation amount. When the deviation amount is within an acceptable range, the contact avoidance operation is executed; when it exceeds the setting value, the operation is suppressed. This dynamic parameter adjustment resolves the contradiction between safety and user convenience.
2Speed
If prediction based on past data is used, then response speed is improved, but prediction accuracy decreases when target vehicle behavior changes
Solution Approach 1:
The system performs preliminary prediction of the target vehicle's position based on past data to enable quick response, but then validates this prediction against actual detected positions. This preliminary action allows fast initial assessment while the validation step ensures accuracy when the target vehicle's behavior changes.
Solution Approach 2:
The system uses feedback from the deviation calculation to detect when prediction accuracy deteriorates. When the deviation amount exceeds the setting value, it indicates the target vehicle's behavior has changed, and the system responds by suppressing unnecessary operations, thus maintaining effective prediction accuracy despite using fast preliminary prediction methods.
Data Source
AI summary
A driving assistance apparatus is configured to control a contact avoidance operation of avoiding contact between a first vehicle to which the driving assistance apparatus is to be applied and a second vehicle. The driving assistance apparatus includes an electronic control unit. The electronic control unit is configured to: make a prediction of a position of the second vehicle at a determination time as a determination predicted position, based on a position of the second vehicle at a past time before the determination time; calculate a deviation amount of the prediction, based on the determination predicted position and a determination detected position that is a position of the second vehicle detected at the determination time; and suppress the contact avoidance operation when the deviation amount is greater than a setting value.