Automatic Warning Triangle Deployment for Stopped Autonomous Vehicles
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Solution Overview
Problem
Existing motor vehicle emergency systems fail to alert following traffic when a driver is unfit to drive, leading to safety risks as the vehicle is not warned to other road users when parked at the roadside.
Innovation Solution
A system that automatically calculates a standstill position and deploys a warning triangle at a sufficient distance from the vehicle, utilizing a propelling charge or mechanical mechanism to launch the triangle from a vehicle holder, ensuring it unfolds and assumes a warning position to alert following traffic, and optionally transmits its position via radio signals to other vehicles or infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle is automatically stopped at the edge of the road when automatic guidance must be terminated, then the vehicle is safely parked, but following traffic is not alerted to this stopped vehicle
Solution Approach 1:
The system calculates the standstill position in advance during the stopping operation and automatically deploys the warning triangle at a sufficient distance from the calculated standstill position. This preliminary action ensures that the warning is positioned optimally before the vehicle actually stops, allowing following traffic to be alerted in time while the vehicle is still approaching its final position.
2Object-generated harmful factors
If a warning triangle is deployed at a sufficient distance from the standstill position, then following traffic is warned, but the device complexity increases
Solution Approach 1:
The warning triangle deployment function is merged with the existing automatic stopping system. The control unit that manages the stopping operation also calculates the standstill position and triggers the warning triangle deployment. This integration allows the warning function to be added without requiring a completely separate control system, thereby reducing overall device complexity.
Solution Approach 2:
The system automatically calculates the optimal warning triangle position based on the predicted standstill position and autonomously deploys the warning triangle without requiring manual intervention. The propelling charge automatically launches the warning triangle from the holder, and the system self-regulates the entire process based on sensor data and pre-programmed logic.
3Reliability
If the automatic vehicle guidance system continuously monitors driver availability, then safety is improved, but the system complexity increases
Solution Approach 1:
The system continuously receives feedback from sensors monitoring driver availability and automatically adjusts its operation. When the driver is determined to be unavailable, the system triggers the stopping sequence and warning triangle deployment. This feedback mechanism allows the system to respond dynamically to driver status changes without requiring complex continuous control, as the decision logic is based on clear threshold-based driver availability assessment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances road safety by warning following traffic of a stopped vehicle, reducing the risk of accidents and ensuring timely notification of the vehicle's location to other road users, thereby increasing overall safety.
Implementation Method 1
a propelling charge or mechanical mechanism to launch the triangle from a vehicle holder
Implementation Method 2
transmits its position via radio signals to other vehicles or infrastructure
Data Source
AI summary
A method and device, for a vehicle that at times is automatically guided by an autonomous guidance in which an intervention by the driver is not required, includes a continual checking of whether the automatic vehicle guidance is able to be maintained in the future or whether it must be terminated. In the event that the automatic vehicle guidance must be terminated, the vehicle is transitioned into a stopping procedure. A standstill position of the vehicle in the stopping process is pre-calculated and a warning triangle mounted on the vehicle is launched, so that the warning triangle is positioned at a predefined minimum distance from the standstill position.