Vehicle Driving Support Device Suppressing False Alarms
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Solution Overview
Problem
Existing vehicle driving support devices provide unnecessary alarms or automatic braking when detecting danger from other vehicles without considering the cause of sudden braking, leading to inappropriate support in situations where the subject vehicle is safely traveling in a different lane.
Innovation Solution
A driving support device that includes a communication unit for wireless communication with other vehicles, a sudden braking detection unit, a risk calculation unit, and a collision avoidance control unit to determine the cause of sudden braking and calculate collision risks based on vehicle and obstacle information, thereby providing appropriate support such as alarms or automatic braking only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving support device provides alarm or automatic braking whenever danger is detected from other vehicles, then collision avoidance capability is improved, but unnecessary driving support is generated causing driver discomfort
Solution Approach 1:
The system changes the parameter of risk calculation by considering multiple factors including lane position, distance, and speed rather than simply detecting sudden braking. This transforms the alarm trigger condition from a binary detection to a multi-parameter risk assessment, reducing false alarms while maintaining collision avoidance capability
Solution Approach 2:
The patent introduces an intermediary risk calculation unit that mediates between the sudden braking detection and the alarm generation. This intermediary analyzes lane information, distance, and speed to determine whether the detected braking event actually poses a collision risk, filtering out false alarms caused by vehicles in different lanes or at safe distances
2Reliability
If the driving support device provides alarm or automatic braking when receiving warning information from other vehicles, then collision avoidance capability is improved, but unnecessary driving support is generated when subject vehicle is safely traveling in different lane
Solution Approach 1:
The system applies local quality by making the alarm function dependent on the specific local condition of lane position. When the subject vehicle is in a different lane from the warning target vehicle, the alarm function is locally disabled even though warning information is received. This ensures that driving support is only provided when spatially relevant to the detected hazard
Solution Approach 2:
The system changes the parameter of risk assessment by incorporating lane position information into the calculation. By comparing the lane position of the subject vehicle with that of the warning target vehicle, the system can determine whether the received warning information is relevant to the current driving path, thereby suppressing unnecessary alarms for vehicles in different lanes
Data Source
AI summary
A control device in one aspect of the present disclosure includes a vehicle information acquisition unit, an obstacle information acquisition unit, and a sudden braking detection unit, and controls a warning information transmission unit to transmit, to an other vehicle, warning information including obstacle information when a sudden braking is performed by a subject vehicle. When receiving the warning information from the other vehicle, a target vehicle determination unit confirms that the other vehicle is a warning target vehicle, and a risk calculation unit calculates a collision risk of the subject vehicle to collide with an obstacle, and a collision avoidance unit performs a collision avoidance control according to the calculated collision risk.