Vehicle-to-Vehicle Collision Alerts With Driver-State Update Control
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Solution Overview
Problem
Existing driving assistance systems frequently update collision information for multiple vehicles, causing annoyance to the driver.
Innovation Solution
A driving assistance device that uses vehicle-to-vehicle communication to predict collision possibilities and selectively displays attention-calling and direction information based on driver actions, suppressing unnecessary updates to reduce driver annoyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If collision information is frequently updated to maintain accurate collision prevention, then collision prediction accuracy is improved, but driver annoyance increases due to excessive information display
Solution Approach 1:
The system dynamically adjusts the update frequency of attention-calling information based on the driver's operational state. When the driver is actively operating the vehicle, updates are suppressed to reduce annoyance. When the driver is not operating, updates resume to maintain safety. This dynamic adaptation resolves the contradiction between maintaining accuracy and reducing driver disturbance.
Solution Approach 2:
The system changes the display parameter (update frequency) based on driver operation status. By monitoring whether the driver is operating the vehicle, the system adjusts the information update rate accordingly - reducing updates during active operation to minimize annoyance while maintaining collision prediction accuracy through selective updating.
2Reliability
If attention-calling information is updated for every new collision prediction, then collision safety is improved, but information stability deteriorates causing frequent display switching
Solution Approach 1:
The system implements dynamic update control where the stability of information display is adjusted based on driver operation. During active driving, updates are suppressed to maintain display stability. When the driver is not operating, the system becomes more dynamic and updates information to reflect new collision predictions, thus maintaining both safety and stability in appropriate contexts.
Solution Approach 2:
The system takes preliminary action to prevent excessive updates by detecting driver operation status beforehand. When the driver is operating the vehicle, the system proactively suppresses updates to prevent information instability and driver annoyance, while still maintaining collision safety through selective updating when conditions change significantly.
3Measurement precision
If direction information is continuously updated to reflect current peripheral vehicle positions, then navigation accuracy is improved, but processing load increases
Solution Approach 1:
The system changes the update parameter for direction information based on driver operation status. During active driving, updates are reduced to lower processing load. When the driver is not operating, full update frequency resumes to maintain navigation accuracy. This parameter adjustment resolves the contradiction between accuracy and processing efficiency.
Data Source
AI summary
The present invention provides a driving assistance device configured to perform driving assistance for a self-vehicle, comprising: an acquisition unit configured to acquire peripheral vehicle information of a peripheral vehicle present around the self-vehicle, from the peripheral vehicle by vehicle-to-vehicle communication; a first prediction unit configured to predict a collision possibility between the self-vehicle and the peripheral vehicle based on self-vehicle information of the self-vehicle and the acquired peripheral vehicle information; a first display unit configured to, when a first state is detected, display attention-calling information for calling attention to approach of the peripheral vehicle in a first period from a timing at which the first state is detected; and a second display unit configured to, when a second state is detected, display direction information indicating an approach direction of the peripheral vehicle.